圆形板基础下地基强度和变形非线性性状研究  

Nonlinear finite element analysis of strength and settlement of soft soil foudation under circular plank

作　　者：应永法[1] 泮威风[2] 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211 [2]宁波大学建筑设计研究院,浙江宁波315211

出　　处：《岩土力学》2002年第2期250-256,共7页Rock and Soil Mechanics

摘　　要：采用Drucker弹塑性模型、SAP91非线性有限元程序、ViziCAD微机有限元前后处理系统计算、分析了轴对称问题,即圆形板情况下,基础板几何尺寸、基础刚度、边界条件、基础埋深对基础沉降量、塑性区开展的影响,结果表明基础沉降随基础几何尺寸增大而增大,随基础刚度、埋深的增大而减小;基础刚度、几何尺寸、埋深的加大都能提高地基承载力。By using the Drucker elastopeastic model,SAP91nonlinear finite element analysis programm,etc.,for the soft soil foundation under the circular plank,the effects of the foundation size,foundation stiffness and embedded depth of the foundation upon the settlement and plasticity development of the foundation are analyzed and calculated.The conclusions are as follows:the foundation settlement increases with increasing of foundation geometrical size,decreases with increasing of foundation stiffness and embedded depth of foundation;the increasing of foundation stiffness,the increasing of foundation geometrical size and the increasing of embedded depth of foundation all improve the bearing capacity of foundation soil.

关 键 词：非线性 有限元 基础沉降 基础几何尺寸 基础刚度 基础埋深 变形 圆形板基础 

分 类 号：TU47[建筑科学—结构工程] TU433[建筑科学—土工工程]