不同跨度对钢筋混凝土框架结构抗震性能的影响  

INFLUENCE OF DIFFERENT SPANS ON SEISMIC PERFORMANCE OF REINFORCED CONCRETE FRAME STRUCTURES

作　　者：陈冠君 刘文锋[1,2] 张华 CHEN Guanjun;LIU Wenfeng;ZHANG Hua(School of Civil Engineering,Qingdao University of Technology,Shandong Qingdao 266033,China;Shandong Green Building Digital Construction Technology Engineering Laboratory,Shandong Qingdao 266033,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]山东省绿色建筑数字化建造技术工程实验室,山东青岛266033

出　　处：《低温建筑技术》2020年第11期50-53,65,共5页Low Temperature Architecture Technology

摘　　要：为研究结构跨度变化对框架结构抗震性能的影响。文中以五层框架结构为研究对象,并对结构设置三种跨度变量,进行弹塑性动力时程分析,以结构的顶点位移、基底剪力、层间位移角等为结构抗震响应指标。结果表明在四级设防水准下,跨度减小和增大结构弹塑性变形均较基准机构呈增大趋势,随着跨度的增大,结构弹塑性承载力较基准结构呈减小趋势。跨度变化后结构最大层间位移角均满足四级设防水准下抗震规范要求。In order to study the influence of structural span variation on the seismic performance of frame structure,the elastic-plastic dynamic time history analysis with three span variables was carried out in afive-story frame structure as the research object.The top displacement,the base shear force,and the inter story displacement angle of the structure are taken as the seismic response indexes.The results show that the elastic-plastic deformation of the structure increases with the decrease and increase of the span under the level 4 fortification level.With the increase of the span,the elastic-plastic bearing capacity of the structure decreases compared with the reference structure.In addition,the maximum inter story displacement angle of the structure meets the requirements of the seismic code under the level 4 fortification level after the span changes.

关 键 词：结构跨度变化 动力时程分析 抗震响应指标 

分 类 号：TU352.1[建筑科学—结构工程]