CN215289502U

CN215289502U - Rubber spring floating plate structure convenient to replace

Info

Publication number: CN215289502U
Application number: CN202023096785.7U
Authority: CN
Inventors: 牛文强; 陈鹏; 吴建忠; 许孔斌; 陈天平; 孙海军; 吴文平
Original assignee: Zhejiang Tiantie Industry Co Ltd
Current assignee: Zhejiang Tiantie Industry Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-12-24
Anticipated expiration: 2030-12-21

Abstract

A rubber spring floating plate structure convenient to replace comprises a track bed plate body, wherein the upper surface of the track bed plate body is provided with two steel rails and a fastener connecting system which are arranged in parallel, the track bed plate body is formed by splicing a plurality of blocks, each track bed plate body is provided with a limiting boss along the longitudinal end part, the lower part of the track bed plate body is provided with a concrete substrate, the track bed plate body comprises an integrally formed cast-in-place reinforced concrete track bed or a prefabricated reinforced concrete track bed, the track bed plate body is a structure body with a cuboid or trapezoid cross section, rubber springs for point support are arranged in the track bed plate body at certain intervals, the rubber springs are provided with metal outer sleeves, and the metal outer sleeves are pre-embedded in the track bed plate body so as to facilitate construction and replacement of the rubber springs; from this, the utility model has the characteristics of the efficiency of construction is high, the later stage is changed conveniently, and has effectively solved vibration and secondary structure noise that has reduced the track transportation vehicles operation production.

Description

Rubber spring floating plate structure convenient to replace

Technical Field

The utility model relates to a technical field that the track damping was fallen and is fallen and make an uproar especially relates to a rubber spring floating plate structure convenient to change.

Background

Along with the rapid development of urban rail transit in China, the rail transit inevitably produces noise and vibration in operation, produces more or less influence to driver, passenger and pedestrian, resident on every side, and noise and environmental vibration that the train operation arouse not only all-round spread to the space, have moreover sound level height, wide frequency band, influence wide range, characteristics such as difficult management, be one of the difficult problem that restricts urban rail transit to green, environmental protection direction development awaits a urgent need to be solved. In order to overcome the influence of vibration and noise on drivers, passengers and surrounding pedestrians and residents, the technology and the product capable of effectively reducing vibration and noise are required to meet the requirements of reducing vibration and noise of urban rail transit and improve the safety and the comfort of rail transit trip.

At present, in order to reduce the problems of vibration and noise generated by rail transit, various vibration reduction rails are adopted in rail transit construction, and the problems of large vibration isolation element structure, difficulty in rigidity adjustment, noise amplification in a vehicle, difficulty in replacement of vibration isolators, difficulty in maintenance and the like exist when a wide range of floating plate rails are adopted in a special vibration reduction area. Along with the high-speed and precision of urban rail construction, the floating slab rail in the existing special vibration reduction section is difficult to meet the requirements, and the rail structure needs to meet the requirements of various factors according to the requirements, namely, the floating slab system requires that the height of the rail structure can be adjusted more, the vibration isolation elements are more flexibly arranged and replaced, the deviation capability of adapting to tunnel construction is better, and the maintenance workload in the later operation stage can be reduced.

Therefore, in view of the above-mentioned drawbacks, the designer of the present invention develops a rubber spring floating plate structure convenient for replacement by combining the experience and achievement of the related industry for many years through careful research and design to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rubber spring floating plate structure convenient to change has that the efficiency of construction is high, the convenient characteristics are changed in later stage, and has effectively solved the vibration and the quadratic structure noise problem that have reduced rail transit vehicle operation production, has the practicality.

In order to realize the above-mentioned purpose, the utility model discloses a rubber spring floating plate structure convenient to change contains a way bed board body, the upper surface of a way bed board body is equipped with two rail and fastener connected system of parallel arrangement, fastener connected system sets up in the rail both sides in order to be fixed in a way bed board body with the rail on, a way bed board body forms for the polylith concatenation, and each way bed board body is provided with spacing boss along vertical tip, the lower part of a way bed board body sets up concrete base, its characterized in that:

the ballast bed plate body comprises an integrally formed cast-in-place reinforced concrete ballast bed or a prefabricated reinforced concrete ballast bed, the cross section of the ballast bed plate body is a cuboid or trapezoid structure body, rubber springs for point type support are arranged in the ballast bed plate body at certain intervals, the rubber springs are provided with metal outer sleeves, and the metal outer sleeves are pre-embedded in the ballast bed plate body so as to facilitate construction and replacement of the rubber springs.

