摘要
有限元分析软件SAP2000中Pushover法,可以通过最大侧移、最大层间位移角、塑性铰状态、能力谱——需求谱曲线评估低层底部框架结构的抗震性能,同时与《建筑抗震设计标准》(GB/T50011-2010)中采用的反应谱法、时程分析法评估结果对比。研究结果表明:Pushover法与其他评估方法抗震分析结果数值差异较小,能够较为准确评估低层底部框架结构抗震性能。在罕遇地震作用下,通过能力谱——需求谱曲线可以分析结构的抗震性能。同时查看塑性铰的位置和阶段,找到结构薄弱环节,为低层底部框架结构的抗震评估及加固提供参考。
The Pushover method in the finite element analysis software SAP2000 can evaluate the seismic performance of low rise bottom frame structures through maximum lateral displacement,maximum inter story displacement angle,plastic hinge state,and capacity spectrum demand spectrum curve.At the same time,the evaluation results are compared with the response spectrum method and time history analysis method used in the"Seismic Design Standards for Buildings"(GB/T50011-2010).The research results indicate that the Pushover method has a relatively small numerical difference in seismic analysis results compared to other evaluation methods,and can accurately evaluate the seismic performance of low rise bottom frame structures.Under rare earthquake conditions,the seismic performance of structures can be analyzed through the ability spectrum demand spectrum curve.At the same time,check the position and stage of the plastic hinge,identify the weak links in the structure,and provide reference for the seismic assessment and reinforcement of the low rise bottom frame structure.
作者
周威
ZHOU Wei(Department of Management Engineering,Hebei Vocational College of Rail Transportation,Shijiazhuang 050051,China)
出处
《价值工程》
2025年第24期107-109,共3页
Value Engineering
基金
2024年度河北轨道运输职业技术学院课题“基于Pushover的低层底部框架结构抗震性能评估应用研究”(课题编号:GD-KYZ2024222)课题研究成果。
关键词
低层底部框架结构
PUSHOVER法
反应谱法
时程分析法
塑性铰
low rise masonry structure with bottom frame
Pushover
response-spectrum method
time-history method
plastic hinge
