New technology for treating vehicle bump at bridge ends

A bridge head jumping and new technology technology, applied in bridges, bridge parts, bridge construction and other directions, can solve problems such as affecting the normal traffic of the road, and achieve the effect of solving the bridge head jumping problem, simple and fast construction, and saving cost and construction period.

Inactive Publication Date: 2011-02-09
WENZHOU UNIVERSITY
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  • Abstract
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Problems solved by technology

[0004] However, the above-mentioned method has the influence on the normal traffic on the r

Method used

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  • New technology for treating vehicle bump at bridge ends
  • New technology for treating vehicle bump at bridge ends
  • New technology for treating vehicle bump at bridge ends

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Embodiment Construction

[0019] Aiming at the problem of car jumping at the bridge head in soft soil areas, firstly analyze the foundation of the geological conditions of the area where the car jumping at the bridge head is located and the basic situation of the pavement structure layer, and then use high-pressure grouting to control the grouting pressure and grouting composition to strengthen the deep part of the bottom layer The lower part of the foundation is weak, after a certain amount of grout is injected, then the construction is suspended, and after the injected grout solidifies, a hard soil layer is formed. Finally, grouting is injected between the pavement structure layer and the hard soil layer. Due to the support of the lower hard soil layer, the pressure of the grout will evenly lift the road surface at the road-bridge junction, and finally reduce the road-bridge differential settlement and eliminate the bridge head. Jump phenomenon. This technology can not only solve the problem of vehic...

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Abstract

The invention provides a new technology for treating vehicle bump at bridge ends, which comprises the following steps: firstly drilling holes in soil at joints of bridge ends and highways; secondly injecting cement grout into the holes drilled in first step and strengthening deep soil layers and surrounding soil layers; and thirdly after the deep soil layers are hardened, continuing to inject the cement grout, jacking up road surfaces on the upper part at the same time of strengthening weak soil layers. The new technology of the invention has the beneficial effects of not only solving the vehicle bump at the bridge ends on in-use roads, but also saving construction cost and construction period compared with other methods, not influencing normal traffic, and fundamentally solving the vehicle bump at the bridge ends, thereby having important engineering practical value in weak soil areas and being worthy of development, promotion and application.

Description

technical field [0001] The invention relates to a new method of fast construction, high economical efficiency and environmental protection for strengthening soft ground and solving the phenomenon of vehicle jumping at the bridge head in road engineering and bridge engineering. Background technique [0002] The problem of vehicle jumping at highway bridgeheads and bridge expansion joints is one of the more common defects in the quality of domestic highway construction. The so-called jumping at the bridge head and bridge expansion joints refers to the significant longitudinal slope change (commonly known as steps) on the road surface caused by the differential settlement at the bridge head and bridge expansion joints or the damage of the expansion device, such as figure 1 As shown, next to the river 1 is an abutment 2, and the connection between the abutment 2 and the road is a rammed earth filling 4, and a slab 3 is formed above the rammed earth 4. Above the lime soil rammed...

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Application Information

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IPC IPC(8): E02D3/12E01D19/06
Inventor 余闯蔡晓庆
Owner WENZHOU UNIVERSITY
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