CN103485243B

CN103485243B - The installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed

Info

Publication number: CN103485243B
Application number: CN201310472975.XA
Authority: CN
Inventors: 白廷辉; 尹学军; 毕湘利; 刘加华; 张明; 孙军溪; 刘富; 范利辉; 张宝才; 孔祥斐; 王乾安; 王永国; 尚旭东
Original assignee: GERB (QINGDAO) VIBRATION CONTROL CO Ltd
Current assignee: GERB (QINGDAO) VIBRATION CONTROL CO Ltd
Priority date: 2013-10-11
Filing date: 2013-10-11
Publication date: 2016-01-06
Anticipated expiration: 2033-10-11
Also published as: CN103485243A

Abstract

The invention belongs to field of track traffic, especially relate to the installation jacking leveling method of floating plate in a kind of floating plate railway roadbed, be specially the installation jacking leveling method of prefabricated floating plate in a kind of floating plate railway roadbed.The method is simple to operate, engineering examination paving result shows, do not need in installation process repeatedly to heighten leveling to prefabricated floating plate, substantially can realize disposablely heightening leveling, fast very convenient, which overcome the technical bottleneck of existing method of operating, be conducive to improving speed of application further, meet the requirement of construction period, it greatly improves the applicability of steel spring floating slab road bed technology, market application foreground is very wide.

Description

The installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed

Technical field

The invention belongs to field of track traffic, especially relate to the installation jacking leveling method of floating plate in a kind of floating plate railway roadbed, be specially the installation jacking leveling method of prefabricated floating plate in a kind of floating plate railway roadbed.

Background technology

Vibration & noise is influence surface the most a kind of public hazards that people generally acknowledge, is also track traffic in recent years development one of a facing difficult problem urgently to be resolved hurrily.In the noise reduction technology of existing track traffic, practical application is the most successfully component livitation, typically floating plate road bed technique, its vibration isolation efficiency is high, stable work in work, become common recognition in the industry, the such as patent No. is built-in type floating plate ballast bed structure disclosed in the Chinese patent of ZL200410035441.1.But the construction period of existing floating plate railway roadbed is general longer, and standard floating plate length is 25m, and the speed of all carrying out the earliest constructing in tunnel can only realize average each working group and complete 5m every day; Then earthing, Shen, Shanghai Inland Steel and Qingdao every and solid company develops precast reinforced cage construction technology jointly, namely after the good reinforcing cage of the first colligation in ground, lifting enters the construction method of carrying out filling concrete in tunnel again, and the job schedule of each working group every day is brought up to about 30m.Because reinforcing cage size is larger, often need when transporting in tunnel to offer special passage on tunnel, very inconvenient, in addition, although reinforcing cage construction method significantly improves construction speed, but still the requirement of engineering construction duration can not be met well, many subway vibration isolation locations yield because the duration cannot meet and use floating plate railway roadbed vibration isolation technique, cause the hidden danger vibrated and disturb residents.For addressing this problem, Shen, Shanghai earthing Inland Steel and Qingdao every and the technician of solid company develops and a kind ofly applies the long novel floating plate ballast bed structure being no more than the floating plate of 8 meters of plate, concrete if application number is for described in the Chinese patent of 201220091895.0.This novel floating plate ballast bed structure, because floating plate plate is long shorter, can transport in tunnel easily, therefore floating plate can carry out prefabricated suitability for industrialized production on ground, so also referred to as prefabricated floating plate, to carry out assembling construction in this floating plate again handling to tunnel, greatly can improve speed of application, the quality of floating plate also more easily ensures.But the plate due to floating plate is long shorter, and effect is stuck up in turning over of producing when entering from plate body one end to prevent vehicle, except arranging except Elastic Isolator in plate body, is also provided with plate end isolation mounting between adjacent floating plate.For the sake of security, the vertical stiffness of single plate end isolation mounting is greater than the vertical stiffness of other the single Elastic Isolators arranged in floating plate usually, find in test, the difference of this vertical stiffness, influence each other, when causing floating plate to adopt traditional approach to carry out jacking and leveling, need repeatedly to heighten the design elevation requirement that leveling could meet railway roadbed, therefore have impact on the progress of whole construction to a certain extent.

How to solve the problem that prefabricated floating plate jacking leveling length consuming time in floating plate railway roadbed, speed of application are slow, become a difficult problem in the industry for this technology further genralrlization of restriction application.

Summary of the invention

The object of the invention is to overcome above-mentioned defect, the installation jacking leveling method of prefabricated floating plate in a kind of simple, quick, maneuverable floating plate railway roadbed is provided.

In floating plate railway roadbed of the present invention, the installation jacking leveling method of prefabricated floating plate is achieved in that when prefabricated floating plate is supported jointly by plate end isolation mounting and built-in Elastic Isolator, comprises the steps:

(1) the prefabricated floating plate identified according to ruling in railway roadbed basis and the plan-position of plate end isolation mounting, plate end isolation mounting is placed in precalculated position, utilize hoisting transportation equipment to be placed on plate end isolation mounting pre-processed prefabricated floating plate again, adjust the plan-position of prefabricated floating plate;

(2) using the either end of prefabricated floating plate as free end, then the other end of prefabricated floating plate is as adjustment end, utilize jack at prefabricated floating plate plate body longitudinal centre line place by the free end jack-up of prefabricated floating plate, until the free end of prefabricated floating plate and the plate end vibration isolator that arranges below it depart from completely, prefabricated floating plate enters the static determinacy state of three-point support, and the plate end vibration isolator that namely jack that arranged by its free end of prefabricated floating plate and adjustment end both sides are arranged supports jointly;

(3) actual height of prefabricated floating plate plate body upper surface relative to disjunction mark of laying a railway track of prefabricated floating plate adjustment end respective panels end isolation mounting position, both sides is measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, utilize this difference to deduct comprehensive compensative level amount again and be namely adjusted the thickness holding height adjusting cushion plate needed for each plate end isolation mounting of both sides;

(4) jack is let out carry, the free end of prefabricated floating plate is made to fall to being back on the plate end isolation mounting that arranges below it, the adjustment end jack-up of recycling jack at prefabricated floating plate plate body longitudinal centre line place by prefabricated floating plate, until the adjustment end of prefabricated floating plate and the plate end vibration isolator that arranges below it depart from completely, prefabricated floating plate enters the static determinacy state of three-point support;

(5) on each plate end isolation mounting of prefabricated floating plate adjustment end both sides setting, place the height adjusting cushion plate of respective thickness respectively;

(6) actual height of prefabricated floating plate plate body upper surface relative to disjunction mark of laying a railway track of respective panels end isolation mounting position, prefabricated floating plate free end both sides is measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, utilize this difference to deduct again thickness that namely comprehensive compensative level amount obtains height adjusting cushion plate needed for each plate end isolation mounting of free end both sides;

(7) jack is let out carry, make prefabricated floating plate adjust end to fall, utilize jack by the free end of prefabricated floating plate again jack-up, each plate end isolation mounting that prefabricated floating plate free end both sides are arranged is placed the height adjusting cushion plate of respective thickness respectively, then prefabricated floating plate free end is fallen again, complete the first jacking leveling of one piece of prefabricated floating plate;

