CN102628242B - Plate-type ballastless track concrete track plate, manufacturing method thereof, and stretching device thereof - Google Patents
Plate-type ballastless track concrete track plate, manufacturing method thereof, and stretching device thereof Download PDFInfo
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- CN102628242B CN102628242B CN201210131219.6A CN201210131219A CN102628242B CN 102628242 B CN102628242 B CN 102628242B CN 201210131219 A CN201210131219 A CN 201210131219A CN 102628242 B CN102628242 B CN 102628242B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 51
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- 230000003014 reinforcing effect Effects 0.000 claims description 190
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 169
- 238000004080 punching Methods 0.000 claims description 71
- 238000000034 method Methods 0.000 claims description 39
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 abstract description 32
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- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
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- 210000003128 head Anatomy 0.000 description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
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Abstract
The invention relates to a plate-type ballastless track concrete track plate. The plate-type ballastless track concrete track plate comprises a plate body, a plurality of pretensioned longitudinal prestressed reinforcements are arranged in the plate body, the pretensioned longitudinal prestressed reinforcements extend in the length direction of the plate body, the pretensioned longitudinal prestressed reinforcements are bonded with concrete in the plate body closely, and the pretensioned longitudinal prestressed reinforcements are anchored with the plate body. Compared with existing pretensioned plates, the anchoring strength shortage problem between the plate body and the pretensioned longitudinal prestressed reinforcements occurs when the plate body and the pretensioned longitudinal prestressed reinforcements are connected only by bond stress is solved, because end portions of the pretensioned longitudinal prestressed reinforcements are anchored with the track plate by using an anchoring device in production. By establishing a prestressed system on the end portions of the plate body in an anchoring manner, strength of the concrete located on the end portions of the plate body is enhanced, and service life of the plate body is prolonged.
Description
Technical field
The present invention relates to a kind of fragment-free track slab, manufacture method and tensioning equipment, especially a kind of slab ballastless track concrete track slab, manufacture method and tensioning equipment.
Background technology
In the manufacturing process of CRTS series slab ballastless track concrete track slab (hereinafter to be referred as " track plates "), for fear of strain cracking, conventionally need by the mode of stretch-draw, anchoring, to track plates, apply in advance compressive stress and form prestressed reinforced concrete, to improve crack resistance and the rigidity of member and to increase its durability.
In prior art, mainly adopt pre-tensioning system, two kinds of construction methods of post stretching to manufacture prestressed reinforced concrete.
1, pre-tensioning system construction
Pre-tensioning system construction refers to after prestressed reinforcement of tensioning, the construction method of concreting again.
The key step of pre-tensioning system construction is as follows: tensioned prestressing bar on pedestal or on punching block before concreting first, and with fixture, the complete presstressed reinforcing steel of stretch-draw is temporarily fixed on the crossbeam of pedestal or on punching block; Then concreting, curing concrete, to the more than 70% of design strength grade, loosens presstressed reinforcing steel.
The track plates that adopts pre-tensioning system construction to make, in track plates inside, by concrete, bonded pre-tensioned prestressing reinforcing bar, and pre-tensioned prestressing reinforcing bar is in track plates not anchoring of end, its reason is: the track plates that pre-tensioning system construction is made is stop prestressed reinforcement elastic recoil and make concrete bear compressive pre-stress with the bonding force between prestressed reinforcement and concrete, just because of such process characteristic, after stretch-draw completes, only need prestressed reinforcement be cut along track plates end face concordant, without anchoring separately.
Therefore, the track plates that the construction of employing pre-tensioning system is made main weak point is structurally: the prestressed reinforcement of track plates end exposes, and at its concrete around, easily forms capillary porosity and occurs loose.
Especially after these capillary porosity water suctions, also can make prestressed reinforcement make moist corrosion, cause the concrete of track plates end and the compressive pre-stress between its inner prestressed reinforcement to reduce gradually, even make the concrete of track plates end lose and come off because of compressive pre-stress, therefore the track plates durability of this spline structure and reliability are not good.And such defect, adopting traditional mode poor effect of smearing rust preventive coating, its reason is that prestressed reinforcement can be subject to high-frequency vibration in the process of manufacturing and using, the rust preventive coating of smearing is easy to wear, and operation, maintenance cost are higher.
Separately, the track plates inside that adopts pre-tensioning system construction to make does not arrange structure reinforcing bars, and the tired structural member high for life requirement is irrational.
2, post-tensioned construction
Post-tensioned construction refers to: after concreting track plates completes stripping process, then the construction method of prestressed reinforcement of tensioning.
The key step of post-tensioned construction is as follows:
A, build concrete members;
B, after concrete reaches desired strength, with jack, be supported on concrete component end, by no-cohesive prestressed reinforcement stretch-draw, make member compressed by counter-force;
C, to be tensionedly to controlling after pulling force, with anchoring nut, no-cohesive prestressed reinforcement is anchored on concrete component, concrete obtains and keeps its compressive pre-stress;
The track plates that adopts post stretching to make, when stretch-draw, be to rely on the anchoring nut that is positioned at prestressed reinforcement end to transmit compressive pre-stress, the stress that prestressed reinforcement end is subject to is very large, under the effect of high strength fatigue impact load, fragile and fracture, cause prestressed reinforcement to eject, track plates deformation, has a strong impact on train safe.
And post-tensioned construction need carry out separately respectively stretch-draw to each track plates, work length consuming time, efficiency are low.
The track plates that employing post-tensioned construction is made structurally, is provided with anchor recess hole in the end of track plates, and in order to lay jack in stretching process, the internal diameter in anchor recess hole and the profile of stretch-draw jack are suitable.
The track plates that adopts post-tensioned construction to make structurally has the following disadvantages:
Because anchor recess hole need meet the needs that jack is installed, therefore the size of anchor recess is conventionally larger, cause the gauge of anchor recess hole periphery residual concrete less, in process of production with when operation under the effect of train high strength fatigue load, concrete easily ftractures, cause track plates crackle damaged, had a strong impact on the application life of track plates.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the above-mentioned deficiency of prior art, and the slab ballastless track concrete track slab of a kind of end concrete difficult drop-off, longer service life is provided.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of slab ballastless track concrete track slab, comprise plate body, in described plate body, be provided with some longitudinal prestressing reinforcing bars of first opening, the described longitudinal prestressing reinforcing bar of first opening is along the length direction extension of plate body, the described concrete of first opening in longitudinal prestressing reinforcing bar and plate body is combined closely, and describedly first opens longitudinal prestressing reinforcing bar and plate body anchoring.
Compare with existing pre-tensioned plate, due to when producing, to first open between the end reinforced and track plates of longitudinal prestressing and use ground tackle anchoring, plate body and the problem of first opening anchoring strength deficiency when only relying on bond stress between longitudinal prestressing reinforcing bar and being connected have been solved, mode by anchoring is set up prestress system in plate body end, increased the concrete intensity that is positioned at plate body end, the application life of having improved plate body.
Compare with existing posttension plate, owing to first opening longitudinal prestressing reinforcing bar, without the end at track plates, connect separately jack and carry out stretch-draw, the anchor recess hole dimension of anchoring place is without suitable with the size of jack end, therefore, the diameter in anchor recess hole and the degree of depth are much smaller than the size of anchor recess in existing posttension plate, thereby greatly increased the thickness of anchor recess hole surrounding concrete, concrete is not easy to crack, significantly increased application life, and before anchoring, between pre-tensioned prestressing reinforcing bar and concrete, both had bond stress, the mechanical property of track plates is better;
It should be noted that, the longitudinal prestressing reinforcing bar of first opening in the present invention refers to the pre-tensioned prestressing reinforcing bar that extends and be parallel to the longitudinal centre line of plate body along the length direction of plate body; Be different from common prestressed reinforcement, pre-tensioned prestressing reinforcing bar is the prestressed reinforcement that adopts pre-tensioning system to manufacture, before the concreting of plate body, complete prestressed stretch-draw, the concrete of plate body is formed by concreting at its first Zhang Yihou again, therefore pre-tensioned prestressing reinforcing bar and concrete more fully, be combined densely, have larger bond stress.
