CN1297712C - Floating road bed - Google Patents
Floating road bed Download PDFInfo
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- CN1297712C CN1297712C CNB2004100354411A CN200410035441A CN1297712C CN 1297712 C CN1297712 C CN 1297712C CN B2004100354411 A CNB2004100354411 A CN B2004100354411A CN 200410035441 A CN200410035441 A CN 200410035441A CN 1297712 C CN1297712 C CN 1297712C
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- 238000013016 damping Methods 0.000 claims abstract description 78
- 238000002955 isolation Methods 0.000 claims description 60
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Classifications
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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
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
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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
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Railway Tracks (AREA)
Abstract
The present invention relates to the track structure of a railway, which comprises a floating slab and a spring vibration isolator, wherein the floating slab is elastically supported on the spring vibration isolator. The present invention overcomes the defect that rubber floating slabs, etc. in the prior art can only meet low and middle level vibration damping requirements, the defect of complicated structure, etc., which meets middle and high level vibration damping requirements. The present invention not only has the advantage of simple structure but also enhances systematic stability and driving safety.
Description
Technical field
The invention belongs to railway ballast, especially relate to a kind of track structure of railway, specifically can be railway, subway, city railway, elevated railway, high-speed railway etc.
Background technology
Traditional railway or city railway track structure when the close together of circuit and above ground structure, can produce bigger vibration and influence of noise to it.Vibration and and noise produce mainly due to the irregularity of wheel track and relative motion, wherein noise propagates in the building by air dielectric and (is called noise one time), vibration is then by track-railway roadbed-tunnel wall-ground, perhaps track-railway roadbed-bridge-bridge pier-ground passes on the building, amplify the low frequency vibration that inspires floor, the secondary noise that the radio-frequency component that does not attenuate in the vibration source then sends by wall, floor and ceiling by the coupling of building structure itself again.This vibration and noise all can constitute harmful effect to the people.
According to above-mentioned cognition, countries in the world have been developed vibration and noise reducing measure miscellaneous successively, for example absorb with acoustic screen and isolate a noise, control with spring secures rail to sleeper of all kinds and railway roadbed pattern and vibrate and the secondary noise, more famous for example have Cologne egg and an elasticity gumshoe.
The low-grade vibration damping that Cologne egg and elasticity gumshoe can satisfy the 5-8 decibel requires (referring to insert loss, down together), but the lateral stiffness of Cologne egg is lower, is unsuitable for curved section; Come off as rubber process or the bad rubber ring that also can cause of material, influence traffic safety; The elasticity gumshoe is water inlet and dust easily, is difficult for maintenance and changes.
The rubber plate of floating can satisfy the middle-grade vibration damping requirement of 8-15 decibel, generally is made up of float plate and rubber bearing piece or lamination steel plate rubber bearing piece, and the plate of floating is formed by concrete prefabricated usually, and length is shorter.The rubber plate of floating has following shortcoming: rubber bearing piece or lamination steel plate rubber bearing piece each to the rigidity mutual restriction, lateral stiffness is low, can not satisfy the lateral stability requirement of railway roadbed, therefore except that the rubber bearing piece of vertical supporting, also need the rubber bearing piece of lateral support, complex structure; The rubber bearing piece is hidden in below the plate of floating, and is difficult to leveling, maintenance and replacing, especially can't be from floating ballast bed side or the end face maintenance; The plate limited length of floating resonates easily, adds that the damping of rubber own is too little, can not absorb the vibrational energy of the plate of floating, and causes the panel vibration of floating to strengthen, and the float car internal vibration of plate vibration isolation location and noise of rubber obviously improves rail friction aggravation; Rubber is to material and technological requirement height, and easily aging, the life-span is limited, and it is bigger to train operation and civic trip influence to change the rubber bearing piece.
For higher vibration damping requirement, i.e. high-grade vibration damping requirement between 15 decibels-40 decibels of the effectiveness in vibration suppression, float plate or technical being difficult to of rubber realizes, or economy is relatively poor.
Summary of the invention
In order to overcome above-mentioned defective, satisfy medium-to-high grade vibration damping requirement, the present invention proposes a kind of new floating ballast bed system.
