Pre-stressed anchor cable-reinforced earth retaining wall combined supporting and retaining structure and construction method thereof

Abstract

The invention discloses a pre-stressed anchor cable-reinforced earth retaining wall combined supporting and retaining structure and a construction method thereof, and belongs to the technical field of roadbed supporting. The structure comprises a panel assembly, reinforced soil and a pre-stressed anchor cable; the panel assembly comprises a foundation, a breast board and rib columns, wherein the breast board and the rib columns are arranged on the foundation; the reinforced soil comprises filling soil and a plurality of geogrids arranged from top to bottom, the space between the panel assembly and the slope surface is filled with the filling soil, one end of each geogrid is connected with the soil retaining plate, and the other end of each geogrid extends to the slope surface; the pre-stressed anchor cable is connected between the panel assembly and the slope, a free section in the middle of the pre-stressed anchor cable inclines downwards from the panel assembly to the slope at an inclination angle of 2-4 degrees and does not intersect with the geogrid, and pre-stress of the anchor cable is transmitted to filling lateral pressure through the rib columns and the breast boards; the pre-stressed anchor cables are introduced into the reinforced earth retaining wall of the mountain slope section, and the problem of differential settlement of a roadbed under the long-term load effect is solved.

Description

technical field [0001] The invention belongs to the technical field of roadbed support, and in particular relates to a prestressed anchor cable-reinforced soil retaining wall combined support structure and a construction method in a slope section of a mountainous area. Background technique [0002] In the construction process of high-grade highway infrastructure in the mountainous areas of central and western China, due to the narrow terrain, low foundation bearing capacity, difficult foundation construction, and high construction difficulty and high cost, the traditional gravity retaining wall has been abandoned. As a light retaining structure, the reinforced earth retaining wall has good stress and deformation characteristics, saves land occupation and cost, has a short construction period, and is environmentally friendly and beautiful. It has gradually become a more feasible solution for subgrade filling in mountainous slope areas. However, limited by the complex environm...

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Problems solved by technology

[0006] The present invention overcomes the deficiencies of the prior art, and proposes a prestressed anchor cable-reinforced earth retaining wall combined retaining structure and its construction method to reduce the risk of the reinforced earth retaining wall sliding down the slope and reduce the reinforcement The soil retaining wall is affected by the complex environment and the long-term effect of traffic loads. It makes up for the short board due to the limited length of the geogrid layout due to space constraints, and at the same time does not destroy the continuity of the original reinforced soil retaining wall geogrid, resulting in construction materials. waste and unknown risks

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