膨胀土地区桩板式挡土墙计算方法研究

摘要:

膨胀土是一种高塑性黏土，具有吸水膨胀、失水收缩和反复胀缩变形、浸水承载力衰减、干缩裂隙发育等特性，性质极不稳定。本文以陕西安康某市政桩板式挡土墙工程为例对膨胀土地区桩板式挡土墙设计计算中涉及的膨胀土抗剪强度折减、水平膨胀力、剩余下滑力、桩板墙结构验算等问题进行了计算研究，为同类工程的设计与计算提供借鉴。

Abstract:

Expansive soil is a kind of high plastic clay, which has the characteristics of water absorption swelling, water loss shrinkage and repeated swelling-shrinkage deformation, attenuation of water immersion bearing capacity, development of dry shrinkage cracks and so on. Taking a municipal engineering pile-plank retaining wall project in Ankang City, Shaanxi Province as an example, this paper calculates and studies the problems involved in the design and calculation of pile-plank retaining wall in expansive soil area, such as shear strength reduction of expansive soil, horizontal swelling force, residual sliding force, pile-plank retaining wall structure checking calculation and so on, so as to provide reference for the design and calculation of similar projects.