Wherein: the rubber spring is made of a rubber material or a microporous foam material, and the static stiffness of the rubber spring is 5-14 kN/mm.

Wherein: the static stiffness of the rubber spring is 6-8 kN/mm.

Wherein: the ballast bed plate body is provided with at least two limiting bosses along the longitudinal end part, and the limiting bosses are isolated from the ballast bed plate body by cushion pads.

Wherein: the cushion pad is made of a rubber material or a microporous foam material, and the static rigidity of the cushion pad is 20-40 kN/mm.

As can be seen from the above, the rubber spring floating plate structure convenient to replace of the present invention has the following effects:

(1) the ballast bed plate is effectively isolated from the base, so that rigid contact between concrete structures is avoided, and the vibration of the ballast bed plate is isolated from being transmitted to a lower foundation.

(2) The metal outer sleeve is arranged in the ballast bed plate body, so that the rubber spring can be conveniently installed and replaced.

(3) The longitudinal and transverse forces generated by external loads can be effectively resisted, and the safety of the system is ensured.

(4) The vibration isolation element made of rubber materials can effectively reduce vibration and secondary structure noise generated by vehicle operation.

The details of the present invention can be obtained from the following description and the attached drawings.

Drawings

Fig. 1 shows a top view of the rubber spring floating plate structure convenient for replacement.

Figure 2 shows a cross-sectional view (rubber spring position) of the present invention.

Figure 3 shows a cross-sectional view (limiting boss position) of the present invention.

Reference numerals:

11. a ballast bed plate body; 12. a steel rail; 13. a fastener attachment system; 14. a rubber spring outer sleeve; 15. a rubber spring; 16. a gap; 17. a limiting boss; 18. a cushion pad; 19. a substrate.

Detailed Description

Referring to fig. 1 to 3, the rubber spring floating plate structure convenient for replacement of the present invention is shown.

Rubber spring floating plate structure convenient to change contains track bed board body 11, the upper surface of track bed board body 11 is equipped with two rail 12 and fastener connected system 13 of parallel arrangement, fastener connected system 13 sets up on rail 12 both sides are in order to be fixed in track bed board body 11 with the rail, track bed board body 11 forms for the polylith concatenation, and each track bed board body 11 is provided with spacing boss 17 along vertical tip, the lower part of track bed board body 11 sets up concrete basement 19.

Referring to fig. 2, the track bed slab body 11 includes an integrally formed cast-in-place reinforced concrete track bed or a prefabricated reinforced concrete track bed, the cross section of the track bed slab body is a rectangular or trapezoidal structural body, point-type supporting rubber springs 15 are arranged in the track bed slab body 11 at certain intervals, the rubber springs 15 are provided with metal outer sleeves 14, and the metal outer sleeves 14 are embedded in the track bed slab body 11, so that the rubber springs are convenient to construct and replace.

Optionally, the rubber spring 15 is made of a rubber material or a microcellular foam material, and the static stiffness of the rubber spring is 5-14 kN/mm, preferably 6-8 kN/mm.

Referring to fig. 3, the track bed plate body 11 is provided with at least two limiting bosses 17 along the longitudinal end, and the limiting bosses 17 are isolated from the track bed plate body 11 by cushion pads 18.

Optionally, the cushion pad 18 is made of a rubber material or a microcellular foam material, and the static stiffness of the cushion pad is 20-40 kN/mm.

Wherein, the utility model discloses a construction method of rubber spring floating plate structure convenient to change, it has adopted prefabricated track board rubber spring construction method, mainly contains following step:

the method comprises the following steps: and (5) pouring the foundation concrete.

Clearing accumulated water on the tunnel foundation, checking the deviation value of the tunnel center line and the track center line, binding steel bars and pouring concrete according to the measurement data, and strictly controlling the surface flatness during pouring concrete.

