Supporting structure for rock roadbed heightening and construction method

A technology for retaining structures and subgrades, which is applied in basic structure engineering, underwater structures, roads, etc., can solve the problem of affecting the stability and normal use of cantilever retaining walls, and cannot guarantee the overall stability of heightened structures. Problems such as external inclination and deformation of the vertical wall of the retaining wall are achieved to ensure stability and normal use, improve self-supporting capacity, and reduce cost
CN109989423AInactive Publication Date: 2019-07-09DALIAN JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN JIAOTONG UNIVERSITY
Publication Date
2019-07-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a supporting structure for rock roadbed heightening and a construction method. The structure comprises a rock roadbed, prestressed anchor cables, a connecting rod, a wall panel, a connecting rod and geogrids. The prestressed anchor cables are obliquely arranged in the rock roadbed, the wall panel is arranged at the top of a cantilever type retaining wall and connected withthe cantilever type retaining wall through the connecting rod; a plurality of layers of the geogrids and fillers are arranged on the rock roadbed on the inner side of the wall panel to form a heightened roadbed. The shear resistance and rigidity of the cantilever type retaining wall can be effectively improved by installing the prestressed anchor cables, so that the deformation of the vertical wall is effectively reduced, and the stability and the normal use of the cantilever type retaining wall are ensured. The mounting of the wall panel can effectively improve the use height of the cantilever type retaining wall, and can ensure the stability of the plurality of layers of the geogrids. The prestressed anchor cables and the geogrids belong to flexible structures and are high in shock resistance, an existing cantilever type retaining wall is not dismounted, and thus the manufacturing cost is reduced.
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Description

technical field

[0001] The invention relates to road construction technology, in particular to a retaining structure and construction method for raising rocky roadbed. Background technique

[0002] In the process of road reconstruction, it is difficult to avoid the situation that the elevation of the road surface increases, and the original supporting structure must be raised. The cantilever retaining wall is one of the commonly used retaining structures for fill slopes. The applicable height of the cantilever retaining wall should not exceed 6m. In actual engineering, the following problems may occur:

[0003] 1. The design height of the existing cantilever retaining wall is not enough and needs to be increased.

[0004] 2. Heightening the cantilever retaining wall will increase the earth pressure at the bottom of the retaining wall, which will cause the wall to overturn, crack and other damage.

[0005] 3. The vertical wall of the cantilever retaining wall will produce o...

Claims

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