CN220207344U - Low-cycle reciprocating test device for plate-type ballastless track sliding layer component - Google Patents
Low-cycle reciprocating test device for plate-type ballastless track sliding layer component Download PDFInfo
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- CN220207344U CN220207344U CN202321701506.6U CN202321701506U CN220207344U CN 220207344 U CN220207344 U CN 220207344U CN 202321701506 U CN202321701506 U CN 202321701506U CN 220207344 U CN220207344 U CN 220207344U
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- plate
- sliding layer
- precast concrete
- loading
- test
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- 239000012791 sliding layer Substances 0.000 title claims abstract description 48
- 239000011178 precast concrete Substances 0.000 claims abstract description 31
- 239000004567 concrete Substances 0.000 claims abstract description 25
- 238000004873 anchoring Methods 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 239000004746 geotextile Substances 0.000 claims description 14
- 239000010410 layer Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 229920002396 Polyurea Polymers 0.000 claims description 5
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006262 high density polyethylene film Polymers 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a low-cycle reciprocating test device for a plate-type ballastless track sliding layer component, which comprises an anchor floor, a counterforce device, a loading device and a test structure, wherein the anchor floor is provided with a plurality of slide blocks; the test structure mainly comprises a concrete base, two-cloth one-film sliding layers, precast concrete boards and a pile load from bottom to top; the concrete base is fixedly connected with the anchoring floor through a groove; a two-cloth one-film sliding layer is arranged between the precast concrete slab and the concrete base; a loading device is arranged between the precast concrete slab and the counterforce device; the counterforce device is arranged at one end of the anchoring floor; the loading device comprises a hydraulic servo control system, a loading beam and an anchor rod, wherein the loading beam and the anchor rod are used for applying load to a test piece; the pile is laid on the precast concrete board. The utility model can accelerate the development progress of the test, does not need complex operation, has simple device, short period and high precision, can improve the safety of the test, and has good practical value.
Description
Technical Field
The utility model relates to the field of rail transit, in particular to a low-cycle reciprocating test device for a plate-type ballastless track sliding layer component.
Background
With the continuous extension of the high-speed railway network, the high-speed railway inevitably spans over the earthquake-prone area. The CRTS II type slab ballastless track is used as a longitudinally connected integral track type commonly used for high-speed railways, and under the action of strong earthquake load, the track structure is easily seriously damaged, so that the safety operation of a train is seriously threatened. A low-cycle reciprocating test of the sliding layer member of the plate-type ballastless track is carried out, the friction coefficient and the abrasion performance of the sliding layer material of the sliding layer member are ascertained, and theoretical basis is provided for engineering technicians to reasonably put forward anti-seismic design and construction schemes. However, the damage evolution mechanism of each key component of the high-speed railway track system after the earthquake action is not researched, and a large number of membrane plates are required to be erected in the loading process of the existing test device, so that the test cost is high and the period is long.
Disclosure of Invention
Aiming at the problems in the background technology, the utility model provides a low-cycle reciprocating test device for a sliding layer component of a plate-type ballastless track, which is simple in device, short in period and high in precision by arranging a counter force device, an anchoring plate, a diagonal bracing anchor rod and other matched control systems to carry out a low-cycle reciprocating load test on the sliding layer component with two cloth films. The specific technical scheme is as follows:
a low-cycle reciprocating test device for a plate-type ballastless track sliding layer component comprises an anchoring floor, a counter-force device, a loading device and a test structure; the test structure mainly comprises a concrete base, two-cloth one-film sliding layers, precast concrete boards and a pile load from bottom to top; the concrete base is fixedly connected with the anchoring floor through a groove; a two-cloth one-film sliding layer is arranged between the precast concrete slab and the concrete base; a loading device is arranged between the precast concrete slab and the counterforce device; the counterforce device is arranged at one end of the anchoring floor; the loading device comprises a hydraulic servo control system, a loading beam and an anchor rod, wherein the loading beam and the anchor rod are used for applying load to a test piece; the pile is laid on the precast concrete board.
Preferably, the reaction device is provided with an anchoring plate for fixing a hydraulic servo control system, and the hydraulic servo control system is connected with the reaction device through two inclined strut anchor rods.
The low-circumference reciprocating test device for the plate-type ballastless track sliding layer component is characterized in that two anchor rods and two loading beams are used for applying load to a test structure, the two loading beams are respectively positioned at two ends of the precast concrete plate, the two anchor rods are positioned at two sides of the precast concrete plate, and the loading beams are fixed on the precast concrete plate.
According to the low-cycle reciprocating test device for the plate-type ballastless track sliding layer component, the stacking load consists of a plurality of concrete test blocks, and the dead weight of the components such as the track plate, the mortar layer, the steel rail, the fastener and the like and the live load of a train are simulated by changing the stacking load quality.
Preferably, the bridge deck is simulated by spraying a polyurea waterproof layer between the precast concrete slab and the two-layer-one-film sliding layer. The two-cloth one-film sliding layer passes through a specification of 400 g/m 2 First geotextile with specification of 200g/m 2 The second geotextile and the polyethylene film, and is fixed by adopting a steel plate pressing strip around.
