【作者】 于志强； 马福；

【Author】 YU Zhiqiang;MA Fu;College of Civil Engineering,Taiyuan University of Technology;

【机构】 太原理工大学土木工程学院；

【摘要】 楼板在现浇钢筋混凝土框架结构的抗震性能中起着非常重要的辅助作用。以一栋地上6层现浇钢筋混凝土框架结构为研究对象,研究了不同的楼板开洞率对结构整体抗震性能的影响。采用Etabs有限元分析软件对工程实例及现浇楼板进行建模,对模型进行模态分析、反应谱分析、静力弹塑性及动力弹塑性分析。结果表明,不同的楼板开洞率对于结构的抗震性能影响程度不同。当开洞率在30%以下时,单层楼板开洞对结构弹性阶段(小震)下的抗震性能影响较小;当开洞率在20%以下时,单层楼板开洞对结构弹塑性阶段(大震)下的抗震性能影响较小。更多还原

【Abstract】 Floor slab plays an important role in the aseismic performance of reinforced concrete frame structure.In this paper,a 6-story reinforced concrete frame structure is taken as the research object,and the influence of different floor opening ratio on seismic performance of the structure is studied.The ETABS software is used to model and simulate the engineering example and cast-in-place floor slab.The modal analysis,response spectrum analysis,static elastoplastic analysis(pushover analysis) and dynamic elastoplastic analysis(nonlinear time history analysis) are carried out for the model.The results show that different floor opening ratio has different influence on the seismic performance of the structure.When the opening rate is less than 30%,the impact of single floor opening on the elastic seismic performance is small;when the opening rate is less than 20%,the impact of single floor opening on the elastic-plastic seismic performance is small.更多还原