岩土工程学报Issue(2)：242-249,8.DOI:10.11779/CJGE201502005
基于e-p曲线的软土地基非线性沉降的实用计算方法
Practical method for calculating nonlinear settlement of soft ground based one-p curve
摘要
Abstract
It is well recognized that the settlement caused by lateral deformation of soft ground cannot be ignored. In China's technical codes and specifications, the current methods for calculating the settlement of soft ground are the one-dimensional ones with compression curve under zero lateral strain condition. To reflect the settlement of soft soil caused by lateral deformation, the calculated results are multiplied by an empirical correction coefficient (1.1~1.7). However, the coefficient is greatly changeable and cannot be quantified clearly. Therefore, an effective and reliable method is needed for calculating the settlement caused by lateral deformation in engineering practice. In this paper, a simple and practical method for calculating nonlinear settlement of soft ground is established based on the concepts ofe–pcurve and nonlinear tangent modulusEt, which divides the foundation settlement into two parts. One is the compression settlement under zero lateral strain condition, which is calculated by the conventional layer-wise summation method withe–p curve; the other is the settlement caused by the lateral deformation, which is calculated by layer-wise summation method with nonlinear tangent modulusEt. The parameters of this method can all be obtained by using thee–p curve. To describe the feasibility of the proposed method, a comparison with the measured results and those by other methods such as finite element method is made through a project case.关键词
软土沉降/侧向变形/e-p曲线/切线模量/分层总和法Key words
soft ground settlement/lateral deformation/e-p curve/tangent modulus/layer-wise summation method分类
建筑与水利引用本文复制引用
杨光华,姚丽娜,姜燕,黄忠铭..基于e-p曲线的软土地基非线性沉降的实用计算方法[J].岩土工程学报,2015,(2):242-249,8.基金项目
国家自然科学基金项目（51378131）；广东省水利科技创新项目 （）