According to the low-circumference reciprocation test device for the plate-type ballastless track sliding layer component, the concrete base is fixedly connected with the lower anchoring floor through the longitudinal and lateral limit bolts and the groove structure.
Compared with the prior art, the utility model provides a low-cycle reciprocating test device for a plate-type ballastless track sliding layer component, which has the following advantages:
1. the utility model applies normal pressure to the two-cloth one-film sliding layer by changing the pile-loading concrete test block, and simulates the dead weight of the components such as the track plate, the mortar layer, the steel rail, the fastener and the like and the live load of the train by changing the pile-loading quality, and the pile-loading makes low-cycle reciprocating horizontal movement along with the sliding layer in the test process.
2. According to the utility model, the test development progress can be accelerated without complex operation, in the loading process, the loading beam and the anchor rod are integrally connected with the upper structure as part, and the base and the sliding layer are integrally connected with the ground anchor as part, so that the stability of the test structure is maintained, the lateral overturning is avoided, and the test safety is improved.
3. The utility model can simulate the stress state of the sliding layer structure on the CRTS II type plate-type ballastless track bridge more truly, can effectively test the friction coefficient and the abrasion performance of the sliding layer material, and provides theoretical basis for engineering technicians to reasonably put forward earthquake-resistant design and construction schemes.
Drawings
FIG. 1 is a schematic structural view of a low-cycle reciprocation test device for a plate-type ballastless track sliding layer member;
FIG. 2 is a cross-sectional view of the low-circumference reciprocation test unit of the sliding layer member of the slab ballastless track of the present utility model;
FIG. 3 is a cross-sectional view of a test structure according to the present utility model.
In the figure: 1. anchoring the floor; 2. a reaction force device; 21. an anchor plate; 22. a diagonal bracing anchor rod; 3. a loading device; 31. a hydraulic servo control system; 32. loading a beam; 33. a bolt; 4. stacking; 5. prefabricating concrete slabs; 51. a polyurea waterproof layer; 6. two cloth-film sliding layers; 61. specification 400 g/m 2 Geotextile; 62. specification 200g/m 2 Geotextile clothThe method comprises the steps of carrying out a first treatment on the surface of the 63. A polyethylene film; 64. pressing the steel plate; 7. a concrete base; 71. a longitudinal limit bolt; 72. lateral limit bolts 8 and grooves.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described below with reference to the embodiments and the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Specific examples are as follows:
the device comprises an anchor floor 1, a counterforce device 2, a loading device 3 and a test structure, wherein the test device is shown in figures 1, 2 and 3; the test structure mainly comprises a concrete base 7, two one-film sliding layers 6, precast concrete boards 5 and a piling 4 from bottom to top; the concrete base 7 is fixedly connected with the anchoring floor 1 through a groove 8; a two-cloth one-film sliding layer 6 is arranged between the precast concrete slab 5 and the concrete base 7; a loading device 3 is arranged between the precast concrete slab 5 and the counterforce device 2; the counterforce device 2 is arranged at one end of the anchoring floor 1; the loading device 3 comprises a hydraulic servo control system 31, a loading beam 32 and an anchor rod 33, wherein the loading beam 32 and the anchor rod are used for applying load to a test piece; the pile 4 is laid on the precast concrete board 5.
In the low-cycle reciprocating test device for the plate-type ballastless track sliding layer component in the embodiment, the counterforce device 2 is provided with the anchoring plate 21 for fixing the hydraulic servo control system 31, and the hydraulic servo control system 31 is connected with the counterforce device 2 through two diagonal bracing anchor rods 22 so as to facilitate experimental loading. The load beam 32 and the anchor rods 33 for applying load to the test structure are two, the two load beams 32 are respectively positioned at two ends of the precast concrete board 5, the two anchor rods 33 are positioned at two sides of the precast concrete board 5, and the load beam 32 is fixed on the precast concrete board 5.
The stacking 4 in this embodiment is composed of several concrete test blocks, two of which are provided with a film sliding layerThe self weight of the upper structure of the test bed 6 mainly comprises a steel rail, a fastener, a track plate, a CA mortar layer and a base plate, constant load of the components such as the track plate, the mortar layer, the steel rail, the fastener and the like and movable load of a train are simulated by changing the mass of the pile load 4, and the pile load 4 performs low-cycle reciprocating horizontal movement along with the sliding layer 6 in the test process. The bridge deck is simulated by spraying a polyurea waterproof layer 51 between the precast concrete board 5 and the two-cloth one-film sliding layer 6, wherein the two-cloth one-film sliding layer 6 is composed of 3 layers of materials, and the two-cloth one-film sliding layer comprises the following components in sequence from bottom to top: specification 200g/m 2 Geotextile 62, 1mm thick high density polyethylene film 63 and gauge 400 g/m 2 Is a geotextile 61 of the same. 200g/m of the specification 2 The geotextile 62 of (2) is laid on the upper part of the concrete base 7, a geotextile 63 with the thickness of 1mm is laid on the geotextile, and the geotextile are fixed by adopting a steel plate pressing strip 64 around the geotextile. After the polyurea waterproof layer 51 is sprayed on the bottom surface of the precast concrete board 5, adhesive is coated on the two sides of the surface along the loading direction of the component, and then the specification of 400 g/m is adhered 2 The prefabricated concrete slab 5 is stacked on the geomembrane on the top surface of the concrete base 7 to form a two-cloth one-membrane sliding layer 6 structure. In order to avoid vertical lifting of the components during loading, the concrete base 7 of the embodiment is fixedly connected with the lower anchoring floor 1 through the structures of the longitudinal 71 and lateral 72 limit bolts and the grooves 8.