Floating ballast bed system of the present invention comprises float plate and spring vibration isolation device, the plate of floating flexibly is supported on the spring vibration isolation device, the spring vibration isolation device is made of spring and spring housing, spring places among the spring housing, at least the part surface of spring is provided with damping-constraining, and perhaps spring is local at least embeds among the damping material.
Specific implementation is: one, and the spring housing of spring vibration isolation device has hermetically-sealed construction, is provided with the fluid damping material in the housing, and the spring bottom is immersed in the fluid damping material; Its two, the part surface at least of spring is provided with damping-constraining, perhaps spring is local at least embeds among the solid damping material.
That the plate itself of floating is is tabular, frame shape or ladder shape, and the spring vibration isolation device roughly is evenly distributed in the plate both sides of floating.The spring vibration isolation device can have two kinds at least with the position relation of the plate of floating: a kind of is the below that the spring vibration isolation device is arranged on the plate of floating, and is bearing on the outside bottom surface of the plate of floating, and can be referred to as external; Another kind is that the spring vibration isolation device is arranged in the reservation through hole of the plate of floating, and on the inwall of through hole support stop is set, and the plate of floating is supported on the spring vibration isolation device by support stop, can be referred to as built-in.
Support stop can be that the plate of floating is reserved concrete structure on the through-hole wall, also can be to embed concrete metal embedded part, the through hole of plate perhaps floated is embedded with joint sheeve, on the joint sheeve inwall, support stop is set again, wherein support stop can weld together with joint sheeve in advance, and joint sheeve pours into an integrated entity with the plate of floating then; Support stop also can be the baffle ring of an integral body.
For can be from float plate and adjust the height and the levelness of floating plate of the plate top jacking of floating, on reservation through-hole wall or coupling sleeve inwall, the jacking block is set, and between spring vibration isolation device and support stop, pad is set, the central authorities of pad leave the jacking through hole, height and the gradient that can regulate the plate of floating by the gross thickness of adjusting pad; Support stop also can be the baffle ring of an integral body.
Gasket construction is simple, power transmission is big, solid and reliable, but can not steplessly heighten, the invention provides the governor motion that another kind can steplessly be heightened for this reason, promptly be provided with between spring vibration isolation device and support stop and regulate bolt and regulate base plate, the plate of floating is by support stop, adjusting base plate and regulate bolt bearing on the spring vibration isolation device.Wherein be divided into two kinds of forms of nut overhead and nut underneath type again: the nut overhead is the nut setting or is fixed on the adjusting base plate that the nut underneath type is the nut setting or is fixed on the spring vibration isolation device.
End face, pad or adjusting base plate is big or small compatible on the spring housing of support stop opening and shape and spring vibration isolation device, and the overlapping that can misplace, after promptly spring vibration isolation device, pad or adjusting base plate being put into the support stop below from the opening top, vibration isolator, pad or adjusting base plate are rotated to an angle around vertical pivot, and end face, pad or the dislocation of adjusting base plate overlap on support stop and the spring housing.
The length of the every block of plate of floating is generally 10-60 rice, usually by concrete cast-in-situ or prefabricated forming, and also can be by concrete and steel work be combined into; When the plate of floating when being prefabricated, can vertically connect by the prefabricated daughter board of polylith and constitute long plate of floating, the end face of daughter board is coarse plane or is provided with concavo-convex cooperation, fills with damping material, elastomeric material or concrete between daughter board and the daughter board and formation connects; Daughter board and daughter board can cooperate in that longitudinal section is concavo-convex, also can overlook and establish concavo-convex cooperation on the section, also can establish concavo-convex cooperation at both direction simultaneously.
Longer floating ballast bed can by polylith float plate vertically butt joint form; For the plate that allows to float expands with heat and contract with cold, leave the gap of expanding with heat and contract with cold between plate and the plate; For can be stressed at vertical and horizontal coordination between plate and the plate, the adjacent plate of floating connects by connector; Described connector comprises connecting rod and sliding sleeve, forms axial sliding fit between them, radially constraint mutually, and connecting rod and sliding sleeve are individually fixed on the adjacent plate of floating or are embedded in adjacent floating in advance and put in the plate.