Separately, difference due to bond stress between the function of anchor plate and prestressed reinforcement and concrete, in the present invention, the anchor plate of stressed more traditional posttension plate of anchor plate is stressed little, little to restrictions such as the size of anchor plate, connected modes, therefore, the anchor plate of can preferred dimension more simplifying, thus the thickness of anchor recess surrounding concrete further increased, and improve its application life.
As preferably, in described plate body, be also provided with some transverse prestressed reinforcing steel bars of first opening, the described transverse prestressed reinforcing steel bar of first opening extends along the width of plate body, and the described concrete of first opening in transverse prestressed reinforcing steel bar and plate body is combined closely, and describedly first opens transverse prestressed reinforcing steel bar and plate body anchoring.
Longitudinal prestressing reinforcing bar is corresponding with first opening, some transverse prestressed reinforcing steel bars of first opening are set in plate body, and be anchored in equally plate body end and be coated on plate body inside, further optimize the inner stressing conditions of track plates, and first open the similar effect of longitudinal prestressing reinforcing bar laterally playing of plate body to arranging.
As preferably, describedly first open longitudinal prestressing reinforcing bar and first open transverse prestressed reinforcing steel bar all by anchor plate and plate body anchoring, described anchor plate is provided with internal thread hole, the described end of first opening the end of longitudinal prestressing reinforcing bar and first opening transverse prestressed reinforcing steel bar is provided with external thread section, described first open longitudinal prestressing reinforcing bar and first open transverse prestressed reinforcing steel bar be all threaded with anchor plate, described anchor plate is connected with plate body cassette.
Anchor plate in existing posttension track plates need bear whole stress of prestressed reinforcement stretch-draw, not only in syndeton, must adopt the higher connected mode of intensity, and the size in anchor recess hole must not be less than the head dimensions of stretch-draw jack, size restrictions for anchor plate, anchor recess hole is higher, indirectly reduced anchor recess hole surrounding concrete thickness, affect application life of track plates.The present invention compares with existing posttension track plates anchor plate, function due to anchor plate, and the difference of bond stress between prestressed reinforcement and concrete, in the present invention, anchor plate is mainly used for locking, the ground tackle of stressed more traditional posttension plate is little a lot, restriction for the syndeton of anchor plate is little, directly prestressed reinforcement is threadedly connected on the internal thread hole of anchor plate and already meets stressed demand, simultaneously, anchor plate is along first opening longitudinal prestressing reinforcing bar, first open the radially protrusion of transverse prestressed reinforcing steel bar, after building, on plate body, form boss shape mounting structure, put the retraction trend of Zhang Yihou anchor plate together with prestressed reinforcement end, and interfere also cassette to be connected with the boss shape mounting structure of plate body, without setting up in addition locking nut, card cone waits parts to lock, anchoring.In addition, also very little to the size restrictions of anchor plate, the size of anchor plate is less, more simplify.
Herein, most preferred, first open longitudinal prestressing reinforcing bar and first open transverse prestressed reinforcing steel bar and all by prestressed reinforcement end head threads, be threaded with the internal thread hole of anchor plate.
Adopt the connected mode of prestressed reinforcement end head threads and anchor plate, compare with the anchor plate that posttension plate is used, the diameter of anchor recess has reduced more than 60% and the degree of depth in anchor recess hole has also reduced, and has saved encapsulant and connection is more firm.
As preferably, described first open longitudinal prestressing reinforcing bar and first open transverse prestressed reinforcing steel bar be all packaged in plate body.
The end of prestressed reinforcement is all arranged on to the inside of plate body, that is: first open longitudinal prestressing reinforcing bar, and the outer end of first opening transverse prestressed reinforcing steel bar is not all exposed to plate body outside, avoided first opening because of track plates end the capillary porosity that longitudinal prestressing reinforcing steel bars exposed produces, cause the concrete that is positioned at track plates end to come off, and slowed down the situation of prestressed reinforcement end corrosion, and then avoided the bond stress between prestressed reinforcement and plate body to reduce, prevented the vibratory process in manufacture process, and form hole between the dither environment lower prestress reinforcing bar in use procedure and plate body, thereby improved track plates overall performance and and durability, increase the service life.
It should be noted that: encapsulation herein, refer to that plate body is all coated on wherein first opening longitudinal prestressing reinforcing bar and first opening transverse prestressed reinforcing steel bar, and make the end of first opening longitudinal prestressing reinforcing bar and first opening transverse prestressed reinforcing steel bar all not be exposed to the outside of plate body.
As preferably, in described plate body, be also provided with cage of reinforcement, described cage of reinforcement is formed by some nonprestressed reinforcement colligations.
In the track plates that existing employing pre-tensioning system construction makes, be showed no cage of reinforcement is set, extremely unreasonable for the such high-durability demand of track plates, high tired structural member, set up after cage of reinforcement, can improve bulk strength and the shock resistance of track plates.
As preferably, described first open longitudinal prestressing reinforcing bar and first open transverse prestressed reinforcing steel bar respectively along the vertical and horizontal of plate body through cage of reinforcement.
The mode that adopts prestressed structure and non-prestressed structure to organically combine, bulk strength and the shock resistance of track plates are more excellent.
It should be noted that, in cross-under process, if not prestressed reinforcement has stopped the layout of prestressed reinforcement, should slightly adjust the shape of nonprestressed reinforcement, position, with the cross-under of adaptive prestressed reinforcement.
As preferably, described anchor plate is cylindric, and the diameter of described anchor plate is 25mm～33mm; Between the outer face of described anchor plate and the face of cylinder, be provided with circular arc chamfering, described circular arc chamfering radius is 3mm～8mm.Adopt such structure, the situation such as can further prevent that stress from concentrating causes concrete cracks on track plates, comes off.
As preferably, the described transverse prestressed reinforcing steel bar of first opening goes to upper and lower two rows and distributes in plate body; The described longitudinal prestressing reinforcing bar of first opening goes to upper and lower two rows' distributions in plate body.
Therefore the object that existing track plates arranges prestressed reinforcement is that thermal stresses is worked, prevented concrete in tension stress and ftractures, and is laterally only provided with single transverse prestressed reinforcing steel bar along track plates; Two rows that in the vertical direction of the present invention is adjacent first open longitudinal prestressing reinforcing bar outside, be arranged symmetrically with the mode that two rows first open transverse prestressed reinforcing steel bar, improve track plates and born the shock resistance of larger axis heavily and under the thump condition of high frequency capacity, and its bulk strength is significantly improved, thereby extended the application life of track plates.
As preferably, described two row's longitudinal prestressing reinforcing bars are arranged between described two row's transverse prestressed reinforcing steel bars.
Therefore the object that existing track plates arranges prestressed reinforcement is that thermal stresses is worked, prevented concrete in tension stress and ftractures, and is laterally only provided with single transverse prestressed reinforcing steel bar along track plates;
Two row's transverse prestressed reinforcing steel bars are distributed in to upper and lower two rear flank of longitudinal prestressing reinforcing bar, shock resistance and the bulk strength of track plates under the thump condition of bearing larger axis weight and high frequency capacity significantly improves, thereby extended the application life of track plates.
the manufacture method of above-mentioned slab ballastless track concrete track slab, comprises the following steps:
A, the punching block of track plates is in place;
B, with nonprestressed reinforcement, work out cage of reinforcement, longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar are penetrated to cage of reinforcement;
C, cage of reinforcement, longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar are hung in punching block together, and on the end of longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar, anchor plate is installed, anchor plate is provided with internal thread hole, on longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar, be equipped with external thread section, longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar are all threaded with anchor plate;
D, with connecting rod, longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar are connected in place with tensioning system;
E, carries out single initial tensioning to longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar;
F, respectively transverse prestressed reinforcing steel bar, longitudinal prestressing reinforcing bar are carried out to synchronous tension, form and first open transverse prestressed reinforcing steel bar and first open longitudinal prestressing reinforcing bar;
G, concreting;
H, stream curing;
I, when concrete intensity reach design strength 80% after, put;
J, dismounting connecting rod;
K, the demoulding;
L, sealing off and covering anchorage.