(8) built-in Elastic Isolator is put in the joint sheeve be fixedly installed in prefabricated floating plate, in advance according to the gross mass of prefabricated floating plate, the quantity of plate end isolation mounting, the quantity of Elastic Isolator, the vertical stiffness of plate end isolation mounting and the vertical stiffness of Elastic Isolator, determine the single static determinacy load of theory that each Elastic Isolator is born, using this theoretical single static determinacy load value as adjustment load, utilize jack on Elastic Isolator, apply the adjustment load of identical numerical value, the thickness of pad is heightened needed for clearance height between Elastic Isolator upper surface and support stop soffit is, what Elastic Isolator arranged respective thickness heightens pad, complete the second time jacking leveling of this prefabricated floating plate,

(9) actual height of prefabricated floating plate plate body upper surface relative to disjunction mark of laying a railway track of prefabricated floating plate free end and adjustment end respective panels end isolation mounting position, both sides is measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, the height adjusting cushion plate gross thickness between prefabricated floating plate and correspondence position plate end isolation mounting is again adjusted according to height difference, until prefabricated floating plate height meets design requirement, complete the accurate jacking leveling of this prefabricated floating plate;

(10) repeat above-mentioned steps, complete the accurate jacking leveling of all prefabricated floating plates in ballast bed structure one by one, namely realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.

Wherein, comprehensive compensative level method for determination of amount is, using the weight of prefabricated floating plate as static load, calculate the average decrement had elastic component when prefabricated floating plate is only provided support by all plate end isolation mountings, calculate prefabricated floating plate again by the average decrement had elastic component when all plate end isolation mountings and built-in Elastic Isolator common support, comprehensive compensative level amount is the absolute value of the difference of secondary calculating averaging of income decrement.

In order to improve efficiency of construction further, when putting prefabricated floating plate in step (1), can according to step (1) described method, place in proper order and adjust the plan-position of polylith prefabricated floating plate, form at least one and workshop section is installed, again first jacking leveling, second time jacking leveling and accurately jacking leveling are implemented to each the block prefabricated floating plate installed in workshop section, thus realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.This form of construction work, is conducive to the continuity strengthening constructing operation, optimizes inter process flow process, and then effectively improve efficiency of construction.Its Specific construction mode of operation can be varied, such as, the one end of installing workshop section can be selected as initial, successively first jacking leveling, second time jacking leveling and accurately jacking leveling are implemented continuously to each block prefabricated floating plate in installation workshop section, thus realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed; Also the one end of installing workshop section can be selected as initial, successively to after in installation workshop section, all prefabricated floating plates implement first jacking leveling, successively second time jacking leveling is carried out to all prefabricated floating plates in installation workshop section again, and then successively accurate jacking leveling is carried out to all prefabricated floating plates in installation workshop section, thus realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed; After first jacking leveling and second time jacking leveling can also being implemented to all prefabricated floating plates in installation workshop section, prefabricated floating plate belonging to installation workshop section sets up rail, measure plate end isolation mounting corresponding position tread in each prefabricated floating plate relatively to lay a railway track the actual height of disjunction mark, contrast Track desigh elevation, on plate end isolation mounting, height adjusting cushion plate is increased and decreased accordingly according to comparing result, until complete the accurate jacking leveling of installing all prefabricated floating plates in workshop section, realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.In addition, when tread relatively lay a railway track the actual height of disjunction mark and the difference of Track desigh elevation be less than 2mm time, utilize railway rail pad to carry out leveling, no longer adjust the height adjusting cushion plate thickness on respective panels end vibration isolator.This operating type effectively can reduce jacking prefabricated floating plate and correct the number of times of prefabricated floating plate plan-position, thus reduces difficulty of construction, improves efficiency of construction.

For the situation arranging shared plate end isolation mounting between formula floating plate contiguous prefabricated in floating plate ballast bed structure, in first jacking leveling process, before measuring the actual height of prefabricated floating plate upper surface corresponding to common plate end isolation mounting place relative to disjunction mark of laying a railway track, to need adjacent two pieces of prefabricated floating plates to be placed in all in advance on this plate end isolation mounting and to adjust plan-position, then the non-adjacent end of two pieces of prefabricated floating plates is jack-uped at prefabricated floating plate plate body longitudinal centre line place respectively, make adjacent two pieces of prefabricated floating plates be in the static determinacy state of three-point support simultaneously, and the abutting end of plate end isolation mounting to two pieces of prefabricated floating plates shared between adjacent two pieces of prefabricated floating plates is remained valid bearing state, disjunction mark of relatively laying a railway track again is implemented to measure.In order to overcome the adverse effect that various early stage, construction error was brought, reduce and repeatedly adjust number of times, be in step (1), hoisting transportation equipment is utilized by pre-processed prefabricated floating plate to be placed in after on plate end isolation mounting, first confirming remains valid between each plate end isolation mounting and prefabricated floating plate supports, the plate end isolation mounting not realizing with prefabricated floating plate bottom surface fully contacting pre-sets height adjusting cushion plate, until all realize between all plate end isolation mountings and prefabricated floating plate effectively supporting, and then first jacking leveling is implemented to prefabricated floating plate, second time jacking leveling and accurately jacking Levelling operation.By these above-mentioned measures, plate end isolation mounting stressed closer to actual forced status during static load, therefore measurement result is more accurate, also directive significance is had more, determine that the thickness of required height adjusting cushion plate is more accurate accordingly and rationally can effectively reduce adjustment number of times, improve efficiency of construction.

In addition, in order to the adverse effect that the height error eliminating railway roadbed foundation construction is brought, in step (1), on railway roadbed basis before board for putting end isolation mounting, first each center, plate end isolation mounting plan-position that measuring, railway roadbed basis rules identifies is relative to the actual height of disjunction mark of laying a railway track, the design height on contrast railway roadbed basis, part lower than design height is recompensed by the height adjusting cushion plate increasing respective thickness on plate end vibration isolator, to eliminate the adverse effect that railway roadbed foundation construction error causes, and then utilize hoisting transportation equipment to be placed in by prefabricated floating plate on plate end isolation mounting and adjust horizontal level.It should be noted that, for the ease of utilizing height adjusting cushion plate to compensate adjustment, in the railway roadbed foundation construction process in early stage, the height tolerance on railway roadbed basis only arranges lower limit, namely railway roadbed basis only allows the design height less than or equal to standard, should higher than the design height of standard.

According to know-why of the present invention, also hanging device can be utilized to substitute jack along plate body longitudinal centre line place, the free end of prefabricated floating plate or adjustment end are sling, until the free end of prefabricated floating plate or adjustment end with its below the plate end vibration isolator that arranges depart from completely, prefabricated floating plate enters the static determinacy state of three-point support.In addition, when utilizing hanging device to operate, can implement as follows: utilize hanging device to substitute jack and to sling the free end of prefabricated floating plate, determine the thickness adjusting height adjusting cushion plate needed for each plate end isolation mounting of end both sides, fall free end, to sling again the adjustment end of prefabricated floating plate, determine the thickness of height adjusting cushion plate needed for each plate end isolation mounting of free end both sides, then hanging device is utilized also to be sling by the free end of prefabricated floating plate, prefabricated floating plate entirety is made to be in suspended state, each plate end isolation mounting that prefabricated floating plate free end and adjustment end both sides are arranged is placed the height adjusting cushion plate of respective thickness respectively, then prefabricated floating plate entirety is fallen, complete the first jacking leveling of one piece of prefabricated floating plate.It is pointed out that the horizontal level due to prefabricated floating plate entirety suspension rear plate body is easily moved, therefore after prefabricated floating plate entirety falls, the horizontal level of prefabricated floating plate should be reaffirmed.The advantage of this adjustment mode is, the height adjusting cushion plate on all plates end isolation mounting of prefabricated floating plate two ends can disposablely be dosed complete, can reduce the transport link of height adjusting cushion plate, strengthens the continuity of constructing operation.