In order to guarantee the smooth transition between floating ballast bed section and the adjacent railway roadbed (as fixing railway roadbed), the float plate adjacent with other railway roadbed carries out the transition to the rigidity close with adjacent railway roadbed in vertical direction at least gradually at the mean rigidity of unit length, its can be by equal rigidity but the spring vibration isolation device of different arranging densities realize, perhaps by different-stiffness but the spring vibration isolation device of equal arranging density realize.
In order to prevent the vibration isolator horizontal shift, be provided with coupling arrangement in the upper and lower surface of spring vibration isolation device, this device links respectively with float plate and basis, and it is bolt, perhaps concaveconvex structure.
For the damping that strengthens bed system or float plate itself, suppress resonance, reduce the vibration and the noise of the plate of floating itself, damping element or constrained damping structure are set on the plate of floating.
According to structural dynamics and vibration isolation principle, a certain link adds flexible member in the middle of chain is propagated in vibration, reduce system frequency, just can the interfering frequency of shielding system intrinsic frequency more than 1.4 times, interfering frequency is high more with the ratio of intrinsic frequency, disturb vibration just to be isolated thoroughly more, vibration has not had, and solid-borne sound just can not produce yet; The effect of damping then is the resonance that suppresses system resonance and structure itself, tends towards stability very soon after system is disturbed.Therefore the vibrating isolation system intrinsic frequency is low more, and vibration isolating effect is high more, and this just requires mass of system to be the bigger the better, and spring is high more good more.But mass of system all has the restriction scope with spring at different nodes in the practice, can not arbitrarily enlarge or reduce, as for railway rail pad, Cologne egg and elasticity gumshoe, rail and wheel are fixed to mass of vibration, can only increase supporting elasticity, but elasticity is crossed conference and is caused the rail distortion excessive, and lateral stiffness is on the low side, influences traffic safety; So far the rubber plate of floating, its vertical elasticity, lateral stiffness and quality mutual restriction can't be designed both simple in structure, economically feasible, can satisfy the system of medium-to-high grade vibration damping requirement again.
The spring vibration isolation device of the floating ballast bed employing of the present invention, floating ballast bed have well that each need not lateral support to stability and elasticity, simple in structure; But the spring vibration isolation device is very convenient from the just leveling of plate side or end face, maintenance and the replacing of floating; The plate length of floating can design as required, can avoid resonance frequency; The plate of floating adopts damping structure, can improve the structural damping of floating plate itself, inhibition the float structural vibration and the noise of plate itself; Floating is provided with integrated damping structure in damping element or the spring vibration isolation device on the plate, can absorb the structural vibration energy and the rigid body vibrational energy of the plate of floating, and improves the floating ballast bed stability of a system, the quake-resistant safety of raising traffic safety and railway roadbed.Described spring has very high elasticity and very wide elastic range for design alternative, both can design floating ballast bed instead of rubber simple in structure, that the satisfy middle-grade vibration damping requirement plate of floating, also can design satisfy high-grade vibration damping requirement floating ballast bed.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the cross-sectional drawing of Fig. 1;
Fig. 3 is the local enlarged diagram of Fig. 2;
Fig. 4 is that Fig. 3 sealing and dustproof covers the vertical view when opening;
Fig. 5 is the structural representation of the embodiment of the invention 2;
Fig. 6 is the cross-sectional drawing of Fig. 5;
Fig. 7 is the local enlarged diagram of the A-A section of Fig. 5;
Fig. 8 is the structural representation of the embodiment of the invention 3;
Fig. 9 is the cross-sectional drawing of Fig. 8;
Figure 10 is one of local enlarged diagram of Fig. 9;
Figure 11 be Fig. 9 local enlarged diagram two;
Figure 12 is the structural representation of embodiment 4;
Figure 13 is the schematic partial cross sectional of Figure 12;
Figure 14 is the structural representation of embodiment 5;
Figure 15 is the A-A sectional drawing of Figure 14;
Figure 16 is the structural representation of embodiment 6;
Figure 17 is the vertical view of Figure 16;
Figure 18 is the structural representation of embodiment 7;
Figure 19 is the vertical view of Figure 18;
Figure 20 is the structural representation of embodiment 8;
Figure 21 is the skiagraph of Figure 20.
