厚圆板与弹性地基的动力相互作用分析  

Dynamic interaction analysis between thick rounded plate and elastic foundation

作　　者：曹彩芹[1] 王春玲[1] 黄义[1] 赖金星[2] 

机构地区：[1]西安建筑科技大学理学院,陕西西安710055 [2]长安大学公路学院,陕西西安710064

出　　处：《西安建筑科技大学学报（自然科学版）》2005年第3期356-359,共4页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(59678003)

摘　　要：用半解析单元法分析了厚圆板基础与弹性地基的三维动力相互作用,提出了一种新的半解析位移函数.采用在水平两方向解析,竖向进行离散化的方法,使三维动力相互作用的问题简化为一维数值计算问题,大大减少了计算工作量.数值计算表明:在结构和地基相互作用分析中,地基的计算厚度可取为地基深度H与基础的半径R之比H/R大于10,地基的计算面积可取为地基计算面积与基础面积之比S1/S2大于30.In this paper, the three dimensional （3-D） interaction problem between thick rounded plate and elastic foundation is analyzed by the semi-analytic element method. Two sets of analytic function are used in the horizontal direction and the method of discreteness is used in vertical direction. Thus the 3-D interaction problem can be simplified into one dimensional numerical problem. The results show that the calculated thickness of elastic foundation is ten times as much as the radius of thick rounded plate and the calculated area of elastic foundation is thirty times as much as the area of thick rounded plate.

关 键 词：弹性地基 厚圆板 相互作用 半解析单元法 

分 类 号：TU348[建筑科学—结构工程]