In addition, it is to be noted, when utilizing jack pair Elastic Isolator to load in step (8), can take to utilize the Elastic Isolator arranged in jack pair prefabricated floating plate plate body to carry out one by one loading and arranging the mode of operation heightening pad; Also corresponding for each Elastic Isolator in prefabricated floating plate plate body a jack can be set, utilize compression pump to drive each Elastic Isolator in all jack pair prefabricated floating plates to apply respectively to adjust load simultaneously, then arrange on Elastic Isolator and heighten pad, this adjustment mode, the stressing conditions of each Elastic Isolator is closer to the duty of the best, precision is higher, better effects if, can significantly improve efficiency of construction.In general, the actual adjustment load that each Elastic Isolator of jack pair applies is 0.9 ~ 1.1 times of theoretical single static determinacy load value, this is because, for operating modes such as curved sections, Elastic Isolator stressed different that inside and outside track, both sides are arranged, so the adjustment load applied also can difference to some extent.

The present invention the form of Elastic Isolator that is suitable for can be varied, be specifically as follows steel spring vibration isolator, rubber shock absorber, rubber-metal composite vibration isolator or air cushion shock absorber etc.

The installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed of the present invention, simple to operate, engineering examination paving result shows, do not need in installation process repeatedly to heighten leveling to prefabricated floating plate, substantially can realize disposablely heightening leveling, fast very convenient, which overcome the technical bottleneck of existing method of operating, be conducive to improving speed of application further, meet the requirement of construction period, it greatly improves the applicability of steel spring floating slab road bed technology, market application foreground is very wide.

Accompanying drawing explanation

Fig. 1 is one of structural representation of floating plate railway roadbed.

Fig. 2 is the A-A sectional view in Fig. 1.

Fig. 3 be first jacking leveling before prefabricated floating plate and plate end isolation mounting coordinate schematic diagram.

Fig. 4 be in first jacking leveling process prefabricated floating plate and plate end isolation mounting and jack coordinate one of schematic diagram.

Fig. 5 is the B-B sectional view in Fig. 4.

Fig. 6 be through first jacking leveling prefabricated floating plate and plate end isolation mounting coordinate one of schematic diagram.

Fig. 7 be through second time jacking leveling prefabricated floating plate and plate end isolation mounting coordinate one of schematic diagram.

Fig. 8 is the structural representation two of floating plate railway roadbed.

Fig. 9 is the E-E sectional view in Fig. 8.

Figure 10 be in first jacking leveling process prefabricated floating plate and plate end isolation mounting and jack coordinate schematic diagram two.

Figure 11 is the F-F sectional view in Figure 10.

Figure 12 be through first jacking leveling prefabricated floating plate and plate end isolation mounting coordinate schematic diagram two.

Figure 13 be through second time jacking leveling prefabricated floating plate and plate end isolation mounting coordinate schematic diagram two.

Detailed description of the invention

Embodiment one

Below for block prefabricated floating plate every in floating plate railway roadbed by four plate end isolation mountings and four built-in Elastic Isolator common support, the operating process of the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed of the present invention is illustrated.Understand the inventive method for convenience, first the basic structure of involved floating plate railway roadbed is described.The typical structure of described floating plate railway roadbed as shown in Figures 1 and 2, for prefabricated floating plate 2, it is by four plate end isolation mountings 4 and four built-in Elastic Isolator 8 common support, depart from surface, basis 6, Elastic Isolator 8 is placed in the joint sheeve 5 that is fixedly installed in prefabricated floating plate 2, in addition, be provided with between support stop 10 in Elastic Isolator 8 end face and joint sheeve 5 and heighten pad 9, between plate end isolation mounting 4 and prefabricated floating plate 2, height adjusting cushion plate 7 is set, in order to ensure prefabricated floating plate smooth transition load in the course of the work, cooperative bearing, shear hinge 11 is also provided with between prefabricated floating plate, the each several part that shear hinge 11 is positioned on contiguous prefabricated formula floating plate carries out leveling by backing plate 12, align position each other.The track structures such as rail, fastener and sleeper are arranged on prefabricated floating plate, are in this case convenient to see clearly other structures, are not specifically illustrated by track structure in the drawings, hereby illustrate.

Below for prefabricated floating plate 2, illustrate the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed of the present invention shown in Fig. 1 and Fig. 2, specific operation process is as follows:

(1) the prefabricated floating plate 2 identified according to ruling in railway roadbed basis 6 and the plan-position of plate end isolation mounting 4, plate end isolation mounting 4 is placed in precalculated position, hoisting transportation equipment is utilized by pre-processed prefabricated floating plate 2 to be placed on plate end isolation mounting 4 again, adjust the plan-position of prefabricated floating plate 2, as shown in Figure 3;

(2) as shown in Figure 4 and Figure 5, using the either end of prefabricated floating plate 2 as free end C, then the other end of prefabricated floating plate is as adjustment end D, utilize the free end C jack-up of jack 30 at prefabricated floating plate 2 plate body longitudinal centre line place by prefabricated floating plate 2, until the free end C of prefabricated floating plate 2 and the plate end vibration isolator 4 that arranges below it depart from completely, prefabricated floating plate 2 enters the static determinacy state of three-point support, and the plate end vibration isolator 4 that namely jack 30 that arranged by its free end C of prefabricated floating plate 2 and adjustment end D both sides are arranged supports jointly;

(3) actual height of prefabricated floating plate plate body upper surface relative to disjunction mark (not shown) of laying a railway track that prefabricated floating plate 2 adjusts end respective panels end isolation mounting position, D both sides is measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, utilize this difference to deduct comprehensive compensative level amount again and be namely adjusted the thickness holding height adjusting cushion plate needed for each plate end isolation mounting of both sides;

(4) jack 30 is let out carry, the free end C of prefabricated floating plate 2 is made to fall to being back on the plate end isolation mounting 4 that arranges below it, the adjustment end jack-up of recycling jack at prefabricated floating plate plate body longitudinal centre line place by prefabricated floating plate, until the adjustment end of prefabricated floating plate and the plate end vibration isolator that arranges below it depart from completely, prefabricated floating plate enters the static determinacy state of three-point support;

(5) height adjusting cushion plate 7 each plate end isolation mounting 4 of D both sides setting being placed respectively respective thickness is held prefabricated floating plate 2 adjustment;

(6) actual height of prefabricated floating plate plate body upper surface relative to disjunction mark of laying a railway track of respective panels end isolation mounting position, prefabricated floating plate 2 free end C both sides is measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, utilize this difference to deduct again thickness that namely comprehensive compensative level amount obtains height adjusting cushion plate needed for free end C both sides each plate end isolation mounting 4;