1, the plate of floating, 1a is board-like, and 1b is a projective table type, and 1c is the ladder formula, and 1d is a frame type; 2, spring vibration isolation device; 3, joint sheeve, 3a are the jacking block; 4 support stops; 5, spring housing, 5a are upper plate, and 5b is a lower shoe, and 5c is a seal, and 5d is a slipmat; 6, spring, 6a are helical spring, and 6b is the dish spring, and 6c is the rubber-metal complex spring; 7, damping, 7a is fluid damping, and 7b is the solid damping, and 7c is a damping conductor, and 7d is the damping-constraining cover; 8, pad; 9, regulate bolt, 9a is a double-screw bolt, and 9b is for regulating base plate; 10, damping-constraining; 11, horizontal-associate bar; 12, connector, 12a connecting rod, 12b sliding sleeve, 12c base; 13, metal sheet; 14, rubber; 15, anchor bolt; 16, rail.
The specific embodiment
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the plate 1a that floats is tabular, is formed by the concrete cast-in-site, at the corresponding rail outer fix of the plate of floating two exhausting holes that distribute equably; Be embedded with joint sheeve 3 in the through hole, be welded with support stop 4 on its inwall, the plate 1a that floats flexibly is supported on the spring vibration isolation device 2 by support stop 4, constitutes built-in type floating track bed.
The internal construction of joint sheeve 3 and spring vibration isolation device 2 as shown in Figure 3, comprise helical spring 6a and spring housing 5, spring housing 5 is made up of two spring spools up and down, wherein upper bush is provided with a upper plate 5a that can transmit spring-loaded power, lower sleeve is provided with lower shoe 5b, both are the steel weldment, by flexible seal ring 5c sealing and be connected as one; Be provided with fluid damping 7a in the spring spool, be full-bodied methyl-silicone oil herein, and helical spring 6a is fixed in the spring spool, and the bottom of spring is immersed in the fluid damping 7a; The bottom surface of lower shoe 5b is provided with the very high mechanical brakeman 5d of friction factor, prevents the displacement of spring vibration isolation device horizontal direction.
For can be from float plate and adjust the height and the levelness of floating plate of the plate top jacking of floating, jacking block 3a is set on the coupling sleeve inwall, and between the upper plate 5a of spring vibration isolation device and support stop 4, pad 8 is set, the central authorities of pad leave the jacking through hole, height and the gradient that can regulate the plate of floating by the gross thickness of adjusting pad.Coupling sleeve also is provided with the sealing and dustproof lid, and it is fixed on the jacking block 3a.
Referring to Fig. 4, the upper plate 5a of support stop 4 opening shapes and spring vibration isolation device and the shape of pad 8 are square, and size is compatible, after from opening top spring vibration isolation device and pad being put into the support stop below successively, vibration isolator and pad are rotated to an angle around vertical pivot, and the upper plate 5a of support stop and spring vibration isolation device, pad 8 dislocation overlap.
For the structural vibration and the noise of the plate that suppresses to float itself, partly be provided with constrained damping structure 10 in the upper and lower surface of the plate of floating, its steel plate by the high damping visco-elasticity polyurethane damping layer of one deck 1-3 millimeters thick and a 2-5 millimeters thick bonds mutually and constitutes.When the plate of floating is subjected to the vibrational excitation of track to produce vibration deformation, because the constraint steel plate is inconsistent with the plate distortion of floating, force the damping material layer to take place to be cut into main distortion, the very high fissipation factor that has because of described damping material, most of vibrational energy can be converted into heat exhaustion absorbs, thereby can improve the structural damping of the plate of floating, suppress mesomerism.
During actual the use, the quiet dynamic loading that the train rail is born is delivered on the plate 1a that floats, the plate 1a that floats passes to helical spring 6a by support stop 4, pad 8 and upper plate 5a again, constitute a vibrating isolation system that intrinsic frequency is lower by the plate of floating, spring and damping, the medium-high frequency dynamic loading that is delivered on the plate of floating is isolated.
