摘要
为确保大高宽比高层剪力墙结构的抗震安全,应对该结构进行抗震性能分析。采用弹塑性有限元理论,利用Etabs、盈建科等软件建立有限元模型,对层间位移角、顶点位移、顶点加速度、基底剪力等指标对结构内力的影响进行分析。同时,比较多遇地震与罕遇地震作用下的剪力墙损伤分析,结果表明:罕遇地震下基底剪力会增大近5倍,应适当增加底部加强区剪力墙配筋率以提高结构抗震性能;罕遇地震下,结构顶点位移、顶点加速度及底部弯矩的影响较大,对结构层间位移角的影响较小;此外,大高宽比剪力墙结构底部容易受到破坏。分析结果可为大高宽比高层剪力墙结构的抗震性能分析提供参考。
In order to ensure the seismic safety of high-rise shear wall structures with high aspect ratio,the seismic performance analysis should be carried out.In this paper,elastoplastic finite element theory is used to establish a finite element model with software such as Etabs and Yingjianke.The influence of base shear,vertex displacement,interlayer displacement Angle and vertex acceleration on the structure is analyzed.At the same time,the damage analysis of shear wall under frequent and rare earthquakes is compared.The results show that the base shear will increase nearly 5 times under rare earthquakes.The reinforcement ratio of shear wall at the bottom reinforcement area should be increased appropriately to improve the seismic performance of the structure.In rare earthquakes,the effect of vertex displacement,vertex acceleration and bottom bending moment on the structure is greater,but the effect on the interlayer displacement Angle is less.In addition,the bottom of shear wall structure with high ratio of height to width is easy to be damaged.The results of this paper can provide reference for seismic performance analysis of high-rise shear wall structures with high height to width ratio.
作者
田为
方敏
王兴园
高源
TIAN Wei;FANG Min;WANG Xingyuan;GAO Yuan(Wuhan Construction Engineering Group Co.,Ltd.,Wuhan 430023,China)
出处
《建筑结构》
北大核心
2023年第S01期598-602,共5页
Building Structure
基金
武汉建工集团股份有限公司项目基金编号(2022WHJG004)
关键词
罕遇地震
抗震性能
高层剪力墙结构
高宽比
rare earthquake
seismic performance
high-rise shear wall structure
aspect ratio