(7) jack 30 is let out carry, make prefabricated floating plate 2 adjust end D to fall, utilize jack 30 by the free end C jack-up again of prefabricated floating plate 2, each plate end isolation mounting that prefabricated floating plate free end both sides are arranged is placed the height adjusting cushion plate 7 of respective thickness respectively, then prefabricated floating plate free end is fallen again, complete the first jacking leveling of prefabricated floating plate 2, as shown in Figure 6;

(8) built-in Elastic Isolator 8 is put in the joint sheeve 5 be fixedly installed in prefabricated floating plate 2, in advance according to the gross mass of prefabricated floating plate, the quantity of plate end isolation mounting, the quantity of Elastic Isolator, the vertical stiffness of plate end isolation mounting and the vertical stiffness of Elastic Isolator, determine the single static determinacy load of theory that each Elastic Isolator 8 is born, using this theoretical single static determinacy load value as adjustment load, utilize jack on Elastic Isolator, apply the adjustment load of identical numerical value, the thickness of pad is heightened needed for clearance height between Elastic Isolator upper surface and support stop soffit is, what Elastic Isolator arranged respective thickness heightens pad 9, complete the second time jacking leveling of prefabricated floating plate 2,

(9) actual height of prefabricated floating plate plate body upper surface relative to disjunction mark of laying a railway track of prefabricated floating plate 2 free end C and adjustment end respective panels end isolation mounting position, D both sides is measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, height adjusting cushion plate 7 gross thickness between prefabricated floating plate 2 and correspondence position plate end isolation mounting 4 is again adjusted according to height difference, until prefabricated floating plate 2 highly meets design requirement, complete the accurate jacking leveling of this prefabricated floating plate, its state as shown in Figure 7;

Wherein, comprehensive compensative level method for determination of amount is, using the weight of prefabricated floating plate 2 as static load, calculate the average decrement had elastic component when prefabricated floating plate 2 is only provided support by four plate end isolation mountings 4, calculate prefabricated floating plate 2 again by the average decrement had elastic component when four plate end isolation mountings 4 and four Elastic Isolator 8 common support, comprehensive compensative level amount is the absolute value of the difference of secondary calculating averaging of income decrement.The specific algorithm of comprehensive compensative level amount and adjustment load can refer to following formula, for convenience of description, first following parameters is defined as follows:

M---the gross mass of prefabricated floating plate;

G---acceleration of gravity;

N ₁---every block prefabricated floating plate correspondence arranges the total quantity of plate end isolation mounting;

N ₂---every block prefabricated floating plate correspondence arranges the total quantity of Elastic Isolator;

K ₁---the vertical global stiffness of single plate end isolation mounting;

K ₂---the vertical global stiffness of single Elastic Isolator;

The design elevation value of H---railway roadbed;

H---measure the actual height of plate body upper surface relative to disjunction mark of laying a railway track of the respective panels end isolation mounting position, end of prefabricated floating plate;

H ₁---the weight of prefabricated floating plate as dead weight on all plate end isolation mountings and Elastic Isolator time, the average decrement of the theory had elastic component obtained;

H _x---when the weight of prefabricated floating plate only acts on all plate end isolation mountings as static load, the average decrement of the theory had elastic component obtained;

S ₁---the thickness of height adjusting cushion plate needed for plate end isolation mounting;

T---comprehensive compensative level amount;

The single static determinacy load of theory that F---Elastic Isolator is born, namely adjusts load.

Above-mentioned parameter definition is applicable to all embodiments of the present invention, in this special instruction.According to the definition of above-mentioned parameter and the concrete technical scheme of this example, following formula can be derived:

H ₁=Mg/（n ₁*K ₁+n ₂*K ₂）①

H ₂=Mg/（n ₁*K ₁）②

t=H ₂-H ₁③

S ₁=（H-h）-t④

F=K ₂*H ₁⑤

Due to above-mentioned parameter or can obtain in the design stage, or can draw by instrument measurements such as level gauges at the scene, all can obtain numerical value accurately, therefore by formula 1., formula 2., formula 3., formula 4. with formula 5., just can draw adjustment load required on the thickness of required height adjusting cushion plate 7 on plate end isolation mounting 4 in step (3) and step (6) and step (8) Elastic vibration isolator 8 very soon, and then the jacking leveling to prefabricated floating plate can be realized fast.In practical operation, can by the Microsoft Excel in computer, setup algorithm formula, inputs in advance by data with existing, after being listed in by data measured, operates more simple and efficient after in-site measurement again.Above-mentioned formula is applicable to all embodiments of the present invention, and no longer repeated description, illustrates in the lump at this.

This example is only supported for example with block prefabricated floating plate every in floating plate railway roadbed by four plate end isolation mountings and four internal elastic vibration isolators simultaneously and is described, during practical application, the difference long according to plate, two, six, eight even more Elastic Isolators also can be set in prefabricated floating plate, certainly, the quantity of plate end isolation mounting also can change to some extent, can be applicable to the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed of the present invention.When plate end isolation mounting or/and when the quantity of Elastic Isolator changes, only corresponding comprehensive compensative level amount need be calculated with reference to above-mentioned comprehensive compensative level method for determination of amount.In engineer applied, for saving time, can after floating plate railway roadbed have designed, according to plate end isolation mounting and the Elastic Isolator configuration of each block prefabricated floating plate, precompute the comprehensive compensative level amount that each plate end isolation mounting is corresponding, contrast corresponding prefabricated floating plate at the scene and directly apply.

After realizing the installation leveling of prefabricated floating plate in floating plate railway roadbed, then assemble the track structures such as shear hinge, rail, fastener and sleeper on prefabricated floating plate, form complete floating plate ballast bed structure as depicted in figs. 1 and 2.Certainly different according to operating habit, also the elements such as rail, fastener, sleeper or shear hinge can be assembled in advance on prefabricated floating plate, but before unrealized installation leveling finally, the retaining element such as shear hinge, fastener must not be locked, in order to avoid change the normal allocation of prefabricated floating plate static load on flexible member, cause measure error, levelling effect is installed in impact.

In addition, the inventive method is in embody rule process, also hanging device can be utilized to substitute jack along plate body longitudinal centre line place, the free end of prefabricated floating plate or adjustment end are sling, until the free end of prefabricated floating plate or adjustment end with its below the plate end vibration isolator that arranges depart from completely, prefabricated floating plate enters the static determinacy state of three-point support.Due to prefabricated floating plate utilize hanging device to sling along the two ends of plate body longitudinal direction simultaneously time, prefabricated floating plate entirety is in suspended state still can keep stable, therefore when first jacking leveling, can also to operate as follows: utilize hanging device to substitute jack and to sling the free end of prefabricated floating plate, determine the thickness adjusting height adjusting cushion plate needed for each plate end isolation mounting of end both sides, fall free end, to sling again the adjustment end of prefabricated floating plate, determine the thickness of height adjusting cushion plate needed for each plate end isolation mounting of free end both sides, then hanging device is utilized also to be sling by the free end of prefabricated floating plate, prefabricated floating plate entirety is made to be in suspended state, each plate end isolation mounting that prefabricated floating plate free end and adjustment end both sides are arranged is placed the height adjusting cushion plate of respective thickness respectively, then prefabricated floating plate entirety is fallen, complete the first jacking leveling of one piece of prefabricated floating plate.It is pointed out that the horizontal level due to prefabricated floating plate entirety suspension rear plate body may be moved, therefore after prefabricated floating plate entirety falls, the horizontal level of prefabricated floating plate should be reaffirmed.The advantage of this adjustment mode is, the height adjusting cushion plate on all plates end isolation mounting of prefabricated floating plate two ends can disposablely be dosed complete, can reduce the transport link of height adjusting cushion plate, strengthens the continuity of constructing operation.This application process also goes in other embodiments of the invention, all among the protection domain of application claims.