Because helical spring can design arbitrarily as required in the elasticity and the supporting capacity of all directions,, also can design and satisfy the floating ballast bed of high-grade vibration damping requirement so both can design the floating ballast bed instead of rubber that the satisfies middle-grade vibration damping requirement plate of floating.
Floating ballast bed general requirements lateral stiffness is lower than its vertical stiffness, to keep the lateral stability of railway roadbed, because helical spring all has good elasticity in all directions, and the ratio of its lateral stiffness and vertical stiffness also can design arbitrarily as requested, so floating ballast bed have well respectively to stability, need not lateral support, simple in structure; But it is built-in type floating track bed from just leveling of plate top surface, maintenance and the replacing of floating, very convenient; Float plate because of cast in situs, and its length can design as required, can avoid resonance frequency; The plate of floating adopts damping structure, can improve the structural damping of floating plate itself, inhibition the float structural vibration and the noise of plate itself; Be integrated with the fluid damping structure in the spring vibration isolation device, can absorb the structural vibration energy and the rigid body vibrational energy of the plate of floating, improve the floating ballast bed stability of a system, improve the quake-resistant safety of traffic safety and railway roadbed, also suppressed the intrinsic vibration of spring itself.
Embodiment 2:
As Fig. 5, Fig. 6, shown in Figure 7, be that with the difference of embodiment 1 soffit of the plate 1b that floats is provided with boss, spring vibration isolation device 2 is supported on this boss outside recess, forms the external plate of floating.The spring vibration isolation device is basic close with embodiment 1, the spring housing profile is a cuboid, form and connect by sleeve up and down with rubber seal, be placed with two helical spring 6a in it, helical spring upper and lower side embeds respectively among the solid damping material 7b, as pour into a mould the curable high damping visco-elasticity polyurethane in back, both provided damping for the spring vibration isolation device, played the effect of sleeve up and down that connects again, described solid damping is compared with fluid damping, be not afraid of into water, only can not establish sealing, even do not establish spring spool from the waterproof angle.The vibration isolator of this many springs is bigger than the vibration isolator supporting capacity of single spring, and cost performance is good, but volume is also corresponding big, relatively is applicable to the external plate of floating.
The top of vibration isolator also is provided with pad, is used to adjust the height and the level of floating plate.Lower roof plate connects with mechanical brakeman with float plate and basis respectively on the vibration isolator in use, prevents the displacement of spring vibration isolation device horizontal direction.
The external lateral-supporting that plate also need not be extra of floating can carry out leveling, maintenance and replacing from the side, and is very convenient.
Embodiment 3:
As Fig. 8, Fig. 9, Figure 10, shown in Figure 11, compare with embodiment 1, the plate 1c that floats is a ladder shape, the spring vibration isolation device is an external, form with a plurality of parallel horizontal-associate bars 11 by two parallel cast-in-situ concrete beam slabs, it is steel pipe herein, horizontal-associate bar surface in concrete beam plate is provided with anchor rib, form firm the connection with concrete beam plate, upper and lower surface and lateral surface at concrete beam plate are provided with restriction damping layer 10, and its steel plate by the high damping modified asphalt layer of a 2-3 millimeters thick and a 2-5 millimeters thick bonds mutually and constitutes.When concrete beam plate is subjected to the vibrational excitation of track to produce vibration deformation, because constraint steel plate and concrete beam plate distortion are inconsistent, force the damping material layer to take place to be cut into main distortion, the very high fissipation factor that has because of described damping material, most of vibrational energy can be converted into heat exhaustion and absorb, thus the structural damping that has improved concrete beam plate.
Spring vibration isolation device and embodiment 1 are close substantially, spring in the vibration isolator is dish spring 6b, by solid damping material 7b (being high-damping rubber herein) dish spring and spring housing are combined as a whole, its upper plate 5a connects with the crab bolt of floating, and lower shoe 5b is provided with a locating hole, when installing and using, the basis is provided with an anchor bolt 15, and as expansion bolt, locating hole is enclosed within on the bolt cap of anchor bolt, prevent the vibration isolator transverse shift, the railway roadbed safety and stability.Because the dish spring has enough lateral stiffnesses, therefore need not extra lateral support; High-damping rubber and dish spring provide damping, absorb vibrational energy; High-damping rubber and dish spring carry jointly, the supporting capacity height; The dish spring is wrapped up by high-damping rubber, is not afraid of into water, only can not establish sealing from the waterproof angle, does not even establish spring spool, and is simple in structure, cost is low.
