局部地基软化消除地表曲率变形的研究

Study on foundation distortion elimination by means of local softening

本文通过对曲率变形引起建筑物附加作用力的分析 ,指出最大附加弯矩与基础和地基的接触长度有关 ,增加基础与地基的接触长度可以提高建筑物的抗变形能力 .分析了黄土特性及含水量对土的力学影响 ,并结合工程实例 ,说明通过注水增湿软化地基 ,利用基础与地基的共同作用原理可以消除地表曲率变形 .

The add ons force acting on the building base due to ground curvature distortion is analyzed. The maximum add ons moment of flexion is related to the contact length between foundation and ground base. The increase of length may enhance the resistance to distortion. Furthermore, the characteristic of loess and the influence of moisture content to soil mechanics are studied. On this basis, the method of distortion correction by means of wetting to form local softening is suggested.