Adopt such manufacture method, track plates is not preset the duct of laying of anchor recess and prestressed reinforcement before having built, and the bond stress of tensioning process simply and between prestressed reinforcement and concrete is larger, and the intensity of track plates is higher; Separately, complete the anchor recess size forming after stretch-draw less on track plates, thereby increased anchor recess concrete thickness around, further improved the intensity of track plates.
As preferably, in steps d, one end and the tensioning system of described connecting rod are fixed, and the other end of described connecting rod is threaded with first opening longitudinal prestressing reinforcing bar or first open transverse prestressed reinforcing steel bar.
By connecting rod to stretch-drawing beam and with first open transverse prestressed reinforcing steel bar, first open longitudinal prestressing reinforcing bar and carry out transition and be connected, make the size in anchor recess hole without adaptive with stretch-draw jack end size, the anchor recess size forming on track plates is less, meeting under the condition of bonding strength, conventionally anchor recess aperture can reduce more than 60%, the degree of depth in hole has also reduced, and has further strengthened concrete thickness around of anchor recess and has improved the intensity of track plates.
a kind of tensioning equipment for the manufacture of above-mentioned slab ballastless track concrete track slab, comprise by the suitable punching block of several and plate shape, describedly first open longitudinal prestressing reinforcing bar, first opening transverse prestressed reinforcing steel bar, to be all arranged at each punching block inner, described punching block along laterally, longitudinal arrangement becomes punching block matrix; Described each first opened longitudinal prestressing reinforcing bar, the two ends of first opening transverse prestressed reinforcing steel bar are provided with connecting rod, and the connecting rod in described punching block matrix between adjacent two punching blocks is coaxially fixedly connected with; The connecting rod that is positioned at described punching block matrix outside is fixedly connected with tensioning system; Described each first opened longitudinal prestressing reinforcing bar, the both ends of first opening transverse prestressed reinforcing steel bar are also provided with anchor plate, and described anchor plate radially protrudes from first to be opened longitudinal prestressing reinforcing bar or first open transverse prestressed reinforcing steel bar.
By above-mentioned tensioning equipment, track plates is carried out to stretch-draw manufacture, can once to a plurality of track plates, carry out integral tension, improve the production efficiency of tensioning process, simultaneously, by being arranged at anchor plate on presstressed reinforcing steel, evagination, at prestressed reinforcement of tensioning concreting, maintenance, put Zhang Yihou, retraction trend by prestressed reinforcement is from anchor, the anchoring function of prestressed reinforcement end when the prestressed reinforcement in the track plates that makes to make has the high bond stress that pre-tensioning system brings, when having post stretching concurrently and manufacturing, thus the bulk strength of track plates improved
As preferably, described anchor plate is threaded with first opening longitudinal prestressing reinforcing bar or first open transverse prestressed reinforcing steel bar; Adopt such structure, be convenient to erection.
As preferably, described tensioning system comprises crossbeam and stretch-draw jack, and the connecting rod that is positioned at punching block matrix outside is all fixedly connected with crossbeam, and described stretch-draw jack drive crossbeam is along lateral or longitudinal movement.Adopt such structure, can be to some prestressed reinforcement simultaneous tensions, operating efficiency is high.
The invention has the beneficial effects as follows: compare with pre-tensioned plate, owing to formerly opening between the end reinforced and track plates of longitudinal prestressing, use anchor plate anchoring, avoided first opening capillary porosity that longitudinal prestressing reinforcing steel bars exposed produces, cause the concrete that is positioned at track plates end to come off, by the application life of advancing the track plate because of track plates end.
Compare with existing posttension plate, owing to first opening longitudinal prestressing reinforcing bar, without the end at track plates, connect separately jack and carry out stretch-draw, the ground tackle size of anchoring place is without suitable with the size of jack end, therefore, the diameter in anchor recess hole and the degree of depth are much smaller than the size of anchor recess in existing posttension plate, thereby the thickness that has greatly increased anchor recess hole surrounding concrete, concrete is not easy to crack, has significantly increased application life; And owing to having bond stress between pre-tensioned prestressing reinforcing bar and concrete, the mechanical property of track plates is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of pre-tensioned prestressing reinforcement placement in the present invention;
Fig. 2 is the cross section structure schematic diagram of pre-tensioned prestressing reinforcement placement in the present invention;
Fig. 3 is the syndeton schematic diagram of pre-tensioned prestressing reinforcing bar and anchor plate in the present invention;
Fig. 4 is the structural representation of anchor plate in the present invention;
Fig. 5 first opens longitudinal prestressing steel bar connecting structure schematic diagram in non-fragment orbit concrete railway board of the present invention;
Fig. 6 first opens transverse prestressed reinforcing steel bar syndeton schematic diagram in non-fragment orbit concrete railway board of the present invention;
Fig. 7 is the connected mode schematic diagram of slab ballastless track concrete track slab prestressed stretch-draw in the present invention;
Fig. 8 is the schematic diagram of a kind of embodiment of the connected mode of slab ballastless track concrete track slab prestressed stretch-draw in the present invention;
Fig. 9 is the local enlarged diagram of A part in Fig. 8;
Figure 10 is the local enlarged diagram of B part in Fig. 8;
Figure 11 is the local enlarged diagram of C part in Fig. 8;
Figure 12 is the local enlarged diagram of D part in Fig. 8;
Figure 13 is the local enlarged diagram of E part in Fig. 8.
Wherein, Reference numeral is: 1 is plate body; 1-1 is the longitudinal centre line of plate body; 1-2 is the cross central line of plate body; 2 for first opening longitudinal prestressing reinforcing bar; 3 for first opening transverse prestressed reinforcing steel bar; 4 is anchor plate; 4a is internal thread hole; 5 is external thread section; 6 is punching block; 7 is connecting rod; 8 is tensioning system; 8a is crossbeam; 8b is stretch-draw jack; 9 is pedestal.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Embodiments of the present invention are not limited to following examples, within the various variations of making under the prerequisite that does not depart from aim of the present invention all belong to protection scope of the present invention.
embodiment 1
As depicted in figs. 1 and 2, the present embodiment slab ballastless track concrete track slab comprises plate body 1, in plate body 1, be provided with some longitudinal prestressing reinforcing bars 2 of first opening, first open longitudinal prestressing reinforcing bar 2 and refer to the length direction extension along plate body 1, and the prestressed reinforcement that is parallel to the longitudinal centre line 1-1 of plate body, be different from common prestressed reinforcement, first open longitudinal prestressing reinforcing bar 2 and completed prestressed stretch-draw before the concreting of plate body 1, first opening longitudinal prestressing reinforcing bar 2 combines closely with the concrete in plate body 1, because the concrete of plate body 1 is formerly to open longitudinal prestressing reinforcing bar 2 just to build and form before putting, put Zhang Houxian open the retraction trend of longitudinal prestressing reinforcing bar 2 can be more abundant with concrete, combination densely, thereby there is larger bond stress.After the concreting of plate body 1 completing concrete curing, to first open longitudinal prestressing reinforcing bar 2 and pass through tensioning system anchoring with plate body 1, between the end of first opening longitudinal prestressing reinforcing bar 2 and plate body 1, by tensioning system, be fixedly connected with, thereby plate body 1 and the problem of first opening strength deficiency when only relying on bond stress between longitudinal prestressing reinforcing bar 2 and being connected have been solved, and by the mode of anchoring, in plate body 1 end, set up prestress system, significantly increase the concrete intensity that is positioned at plate body 1 end, improved the application life of plate body 1.
As depicted in figs. 1 and 2, the present embodiment slab ballastless track concrete track slab in plate body 1, be provided with some first open longitudinal prestressing reinforcing bar 2 in, in plate body 1, be also provided with some transverse prestressed reinforcing steel bars 3 of first opening.
