短肢剪力墙结构在强震作用下竖向倒塌模拟分析
李奉阁1，王磊1，2
（1.内蒙古科技大学建筑与土木工程学院，内蒙古包头014010 2.河北工程大学，河北邯郸 056038）
关键词：短肢剪力墙；倒塌；Opensees；数值分析
中图分类号: TU398+.2 文献标识码: A
摘要：为了研究短肢剪力墙结构在强震作用下竖向倒塌全过程，采用Opensees程序对具有较多短肢剪力墙的剪力墙结构进行了倒塌过程的模拟。通过从属节点建模对失效构件进行约束释放处理，且基于Opensees中的Remove命令对严重失效脱落单元进行杀死处理。分析了具有较多短肢剪力墙的剪力墙结构的倒塌特性，并对该高层结构在倒三角荷载作用下的破坏模式和倒塌过程进行了模拟。研究结果表明,通过倒塌模拟分析可以确定短肢剪力墙结构倒塌过程中构件失效顺序；结构底部竖向构件破坏引起结构连续倒塌，应对底部竖向构件进行加强设计。
Study on Vertical Collapse of Short PierShear Wall Structure under Severe Earthquake
LIFeng-ge1 , Wang Lei1，2
(1.Architecture and Civil Engineering School， Inner Mongolia University of Science and Technology，Baotou 014010，China. 2.Hebei University of Engineering，Handan 056038，China)
Keywords: short pier shear wall; collapse; Opensees ; numerical analysis
Abstract:Inorder to study the vertical collapse of the short pier shear wall structure
undersevere earthquake, Opensees program was used to simulate the collapse processof the pier wall structure with more short pier shear walls. The releaseprocessing of bind on failure parts was carried out by using the slave nodemodeling that serious failure peeling units are killed based on the Removecommand in the Opensees . The pier wall with more short pier shear walls possessing the collapsed feature wasanalysed, while simulating the process collapse and the failure mode of high-risestructure under the inverted triangle load. The results prove that the sequenceof components failures can be determined through collapse simulation analysisin the collapse of the pier wall structure;the destruction ofvertical members in the base of building causes progressive collapse, so thevertical members should be designed strongly.