Deformation self-adaptive drainage anti-slide pile for expansive soil side slope and construction method

Abstract

The invention discloses a deformation self-adaptive drainage anti-slide pile for an expansive soil side slope and a construction method. The deformation self-adaptive drainage anti-slide pile for theexpansive soil side slope comprises an embedment section, a water storage section and an elastic section. The embedment section comprises a first reinforced concrete precast pile and a first reinforced concrete retaining wall, and concrete is poured between the first reinforced concrete precast pile and the first reinforced concrete retaining wall. The water storage section comprises a second reinforced concrete precast pile and a second reinforced concrete retaining wall, and the space between the second reinforced concrete precast pile and the second reinforced concrete retaining wall is filled with rubble. The elastic section comprises a third reinforced concrete precast pile and a concrete pile, and the concrete pile is formed by a plurality of arc-shaped concrete precast parts in a splicing mode. The deformation self-adaptive drainage anti-slide pile is divided into the elastic section, the water storage section and the embedment section, expansion and contraction deformation of expansive soil in the process of experiencing the dry-wet cycle can be coordinated through deformation of the elastic section, generation of vertical tension cracks can be effectively avoided, and therefore infiltration of the rainwater on the surface layer is remarkably reduced, and the coordination control over expansion and contraction deformation of the expansive soil is achieved as the anti-slide capacity is brought into full play.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a deformation self-adaptive drainage anti-slide pile for expansive soil slopes and a construction method. Background technique [0002] Expansive soil is a kind of highly plastic clay mainly composed of strongly hydrophilic minerals, such as montmorillonite and illite. At the same time, it also has many cracks, super consolidation and strength attenuation. Due to its complex engineering characteristics and difficult to manage, it is often called "problem soil", which has caused many troubles to engineering construction. [0003] Unstable landslides often occur on soil slopes in expansive soil areas, such as embankments, road cuttings, and channel slopes. The instability mechanism of the expansive soil slope is as follows: when the expansive soil absorbs water and expands during rainfall, the internal structure of the soil block swells, which significantly ...

AI Technical Summary

Problems solved by technology

Conventional anti-slide piles cannot solve the problem of infiltration of expansive soil slopes, while various types of drainage anti-slide piles focus on the seepage and drainage of pore water inside the soil, and cannot effectively prevent rainwater seepage

Due to the above reasons, the existing types of anti-slide piles are difficult to effectively solve the instability problem of expansive soil slopes.

Images