Step two: and (5) curing the foundation concrete.

Step three: and (5) transporting the track slab.

The track plate is transported to an operation place by using the track plate transporting vehicle, the track plate is hoisted on the plate transporting vehicle, whether the track plate is aligned with the center of the plate transporting vehicle or not is checked, the position of the track plate in the transportation process is controlled, and the track plate is firmly fixed by adopting a locking device. The plate conveying vehicle runs to the working face.

Step four: and laying the track slab.

The track slab is laid by adopting a track or trackless small laying crane, the track slab is lifted and then is moved to a laying position, and the central line, the end line and the side line of the track slab are correspondingly placed in position accurately according to the measured data.

Step five: and (5) installing a buckle part.

And after the track slab is accurately in place, installing the fastening parts at the upper part of the track slab, and transporting the fastening parts to a working surface by adopting a transport vehicle, wherein the installation sequence is rubber tie plate installation under the slab → iron tie plate installation → rubber tie plate installation under the track.

Step six: and (5) laying steel rails.

The steel rail is transported to a working face by adopting a transport vehicle, placed in the rail bearing groove of the iron base plate in a manual matching mode by laying a small crane, and provided with a gauge block, a connecting bolt and bounce.

Step seven: and (5) jacking the track slab.

Two schemes can be adopted for jacking the track slab. The method comprises the following steps:

1. scheme 1

The track slab is jacked up by adopting the special regulator for the track slab, the special regulator is installed on four reserved bolt holes on the side of the track slab, the regulator can realize vertical and horizontal regulation of the track slab, and the track slab is accurately positioned through CP III on-site tracking measurement. The jacking sequence of the track slab is that four regulators on two sides of the track slab are installed → the track slab is jacked → CP III is measured → the track slab is accurately positioned → a positioning pin is installed → a vibration isolator and a height adjusting gasket are installed → a regulator is disassembled → a locking gasket is installed → the jacking is completed.

2. Scheme 2

The track slab is jacked up by adopting a special hydraulic jack, the hydraulic jack is arranged in four outer sleeves on the track slab, the track slab can be adjusted up and down by the hydraulic jack, the longitudinal and transverse adjustment is carried out by adopting a special lateral jack, and the track slab is accurately positioned by CP III on-site tracking measurement. The rail plate jacking sequence is that four hydraulic jacks are mounted on the surface of the rail plate → the rail plate is jacked → CP III is measured → the rail plate is accurately positioned → a positioning pin is mounted → a vibration isolator and a height adjusting gasket are mounted → a hydraulic jack is dismounted → a locking gasket is mounted → the jacking is completed.

Step eight: and (5) filling the limiting boss.

After the prefabricated track slab is accurately in place, sundries and dust in the limiting boss are cleaned, embedded steel bars are restored, an elastic base plate is installed, the elastic base plate is required to be tightly attached to the periphery of the slab side, necessary fixing measures are adopted for fixing the elastic base plate firmly, the lower portion of the elastic base plate is sealed by polyurethane foaming agent, concrete is prevented from flowing into the slab bottom when being poured, and the concrete pouring height of the limiting boss is flush with the slab surface.

Wherein, the utility model discloses a construction method of rubber spring floating plate structure convenient to change, it has adopted cast-in-place track board rubber spring construction method, mainly contains following step:

Step two: and (5) curing the foundation concrete.

Step three: laying ditch cover plate and isolating layer.

Before laying, the foundation concrete surface debris are cleaned up, the ditch apron is laid, it needs to weld firmly to inspect upper portion connecting reinforcement and apron overlap joint, and the isolation layer is laid along the circuit is vertical to be laid, lays the circuit central part earlier, lays both sides wall part again, and the isolation layer overlap joint volume is not less than 10cm, and the width is not less than 3 meters, and there is the damaged glue that needs to seal in the surface to handle.

Step four: and (5) assembling a reinforcement cage base.

The assembly of the reinforcement cage base can be divided into the following three sub-steps:

substep 4.1: and (4) erecting the platform, reasonably arranging reinforcement cage assembly platforms according to the on-site condition of the track laying base, and requiring the platform to be flat.

