采用隔震技术后冷弯薄壁型钢结构房屋弹塑性时程分析
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摘要
结合某3层冷弯薄壁型钢结构,对采用隔震橡胶支座结构与原有结构进行弹塑性时程分析,并将两种结构加速度响应、位移响应及层间位移进行对比分析。结果表明:(1)进行弹性分析时,隔震结构的加速度响应比原有结构峰值提高约1%~29.9%;(2)进行弹塑性分析时,隔震结构加速度响应小于原有结构,最大减少约50%,且不同楼层隔震效率有所不同;(3)进行弹性、弹塑性分析,隔震结构位移响应大于原有结构位移响应。
Based on a three floors cold-formed steel structure,the elastic-plastic time history analysis is carried out for the structure with vibration isolation rubber bearings and the original structure. The acceleration response,displacement response and layer displacement of two structures are compared. The results showed that: in elastic analysis,the peak acceleration response of the isolated structure improves about 1% ~ 29. 9% than the original structure; in plastic analysis,the acceleration response of the isolated structure is less than the original structure,the maximum decrease is about 50%,and different isolation efficiencies depend on different floors; in elasticity and elastic-plastic analysis,the displacement response of isolated structure is larger than the original structure. So the isolation design should not be considered in cold-formed steel structure.
Based on a three floors cold-formed steel structure,the elastic-plastic time history analysis is carried out for the structure with vibration isolation rubber bearings and the original structure. The acceleration response,displacement response and layer displacement of two structures are compared. The results showed that: in elastic analysis,the peak acceleration response of the isolated structure improves about 1% ~ 29. 9% than the original structure; in plastic analysis,the acceleration response of the isolated structure is less than the original structure,the maximum decrease is about 50%,and different isolation efficiencies depend on different floors; in elasticity and elastic-plastic analysis,the displacement response of isolated structure is larger than the original structure. So the isolation design should not be considered in cold-formed steel structure.
引文
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[7]黄智光.底层冷弯薄壁型钢房屋抗震性能研究[D].西安:西安建筑科技大学,2011Huang Zhi-guang.Seismic Behaviors Study on Low-rise Cold-formed Thin-wall Steel Residential Buildings[D].Xi'an:Xi'an University of Architecture and Technology,2011(in Chinese)
[8]殷惠光,张跃峰.低层冷弯薄壁型钢建筑技术规程编制背景[J].工程建设与设计,2004(7):24~26Yin Hui-guang,Zhang Yue-feng.Background of Lower Cold-formed Steel Construction Technical Specification Preparation[J].Construction and Design,2004,(7):24~26(in Chinese)
[9]GB 50011-2010,建筑抗震设计规范[S]GB 50011-2010,Code for Seismic Design of Buildings[S](in Chinese)
[2]Skinner R I,Robinson W H,Mcrery G H.工程隔震概论[M].谢礼立等译.北京:地震出版社,1996Skinner R I,Robinson W H,Mcrery G H.Introduction to Engineering Isolation[M].Xie Lili Translation.Beijing:Earthquake Press,1996(in Chinese)
[3]姚勇,褚云朋,邓勇军,徐斌,郭小燕.低层冷弯薄壁型钢结构体系动静性能数值模拟[J].建筑结构,2011,41(2):41~44Yao Yong,Chu Yun-peng,Deng Yong-jun,Xu Bin,Guo Xiao-yan.Numerical Simulation of Low-level Coldformed Steel Structure Movement Performance[J].Building Structure,2011,41(2):41~44(in Chinese)
[4]沈祖炎,刘飞,李元齐.高强超薄壁冷弯型钢低层住宅抗震设计方法[J].建筑结构学报,2013,34(1):44~51Shen Zu-yan,Liu Fei,Li Yuan-qi.Cold-formed Steel Thin-walled High-strength Low-rise Residential Seismic Design Method[J].Journal of Building Structures,2013,34(1):44~51(in Chinese)
[5]Dan DUBINA.冷成型钢框架房屋的抗震性能[J].建筑钢结构进展,2007,9(1):1~17Dan DUBINA.Seismic Performance of Cold-formed Steel Frame Houses[J].Progress in Steel Building Structures,2007,9(1):1~17(in Chinese)
[6]Eray Baran,Cagatay Alica.Behavior of Cold-formed Steel Wall Panels under Monotonic Horizontal Loading[J].Journal of Constructional Steel Research,2012,79:1~8
[7]黄智光.底层冷弯薄壁型钢房屋抗震性能研究[D].西安:西安建筑科技大学,2011Huang Zhi-guang.Seismic Behaviors Study on Low-rise Cold-formed Thin-wall Steel Residential Buildings[D].Xi'an:Xi'an University of Architecture and Technology,2011(in Chinese)
[8]殷惠光,张跃峰.低层冷弯薄壁型钢建筑技术规程编制背景[J].工程建设与设计,2004(7):24~26Yin Hui-guang,Zhang Yue-feng.Background of Lower Cold-formed Steel Construction Technical Specification Preparation[J].Construction and Design,2004,(7):24~26(in Chinese)
[9]GB 50011-2010,建筑抗震设计规范[S]GB 50011-2010,Code for Seismic Design of Buildings[S](in Chinese)
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