时域内三维上下部相互作用结构的非线性分析

journal6 ›› 2005, Vol. 26 ›› Issue (2): 33-38.

时域内三维上下部相互作用结构的非线性分析

(1.同济大学结构工程与防灾研究所,上海 200092;2.湖南大学土木工程学院,湖南长沙 410082)

出版日期:2005-04-15 发布日期:2012-09-22

Dynamic Nonlinear Analysys of 3D Upper-Loeer Interactional Parts in Time Domain

(1.Research Institute of Structural Engineering and Disaster Reduction,Tongji University,Shanghai 200092,China;2.Department of Civil Engineering,Hunan University,Changsha 410082,China)

Online:2005-04-15 Published:2012-09-22
About author:XIONG Hui(1975-),male,was born in Changsha,Hunan Province,post-doctor of Tongji University;research area is foundation engineering design and soil-structure interaction.
Supported by:
Supported by the research fund for the doctoral program of higher education(98053207)

摘要/Abstract

摘要：通过对动力问题中粘弹性边界和桩土界面的非线性接触的合理描述，提出了一种能有效地开展层状地基中桩(群)-上部结构非线性动力相互作用分析的三维有限元模型.对地震作用下的（桩）基础结构共同作用进行了较全面的场动模拟，认为即使在非强震下，其桩-土间的滑移和开脱非线性共同作用对结构反应影响较大，按其间的一致粘合位移假设并不能有效地对桩承-结构体系的动力上、下部相互作用作出合理的评价.

关键词： SPS体系, 弹-阻边界, 桩-土非线性相互作用, 动力反应

Abstract: A simplified 3D finite-element model which can be availably applied to analyzing the dynamic nonlinear effect on pile-supported superstructure system in layered soil-field is presented.The real-time movement of the system is simulated based on the reasonable description about the behavior of contact on interface of pile-soil and the viscous-spring boundary under dynamic condition.It is indicated that the nonlinear characteristic of slide or debonding in pile-soil interface largely influence the structural response,even if subjected to non-strong shock.So the perfect bond hypothesis may not be suitable for estimating the dynamic behaviour of pile-bearing structures effectively.

Key words: SPS system, spring-damping boundary, interface nonlinearity, dynamic response

熊辉, 邹银生. 时域内三维上下部相互作用结构的非线性分析[J]. journal6, 2005, 26(2): 33-38.

XIONG Hui, ZOU Yin-Sheng. Dynamic Nonlinear Analysys of 3D Upper-Loeer Interactional Parts in Time Domain[J]. journal6, 2005, 26(2): 33-38.