First open transverse prestressed reinforcing steel bar 3 and refer to the prestressed reinforcement that extends and be parallel to the cross central line 1-2 of plate body along the width of plate body 1, first opening transverse prestressed reinforcing steel bar 3 is also to complete prestressed stretch-draw before the concreting of plate body 1, first opens transverse prestressed reinforcing steel bar 3 and combines closely with the concrete in plate body 1.
Similar to the effect of first opening 2 anchorings of longitudinal prestressing reinforcing bar, because the concrete of plate body 1 is formerly to open transverse prestressed reinforcing steel bar 3 to put Zhang Yihou and build and form again, first open transverse prestressed reinforcing steel bar 3 in retraction process can with concrete more fully, be combined densely, thereby there is larger bond stress.After the concreting of plate body 1 completes, to first open transverse prestressed reinforcing steel bar 3 and plate body 1 anchoring, between the end of first opening transverse prestressed reinforcing steel bar 3 and plate body 1, by anchoring piece, be fixedly connected with, thereby plate body 1 and the problem of first opening strength deficiency when only relying on bond stress between transverse prestressed reinforcing steel bar 3 and being connected have been solved, and by the mode of anchoring, in plate body 1 end, set up prestress system, significantly increase the concrete intensity that is positioned at plate body 1 end, improved the application life of plate body 1.
All the other structures refer to embodiment 1.
As shown in Figures 3 to 5, in the present embodiment slab ballastless track concrete track slab, first open longitudinal prestressing reinforcing bar 2 by anchor plate 4 and plate body 1 anchoring, anchor plate 4 is cylindrical shape, the internal thread hole 4a running through along being axially arranged with of anchor plate 4, the end of first opening longitudinal prestressing reinforcing bar 2 is provided with external thread section 5, first opening longitudinal prestressing reinforcing bar 2 is threaded with anchor plate 4, and the end face interference of anchor plate 4 and plate body 1, formerly open under the prestressing force screen resilience effect of longitudinal prestressing reinforcing bar 2, anchor plate 4 is connected with the end face cassette of plate body 1.
It should be noted that, in all the other embodiments, first open that between longitudinal prestressing reinforcing bar 2 and anchor plate 4, also can to adopt the modes such as pin joint to carry out fastening, also can adopt the mode of first opening longitudinal prestressing reinforcing bar 2 pier noses, all can play similar effect.
All the other structures refer to embodiment 1.
As shown in Figures 3 to 5, in the present embodiment slab ballastless track concrete track slab, first open longitudinal prestressing reinforcing bar 2 and first open transverse prestressed reinforcing steel bar 3 all by anchor plate 4 and plate body 1 anchoring, anchor plate 4 is cylindrical shape, the internal thread hole 4a running through along being axially arranged with of anchor plate 4, first open the end of longitudinal prestressing reinforcing bar 2 and first open on the end of transverse prestressed reinforcing steel bar 3 and be provided with external thread section 5, first open longitudinal prestressing reinforcing bar 2 and first open transverse prestressed reinforcing steel bar 3 and be all threaded with anchor plate 4, and the end face interference of anchor plate 4 and plate body 1, formerly open longitudinal prestressing reinforcing bar 2 or first open under the prestressing force screen resilience effect of transverse prestressed reinforcing steel bar 3, anchor plate 4 is connected with the end face cassette of plate body 1.
It should be noted that, in all the other embodiments, first open longitudinal prestressing reinforcing bar 2, first open that between transverse prestressed reinforcing steel bar 3 and anchor plate 4, also can to adopt the modes such as pin joint to carry out fastening, all can play similar effect.
During for the ease of production, manufacture, the end of first open longitudinal prestressing reinforcing bar 2, first opening transverse prestressed reinforcing steel bar 3 is coaxially fixedly connected with connecting rod 7, the other end of connecting rod 7 is fixedly connected with stretch-draw jack 8b, as lengthening and being connected use with stretch-draw jack 8b, during stretch-draw without jack end being inserted in plate body 1, after connecting by connecting rod 7, anchor recess hole dimension is without being greater than jack end size, thus the intensity of raising plate body 1 end.
All the other structures refer to embodiment 2.
As shown in Figure 5, Figure 6, the longitudinal prestressing reinforcing bar 2 of first opening in the present embodiment slab ballastless track concrete track slab is packaged in plate body 1, first opens the inside that longitudinal prestressing reinforcing bar 2 is arranged on plate body 1, and avoids its end to be directly exposed to plate body 1 outside.Herein, conventionally after manufacture completes by the mode of mud jacking end-blocking by anchor plate 4 with first open longitudinal prestressing reinforcing bar 2 and be coated on and realize encapsulation in plate body 1, thereby the end of having avoided first opening longitudinal prestressing reinforcing bar 2 and first having opened transverse prestressed reinforcing steel bar 3 directly contacts with air, slow down the situation of prestressed reinforcement end corrosion, thereby improved track plates bulk life time.
In all the other embodiments, also can adopt remaining end-blocking mode, closed-end structure mutually to completely cut off, also realize encapsulation with outside atmosphere by first opening longitudinal prestressing reinforcing bar 2 and first opening transverse prestressed reinforcing steel bar 3.
All the other structures refer to embodiment 3.
As shown in Figure 5 and Figure 6, first opening longitudinal prestressing reinforcing bar 2 and first opening transverse prestressed reinforcing steel bar 3 in the present embodiment slab ballastless track concrete track slab is all packaged in plate body 1, first open longitudinal prestressing reinforcing bar 2 and first open the inside that transverse prestressed reinforcing steel bar 3 is arranged on plate body 1, thereby avoiding its end to be directly exposed to plate body 1 outside.Conventionally after manufacture completes, by the mode of sealing off and covering anchorage mortar mud jacking end-blocking, will first open longitudinal prestressing reinforcing bar 2, first open transverse prestressed reinforcing steel bar 3 and be coated in the lump in plate body 1 together with anchor plate 4, thereby the end of having avoided first opening longitudinal prestressing reinforcing bar 2 and first having opened transverse prestressed reinforcing steel bar 3 directly contacts with air, greatly slow down the situation of prestressed reinforcement end corrosion, thereby improved track plates bulk life time.
In all the other embodiments, also can adopt remaining end-blocking mode, closed-end structure mutually to completely cut off, also realize encapsulation with outside atmosphere by first opening longitudinal prestressing reinforcing bar 2 and first opening transverse prestressed reinforcing steel bar 3.
All the other structures refer to embodiment 4.
As shown in Figures 1 to 6, in plate body 1 in the present embodiment slab ballastless track concrete track slab, be provided with cage of reinforcement, cage of reinforcement is formed by some nonprestressed reinforcement colligations, first open longitudinal prestressing reinforcing bar 2 along longitudinal cage of reinforcement that passes of plate body 1 from the hole of cage of reinforcement, prestressed structure and non-prestressed structure are organically combined, and bulk strength and the shock resistance of track plates are more excellent.
All the other structures refer to embodiment 5.
As shown in Figures 1 to 6, in plate body 1 in the present embodiment slab ballastless track concrete track slab, be provided with cage of reinforcement, cage of reinforcement is formed by some nonprestressed reinforcement colligations, first open longitudinal prestressing reinforcing bar 2 and first open transverse prestressed reinforcing steel bar 3 respectively along the vertical and horizontal of plate body 1, from the hole of cage of reinforcement through cage of reinforcement, prestressed structure and non-prestressed structure are organically combined, and bulk strength and the shock resistance of track plates are more excellent.
All the other structures refer to embodiment 6.
embodiment 9
As shown in Figures 3 to 5, in the present embodiment slab ballastless track concrete track slab, the two ends of formerly opening longitudinal prestressing reinforcing bar 2 are respectively provided with a cylindrical anchor plate 4, between the outer face of anchor plate 4 and the face of cylinder, be provided with circular arc chamfering, circular arc chamfering is arranged at two one end that anchor plate 4 is adjacent, first open circular arc chamfering place on longitudinal prestressing reinforcing bar 2 two ends anchor plates 4 and be all arranged at one end that anchor plate 4 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 4 shapes are suitable, make anchor plate 4 and the contact surface of the access section of plate body 1 be circular arc, reduced the concentrated situation of stress, the diameter of anchor plate 4 is 33mm, circular arc chamfering radius is 3mm.
