A slope reinforced retaining wall and its construction method

Abstract

The invention discloses a side slope reinforced retaining wall and a construction method thereof. The retaining wall includes a concrete cushion layer and a unit structure layer formed by sandwiching a backfill soil layer with a cement soil layer above it. The unit structure layer can be provided with multiple layers. The inclination angle of each unit structure layer is consistent with the slope slope. There are several hollow steel pipes pressed vertically downward into the soil at the concrete cushion. Hollow steel pipes with the same inclination angle are arranged in the unit structure layer. The two ends of the hollow steel pipes pass through Cement soil layer constraints are fixed. The basic structure of the retaining wall has a high bearing capacity and is not easy to soften and permeate. The unit structure layer is a stable structure with the characteristics of water resistance and not easy to soften. Therefore, the inclination angle of the retaining wall can be set steeper, which saves both filling costs and costs. The soil material of the retaining wall is completely taken from the excavated natural soil, which can save the engineering cost. The invention is especially suitable for the southern region where the slope reinforcement design site is limited and the perennial rainfall frequency is high.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, in particular to a slope reinforced retaining wall and a construction method thereof. Background technique [0002] In the slope treatment process, excavated soil materials and reinforcement materials are often used to combine them through different design schemes and construction methods to form a flexible reinforced soil retaining wall. This method is economical Cost, simple construction, fast construction speed and other advantages. At present, the most reinforced material in reinforced soil is mainly geogrid among synthetic reinforced materials. [0003] Due to the small section width of the conventional rigid gravity retaining wall, the anti-sliding friction resistance generated at the bottom is not enough, resulting in the overall sliding or toppling failure of the retaining wall, which makes the reinforced slope invalid. In addition, the cost is expensive, and there are no requirem...

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Problems solved by technology

[0003] Due to the small section width of the conventional rigid gravity retaining wall, the anti-sliding friction resistance generated at the bottom is not enough, resulting in the overall sliding or toppling failure of the retaining wall, which makes the reinforced slope invalid. In addition, the cost is expensive, and there are no requirements for the grade of the slope High engineering has caused economic waste; flexible gravity retaining walls such as conventional geogrid reinforcement often cause overall instability and damage to the foundation at the bottom due to water softening. The section width of the wall is relatively large, so it occupies a relatively wide site, and the inclination angle of the retaining wall is relatively slow, so that the surface of the retaining wall is subject to a large area of ​​rainwater erosion, which is prone to shallow collapse and damage of the retaining wall. The design site for slope reinforcement is limited and the perennial rainfall frequency The big southern region is obviously not suitable

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