Substep 4.2: simulating and lofting the site environment of the reinforcing steel bar assembling station; on the concrete platform, according to the floating slab track beds with different curvature radiuses, piles in the track are arranged every 5 m on the central line of the track, and slab edge ink lines are arranged in a bouncing mode according to the central line and are used as control lines for controlling the assembly of the steel reinforcement cage of the floating slab and the geometric dimension of the track.

Substep 4.3: erecting steel rails and installing fastening accessories; and carrying out rail erecting operation according to the central line of the lofting line of the set-up platform, wherein a support frame is adopted for steel rail erection, and the support frame is arranged at a position not more than 3 m. After the steel rail is erected, the geometric dimension of the steel rail is roughly adjusted, and fastening parts are assembled as required.

Step five: and installing the vibration isolator outer sleeve.

Placing an outer sleeve according to the central line of a lofting line of a set-up station and the relative position of the outer sleeve of the vibration isolator in a drawing, wherein the outer sleeve is placed to pay attention to the directivity, and after the placement is finished, whether the spacing is correct is checked, and the spacing of the vibration isolator is different from the spacing of the outer strand and the spacing of the inner strand on a curve.

Step six; and (5) binding a reinforcement cage.

Before binding the reinforcement cage, processing and classifying the variety, grade, specification and quantity of the reinforcement according to drawings and data; when the reinforcement cage is bound according to the requirement, a protective layer cushion block needs to be placed under the reinforcement to ensure that the protective layer of the concrete meets the standard requirement.

The installation of the reinforcing steel bars needs to pay attention to whether the installation of the shear hinges conflicts with the binding of the reinforcing steel bars, and the rationality of base binding and field construction is considered.

When the steel bars are bound around the outer sleeve of the vibration isolator, attention is paid to avoiding moving the outer sleeve of the vibration isolator, and meanwhile, the outer sleeve of the vibration isolator needs to be considered to have certain flexibility so as to be convenient for being transported to a laying section to adjust the position.

Step seven: and (5) transporting the reinforcement cage.

The transportation of the reinforcement cage is divided into the following substeps:

substep 7.1: the reinforcement and the hoisting of the steel reinforcement cage meet the hoisting and transportation requirements of the steel reinforcement cage for ensuring the overall stability of the steel reinforcement cage, and the steel reinforcement cage and a steel rail are integrally reinforced into a whole, so that the requirements of construction technology are met.

Substep 7.2: the engineering truck is provided with two 12.5-meter flat cars, and in order to meet the requirement of controlling the deformation of the reinforcement cage in the transportation process, the reinforcement cage on the flat car is easy to deform when a train passes through turnouts and small-radius curves because the reinforcement cage is a cross flat car, and in order to control the deformation of the reinforcement cage on the cross flat car, a bogie device can be placed on the flat car so as to reduce the deformation of the reinforcement cage.

Step eight: and (5) laying a reinforcement cage.

The steel reinforcement cage is transported to the place of laying, and two track-laying gantry cranes are adopted to lift the steel reinforcement cage, so that the lifting speed and the traveling speed of the track-laying gantry cranes are strictly controlled, and the steel reinforcement cage is prevented from generating large deformation due to lifting and transportation.

And (4) paying attention to the selection of the lifting point, calculating the lifting point according to the deflection deformation of the reinforcement cage, and controlling the deformation of the reinforcement cage.

And a supporting mode is adopted, adjustment is carried out when the reinforcement cage is in place, the center line of the reinforcement cage is ensured to be close to the center line of the line, and the curve section is concerned with the deviation value of the center of the bottom of the reinforcement cage and the center of the track.

Step nine: and adjusting a reinforcement cage and a track.

After the reinforcement cage is laid in place, a combined body of the reinforcement cage and the steel rail is erected and suspended by a support frame, and the steel rail is adjusted by the support frame to realize the coincidence of the center line of the reinforcement cage and the center line of the circuit.

And (4) removing the connecting system of the steel rail and the reinforcement cage, and adjusting the geometric dimension of the track through the support frame according to the track laying base mark. The curve section needs to be added with adjustment and check of the external thigh sagittal of the curve. The specific track adjusting method comprises the following steps: firstly, leveling and then adjusting the track gauge; firstly, adjusting a base mark part; between post-tone base marks; coarse adjustment is carried out firstly, then fine adjustment is carried out, and repeated adjustment is carried out to meet the requirements.

