滩海桶形基础平台整体三维弹塑性有限元地震动力响应分析  

3-D Elasto-Plastic Seismic Time-History Response of the Platform with Bucket Foundations in Shallow Water

作　　者：张伟[1] 周锡礽[1] 余建星[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《海洋技术》2004年第4期69-74,80,共7页Ocean Technology

基　　金：国家自然科学基金资助项目(59909005)

摘　　要：在经典的D-P本构模型基础上,通过改进其屈服准则,引入硬化曲线建立了改进的D-P模型,使该本构模型能很好地模拟大港滩海软土的应力应变关系。利用MARC程序作为平台,建立了滩海桶形基础平台整体有限元动力分析模型,并对我国第一座桶形基础平台进行了三维弹塑性地震时程动力分析,得到了一些很有用的结论。On the basis of classical D-P constitutive model work hardening relation is introduced to establish an modified elasto-plastic model so that it can simulate the stress-strain relation of soft clay from shallow water in Dagang. By using MARC program, the dynamic finite element analytic model of the first platform with bucket foundation in China is established and its elasto-plastic seismic time-history response is calculated. Several available conclusions are obtained.

关 键 词：桶形基础 本构模型 地震动力 平台 三维弹塑性有限元 软土 应力应变关系 滩海 模拟 动力分析 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] TU471[天文地球—海洋科学]