The installation leveling method of prefabricated floating plate in floating plate railway roadbed of the present invention, simple to operate, engineering examination paving result shows, does not need repeatedly to heighten leveling to prefabricated floating plate, substantially can realize disposablely heightening leveling in installation process, fast very convenient, which overcome the technical bottleneck of existing method of operating, be conducive to improving speed of application further, meet the requirement of construction period, it greatly improves the applicability of steel spring floating slab road bed technology, market application foreground is very wide.

Embodiment two

Still for floating plate railway roadbed described in embodiment one, every block prefabricated floating plate is by four plate end isolation mountings 4 and four built-in Elastic Isolator 8 common support, different from embodiment one, in this routine described floating plate railway roadbed of the present invention prefabricated floating plate installation jacking leveling method in, when putting prefabricated floating plate in step (1), according to step (1) described method, place in proper order and adjust the plan-position of polylith prefabricated floating plate, form at least one and workshop section is installed, again first jacking leveling is implemented to each the block prefabricated floating plate installed in workshop section, second time jacking leveling and accurately jacking leveling, thus realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.

The installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed of the present invention described in this example, the first jacking leveling of prefabricated floating plate, second time jacking leveling and accurately jacking Levelling operation method is identical with the method described in embodiment one, in this no longer repeated description.

Compared with embodiment one, the installation jacking leveling method of prefabricated floating plate in the floating plate railway roadbed described in this example, is conducive to the continuity strengthening constructing operation, optimizes inter process flow process, and then effectively improve efficiency of construction.

Embodiment three

Still for the floating plate railway roadbed of structure described in embodiment one, based on the know-why of embodiment one and embodiment two, in floating plate railway roadbed of the present invention, the installation jacking leveling method of prefabricated floating plate can also do following differentiation, and its specific operation process is as follows:

(1) the prefabricated floating plate identified according to ruling in railway roadbed basis and the plan-position of plate end isolation mounting, plate end isolation mounting is placed in precalculated position, hoisting transportation equipment is utilized by pre-processed prefabricated floating plate to be placed on plate end isolation mounting again, adjust the plan-position of prefabricated floating plate, according to the method described above, place in proper order and adjust the plan-position of polylith prefabricated floating plate, forming at least one and workshop section is installed;

(2) select the one end of installing workshop section as initial, using corresponding for initiating terminal first piece of prefabricated floating plate along the either end of plate body longitudinal direction as free end, then this prefabricated floating plate is held along the other end of plate body longitudinal direction as adjustment, utilize the free end jack-up of jack at floating plate plate body longitudinal centre line place by prefabricated floating plate, until the free end of prefabricated floating plate and the plate end vibration isolator that arranges below it depart from completely, prefabricated floating plate enters the static determinacy state of three-point support, namely the plate end vibration isolator that the jack that arranged by its free end of prefabricated floating plate and adjustment end both sides are arranged supports jointly,

(8) according to the first jacking leveling step of above-mentioned prefabricated floating plate, the first jacking leveling of installing all prefabricated floating plates in workshop section is completed successively;

(9) built-in Elastic Isolator is put in the joint sheeve be fixedly installed in installation workshop section's initiating terminal first piece of prefabricated floating plate, in advance according to the gross mass of prefabricated floating plate, the quantity of plate end isolation mounting, the quantity of Elastic Isolator, the vertical stiffness of plate end isolation mounting and the vertical stiffness of Elastic Isolator, determine the single static determinacy load of theory that each Elastic Isolator is born, using this theoretical single static determinacy load value as adjustment load, utilize jack on Elastic Isolator, apply the adjustment load of identical numerical value, the thickness of pad is heightened needed for clearance height between Elastic Isolator upper surface and support stop soffit is, what Elastic Isolator arranged respective thickness heightens pad, complete the second time jacking leveling of this prefabricated floating plate,

(10) according to the second time jacking leveling step of above-mentioned prefabricated floating plate, the second time jacking leveling of installing all prefabricated floating plates in workshop section is completed successively;

(11) actual height of prefabricated floating plate plate body upper surface relative to disjunction mark of laying a railway track of installing workshop section's initiating terminal first piece of prefabricated floating plate free end and adjusting end respective panels end isolation mounting position, both sides is measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, the height adjusting cushion plate gross thickness between prefabricated floating plate and correspondence position plate end isolation mounting is again adjusted according to height difference, until prefabricated floating plate height meets design requirement, complete the accurate jacking leveling of this prefabricated floating plate;

(12) according to the accurate jacking leveling step of above-mentioned prefabricated floating plate, the accurate jacking leveling of installing all prefabricated floating plates in workshop section is completed one by one;

(13) repeat above-mentioned steps, complete the first jacking leveling of prefabricated floating plate in all installation workshop sections in ballast bed structure, second time jacking leveling and accurately jacking leveling, namely realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.

The installation leveling method of prefabricated floating plate in floating plate railway roadbed described in this example, the continuity of constructing operation is better, is conducive to optimizing inter process flow process, and then effectively improves efficiency of construction.

Embodiment four

Compared with embodiment three, in this routine described floating plate railway roadbed of the present invention, the kind of the difference of the installation jacking leveling method of prefabricated floating plate is, according to step (1) in embodiment three to step (10) described method, after completing the second time jacking leveling of installing all prefabricated floating plates in workshop section successively, operate as follows again: on prefabricated floating plate belonging to installation workshop section, set up rail, measure plate end isolation mounting corresponding position tread in prefabricated floating plate relatively to lay a railway track the actual height of disjunction mark, contrast Track desigh elevation, on plate end isolation mounting, height adjusting cushion plate is increased and decreased accordingly according to comparing result, complete the accurate jacking leveling of one piece of prefabricated floating plate, according to the method for operating of above-mentioned accurate jacking leveling, complete the accurate jacking leveling of installing all prefabricated floating plates in workshop section successively, realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.

Method described in this example, while the installation jacking leveling realizing prefabricated floating plate in floating plate railway roadbed, also achieves the adjustment of rising Rail, decreases adjustment operation, improve efficiency of construction.

It is to be noted especially, as a kind of existing conventional application mode, flexible railway rail pad is provided with between rail and fastener, in accurate jacking leveling process, when the tread recorded relatively lay a railway track the actual height of disjunction mark and the difference of Track desigh elevation be less than 2mm time, also the thickness controlling railway rail pad can be utilized to carry out leveling, no longer adjust the height adjusting cushion plate thickness on respective panels end isolation mounting, this operating type effectively can reduce jacking prefabricated floating plate and correct the number of times of prefabricated floating plate plan-position, thus reduction difficulty of construction, improve efficiency of construction, also among the protection domain of application claims.