The loading process of the device for the low-cycle reciprocating test is as follows: the concrete base 7 and the two-cloth-one-film sliding layer 6 are connected with the anchoring floor 1 as a part of whole, and the geomembrane and the geotextile are fixed by adopting the steel plate battens 64 around; the hydraulic servo control system 31 is connected with the counterforce device 2 through the anchoring plate 21 and the two inclined strut anchor rods 22, one end of the hydraulic servo control system 31 is connected with the loading beam 32 and the anchor rods 33 which apply load, and the loading beam 32 and the anchor rods 33 are connected with the upper precast concrete slab 5 as a part as a whole, so that the stability of a test structure is maintained, the lateral overturning is avoided, and the safety of a test is improved. And then, a low-cycle reciprocating load is applied to the precast concrete slab 5 through the action of the hydraulic servo control system 31, so that the friction coefficient and the abrasion performance of the two-in-one film sliding layer 6 material are measured, and a theoretical basis is provided for engineering technicians to reasonably put forward an anti-seismic design and construction scheme.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A board-like ballastless track sliding layer component low cycle test device, its characterized in that: comprises an anchoring floor (1), a counterforce device (2), a loading device (3) and a test structure; the test structure mainly comprises a concrete base (7), two cloth-film sliding layers (6), precast concrete plates (5) and a stacking (4) from bottom to top; the concrete base (7) is fixedly connected with the anchor floor (1) through a groove (8); a two-cloth one-film sliding layer (6) is arranged between the precast concrete slab (5) and the concrete base (7); a loading device (3) is arranged between the precast concrete plate (5) and the counter-force device (2); the counterforce device (2) is arranged at one end of the anchoring floor (1); the loading device (3) comprises a hydraulic servo control system (31), a loading beam (32) and an anchor rod (33) which are used for applying load to a test piece; the piling load (4) is paved on the precast concrete board (5).
2. The low-cycle test device for the plate-type ballastless track sliding layer member, according to claim 1, is characterized in that: the reaction device (2) is provided with an anchor plate (21) for fixing a hydraulic servo control system (31), and the hydraulic servo control system (31) is connected with the reaction device (2) through two inclined strut anchor rods (22).
3. The low-cycle test device for the plate-type ballastless track sliding layer member, according to claim 1, is characterized in that: the two loading beams (32) and the two anchor rods (33) are used for applying load to the test structure, the two loading beams (32) are respectively positioned at two ends of the precast concrete board (5), the two anchor rods (33) are positioned at two sides of the precast concrete board (5), and the loading beams (32) are fixed on the precast concrete board (5).
4. The low-cycle test device for the plate-type ballastless track sliding layer member, according to claim 1, is characterized in that: the pile load (4) consists of a plurality of concrete test blocks, and the dead weight of related components including a track plate, a mortar layer, a steel rail and a fastener and the live load of a train are simulated by changing the quality of the pile load (4).
5. The low-cycle test device for the plate-type ballastless track sliding layer member, according to claim 1, is characterized in that: the bridge deck is simulated between the precast concrete slab (5) and the two-cloth one-film sliding layers (6) by spraying a polyurea waterproof layer (51); the two-cloth one-film sliding layer (6) passes through a specification of 400 g/m 2 Is 200g/m in specification and a first geotextile (61) 2 And the second geotextile (62) and the polyethylene film (63) are formed, and are fixed by steel plate pressing strips (64) at the periphery.
6. The low-cycle test device for the plate-type ballastless track sliding layer member, according to claim 1, is characterized in that: the concrete base (7) is fixedly connected with the lower anchoring floor (1) through a longitudinal (71) limit bolt, a lateral (72) limit bolt and a groove (8) structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321701506.6U CN220207344U (en) | 2023-06-30 | 2023-06-30 | Low-cycle reciprocating test device for plate-type ballastless track sliding layer component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321701506.6U CN220207344U (en) | 2023-06-30 | 2023-06-30 | Low-cycle reciprocating test device for plate-type ballastless track sliding layer component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220207344U true CN220207344U (en) | 2023-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321701506.6U Active CN220207344U (en) | 2023-06-30 | 2023-06-30 | Low-cycle reciprocating test device for plate-type ballastless track sliding layer component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220207344U (en) |
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2023
- 2023-06-30 CN CN202321701506.6U patent/CN220207344U/en active Active
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