地基变形计算的修正Flamant解  

MODIFIED FLAMANT'S SOLUTION FOR FOUNDATION DEFORMATION

作　　者：王华宁[1] 宋飞[1] 刘芳[2] 

机构地区：[1]同济大学航空航天与力学学院,上海200092 [2]同济大学土木工程学院地下建筑与工程系,上海200092

出　　处：《力学与实践》2017年第3期274-279,共6页Mechanics in Engineering

基　　金：国家自然科学基金(11572228);同济大学2015-2016年教学改革研究与建设资助项目

摘　　要：针对地表分布载荷作用下地基变形的半平面问题,利用对称化方法对Flamant位移解答进行修正,得到有限深度底部光滑刚性支撑的地基位移的精确解.该解与相同条件下的有限元数值计算结果基本一致.修正解与原解的对比表明,两者差异较大;但当基点距离载荷较近时,两者所得到的地表附近的相对沉陷分布形式和大小差别不大.The Flamant solution is improved through a symmetric treatment to obtain accurate displacemenˉelds of a rigid foundation with a frictionless base subjected to uniformly distributed loads.The modiˉed version of the Flamant solution gives results in good agreement with the results obtained by theˉnite element simulation.It is shown that the original and modiˉed Flamant solutions provide di?erent horizontal and vertical displacements.However,both solutions give similar magnitudes and spatial patterns of the relative settlements when the zero-displacement-point is near the region where the loads are applied.

关 键 词：地基沉陷 半无限平面 Flamant解答 

分 类 号：TU457[建筑科学—岩土工程]