Step ten: and (5) pouring concrete into the ballast bed.

Before concrete is poured, the installation positions of the outer sleeve and the shear hinge of the vibration isolator need to be checked, the outer sleeve of the vibration isolator is required to be covered by a cover plate, cement paste and sundries are prevented from falling into the outer sleeve of the vibration isolator, the concrete is compacted by using the plug-in type concrete vibrator, and the pouring of the whole block of road bed plate is not allowed to be interrupted, so that cold joints are avoided, and the dynamic strength of the floating plate is weakened.

Step eleven: and (5) curing the track bed concrete.

Step twelve: and (5) jacking the cast-in-situ track slab.

And after the concrete is poured and cured for 28 days, the design strength is achieved, and the floating slab is lifted from the floating slab supporting foundation by adopting a special hydraulic jack. The concrete jacking sequence of the cast-in-situ track slab is as follows: acquiring floating plate jacking data → installing sealing strips on two sides of a track bed → arranging vibration isolators → installing positioning pins → installing vibration isolators → jacking floating plates (1-2 times) → quality inspection.

Step thirteen: and (5) filling the limiting boss.

After the cast-in-place track slab jacking is finished, sundries and dust in the limiting boss are cleaned, embedded steel bars are recovered, the elastic base plate is installed, the installation requirement of the elastic base plate is tightly attached to the periphery of the slab side, necessary fixing measures are taken for fixing, the lower portion of the elastic base plate is sealed by polyurethane foaming agent, the concrete is prevented from flowing into the slab bottom when being poured, and the concrete pouring height of the limiting boss is flush with the slab surface.

Therefore, the utility model has the advantages that:

therefore, the utility model discloses a rubber spring floating plate structure convenient to change's advantage lies in:

(1) the ballast bed plate is effectively isolated from the base, so that mechanical contact between concrete structures is avoided, and the vibration of the ballast bed plate is isolated from being transmitted to a lower foundation.

(5) Can realize through two kinds of different modes in the construction, and make rubber spring floating plate structure more reliable and stable after the construction, the efficiency of construction is high, can bear higher pressure.

(6) Through the concrete steps in the construction method, the rubber spring floating plate structure can bear better longitudinal and transverse forces, the safety performance is guaranteed, and meanwhile the construction efficiency can be guaranteed.

(7) By clearly limiting and recording the construction method, the whole rubber spring floating plate structure on the track can be ensured to ensure consistent stability.

It is to be understood that the above description and illustrations are exemplary only and are not intended to limit the present disclosure, application, or uses. While embodiments have been described in the embodiments and depicted in the drawings, the present invention is not limited to the particular examples illustrated by the drawings and described in the embodiments as the best mode presently contemplated for carrying out the teachings of the present invention, and the scope of the present invention is intended to include any embodiments that fall within the foregoing description and the appended claims.

Claims

1. The utility model provides a rubber spring floating plate structure convenient to change contains track bed board body, the upper surface of track bed board body is equipped with two rail and fastener connected system of parallel arrangement, fastener connected system sets up in the rail both sides in order to be fixed in the track bed board body with the rail on, track bed board body forms for the polylith concatenation, and each track bed board body is provided with spacing boss along vertical tip, the lower part of track bed board body sets up concrete base, its characterized in that:

2. The easy-to-replace rubber spring floating plate structure of claim 1, wherein: the rubber spring is made of a rubber material or a microporous foam material, and the static stiffness of the rubber spring is 5-14 kN/mm.

3. The easy-to-replace rubber spring floating plate structure of claim 2, wherein: the static stiffness of the rubber spring is 6-8 kN/mm.

4. The easy-to-replace rubber spring floating plate structure of claim 1, wherein: the ballast bed plate body is provided with at least two limiting bosses along the longitudinal end part, and the limiting bosses are isolated from the ballast bed plate body by cushion pads.

5. The easy-to-replace rubber spring floating plate structure of claim 4, wherein: the cushion pad is made of a rubber material or a microporous foam material, and the static rigidity of the cushion pad is 20-40 kN/mm.