无拉力双地基参数板在移动荷载作用下的动力响应  

Dynamic response problem about plate on tension-free double parameter foundation with moving load

作　　者：刘俊卿[1] 曹书文[1] 孙莹[1] 王炜[1] 

机构地区：[1]西安建筑科技大学理学院,西安710055

出　　处：《岩土力学》2006年第S2期993-996,共4页Rock and Soil Mechanics

基　　金：陕西省教育厅专项基金(No.05JK237)资助

摘　　要：求解了无拉力双参数地基上厚、薄板受任意移动荷载作用下的动力响应问题和板的脱离问题。从板.地基接触系统的分区广义势能泛函出发,通过建立和分析板单元区、地基单元区和连接板.地基的接触单元区的势能泛函,给出求解无拉力双参数地基板受任意移动荷载作用下的动力响应问题的分区广义协调元法。利用纽马克(Newmark)法经 MATLAB 编程叠代数值计算,验证了文中方法分析无拉力双参数地基板的动力响应问题是有效的。A dynamic response problem about thick-thin plate on tension-free double parameter foundation with random moving loads and problem about plate untouched foundation have been solved.From the generalized potential energy functional analysis of subsea of system about plate-foundation touching beginning,we can get subsea generalized harmonious element about solving dynamic response problem of plate on tension-free double parameter foundation with random moving loads through building and analyzing potential energy functional analysis of section about plate element,section of foundation element and section of plate-foundation element.We use method of Newmark and programme with MATLAB through iterativeness and get dynamic response value of every point in midst plane about moving loads in different instantaneous,different place.We also get the region and area of plate untouched foundation.Through numerical calculation,we can verify the method proposed,with which analyzing dynamic response problem about thick-thin plate on tension-free double parameter foundation,is effective.

关 键 词：无拉力 双参数地基 接触单元 广义协调元 动力响应 移动荷载 

分 类 号：TU470[建筑科学—结构工程]