Embodiment five

Typical floating plate ballast bed structure as shown in Figure 8, Figure 9, be with the difference of floating plate ballast bed structure shown in Fig. 1 and Fig. 2 in embodiment one, in floating plate ballast bed structure, shared plate end isolation mounting is set between contiguous prefabricated formula floating plate, wherein plate end isolation mounting 25 carries the abutting end of prefabricated floating plate 21 and prefabricated floating plate 22 simultaneously, plate end isolation mounting 26 carries the abutting end of prefabricated floating plate 22 and prefabricated floating plate 23 simultaneously, and plate end isolation mounting 27 carries the abutting end of prefabricated floating plate 23 and prefabricated floating plate 24 simultaneously.It is pointed out that in actual applications, plate end isolation mounting 25,26 and 27 also may be identical at this differentiation plate end isolation mounting 25, plate end isolation mounting 26, plate end isolation mounting 27 only for convenience of description.

Based on know-why of the present invention, for the situation arranging shared plate end isolation mounting between formula floating plate contiguous prefabricated in floating plate ballast bed structure, implement in first jacking leveling process, before measuring the actual height of prefabricated floating plate upper surface corresponding to common plate end isolation mounting place relative to disjunction mark of laying a railway track, to need adjacent two pieces of prefabricated floating plates to be placed in all in advance on common plate end isolation mounting and to adjust plan-position, and the plate end isolation mounting shared between adjacent two pieces of prefabricated floating plates all to be remained valid bearing state to the abutting end of two pieces of prefabricated floating plates, disjunction mark of relatively laying a railway track again is implemented to measure.For prefabricated floating plate 22, the installation jacking leveling method of prefabricated floating plate in this routine described floating plate railway roadbed is specifically described below:

(1) the prefabricated floating plate identified according to ruling in railway roadbed basis 6 and the plan-position of plate end isolation mounting, to major general's prefabricated floating plate 21, the plate end isolation mounting of 22 and 23 correspondences is placed in precalculated position respectively, again by pre-processed prefabricated floating plate 21, 22 and 23 utilize hoisting transportation equipment to be placed on plate end isolation mounting respectively, adjust prefabricated floating plate 21, the plan-position of 22 and 23, wherein plate end isolation mounting 25 carries the abutting end of prefabricated floating plate 21 and prefabricated floating plate 2 simultaneously, plate end isolation mounting 26 carries the abutting end of prefabricated floating plate 22 and prefabricated floating plate 23 simultaneously,

(2) one end coordinated using prefabricated floating plate 22 and prefabricated floating plate 23 with plate end isolation mounting 26 is held as adjusting, one end that then prefabricated floating plate 22 coordinates with plate end isolation mounting 25 is free end, one end that prefabricated floating plate 23 coordinates with plate end isolation mounting 27 is free end, utilize jack 30 respectively at prefabricated floating plate 22 and prefabricated floating plate 23 plate body longitudinal centre line place by the free end jack-up of prefabricated floating plate 22 and prefabricated floating plate 23, until the free end of prefabricated floating plate 22 and the plate end vibration isolator 25 that arranges below it depart from completely, the free end of prefabricated floating plate 23 and the plate end vibration isolator 27 arranged below it depart from completely, prefabricated floating plate 22 and prefabricated floating plate 23 enter the static determinacy state of three-point support simultaneously, namely the plate end vibration isolator 26 that the jack 30 that arranged by its free end of prefabricated floating plate 22 and adjustment end both sides are arranged supports jointly, the jack 30 that prefabricated floating plate 23 is arranged by its free end and the plate end vibration isolator 26 that adjustment end both sides are arranged support jointly, specifically as shown in Figure 10 and Figure 11,

(3) actual height of plate body upper surface relative to disjunction mark of laying a railway track of corresponding each plate end isolation mounting 26 position of adjustment end of prefabricated floating plate 22 and 23 is measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, be adjusted the thickness of height adjusting cushion plate needed for end both sides each plate end isolation mounting 26;

(4) jack 30 is let out carry, the free end of prefabricated floating plate 22 and 23 is made to fall to being back on the plate end isolation mounting that arranges below it respectively, the adjustment end jack-up of recycling jack 30 at prefabricated floating plate plate body longitudinal centre line place by prefabricated floating plate 22 and 23, until the adjustment end of prefabricated floating plate 22 and 23 respectively with its below the plate end vibration isolator that arranges depart from completely, prefabricated floating plate 22 and 23 all enters the static determinacy state of three-point support;

(5) each plate end isolation mounting 26 arranged in the adjustment end both sides of prefabricated floating plate 22 and 23 is respectively placed respectively the height adjusting cushion plate 7 of respective thickness, complete the first jacking leveling adjusting end for prefabricated floating plate 22, it is to be noted, also complete the first jacking leveling that prefabricated floating plate 23 adjusts end, as shown in figure 12 simultaneously;

(6) according to the method described above, each plate end isolation mounting 25 that prefabricated floating plate 21 and 22 abutting end both sides are arranged also is placed the height adjusting cushion plate 7 of suitable thickness respectively, complete the first jacking leveling for prefabricated floating plate 22 free end, it is pointed out that the first jacking leveling also completing prefabricated floating plate 21 simultaneously and coordinate one end with plate end isolation mounting 25;

(7) jack pressure release, drops on prefabricated floating plate 22 and has set up on the plate end isolation mounting 25 and 26 of height adjusting cushion plate 7, realizes the first jacking leveling to prefabricated floating plate 22, specifically as shown in figure 12;

(8) built-in Elastic Isolator 8 is put into respectively in four joint sheeves 5 be fixedly installed in prefabricated floating plate 22, according to the gross mass of prefabricated floating plate 22, the quantity of plate end isolation mounting 25 and 26, the quantity of Elastic Isolator 8, the vertical stiffness of plate end isolation mounting 25 and 26, the vertical stiffness of Elastic Isolator 8, pre-determine the single static determinacy load of theory that each Elastic Isolator 8 is born, using this theoretical single static determinacy load value as adjustment load, utilize hydraulic pump drive jack on Elastic Isolator 8, apply the adjustment load of identical numerical value one by one, Elastic Isolator 8 is compressed, the thickness of pad 9 is heightened needed for clearance height in Elastic Isolator 8 upper surface and joint sheeve 5 between support stop 10 soffit is, what Elastic Isolator 8 arranged respective thickness heightens pad 9, utilize and heighten pad 9 and occupy gap in Elastic Isolator 8 upper surface and joint sheeve 5 between support stop 10 soffit, complete the second time jacking leveling of this prefabricated floating plate 22, concrete state as shown in figure 13,

(9) actual height of plate body upper surface relative to disjunction mark of laying a railway track of respective panels end isolation mounting 25 and 26 position, prefabricated floating plate 22 end is again measured respectively, the design elevation of contrast railway roadbed, calculate difference between the two, the height adjusting cushion plate gross thickness between prefabricated floating plate and correspondence position plate end isolation mounting is again adjusted according to gained height difference, until the height of prefabricated floating plate 22 meets design requirement, complete the accurate jacking leveling of this prefabricated floating plate;

(10) according to the method described above, what complete other all prefabricated floating plates in prefabricated floating plate 21, prefabricated floating plate 23 and ballast bed structure one by one puts in place, first jacking leveling, second time jacking leveling and accurately jacking leveling, namely realizes the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.

