不同地震烈度下结构破坏过程仿真  

Simulation Analysis for Collapse Response of Masonry Structures with Bottom Frame under Earthquake

作　　者：刘海卿[1,2] 吴秀峰[1] 刘东[1] 

机构地区：[1]辽宁工程技术大学建筑工程学院,辽宁阜新123000 [2]大连理工大学土木水利学院,辽宁大连116024

出　　处：《灾害学》2010年第B10期185-190,共6页Journal of Catastrophology

基　　金：中国博士后科学基金特别资助项目(200801385);中国博士后科学基金(20080430181);辽宁省"百千万人才工程"优秀人才资助计划项目(2008921034)

摘　　要：为了更好地研究地震烈度对结构破坏的影响及震害规律,运用LS-DYNA软件对Ⅷ度区和Ⅸ度区的底层框架砌体结构进行了由损伤至倒塌破坏的全过程的模拟,研究结果表明:在罕遇地震烈度情况下,Ⅸ度区的结构要比Ⅷ度区的结构出现破坏的时间早,并且要比Ⅷ度区的破坏严重。对比时程分析的结果,位移要滞后于加速度,但地震过程中结构的动力反应趋势大致相同。该成果反应了不同烈度下结构的地震反应特征,仿真结果和真实倒塌过程吻合较好。In order to research the impact of damage and the rule of the earthquake damage by seismic intensity,the whole process from the damage to the collapse of masonry structure with bottom frame in 8 degree and 9 degree is simulated using LS-DYNA software in this paper.The results show that the structure appears damage in the 9 degree is earlier than in the 8 degree in the case of rare intensity,and more serious than in 8 degree.Compare the results of time-history analysis in different seismic intensity,displacement lags behind the acceleration,but the trend of process of earthquake dynamic response of structures is the same.The results reflect the features of the response of structures in the different seismic intensity.The simulation results coincide with the real process of the collapse preferably.

关 键 词：底层框架砌体结构 地震烈度 倒塌过程 时程分析 

分 类 号：TU471.4[建筑科学—结构工程]