Spring in the vibration isolator also can be the rubber-metal complex spring, and this example is the metal sandwich rubber spring, sees Figure 11, and it replaces stacked sulfuration connection by multilayer rubber 14 and stacked conducting plate 13 and forms; Its shape can be multi-faceted column or cylinder, and its center is provided with the damping conductor 7c that solid damping material (as high-damping polyurethane) is formed; The cross section of metal sheet 13 is a polyline shaped, when metal sandwich rubber spring horizontal direction force, rubber layer not only had been subjected to shear but also by compression, it is big when ratio of rigidity is subjected to pure shear, by the angle with rational design, and the design of the thickness of metal sheet and rubber layer ratio, the metal sandwich rubber spring can have enough lateral stiffnesses, need not extra lateral support, simple in structure; Rubber and damping conductor can provide damping, suppress resonance.
The metal sandwich rubber spring also is applicable to other embodiment in the present embodiment, and rubber also can substitute with macromolecular materials such as elastic polyurethanes.
Embodiment 4:
As Figure 12, Figure 13, shown in, present embodiment is substantially the same manner as Example 1, difference is: the plate 1d that floats is a frame shape, height-regulating mechanism is for regulating bolt 9; Regulating bolt is the nut overhead, by double-screw bolt 9a with regulate base plate 9b and constitute, threaded engagement between the two, the plate 1d that floats by support stop 4, regulate base plate 9b and regulate bolt 9a and be supported on the upper plate 5a of spring vibration isolation device.When the height of plate 1d and levelness were floated in adjusting, rotation double-screw bolt 9a can accomplish stepless heightening.Loosening in order to prevent double-screw bolt, the loose nut of also can setting up defences on the double-screw bolt.
With another difference of embodiment 1 be to save coupling sleeve, reserve direct pre-buried embedding support stop 4 on the through-hole wall at the plate of floating, support stop 4 can be the baffle ring of an integral body, also can be the metal, rod-shaped body of basic center symmetric arrangement more than two, this is simple in structure, and cost is low.
Spring wire surface in the spring vibration isolation device is provided with damping-constraining cover 7d, has both suppressed the intrinsic vibration of spring itself, again for the spring vibration isolation device provides damping, has improved floating ballast bed system damping ratio, has improved railway roadbed stability and traffic safety.
Embodiment 5:
As Figure 14, shown in Figure 15, the plate of floating is spliced by the concrete prefabricated daughter board of polylith, its longitudinal terminal surface is provided with concavo-convex cooperation, and butting surface is rough surface, fills and form with solid damping material 7b (as the high damping modified bitumen) between daughter board and the daughter board to connect.The shape of this daughter board can be tabular, also can be frame shape or ladder shape.
Present embodiment is owing to adopt prefabricated daughter board, and speed of application is fast, is fit to wide-scale adoption; Its longitudinal terminal surface is provided with concavo-convex cooperation, and plate aligns when installing with plate easily; Because filling and form with damping material with the gap between the daughter board, daughter board connects, making between the adjacent daughter board can cooperative bearing, vibrational energy between daughter board transmits damped material and intercepts, the damped material of vibrational energy absorbs, therefore the plate of floating that is spliced has good damping characteristic, and the vibration and the noise of the plate itself of floating will significantly be decayed.If be provided with damping structure in the spring vibration isolation device simultaneously, floating ballast bed will have the higher system damping ratio, can guarantee railway roadbed stability and traffic safety.