It should be noted that, at present in engineer applied, support the plate end isolation mounting of adjacent two pieces of prefabricated floating plates simultaneously, its support force provided for each block prefabricated floating plate is approximately uniform, therefore can be similar to and think that the vertical stiffness contribution of the corresponding every block prefabricated floating plate of each shared plate end isolation mounting is 1/2nd of the vertical global stiffness of plate end isolation mounting, apply accordingly when calculating comprehensive compensative level amount and adjustment load.In addition, at the position that floating plate railway roadbed is connected with solid concrete roabed, the prefabricated floating plate adjacent with solid concrete roabed one end adjacent with solid concrete roabed can arrange independently plate end isolation mounting, when carrying out installation leveling to this block prefabricated floating plate, by this routine described method and methods combining use described in can be implemented, there iing the method for common plate end isolation mounting side described in this example to carry out installation leveling, utilizing the method described in embodiment one to carry out installation leveling using one end of independent plate end isolation mounting.

In method described in this example, the prefabricated floating plate why requirement is provided with common plate end isolation mounting is implemented in first jacking leveling process, before measuring the actual height of prefabricated floating plate upper surface corresponding to common plate end isolation mounting place relative to disjunction mark of laying a railway track, to need adjacent two pieces of prefabricated floating plates to be placed in all in advance on plate end isolation mounting and to adjust plan-position, and the plate end isolation mounting shared between adjacent two pieces of prefabricated floating plates all to be remained valid bearing state to the abutting end of two pieces of prefabricated floating plates, mainly want by these above-mentioned measures, make the stressed closer to actual forced status during static load of plate end isolation mounting, therefore measurement result is more accurate, also directive significance is had more, determine that the thickness of required height adjusting cushion plate is more accurate rationally accordingly, can effectively reduce adjustment number of times, improve efficiency of construction.

Certainly; according to the know-why of embodiment three; in installation jacking leveling method described in this example; at least one also can be set workshop section is installed; be initial to install the either end of workshop section again; successively first jacking leveling is implemented to all prefabricated floating plates installed in workshop section; and then implement second time jacking leveling successively; finally all prefabricated floating plates installed in workshop section implement accurate jacking leveling successively again; realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed; also same effect can be realized, all in the protection domain of application claims.

In addition be noted that, due in the method described in this example, while installation leveling prefabricated floating plate 22, the abutting end of prefabricated floating plate 21 and prefabricated floating plate 23 and prefabricated floating plate 22 is synchronously achieved first jacking leveling respectively, therefore follow-up in the adjustment process of prefabricated floating plate 21 and prefabricated floating plate 23, the abutting end of itself and prefabricated floating plate 2 only needs to carry out accurate jacking leveling.

Embodiment six

In this routine described floating plate railway roadbed, described in the installation jacking leveling method of prefabricated floating plate and embodiment five, the difference of method is: in step (1), hoisting transportation equipment is utilized by pre-processed prefabricated floating plate to be placed in after on plate end isolation mounting, first confirming remains valid between each plate end isolation mounting and prefabricated floating plate supports, the plate end isolation mounting not realizing with prefabricated floating plate bottom surface fully contacting pre-sets height adjusting cushion plate, until all realize between all plate end isolation mountings and prefabricated floating plate effectively supporting, and then according to the method described in embodiment five, first jacking leveling is implemented to prefabricated floating plate, first time jacking leveling and accurately jacking Levelling operation, no longer repeated description is carried out at this.

Method described in this example, perfect further to institute's recording method in embodiment five, because railway roadbed basis exists the reasons such as construction error, when adjacent two pieces of prefabricated floating plates are placed on shared plate end isolation mounting, the situation that the plate end isolation mounting of respective location does not contact completely with prefabricated floating plate may be there is, thus the accuracy of follow-up measurement is impacted, by the measure described in this example, can effectively eliminate this hidden danger, therefore measurement result is more accurate, also directive significance is had more, determine that the thickness of required height adjusting cushion plate is more accurate rationally accordingly, can effectively reduce adjustment number of times, improve efficiency of construction.

Embodiment seven

In order to the adverse effect that the height error eliminating railway roadbed foundation construction is brought, compared with method described in embodiment five, in floating plate railway roadbed of the present invention, the installation jacking leveling method of prefabricated floating plate can also do following improvement:

In step (1), on railway roadbed basis before board for putting end isolation mounting, first each center, plate end isolation mounting plan-position that measuring, railway roadbed basis rules identifies is relative to the actual height of disjunction mark of laying a railway track, the design height on contrast railway roadbed basis, calculated height difference, then board for putting end isolation mounting, part lower than design height is recompensed by the height adjusting cushion plate increasing respective thickness on plate end isolation mounting, to eliminate the adverse effect that railway roadbed foundation construction error causes, and then utilize hoisting transportation equipment to be placed in by prefabricated floating plate on plate end isolation mounting and adjust plan-position, later step is identical with the description in embodiment five, no longer repeat at this.

It should be noted that, for the ease of utilizing height adjusting cushion plate to compensate adjustment, in the railway roadbed foundation construction process in early stage, the height tolerance on railway roadbed basis only arranges lower limit, namely railway roadbed basis only allows the design height less than or equal to standard, should higher than the design height of standard.

Embodiment eight

The installation leveling method of prefabricated floating plate in this routine described floating plate railway roadbed of the present invention, be with the difference of method described in embodiment five, when utilizing jack pair Elastic Isolator to load in step (8), for each Elastic Isolator in prefabricated floating plate plate body corresponding a jack is set, utilize compression pump to drive each Elastic Isolator in all jack pair prefabricated floating plates to apply respectively to adjust load simultaneously, then arrange on Elastic Isolator and heighten pad, utilize and heighten pad and occupy gap in Elastic Isolator upper surface and joint sheeve between support stop soffit, complete the second time jacking leveling of this prefabricated floating plate.All the other methods of operating are identical with described in embodiment five, no longer repeat at this.

Installation leveling method described in this example, the all Elastic Isolators utilizing jack to make to arrange in prefabricated floating plate are simultaneously stressed, the stressing conditions of each Elastic Isolator is closer to the static load duty of reality, its Adjustment precision is higher, better effects if, be conducive to minimizing to repeat to adjust number of times, significantly improve efficiency of construction.

Know-why of the present invention is equally also suitable for applying in other embodiments of the invention; and; based on know-why of the present invention; also all Elastic Isolators arranged in prefabricated floating plate can be divided into some groups; and then in units of group; utilize jack pair each Elastic Isolator often in group to load simultaneously and arrange and heighten pad; until complete the second time jacking leveling of prefabricated floating plate; these technical schemes are all the simple extensions of the technology of the present invention principle, all in the protection domain of application claims.It should be noted that in addition, in practicing, the actual adjustment load that each Elastic Isolator of jack pair applies is 0.9 ~ 1.1 times of theoretical single static determinacy load value, this is because, for operating modes such as curved sections, Elastic Isolator stressed different that inside and outside track, both sides are arranged, so the adjustment load applied also can difference to some extent.This point is applicable to other embodiments of the present invention too.

