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Joint section structure of highway soft soil roadbed and bridge and culvert structure and construction method

A soft soil roadbed and structure technology, applied in the direction of roads, bridges, roads, etc., can solve the problems of driving safety impact, bridge head jumping, etc.

Active Publication Date: 2021-03-09
中电建路桥集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bridges, culverts and subgrades currently in operation in Jiangmen area have different degrees of settlement. The subgrade subsidence of some roads has reached more than 1m, and the phenomenon of vehicle jumping at the bridge head is serious, which has a great impact on driving safety.

Method used

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  • Joint section structure of highway soft soil roadbed and bridge and culvert structure and construction method
  • Joint section structure of highway soft soil roadbed and bridge and culvert structure and construction method
  • Joint section structure of highway soft soil roadbed and bridge and culvert structure and construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Such as Figure 1 to Figure 3 As shown, the joint section structure of the highway soft soil subgrade and the bridge and culvert structure in this embodiment includes a bridgehead subgrade composed of subgrade main body 1, transition subgrade 2 and abutment 3 arranged sequentially from back to front, and the top of the bridgehead subgrade is installed with Lap board 4, the front end of the board 4 is lapped at the first sinker 5 provided on the top of the abutment 3, the rear end of the board 4 is lapped at the second sinker 6 provided at the top of the transition roadbed 2, the first sinker Both the groove 5 and the second sinker 6 are fixed with a fixed support 7 supported on the edge of the strap 4, and the top of the fixed support 7 is protrudingly provided with a central round table 8 and a fixed sleeve that contacts with the bottom surface of the strap 4. In the piezoelectric ring 9 on the periphery of the central round platform 8, the top surface of the piezoelec...

Embodiment 2

[0071] The difference between this embodiment and embodiment 1 is:

[0072] The top of the fixed support is protruded with a central round platform in contact with the bottom surface of the strapping plate and a normally open micro switch fixed on the periphery of the central round platform. The top surface of the micro switch is lower than the top surface of the central round platform, There is a gap between them, and the micro switch is conductively connected to the heat pipe embedded in the temporary support of sulfur mortar through the lead wire, and the circuit where the heat pipe and the micro switch are located is connected to the mains.

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Abstract

The invention provides a joint section structure of a highway soft soil roadbed and a bridge and culvert structure and a construction method. Once the bridge head is settled, the bridge abutment position which is settled and is close to the bridge surface firstly occurs, so that the butt strap is in a state of low front part and high rear part, and after a vehicle drives down from the bridge, thebutt strap is pressed to generate intermittent compression on piezoelectric rings or microswitches in a first sinking groove and a second sinking groove; therefore, a piezoelectric ring or a microswitch is used for triggering a heating pipe, and a sulfur mortar temporary support can be removed after the heating pipe is heated, so that a settlement marker post can sink under the action of a springto prompt that the settlement of the bridge head exceeds the limit, and the settlement condition of the bridge head can be conveniently found in time and controlled in time.

Description

technical field [0001] The invention relates to a joint section structure and construction method of soft soil subgrade of highway and bridge and culvert structure. Background technique [0002] The construction of the joint section between soft soil subgrade and bridge and culvert structures is a problem encountered in many current engineering constructions. After decades of continuous development, there are many methods of soft soil foundation treatment, and new methods, new materials, and new processes are still emerging. For a specific project, how to choose the appropriate foundation treatment method has become a problem that everyone pays attention to. At present, there are various ground treatment technologies for the joint section between soft soil subgrade and bridge and culvert structures in China, including the following: prestressed pipe pile, cement mixing pile method, surcharge preloading method, replacement method, etc. In foreign countries, there are many w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00E01C3/00
CPCE01D19/00E01C3/00Y02A30/60
Inventor 朱伟杨开放崔小波
Owner 中电建路桥集团有限公司