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Roadbed reinforcement structure for preventing vehicle bump at bridge head and construction method thereof

A technology for strengthening structures and jumping vehicles at the bridge head, which is applied in roads, roads, buildings, etc., can solve the problems of accelerating the damage of boards, bridge abutments and expansion joints, increasing bridge maintenance costs, reducing road use functions, etc., and achieving the elimination of unevenness Settlement, reduce settlement difference, improve the effect of subgrade bearing capacity

Inactive Publication Date: 2018-12-14
WISDRI ENG & RES INC LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Vehicle jumping at the bridge head affects the comfort of the vehicle and reduces the use of the road. At the same time, for the bridge itself, due to the jump and impact of the vehicle passing the bridge head, additional impact loads are caused, which accelerates the expansion and contraction of the board and abutment. The destruction of joints not only increases the maintenance cost of the bridge but also reduces the service life

Method used

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  • Roadbed reinforcement structure for preventing vehicle bump at bridge head and construction method thereof
  • Roadbed reinforcement structure for preventing vehicle bump at bridge head and construction method thereof
  • Roadbed reinforcement structure for preventing vehicle bump at bridge head and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] as attached Figures 1 to 3 As shown, a subgrade reinforcement structure for preventing vehicle jumping at the bridge head includes an anti-settlement plate 5, which is arranged in the middle of the abutment and the backfill area behind the abutment, and the anti-settlement plate passes through the corbel 10 and the rib plate of the abutment 1 connection, below the anti-settlement plate 5 is the lower backfill area 3, above the anti-settlement plate 5 is the upper backfill area 6, and the side of the anti-settlement plate away from the abutment is the general subgrade section backfill area 9. Below the anti-settling plate 5, a cushion layer 4 is also arranged, and the length of the cushion layer 4 extends into the backfill area of ​​the general subgrade section by 2m. The length of the cushion layer 4 is 0.5m longer than the length of the anti-sedimentation plate 5 . Wherein, the anti-sedimentation plate 5 and the corbel 10 are fixed firmly by the reserved steel bar 11...

Embodiment 2

[0052] The present invention also provides the construction method of the subgrade reinforcement structure for preventing the vehicle from jumping at the bridge head, specifically comprising:

[0053] Step 1. Construction of abutment ribs. Complete the abutment concrete pouring in accordance with the construction sequence of tying the reinforced abutment and corbel structure—installing the abutment formwork—pouring the abutment concrete—removing the abutment formwork—and curing the abutment concrete. Design strength.

[0054]This step is basically a routine step, and it is only necessary to set the corbel at the middle of the abutment rib.

[0055] Step 2. During the construction of the subgrade section in the fill area of ​​the general road behind the abutment, the side slope shall be graded according to the side slope of 1:1.5, and a step width of 2m shall be reserved on the side slope, and an inward slope of 4% shall be set so that the abutment The post-filling area overla...

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Abstract

The invention discloses a roadbed reinforcement structure for preventing vehicle bump at bridge head, comprises an anti-settling plate arranged at the middle position of the bridge abutment and the backfill area behind the bridge abutment, wherein the anti-settling plate is connected with the bridge abutment rib plate through the brackets, a lower backfill area is arranged below the anti-settlingplate, an upper backfill area is arranged above the anti-settling plate, and a side of the anti-settling plate far away from the bridge abutment is a general roadbed backfill area. The invention alsodiscloses a construction method of a roadbed reinforcement structure for preventing vehicle bump at a bridge head. In the invention, the anti-settlement plate separates the backfill behind the abutment into two layers, reduces the height of the backfill behind the abutment, further reduces the settlement difference between the rigid abutment structure and the flexible embankment, strictly controlsthe compactness of the backfill on the abutment, thereby achieving the purpose of eliminating the uneven settlement between the abutment and the embankment, and effectively preventing the vehicle bump phenomenon at the bridge head.

Description

technical field [0001] The invention relates to a roadbed structure, in particular to a roadbed reinforcement structure for preventing vehicle jumping at the bridge head, and also relates to a construction method for the roadbed reinforcement structure for preventing vehicle jumping at the bridge head, belonging to the technical field of road traffic construction. Background technique [0002] As one of the determinants of the development of the transportation industry, road and bridge engineering has made great contributions to economic development. In the development of the new era, transportation has higher requirements on road and bridge quality and driving comfort. However, during the construction of roads and bridges, the problem of vehicle jumping at the bridgehead often occurs. Therefore, under the background of increasing traffic pressure, it is necessary to discuss the structural design of the subgrade and pavement of the road and bridge transition section to impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00
CPCE01C3/00
Inventor 程小亮周启国赵乾文叶春王阳陈维
Owner WISDRI ENG & RES INC LTD
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