Embodiment 6
As Figure 16, shown in Figure 17, floating ballast bedly generally vertically arrange butt joint and forms by the polylith plate of floating, leave the flexible gap of heat expansion between plate and the plate, and by the connector connection, 3-5 connector generally established in a joint.Present embodiment has been showed the joint and the connector of the float plate and the plate of floating; Connector comprises connecting rod 12a and sliding sleeve 12b, and connecting rod is made by the rod iron of bending resistance shearing resistance, is divided into canned paragraph and glissile segment, forms axial sliding fit between connecting rod glissile segment and the sliding sleeve, but radially constraint mutually.Connecting rod canned paragraph and sliding sleeve external surface are established anchor rib respectively, and are embedded in the end that adjacent floating is put plate in advance.
After adopting connector, when train is floated plate when next floats the plate transition by last one, because connector has a very high coupling stiffness vertical, two relative displacements of floating between the plate are very little, the plate of having avoided floating misplaces to the crooked of rail 16 and shears the traveling comfort and the safety that have improved train.
Embodiment 7:
As Figure 18, shown in Figure 19, present embodiment has been showed the connector 12 of another structure, and the canned paragraph of the connecting rod 12a of this connector and sliding sleeve 12b are individually fixed in base 12c separately, and base connects with the adjacent plate difference bolt of floating.Compare with a last embodiment, this connector places on the plate of floating, and maintenance or replacing are convenient.
Embodiment 8:
Referring to Figure 20, Figure 21, present embodiment has been showed the floating ballast bed section joint with adjacent railway roadbed, adjacent railway roadbed is fixing railway roadbed, for the floating ballast bed and fixedly smooth transition between railway roadbed, adopt the spring vibration isolation device of equal rigidity, but it is, close in vertical direction and adjacent fixedly railway roadbed until floating ballast bed mean rigidity in unit length in the increasing gradually of the arranging density of vertical unit length.
When train sailed out of floating ballast bed section, its vertical stiffness was gradual change like this, was not sudden change, and the relative displacement of floating between plate and adjacent railway roadbed is very little, had avoided the crooked and shearing to rail 16, the traveling comfort and the safety that have improved train.
The floating ballast bed section another kind of processing mode with adjacent railway roadbed transition be that spring vibration isolation device isodensity is arranged, but the vertical stiffness of spring vibration isolation device gradually changes.The optional dish spring of the spring of spring vibration isolation device for this reason, varying number and superimposed mode by the dish spring can be combined into the spring vibration isolation device with different vertical stiffnesses easily.
Claims (14)
1, a kind of floating ballast bed, comprise float plate and spring vibration isolation device, the plate of floating flexibly is supported on the spring vibration isolation device, the spring vibration isolation device is made of spring and spring housing, spring places among the spring housing, the part surface at least that it is characterized in that spring is provided with damping-constraining, and perhaps spring is local at least embeds among the damping material.
2, according to claim 1 floating ballast bed, it is characterized in that among the local at least embedding solid of the spring damping material.
3, according to claim 1 floating ballast bed, it is characterized in that hermetically-sealed construction is set on the spring housing, the fluid damping material is set in the spring housing, the spring bottom is immersed in the fluid damping material.
4, according to claim 1 floating ballast bed, it is characterized in that the spring vibration isolation device is arranged in the reservation through hole of the plate of floating, on the inwall of through hole support stop is set, perhaps through hole is embedded with joint sheeve, support stop is fixed on the joint sheeve inwall again, and the plate of floating is supported on the spring vibration isolation device by support stop.
5, according to claim 4 floating ballast bed, it is characterized in that on reservation through-hole wall or branch sleeve inwall, the jacking block being set, and between spring vibration isolation device and support stop, pad is set, the central authorities of pad leave the jacking through hole.
6, according to claim 4 floating ballast bed, it is characterized in that between spring vibration isolation device and support stop, being provided with and can regulate the adjusting bolt and the adjusting base plate of spacing between the two.
7, according to claim 5 or 6 described floating ballast bed, it is characterized in that supporting on the opening of link stopper and jacking block and shape and the spring housing end face, pad or regulate the big or small compatible of base plate, and the overlapping that can misplace.
8, according to claim 1 floating ballast bed, the plate that it is characterized in that floating is tabular, frame shape or ladder shape, and the spring vibration isolation device is uniformly distributed in the plate both sides of floating, and the spring vibration isolation device is arranged on the below of the plate of floating, and is bearing on the outside bottom surface of the plate of floating.