Be presented above the part exemplary embodiments of the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed of the present invention; object is the convenient method understanding the present invention better; it should not be considered as limitation of the present invention; technical scheme wherein in each embodiment also can cross-reference; as long as based on know-why of the present invention, all among the protection domain of application claims.

Claims

1. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed, is characterized in that when prefabricated floating plate is supported jointly by plate end isolation mounting and built-in Elastic Isolator, and it is installed jacking leveling method and comprises the steps:

(2) using the either end of prefabricated floating plate as free end, then the other end of prefabricated floating plate is as adjustment end, utilize jack at prefabricated floating plate plate body longitudinal centre line place by the free end jack-up of prefabricated floating plate, until the free end of prefabricated floating plate and the plate end isolation mounting that arranges below it depart from completely, prefabricated floating plate enters the static determinacy state of three-point support, and the plate end isolation mounting that namely jack that arranged by its free end of prefabricated floating plate and adjustment end both sides are arranged supports jointly;

(4) jack is let out carry, the free end of prefabricated floating plate is made to fall to being back on the plate end isolation mounting that arranges below it, the adjustment end jack-up of recycling jack at prefabricated floating plate plate body longitudinal centre line place by prefabricated floating plate, until the adjustment end of prefabricated floating plate and the plate end isolation mounting that arranges below it depart from completely, prefabricated floating plate enters the static determinacy state of three-point support;

(10) repeat above-mentioned steps, complete the accurate jacking leveling of all prefabricated floating plates in ballast bed structure one by one, namely realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed;

Comprehensive compensative level method for determination of amount is, using the weight of prefabricated floating plate as static load, calculate the average decrement had elastic component when prefabricated floating plate is only provided support by all plate end isolation mountings, calculate prefabricated floating plate again by the average decrement had elastic component when all plate end isolation mountings and built-in Elastic Isolator common support, comprehensive compensative level amount is the absolute value of the difference of secondary calculating averaging of income decrement.

2. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 1, it is characterized in that according to step (1) described method, place in proper order and adjust the plan-position of polylith prefabricated floating plate, form at least one and workshop section is installed, again first jacking leveling, second time jacking leveling and accurately jacking leveling are implemented to each the block prefabricated floating plate installed in workshop section, thus realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.

3. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 2, it is characterized in that selecting the one end of installing workshop section as initial, successively to after in installation workshop section, all prefabricated floating plates implement first jacking leveling, successively second time jacking leveling is carried out to all prefabricated floating plates in installation workshop section again, and then successively accurate jacking leveling is carried out to all prefabricated floating plates in installation workshop section, thus realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.

4. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 3, after it is characterized in that first jacking leveling and second time jacking leveling are implemented to all prefabricated floating plates in installation workshop section, prefabricated floating plate belonging to installation workshop section sets up rail, measure plate end isolation mounting corresponding position tread in each prefabricated floating plate relatively to lay a railway track the actual height of disjunction mark, contrast Track desigh elevation, on plate end isolation mounting, height adjusting cushion plate is increased and decreased accordingly according to comparing result, until complete the accurate jacking leveling of installing all prefabricated floating plates in workshop section, realize the installation jacking leveling of prefabricated floating plate in floating plate railway roadbed.

5. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 4, it is characterized in that when tread relatively lay a railway track the actual height of disjunction mark and the difference of Track desigh elevation be less than 2mm time, utilize railway rail pad to carry out leveling, no longer adjust the height adjusting cushion plate thickness on respective panels end isolation mounting.

6. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 1 or 2, when it is characterized in that arranging shared plate end isolation mounting when between contiguous prefabricated formula floating plate, before measuring the actual height of prefabricated floating plate upper surface corresponding to shared plate end isolation mounting place relative to disjunction mark of laying a railway track, to need adjacent two pieces of prefabricated floating plates to be placed in all in advance on plate end isolation mounting and to adjust plan-position, then the non-adjacent end of two pieces of prefabricated floating plates is jack-uped at prefabricated floating plate plate body longitudinal centre line place respectively, make adjacent two pieces of prefabricated floating plates be in the static determinacy state of three-point support simultaneously, and the abutting end of plate end isolation mounting to two pieces of prefabricated floating plates shared between adjacent two pieces of prefabricated floating plates is remained valid bearing state, disjunction mark of relatively laying a railway track again is implemented to measure.

7. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 1 or 2, it is characterized in that in step (1), hoisting transportation equipment is utilized by pre-processed prefabricated floating plate to be placed in after on plate end isolation mounting, first confirming remains valid between each plate end isolation mounting and prefabricated floating plate supports, the plate end isolation mounting not realizing with prefabricated floating plate bottom surface fully contacting pre-sets height adjusting cushion plate, until all realize between all plate end isolation mountings and prefabricated floating plate effectively supporting, and then first jacking leveling is implemented to prefabricated floating plate, second time jacking leveling and accurately jacking Levelling operation.

8. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 1 or 2, it is characterized in that in step (1), on railway roadbed basis before board for putting end isolation mounting, first each center, plate end isolation mounting plan-position that measuring, railway roadbed basis rules identifies is relative to the actual height of disjunction mark of laying a railway track, the design height on contrast railway roadbed basis, part lower than design height is recompensed by the height adjusting cushion plate increasing respective thickness on plate end isolation mounting, to eliminate the adverse effect that railway roadbed foundation construction error causes, and then utilize hoisting transportation equipment to be placed in by prefabricated floating plate on plate end isolation mounting, adjust the horizontal level of the short floating plate of prefabricated.

9. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 1, it is characterized in that utilizing hoisting transportation equipment replacement jack the free end of prefabricated floating plate or adjustment end to be sling along plate body longitudinal centre line place, until the free end of prefabricated floating plate or adjustment end with its below the plate end isolation mounting that arranges depart from completely, prefabricated floating plate enters the static determinacy state of three-point support.

10. the installation jacking leveling method of prefabricated floating plate in floating plate railway roadbed according to claim 8, it is characterized in that utilizing hoisting transportation equipment replacement jack to sling the free end of prefabricated floating plate, determine the thickness adjusting height adjusting cushion plate needed for each plate end isolation mounting of end both sides, fall free end, to sling again the adjustment end of prefabricated floating plate, determine the thickness of height adjusting cushion plate needed for each plate end isolation mounting of free end both sides, then hoisting transportation equipment is utilized also to be sling by the free end of prefabricated floating plate, prefabricated floating plate entirety is made to be in suspended state, each plate end isolation mounting that prefabricated floating plate free end and adjustment end both sides are arranged is placed the height adjusting cushion plate of respective thickness respectively, then prefabricated floating plate entirety is fallen, complete the first jacking leveling of one piece of prefabricated floating plate.

11. installation jacking leveling methods of prefabricated floating plate in floating plate railway roadbed according to claim 1, when it is characterized in that utilizing jack pair Elastic Isolator to load in step (8), what each Elastic Isolator was corresponding arranges a jack, utilizes compression pump to drive each Elastic Isolator in all jack pair prefabricated floating plates to apply respectively to adjust load simultaneously.

The installation jacking leveling method of prefabricated floating plate in 12. floating plate railway roadbeds according to claim 1 or 11, is characterized in that actual adjustment load that each Elastic Isolator of jack pair applies is 0.9 ~ 1.1 times of theoretical single static determinacy load value.