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移动荷载作用下土-结构共同作用的积分方程法分析 预览 被引量:1

Integral equations methods for dynamic interactions between soil and superstructure under a moving point load
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摘要 根据饱和土体Biot理论,采用薄板理论与最小势能及子结构法,将土一结构作为整体系统,利用接触边界处位移连续、应力平衡条件,建立了移动荷栽作用下饱和土体上部结构振动的积分方程,然后再利用Fourier逆变换,得到土体、结构及基础筏板在时间一空间域内的位移、应力,并利用文中方法进行了算例分析. Based on Biot' s theory, the minimum potential energy principle, as well as the thin plate theory,the superstructure, raft and soil are assumed to be a whole system according to the substructure method. The system must satisfy the continuity conditions at the interface between the superstructure,raft and soil surface. Given the compatibility condition that the vertical displacement of the interface between the raft and the saturated soil should be equal,the integral equation accounting for the vertical coupling of the superstructure-raft system with the saturated soil subject to a moving load is constructed. Using the nu- merical inverse transform technique, the paper obtains the forces and displacements of the saturated soil and superstructure in the space domain. Some numerical results are presented in addition to demonstrate the capacity of the proposed model.
作者 徐满清 汪小布 徐斌 于华群 黄晓强 XU Manqing, WANG Xiaobu, XU Bin, YU Huaqiang, HUANG Xiaoqiang ( School of Civil and Architectural Engineering, Nanchang Institute of Technology, Nanchang 330099, China)
出处 《南昌工程学院学报》 CAS 2014年第1期64-69,共6页 Journal of Nanchang Institute of Technology
基金 国家自然科学基金(50969007,51269007) 江西省自然科学基金重点项目(20133ACB20006) 2013年度国家级大学生创新创业教育专项资金
关键词 积分方程 BIOT理论 子结构法 integral equations Biot' s theory substructure method
作者简介 徐满清(1975-),女,博士生,副教授,mq418@163.com.
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