考虑薄层连接单元的桩-土-结构动力有限元分析

英文篇名：Dynamic Finite-Element Analysis of Pile-Soil-Structure System Considering Thin-Layer Contact Element
中文刊名：湖南大学学报(自然科学版)
英文刊名：Journal of Hunan University (Natural Science)
作者：熊辉 ; 邹银生 ; 田军
英文作者：XIONG Hui ; ZOU Yin-sheng ; TIAN Jun(College of Civil Engineering ; Hunan Univ ; Changsha410082 ; China)
中文关键词：动力反应 ; 桩-土-结构共同作用 ; 薄层连接单元
英文关键词：dynamic response ; pile-soil-superstructure interaction ; thin-layer contact element
出版日期：2004-02-25
机构：湖南大学土木工程学院,湖南大学土木工程学院,湖南大学土木工程学院湖南长沙　410082 ,湖南长沙　410082 ,湖南长沙　410082
年：2004
期：01
出版单位：湖南大学学报(自然科学版)

摘要

考虑土和结构物的动力相互作用时,两者之间的接触状态必然对基础和结构反应产生影响.通过假定桩土接触面薄层单元本构关系特征,人为地在两种不同材料交界面上引入一种位移间断面,并采用有限元方法将其位移及刚度反应到桩土子结构中.文中给出了桩土上部结构动力有限元平衡方程.计算分析表明,考虑薄层单元接触效应与假定桩土位移一致协调条件下所得的动力反应结果是有一定差异的.
The response of foundation and structure is indispensably influenced by the contacting status between soil and structure, if considering their dynamic reaction. So this paper proposed a discontinuous displacement model on the interface between two different materials, after postulating the constitutive relation in the thin-layer elements of the contacting surface. The dynamic equilibrium equations of pile-soil-structure system were obtained by adding the contribution of the interface elements to those of the pile-soil elements. The calculation shows that the system′s dynamic response based on the interface effect have some difference from those based on the consistent displacement on the pile-soil′s interface.

引文

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