摘要
为促进新型自复位延性剪切板支撑(简称SC-BDSP)钢框架结构在地震区的工程应用,控制其在地震作用下的弹塑性行为,将考虑高阶振型影响的基于位移的抗震设计方法应用于新型SC-BDSP钢框架结构.设计了目标延性系数为3的5层和10层SC-BDSP钢框架结构算例,基于循环Pushover分析方法评估了新型SC-BDSP钢框架结构的复位性能.通过对两个算例进行弹塑性时程分析,重点考察了新型SC-BDSP钢框架结构在罕遇地震作用下的最大楼层位移、最大楼层残余位移、最大层间位移角和层间残余位移角.分析结果表明:设计的新型SC-BDSP钢框架结构在罕遇地震作用下的最大层间位移角均略小于目标限值,震后的层间残余位移角小于0.5%,具有理想的震后复位能力,进一步证明了新型SC-BDSP钢框架结构基于位移的抗震设计方法的合理性.
In order to promote the engineering application of the self-centering braced ductile shear panel(SC-BDSP)steel frame structure in seismic region and the control of the nonlinear behavior of structure under rare earthquake,the paper proposed an application of the displacement-based seismic design method of the effect of higher modes into the SC-BDSP steel frame.Two structural illustrations of 5-story and 10-story with target ductility of 3 were designed,and the self-centering behavior of SC-BDSP steel frame was evaluated using the cyclic pushover analysis method.The maximum story displacement,maximum residual story displacement,maximum inter-story drift ratio and residual inter-story drift ratio of SC-BDSP steel frame under rare earth quakes were emphatically investigated through the nonlinear time-history analysis method.The results show that the maximum inter-story drift ratio of both structures under the rare earthquake is less than the target limit value,and the residual inter-story drift ratio after earth quakes is far less than 0.5%.The SC-BDSP steel frame has ideal self-centering behavior after earthquakes.The reliability of the displacement-based seismic design method of SC-BDSP steel frame is further proved.
作者
刘鎏
孙国华
王枭迪
LIU Liu;SUN Guohua;Wang Xiaodi(School of Civil Engineering,SUST,Suzhou 215011,China)
出处
《苏州科技大学学报（工程技术版）》
CAS
2020年第2期9-17,30,共10页
Journal of Suzhou University of Science and Technology（Engineering and Technology Edition）
基金
国家自然科学基金项目(51578355)
江苏省“青蓝工程”中青年学术带头人资助项目(2016)。
关键词
自复位延性剪切板支撑
基于位移的抗震设计
层间位移角
层间残余位移角
弹塑性时程分析
Self-centering ductile shear panel brace
displacement-based seismic design
inter-story drift ratio
residual inter-story drift ratio
nonlinear time-history analysis