All the other structures refer to embodiment 5.
embodiment 10
As shown in Figures 3 to 5, in the present embodiment slab ballastless track concrete track slab, the two ends of formerly opening longitudinal prestressing reinforcing bar 2 are respectively provided with a cylindrical anchor plate 4, between the outer face of anchor plate 4 and the face of cylinder, be provided with circular arc chamfering, circular arc chamfering is arranged at two one end that anchor plate 4 is adjacent, first open circular arc chamfering place on longitudinal prestressing reinforcing bar 2 two ends anchor plates 4 and be all arranged at one end that anchor plate 4 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 4 shapes are suitable, make anchor plate 4 rounded with the contact surface of the access section of plate body 1, reduced the concentrated situation of stress, the diameter of anchor plate 4 is 25mm, circular arc chamfering radius is 8mm.
All the other structures refer to embodiment 5.
embodiment 11
As shown in Figures 3 to 5, in the present embodiment slab ballastless track concrete track slab, the two ends of formerly opening longitudinal prestressing reinforcing bar 2 are respectively provided with a cylindrical anchor plate 4, between the outer face of anchor plate 4 and the face of cylinder, be provided with circular arc chamfering, circular arc chamfering is arranged at two one end that anchor plate 4 is adjacent, first open circular arc chamfering place on longitudinal prestressing reinforcing bar 2 two ends anchor plates 4 and be all arranged at one end that anchor plate 4 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 4 shapes are suitable, make anchor plate 4 rounded with the contact surface of the access section of plate body 1, reduced the concentrated situation of stress, the diameter of anchor plate 4 is 33mm, circular arc chamfering radius is 7mm.
All the other structures refer to embodiment 5.
embodiment 12
As shown in Figures 3 to 5, in the present embodiment slab ballastless track concrete track slab, formerly open longitudinal prestressing reinforcing bar 2, the two ends of first opening transverse prestressed reinforcing steel bar 3 are all respectively provided with a cylindrical anchor plate 4, between the outer face of anchor plate 4 and the face of cylinder, be provided with circular arc chamfering, circular arc chamfering is arranged at two one end that anchor plate 4 is adjacent, first open longitudinal prestressing reinforcing bar 2, first open circular arc chamfering place on transverse prestressed reinforcing steel bar 3 two ends anchor plates 4 and be all arranged at one end that anchor plate 4 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 4 shapes are suitable, make anchor plate 4 rounded with the contact surface of the access section of plate body 1, reduced the concentrated situation of stress, the diameter of anchor plate 4 is 29mm, circular arc chamfering radius is 8mm.
All the other structures refer to embodiment 8.
embodiment 13
As shown in Figures 3 to 5, in the present embodiment slab ballastless track concrete track slab, formerly open longitudinal prestressing reinforcing bar 2, the two ends of first opening transverse prestressed reinforcing steel bar 3 are all respectively provided with a cylindrical anchor plate 4, between the outer face of anchor plate 4 and the face of cylinder, be provided with circular arc chamfering, circular arc chamfering is arranged at two one end that anchor plate 4 is adjacent, first open longitudinal prestressing reinforcing bar 2, first open circular arc chamfering place on transverse prestressed reinforcing steel bar 3 two ends anchor plates 4 and be all arranged at one end that anchor plate 4 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 4 shapes are suitable, make anchor plate 4 rounded with the contact surface of the access section of plate body 1, reduced the concentrated situation of stress, the diameter of anchor plate 4 is 30mm, circular arc chamfering radius is 5mm.
All the other structures refer to embodiment 8.
embodiment 14
As shown in Figures 3 to 5, in the present embodiment slab ballastless track concrete track slab, formerly open longitudinal prestressing reinforcing bar 2, the two ends of first opening transverse prestressed reinforcing steel bar 3 are all respectively provided with a cylindrical anchor plate 4, between the outer face of anchor plate 4 and the face of cylinder, be provided with circular arc chamfering, circular arc chamfering is arranged at two one end that anchor plate 4 is adjacent, first open longitudinal prestressing reinforcing bar 2, first open circular arc chamfering place on transverse prestressed reinforcing steel bar 3 two ends anchor plates 4 and be all arranged at one end that anchor plate 4 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 4 shapes are suitable, make anchor plate 4 rounded with the contact surface of the access section of plate body 1, reduced the concentrated situation of stress, the diameter of anchor plate 4 is 30mm, circular arc chamfering radius is 6mm.
All the other structures refer to embodiment 8.
embodiment 15
As shown in Figure 2, the present embodiment slab ballastless track concrete track slab in the present embodiment, is first opened transverse prestressed reinforcing steel bar 3 and in plate body 1, is gone to upper and lower two rows' distributions; First open longitudinal prestressing reinforcing bar 2 and in plate body 1, go to upper and lower two rows' distributions, and two row's longitudinal prestressing reinforcing bars are arranged between two row's transverse prestressed reinforcing steel bars, improve the shock resistance of track plates under the thump condition of bearing the heavy and high frequency capacity of larger axis and the raising of bulk strength, thereby extended the application life of track plates.
All the other structures refer to embodiment 2.
embodiment 16
As shown in Figure 2, the present embodiment slab ballastless track concrete track slab in the present embodiment, is first opened transverse prestressed reinforcing steel bar 3 and in plate body 1, is gone to upper and lower two rows' distributions; First open longitudinal prestressing reinforcing bar 2 and in plate body 1, go to upper and lower two rows' distributions, and two row's longitudinal prestressing reinforcing bars are arranged between two row's transverse prestressed reinforcing steel bars, significantly improve the shock resistance of track plates under the thump condition of bearing the heavy and high frequency capacity of larger axis and the raising of bulk strength, thereby extended the application life of track plates.
All the other structures refer to embodiment 4.
embodiment 17
As shown in Figure 2, the present embodiment slab ballastless track concrete track slab in the present embodiment, is first opened transverse prestressed reinforcing steel bar 3 and in plate body 1, is gone to upper and lower two rows' distributions; First open longitudinal prestressing reinforcing bar 2 and in plate body 1, go to upper and lower two rows' distributions, and two row's longitudinal prestressing reinforcing bars are arranged between two row's transverse prestressed reinforcing steel bars, significantly improve the shock resistance of track plates under the thump condition of bearing the heavy and high frequency capacity of larger axis and the raising of bulk strength, thereby extended the application life of track plates.
All the other structures refer to embodiment 6.
embodiment 18
As shown in Figure 2, the present embodiment slab ballastless track concrete track slab in the present embodiment, is first opened transverse prestressed reinforcing steel bar 3 and in plate body 1, is gone to upper and lower two rows' distributions; First open longitudinal prestressing reinforcing bar 2 and in plate body 1, go to upper and lower two rows' distributions, and two row's longitudinal prestressing reinforcing bars are arranged between two row's transverse prestressed reinforcing steel bars, significantly improve the shock resistance of track plates under the thump condition of bearing the heavy and high frequency capacity of larger axis and the raising of bulk strength, thereby extended the application life of track plates.
All the other structures refer to embodiment 8.
embodiment 19
Refer to Fig. 1 to Fig. 7, a kind of manufacture method of slab ballastless track concrete track slab, comprises the following steps:
A, the punching block of track plates 6 is in place;
B, with nonprestressed reinforcement, work out cage of reinforcement, longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar are penetrated to cage of reinforcement;
C, cage of reinforcement and longitudinal prestressing reinforcing bar are hung in punching block 6 together with transverse prestressed reinforcing steel bar, and on the end of longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar, anchor plate 4 is installed, anchor plate 4 is provided with internal thread hole 4a, in the end of longitudinal prestressing reinforcing bar and the end of transverse prestressed reinforcing steel bar, be equipped with external thread section 5, longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar are all threaded with anchor plate 4;
D, use connecting rod 7 are connected in place by longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar with tensioning system 8; One end of connecting rod 7 and tensioning system 8 are bolted to connection, and the other end of described connecting rod 7 is threaded with longitudinal prestressing reinforcing bar and/or transverse prestressed reinforcing steel bar.
