摘要
根据可液化土层上土-地铁车站结构动力相互作用大型振动台模型试验结果,以软件ABAQUS为平台,将地基土-地铁车站结构体系视为平面应变问题,采用记忆型嵌套面黏塑性动力本构模型模拟土体的动力特性,采用混凝土动塑性损伤模型模拟车站结构混凝土的动力特性,建立了土-地铁车站结构非线性动力相互作用的有限元分析模型,对各种试验工况下地基土-地铁车站结构体系的地震反应进行了数值模拟,并与试验结果进行了对比,结果表明:数值模拟与振动台模型试验结果基本一致,体现出了相似的规律性,相互印证了计算分析的力学建模和振动台试验结果的正确性。
Based on the results of the large-size shaking table test of a subway station structure built in liquable site, considering the influence of the soil-structure nonlinear dynamic interaction by 2D finite element methods, the seismic responses of the soil-subway station structure system under different test conditions are analyzed by using ABAQUS software. In the analysis mode simulate the dynamic characteristics of so , dynamic visco-plastic memorial nested yield surface model is used to ls, and the plastic-damage model is used to simulate the dynamic characteristics of station concrete. And then, the simulation results and the shaking table test records are compared in detail in this paper. The results show that the simulation results and the law of seismic responses of the soil-subway station structure system are basically identical with those of the shaking table test. So that, the analysis results and the shaking table test results are proved to be correct.
出处
《地震工程与工程振动》
CSCD
北大核心
2008年第1期157-164,共8页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(50578076,50508002)
江苏省六大人才高峰资助计划(06-F-008)
江苏省高校自然科学基础研究项目(07KJB560040)
关键词
地铁车站结构
土-车站结构动力相互作用
地震反应
大型振动台试验
数值模拟
subway station structure
dynamic interaction of soil-station structure
seismic response
large-size shaking table test
numerical simulation
