切线模量法计算筏板基础沉降的分块网格尺寸分析  

Analysis of Block Mesh Size for Calculating Raft Foundation Settlement Using Tangent Modulus Method

作　　者：廖汉阳 杨光华[1,2,3] 姜燕 李志云[2,3] LIAO Hanyang;YANG Guanghua;JIANG Yan;LI Zhiyun(Department of Civil Engineering,South China University of Technology,Guangzhou 510640,China;Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510635,China;The Geotechnical Engineering Technology Center of Guangdong Province,Guangzhou 510635,China)

机构地区：[1]华南理工大学土木与交通学院,广州510640 [2]广东省水利水电科学研究院,广州510635 [3]广东省岩土工程技术研究中心,广州510635

出　　处：《广东水利水电》2024年第6期1-6,共6页Guangdong Water Resources and Hydropower

基　　金：国家自然科学基金项目(编号:52078143)。

摘　　要：切线模量法计算筏板基础沉降时需对板底土层在水平面上进行分块网格的划分,而在实际应用之中,网格尺寸与基础形状、基础尺寸以及人为的选取都有关系,为了探究在实际应用之中网格尺寸大小对于沉降计算结果的影响,该文针对一均匀深厚土层上的矩形筏板基础,将筏板分别视为柔性板与弹性板进行沉降计算分析,得到了网格尺寸对于沉降结果的影响在柔性板时可以忽略,在弹性板且荷载处于正常使用范围之内时可以忽略的结论,说明了切线模量法计算筏板基础沉降是一种较为实用的方法。When using the tangent modulus method to calculate the settlement of raft foundations,it is necessary to divide the soil layer at the bottom of the raft into block meshes on the horizontal plane.However,in practical applications,the mesh size is related to the shape of the foundation,the size of the foundation,and human selection.In order to explore the impact of mesh size on the settlement calculation results in practical applications,this article focuses on a rectangular raft foundation on a uniform and deep soil layer,treating the raft as a flexible plate and an elastic plate for settlement calculation analysis.It is concluded that the influence of mesh size on the settlement results can be ignored in flexible plates,and can be ignored in elastic plates with loads within the normal range of use.This indicates that the tangent modulus method is a practical method for calculating the settlement of raft foundations.

关 键 词：筏板基础 切线模量法 网格尺寸 沉降计算 

分 类 号：TU470[建筑科学—结构工程]