E, carries out single initial tensioning to longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar;
F, respectively transverse prestressed reinforcing steel bar, longitudinal prestressing reinforcing bar are carried out to synchronous tension, form and first open transverse prestressed reinforcing steel bar 3 and first open longitudinal prestressing reinforcing bar 2;
G, concreting;
H, stream curing;
I, when concrete intensity reach design strength 80% after, put;
J, dismounting connecting rod 7;
K, the demoulding;
L, sealing off and covering anchorage.
Owing to first opening in figure, longitudinal prestressing reinforcing bar 2 is similar to the stretching-drawing structure of first opening transverse prestressed reinforcing steel bar 3, therefore not shown.
Adopt such manufacture method, track plates is not preset the duct of laying of anchor recess and prestressed reinforcement before having built, and the bond stress between tensioning process advanced person and prestressed reinforcement and concrete is larger, and the intensity of track plates is higher; Separately, complete the anchor recess hole dimension forming after stretch-draw less on track plates, thereby increased anchor recess concrete thickness around, further improved the intensity of track plates.
embodiment 20
Refer to Fig. 7, in figure, first open longitudinal prestressing reinforcing bar 2 similar to the stretching-drawing structure of first opening transverse prestressed reinforcing steel bar 3, therefore not shown.
A manufacture method for slab ballastless track concrete track slab as described in embodiment 16, comprises the following steps:
A, the punching block of track plates 6 is in place;
B, with nonprestressed reinforcement, work out cage of reinforcement, longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar are penetrated to cage of reinforcement;
C, cage of reinforcement and longitudinal prestressing reinforcing bar are hung in punching block 6 together with transverse prestressed reinforcing steel bar, and on the end of longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar, anchor plate 4 is installed, anchor plate 4 is provided with internal thread hole 4a, in the end of longitudinal prestressing reinforcing bar and the end of transverse prestressed reinforcing steel bar, be equipped with external thread section 5, longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar are all threaded with anchor plate 4;
D, use connecting rod 7 are connected in place by longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar with tensioning system 8; One end of connecting rod 7 and tensioning system 8 are bolted to connection, and the other end of described connecting rod 7 is threaded with longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar.
E, carries out single initial tensioning to longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar;
F, respectively longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar are carried out to synchronous tension, form and first open longitudinal prestressing reinforcing bar 2 and first open transverse prestressed reinforcing steel bar 3;
G, concreting;
H, stream curing;
I, when concrete intensity reach design strength 80% after, put;
J, dismounting connecting rod 7;
K, the demoulding;
L, sealing off and covering anchorage.
Adopt such manufacture method, track plates is not preset the duct of laying of anchor recess and prestressed reinforcement before having built, and the bond stress of tensioning process simply and between prestressed reinforcement and concrete is larger, and the intensity of track plates is higher; Separately, complete the anchor recess size forming after stretch-draw less on track plates, thereby increased anchor recess concrete thickness around, further improved the intensity of track plates.
embodiment 21
Refer to Fig. 7, in figure, first open longitudinal prestressing reinforcing bar 2 similar to the stretching-drawing structure of first opening transverse prestressed reinforcing steel bar 3, therefore not shown.
A manufacture method for slab ballastless track concrete track slab as described in embodiment 17, comprises the following steps:
A, the punching block of track plates 6 is in place;
B, with nonprestressed reinforcement, work out cage of reinforcement, by first opening longitudinal prestressing reinforcing bar 2 and first opening transverse prestressed reinforcing steel bar 3, penetrate in cage of reinforcement;
C, by cage of reinforcement and first open in the punching block 6 that longitudinal prestressing reinforcing bar 2 hangs in track plates together with first opening transverse prestressed reinforcing steel bar 3, and formerly open the end of longitudinal prestressing reinforcing bar 2 and first open anchor plate 4 is installed on transverse prestressed reinforcing steel bar 3; Anchor plate 4 is provided with internal thread hole 4a, and the end of formerly opening the end of longitudinal prestressing reinforcing bar 2 and first opening transverse prestressed reinforcing steel bar 3 is provided with external thread section 5, first opens longitudinal prestressing reinforcing bar 2, first opens transverse prestressed reinforcing steel bar 3 and be all threaded with anchor plate 4;
D, with connecting rod 7, will first open longitudinal prestressing reinforcing bar 2, and first open transverse prestressed reinforcing steel bar 3 and be connected in place with tensioning system 8; One end of connecting rod 7 and tensioning system 8 is fixing, and the other end of connecting rod 7 is threaded with first opening longitudinal prestressing reinforcing bar 2 or first open transverse prestressed reinforcing steel bar 3.
E, to first opening longitudinal prestressing reinforcing bar 2, first open transverse prestressed reinforcing steel bar 3 and carry out single initial tensioning;
F, to first opening longitudinal prestressing reinforcing bar 2, carry out synchronous tension, to first opening transverse prestressed reinforcing steel bar 3, carry out synchronous tension;
G, concreting;
H, stream curing;
I, when concrete intensity reach design strength 80% after, put;
J, the demoulding;
K, dismounting connecting rod 7;
L, sealing off and covering anchorage.
Adopt such manufacture method, track plates is not preset the duct of laying of anchor recess and prestressed reinforcement before having built, and the bond stress of tensioning process simply and between prestressed reinforcement and concrete is larger, and the intensity of track plates is higher; Separately, complete the anchor recess size forming after stretch-draw less on track plates, thereby increased anchor recess concrete thickness around, further improved the intensity of track plates.
embodiment 22
Refer to Fig. 7, in figure, first open longitudinal prestressing reinforcing bar 2 similar to the stretching-drawing structure of first opening transverse prestressed reinforcing steel bar 3, therefore not shown.
A manufacture method for slab ballastless track concrete track slab as described in embodiment 18, comprises the following steps:
A, the punching block of track plates 6 is in place;
A, with nonprestressed reinforcement, work out cage of reinforcement, by first opening longitudinal prestressing reinforcing bar 2 and first opening transverse prestressed reinforcing steel bar 3, penetrate in cage of reinforcement;
C, by cage of reinforcement and first open in the punching block 6 that longitudinal prestressing reinforcing bar 2 hangs in track plates together with first opening transverse prestressed reinforcing steel bar 3, and formerly open the end of longitudinal prestressing reinforcing bar 2 and first open anchor plate 4 is installed on transverse prestressed reinforcing steel bar 3; Anchor plate 4 is provided with internal thread hole 4a, and the end of formerly opening the end of longitudinal prestressing reinforcing bar 2 and first opening transverse prestressed reinforcing steel bar 3 is equipped with external thread section 5, first opens longitudinal prestressing reinforcing bar 2, first opens transverse prestressed reinforcing steel bar 3 and be all threaded with anchor plate 4;
D, with connecting rod 7, will first open longitudinal prestressing reinforcing bar 2, and first open transverse prestressed reinforcing steel bar 3 and be connected in place with tensioning system 8; One end of connecting rod 7 and tensioning system 8 is fixing, and the other end of connecting rod 7 is threaded with first opening longitudinal prestressing reinforcing bar 2 or first open transverse prestressed reinforcing steel bar 3.
E, to first opening longitudinal prestressing reinforcing bar 2, first open transverse prestressed reinforcing steel bar 3 and carry out single initial tensioning;
F, to first opening longitudinal prestressing reinforcing bar 2, carry out synchronous tension, to first opening transverse prestressed reinforcing steel bar 3, carry out synchronous tension;
G, concreting;
H, stream curing;
I, when concrete intensity reach design strength 80% after, put;
J, dismounting connecting rod 7;
K, the demoulding;
L, sealing off and covering anchorage.
