Stability and deformation control structure of mountainside high-filled embankment and construction method

Abstract

The invention relates to a stability and deformation control structure of a mountainside high-filled embankment. The structure comprises a step type foam lightweight concrete guard wall arranged on the outer side of the embankment and excavation steps arranged in the interface of the embankment and a slope, wherein multiple groups of herringbone micropiles are arranged at the step type foam lightweight concrete guard wall and the excavation steps, and each herringbone micropile is formed by a vertical pile and an oblique pile through cross overlap joint of top beams at the tops; the vertical piles are steel tube concrete piles, and the oblique piles adopt crushed stone grouting piles; the inner facade of the step type foam lightweight concrete guard wall is poured into a step shape, each step is connected with a reinforcing mesh, one end of the reinforcing mesh is embedded into the step type foam lightweight concrete guard wall, and the other end of the reinforcing mesh is embedded into the embankment. The structure has the benefits as follows: the anti-sliding capability is high, and deformation of the interface of the newly-filled embankment and the slope is small; the drainage capability of the embankment is high, and the water insulation effect is good; the embankment retaining structure is high in stability; foam concrete is light in weight, and sedimentation is small.

Description

technical field [0001] The invention belongs to the field of embankment engineering, and in particular relates to a device and a construction method for preventing embankment slippage by human-shaped miniature piles, which are suitable for the construction of high-fill embankments near mountains, especially half-fill and half-fill high steep slopes with high requirements for embankment stability and safety. Digging embankment construction. Background technique [0002] The embankment near the mountain is a special subgrade. In order to save engineering investment and reduce the damage of natural hillside excavation during the route selection, it is generally distributed in the half-filled and half-dug road section and the section near the tunnel entrance. Because the foundation soil layer is in the soft-hard transition In this area, the embankment stability and settlement deformation control are quite technically difficult. A large number of surveys have found that the cons...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the traditional half-fill and half-excavation embankment construction with high fill near the mountain often results in uneven settlement and embankment slippage at the fill-excavation interface due to inadequate treatment measures for the fill-excavation interface, anti-overturning measures for the retaining wall, and subgrade drainage measures. Destruction, high retaining wall instability, slope seepage damage embankment and other problems, it is urgent to solve these problems through improved technology

Images