9, according to claim 8 floating ballast bed, it is characterized in that its by polylith float plate vertically butt joint form, leave the flexible gap of heat expansion between plate and the plate, and connect by connector.
10, according to claim 9 floating ballast bed, it is characterized in that described connector comprises connecting rod and sliding sleeve, form axial sliding fit between them, radially constraint mutually, connecting rod and sliding sleeve are individually fixed on the adjacent plate of floating or are embedded in adjacent floating in advance and put in the plate.
11, according to claim 8 floating ballast bed, it is characterized in that the described plate of floating is made of the prefabricated daughter board of polylith, its end face is rough surface or is provided with concavo-convex cooperation that daughter board is filled and formed with damping material, elastomeric material or concrete with the gap between the daughter board and connects.
12, according to claim 8 floating ballast bed, it is characterized in that the spring vibration isolation device in the plate of floating adjacent with other railway roadbed, the identical but arranging density difference of its rigidity increases gradually or reduces to end direction density; Perhaps rigidity difference but arranging density is identical increases gradually or reduces to end direction rigidity.
13, according to claim 1 floating ballast bed, the upper and lower surface of its feature spring vibration isolation device is provided with the coupling arrangement that prevents its horizontal shift, and this coupling arrangement connects with float plate and basis respectively up and down, and coupling arrangement is bolt, perhaps concaveconvex structure.
14, according to claim 1 floating ballast bed, the plate that it is characterized in that floating is provided with damping element or constrained damping structure.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100354411A CN1297712C (en) | 2004-07-23 | 2004-07-23 | Floating road bed |
| KR1020077004247A KR100883571B1 (en) | 2004-07-23 | 2005-07-20 | Floating Slab Track Bed |
| CN2005800299900A CN101023218B (en) | 2004-07-23 | 2005-07-20 | Floating roadbed |
| BRPI0513626-1A BRPI0513626A (en) | 2004-07-23 | 2005-07-20 | a floating railroad slab |
| JP2007521773A JP4745338B2 (en) | 2004-07-23 | 2005-07-20 | Floating slave track bed |
| PCT/CN2005/001083 WO2006007791A1 (en) | 2004-07-23 | 2005-07-20 | A floating slab track bed |
| EP05772401A EP1783275A4 (en) | 2004-07-23 | 2005-07-20 | A floating slab track bed |
| HK07110929.8A HK1102695A1 (en) | 2004-07-23 | 2007-10-10 | A floating slab track bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100354411A CN1297712C (en) | 2004-07-23 | 2004-07-23 | Floating road bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1707026A CN1707026A (en) | 2005-12-14 |
| CN1297712C true CN1297712C (en) | 2007-01-31 |
Family
ID=35581119
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100354411A Expired - Lifetime CN1297712C (en) | 2004-07-23 | 2004-07-23 | Floating road bed |
| CN2005800299900A Active CN101023218B (en) | 2004-07-23 | 2005-07-20 | Floating roadbed |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800299900A Active CN101023218B (en) | 2004-07-23 | 2005-07-20 | Floating roadbed |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1783275A4 (en) |
| JP (1) | JP4745338B2 (en) |
| KR (1) | KR100883571B1 (en) |
| CN (2) | CN1297712C (en) |
| BR (1) | BRPI0513626A (en) |
| HK (1) | HK1102695A1 (en) |
| WO (1) | WO2006007791A1 (en) |
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| CN101545518B (en) * | 2008-03-29 | 2011-04-20 | 尹学军 | Vibration isolation device and application thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2006007791A1 (en) | 2006-01-26 |
| BRPI0513626A (en) | 2008-05-13 |
| JP2008507640A (en) | 2008-03-13 |
| KR100883571B1 (en) | 2009-02-17 |
| JP4745338B2 (en) | 2011-08-10 |
| EP1783275A4 (en) | 2011-03-23 |
| CN1707026A (en) | 2005-12-14 |
| HK1102695A1 (en) | 2007-11-30 |
| CN101023218A (en) | 2007-08-22 |
| KR20070039599A (en) | 2007-04-12 |
| CN101023218B (en) | 2010-07-21 |
| EP1783275A1 (en) | 2007-05-09 |
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