Adopt such manufacture method, track plates is not preset the duct of laying of anchor recess and prestressed reinforcement before having built, and the bond stress of tensioning process simply and between prestressed reinforcement and concrete is larger, and the intensity of track plates is higher; Separately, complete the anchor recess size forming after stretch-draw less on track plates, thereby increased anchor recess concrete thickness around, further improved the intensity of track plates.
embodiment 23
Refer to Fig. 8 to Figure 13, a kind of tensioning equipment for the manufacture of slab ballastless track concrete track slab as described in embodiment 15, comprise by the suitable punching block 6 of several and plate body 1 shape, the quantity of punching block 6 arranges as required, first open longitudinal prestressing reinforcing bar 2, first open transverse prestressed reinforcing steel bar 3 and be all arranged at each punching block 6 inside, punching block 6 is along horizontal, longitudinal arrangement becomes punching block 6 matrixes, each first opens longitudinal prestressing reinforcing bar 2, the two ends of first opening transverse prestressed reinforcing steel bar 3 are provided with connecting rod 7, connecting rod 7 with first open longitudinal prestressing reinforcing bar 2, first open between transverse prestressed reinforcing steel bar 3 and coaxially connect, connecting rod 7 coaxial threaded in punching block 6 matrixes between adjacent two punching blocks 6 connect.The connecting rod 7 that is positioned at punching block 6 matrix outsides is fixedly connected with tensioning system 8, can, by tensioning system 8 application of forces and under the connection of the connecting rod 7 between each adjacent two punching blocks 6, realize many of synchronous tensions and first open longitudinal prestressing reinforcing bar 2 or first open transverse prestressed reinforcing steel bar 3.
Each first open longitudinal prestressing reinforcing bar 2, the both ends of first opening transverse prestressed reinforcing steel bar 3 are also provided with anchor plate 4, anchor plate 4 is cylindric, along axially running through of anchor plate 4, be provided with internal thread hole 4a, by internal thread hole 4a with first open longitudinal prestressing reinforcing bar 2, first open the default external thread section 5 in transverse prestressed reinforcing steel bar 3 ends and be threaded, anchor plate 4 radially protrudes from first to be opened longitudinal prestressing reinforcing bar 2 or first opens transverse prestressed reinforcing steel bar 3, after putting, follow prestressed reinforcement trend of rebound and from anchor, fit tightly also cassette with plate body 1 in punching block 6 and be connected.
By above-mentioned tensioning equipment, track plates is carried out to stretch-draw manufacture, can once to a plurality of track plates, carry out integral tension, improve the production efficiency of tensioning process, simultaneously, by being arranged at anchor plate 4 on presstressed reinforcing steel, evagination, after prestressed reinforcement of tensioning concreting, retraction trend by prestressed reinforcement realizes from anchor, the anchoring of prestressed reinforcement end when the prestressed reinforcement in the track plates that makes to make has the high bond stress that pre-tensioning system brings, when having post stretching concurrently and manufacturing, thus the bulk strength of track improved.
Between connecting rod 7 outside punching block 6 matrixes and stretch-draw jack 8b, be provided with crossbeam 8a, the connecting rod 7 that is positioned at punching block 6 matrix outsides is all fixedly connected with crossbeam 8a, stretch-draw jack 8b drives crossbeam 8a along lateral or longitudinal movement, some are first opened transverse prestressed reinforcing steel bar 3 or first open 2 simultaneous tensions of longitudinal prestressing reinforcing bar, and the production efficiency of tensioning process is high.
embodiment 24
Refer to Fig. 8 to Figure 13, a kind of tensioning equipment for the manufacture of slab ballastless track concrete track slab as described in embodiment 16, comprise by the suitable punching block 6 of several and plate body 1 shape, the quantity of punching block 6 arranges as required, first open longitudinal prestressing reinforcing bar 2, first open transverse prestressed reinforcing steel bar 3 and be all arranged at each punching block 6 inside, punching block 6 is along horizontal, longitudinal arrangement becomes punching block 6 matrixes, each first opens longitudinal prestressing reinforcing bar 2, the two ends of first opening transverse prestressed reinforcing steel bar 3 are provided with connecting rod 7, connecting rod 7 with first open longitudinal prestressing reinforcing bar 2, first open between transverse prestressed reinforcing steel bar 3 and coaxially connect, connecting rod 7 coaxial threaded in punching block 6 matrixes between adjacent two punching blocks 6 connect.The connecting rod 7 that is positioned at punching block 6 matrix outsides is fixedly connected with tensioning system 8, can, by tensioning system 8 application of forces and under the connection of the connecting rod 7 between each adjacent two punching blocks 6, realize many of synchronous tensions and first open longitudinal prestressing reinforcing bar 2 or first open transverse prestressed reinforcing steel bar 3.
At each, first open longitudinal prestressing reinforcing bar 2, the both ends of first opening transverse prestressed reinforcing steel bar 3 are also provided with anchor plate 4, anchor plate 4 is cylindric, along axially running through of anchor plate 4, be provided with internal thread hole 4a, by internal thread hole 4a with first open longitudinal prestressing reinforcing bar 2, first opening the default external thread section 5 in transverse prestressed reinforcing steel bar 3 ends is threaded, anchor plate 4 radially protrudes from first opens longitudinal prestressing reinforcing bar 2, or first open transverse prestressed reinforcing steel bar 3, after putting, anchor plate 4 follow prestressed reinforcement trend of rebound and from anchor, fit tightly with plate body 1 in punching block 6 and cassette is connected.
By above-mentioned tensioning equipment, track plates is carried out to stretch-draw manufacture, can once to a plurality of track plates, carry out integral tension, improved the production efficiency of tensioning process, simultaneously, by being arranged on presstressed reinforcing steel, the anchor plate 4 of evagination, at prestressed reinforcement of tensioning, and after concreting, by prestressed reinforcement, bounce back from anchor, when the prestressed reinforcement in the track plates that makes to make has the high bond stress that pre-tensioning system brings, the anchoring of prestressed reinforcement end while having post stretching manufacture concurrently, thereby improve the bulk strength of track, and because anchor plate 4 sizes are little, and without at the pre-buried anchor plate in track plates end, therefore, the weakening degree that 4 pairs of track plates bulk strengths of anchor plate are set is little.
embodiment 25
Refer to Fig. 8 to Figure 13, a kind of tensioning equipment for the manufacture of slab ballastless track concrete track slab as described in embodiment 17, comprise by the suitable punching block 6 of several and plate body 1 shape, the quantity of punching block 6 arranges as required, first open longitudinal prestressing reinforcing bar 2, first open transverse prestressed reinforcing steel bar 3 and be all arranged at each punching block 6 inside, punching block 6 is along horizontal, longitudinal arrangement becomes punching block 6 matrixes, each first opens longitudinal prestressing reinforcing bar 2, the two ends of first opening transverse prestressed reinforcing steel bar 3 are provided with connecting rod 7, connecting rod 7 with first open longitudinal prestressing reinforcing bar 2, first open between transverse prestressed reinforcing steel bar 3 and coaxially connect, connecting rod 7 coaxial threaded in punching block 6 matrixes between adjacent two punching blocks 6 connect.The connecting rod 7 that is positioned at punching block 6 matrix outsides is fixedly connected with tensioning system 8, can, by tensioning system 8 application of forces and under the connection of the connecting rod 7 between each adjacent two punching blocks 6, realize many of synchronous tensions and first open longitudinal prestressing reinforcing bar 2 or first open transverse prestressed reinforcing steel bar 3.
At each, first open longitudinal prestressing reinforcing bar 2, the both ends of first opening transverse prestressed reinforcing steel bar 3 are also provided with anchor plate 4, anchor plate 4 is cylindric, along axially running through of anchor plate 4, be provided with internal thread hole 4a, by internal thread hole 4a with first open longitudinal prestressing reinforcing bar 2, first opening the default external thread section 5 in transverse prestressed reinforcing steel bar 3 ends is threaded, anchor plate 4 radially protrudes from first opens longitudinal prestressing reinforcing bar 2, or first open transverse prestressed reinforcing steel bar 3, after putting, anchor plate 4 follow prestressed reinforcement trend of rebound and from anchor, fit tightly with plate body 1 in punching block 6 and cassette is connected.
By above-mentioned tensioning equipment, track plates is carried out to stretch-draw manufacture, can once to a plurality of track plates, carry out integral tension, improved the production efficiency of tensioning process, simultaneously, by being arranged at anchor plate 4 on presstressed reinforcing steel, evagination, after prestressed reinforcement of tensioning concreting, by prestressed reinforcement, bounce back from anchor, the anchoring of prestressed reinforcement end when the prestressed reinforcement in the track plates that makes to make has the high bond stress that pre-tensioning system brings, when having post stretching concurrently and manufacturing, thus the bulk strength of track improved.
embodiment 26
Refer to Fig. 8 to Figure 13, a kind of tensioning equipment for the manufacture of slab ballastless track concrete track slab as described in embodiment 18, comprise by the suitable punching block 6 of several and plate body 1 shape, the quantity of punching block 6 arranges as required, first open longitudinal prestressing reinforcing bar 2, first open transverse prestressed reinforcing steel bar 3 and be all arranged at each punching block 6 inside, punching block 6 is along horizontal, longitudinal arrangement becomes punching block 6 matrixes, each first opens longitudinal prestressing reinforcing bar 2, the two ends of first opening transverse prestressed reinforcing steel bar 3 are provided with connecting rod 7, connecting rod 7 with first open longitudinal prestressing reinforcing bar 2, first open between transverse prestressed reinforcing steel bar 3 and coaxially connect, connecting rod 7 coaxial threaded in punching block 6 matrixes between adjacent two punching blocks 6 connect.The connecting rod 7 that is positioned at punching block 6 matrix outsides is fixedly connected with tensioning system 8, can lead to tensioning system 8 application of forces and under the connection of the connecting rod 7 between each adjacent two punching blocks 6, realize many of synchronous tensions and first open longitudinal prestressing reinforcing bar 2 or first open transverse prestressed reinforcing steel bar 3.
At each, first open longitudinal prestressing reinforcing bar 2, the both ends of first opening transverse prestressed reinforcing steel bar 3 are also provided with anchor plate 4, anchor plate 4 is cylindric, along axially running through of anchor plate 4, be provided with internal thread hole 4a, by internal thread hole 4a with first open longitudinal prestressing reinforcing bar 2, first opening the default external thread section 5 in transverse prestressed reinforcing steel bar 3 ends is threaded, anchor plate 4 radially protrudes from first opens longitudinal prestressing reinforcing bar 2, or first open transverse prestressed reinforcing steel bar 3, after putting, anchor plate 4 follow prestressed reinforcement trend of rebound and from anchor, fit tightly with plate body 1 in punching block 6 and cassette is connected.
By above-mentioned tensioning equipment, track plates is carried out to stretch-draw manufacture, can once to a plurality of track plates, carry out integral tension, improved the production efficiency of tensioning process, simultaneously, by being arranged at anchor plate 4 on presstressed reinforcing steel, evagination, after prestressed reinforcement of tensioning concreting, by prestressed reinforcement, bounce back from anchor, the anchoring of prestressed reinforcement end when the prestressed reinforcement in the track plates that makes to make has the high bond stress that pre-tensioning system brings, when having post stretching concurrently and manufacturing, thus the bulk strength of track improved.
Sidepiece at punching block 6 matrixes is also fixedly installed some pedestals 9, stretch-draw jack 8b drives crossbeam 8a along laterally or longitudinally moving with respect to pedestal 9, some are first opened transverse prestressed reinforcing steel bar 3 or first open 2 simultaneous tensions of longitudinal prestressing reinforcing bar, and the production efficiency of tensioning process is high.
By reference to the accompanying drawings embodiments of the invention are described in detail above; but the present invention is not limited to above-described embodiment; in the ken possessing those of ordinary skills, can also make various variations, within these variations all belong to protection scope of the present invention.
Claims (2)
1. a manufacture method for slab ballastless track concrete track slab, is characterized in that, comprises the following steps:
A, the punching block of track plates is in place;
B, with nonprestressed reinforcement, work out cage of reinforcement, longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar are penetrated to cage of reinforcement;
C, cage of reinforcement, longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar are hung in punching block together, and on the end of longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar, anchor plate is installed, anchor plate is provided with internal thread hole, on longitudinal prestressing reinforcing bar and transverse prestressed reinforcing steel bar, be equipped with external thread section, longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar are all threaded with anchor plate;
D, with connecting rod, longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar are connected in place with tensioning system;
E, longitudinal prestressing reinforcing bar, transverse prestressed reinforcing steel bar are carried out to single initial tensioning;
F, respectively transverse prestressed reinforcing steel bar, longitudinal prestressing reinforcing bar are carried out to synchronous tension, form and first open transverse prestressed reinforcing steel bar and first open longitudinal prestressing reinforcing bar;
G, concreting;
H, stream curing;
I, when concrete intensity reach design strength 80% after, put;
J, dismounting connecting rod;
K, the demoulding;
L, sealing off and covering anchorage.
2. the manufacture method of slab ballastless track concrete track slab according to claim 1, it is characterized in that: in steps d, one end and the tensioning system of described connecting rod are fixed, and the other end of described connecting rod is threaded with longitudinal prestressing reinforcing bar or transverse prestressed reinforcing steel bar.
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| CN201410067809.6A CN103802211B (en) | 2012-04-28 | 2012-04-28 | A kind of slab ballastless track concrete track slab, manufacture method and tensioning equipment thereof |
| CN201210131219.6A CN102628242B (en) | 2012-04-28 | 2012-04-28 | Plate-type ballastless track concrete track plate, manufacturing method thereof, and stretching device thereof |
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| CN201210131219.6A CN102628242B (en) | 2012-04-28 | 2012-04-28 | Plate-type ballastless track concrete track plate, manufacturing method thereof, and stretching device thereof |
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| CN201410067809.6A Active CN103802211B (en) | 2012-04-28 | 2012-04-28 | A kind of slab ballastless track concrete track slab, manufacture method and tensioning equipment thereof |
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| CN102995503B (en) * | 2012-12-12 | 2016-01-20 | 中铁二十三局集团有限公司 | A kind of non-fragment orbit pre-tensioned prestressing structure switching turnout plate |
| CN104264533B (en) * | 2014-08-07 | 2016-02-24 | 中铁二十三局集团轨道交通工程有限公司 | A kind of bidirectional pre-tensioned prestressed concrete railway board and production method thereof |
| CN104942989A (en) * | 2015-07-03 | 2015-09-30 | 四川睿铁科技有限责任公司 | Manufacturing process suitable for alpine region high-speed railway large-gauge track board |
| CN106808579A (en) * | 2015-12-01 | 2017-06-09 | 衡阳市新德力预应力有限公司 | A kind of high-speed railway track plate pre-stress stretching method |
| CN105780611B (en) * | 2016-01-08 | 2018-05-18 | 中铁二十二局集团第一工程有限公司 | A kind of track plates |
| CN105643792B (en) * | 2016-02-04 | 2017-12-05 | 秦皇岛老虎重工有限公司 | Bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment |
| CN107144468B (en) * | 2017-06-19 | 2023-05-23 | 中铁六局集团有限公司 | Ballastless track horizontal pulling and pressing loading system and loading method |
| CN110485215A (en) * | 2019-09-11 | 2019-11-22 | 扬州大学 | A kind of novel pretensioned prestressing steel-continuous-fiber muscle enhancing is without tiny fragments of stone, coal, etc. Reactive Powder Concrete track plates and preparation method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103802211B (en) | 2016-02-17 |
| CN102628242A (en) | 2012-08-08 |
| CN103802211A (en) | 2014-05-21 |
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