钢结构跃层加层的地震反应分析
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摘要
根据现行的《建筑抗震设计规范》(GB 50011—2001),结合2个工程实例,通过建立空间三维有限元模型分析了钢结构跃层加层结构的动力特性,并分别用振型分解反应谱法和时程分析法对分离式和整体式外套框架跃层加层结构进行了地震反应分析,比较了2种结构的地震响应和抗震性能。结果表明:整体式跃层加层结构所受地震力较大,层间剪力峰值持续时间较长,衰减较慢。所得结论可为具有类似加层结构的抗震设计提供参考。
According to the actual Code for Seismic Design of Building(GB 50011—2001) and combining with two engineering cases,the dynamic characteristics of adding extra-floors spanning existing building with steel structure were analyzed through making 3-D finite element model,and the seismic responses of the separated and integral coat framing were obtained by using response spectrum method and time history analysis method of vibration mode.The results show that the seismic force of adding extra-floors spanning existing building with steel structure is bigger,and the time of top values of shearing force between layers is longer,and the reducing is slower.The seismic responses and seismic behaviors of two kinds of structures were compared.The conclusion can be served as the references of such structure design.
According to the actual Code for Seismic Design of Building(GB 50011—2001) and combining with two engineering cases,the dynamic characteristics of adding extra-floors spanning existing building with steel structure were analyzed through making 3-D finite element model,and the seismic responses of the separated and integral coat framing were obtained by using response spectrum method and time history analysis method of vibration mode.The results show that the seismic force of adding extra-floors spanning existing building with steel structure is bigger,and the time of top values of shearing force between layers is longer,and the reducing is slower.The seismic responses and seismic behaviors of two kinds of structures were compared.The conclusion can be served as the references of such structure design.
引文
[1]GB 50011—2001,建筑抗震设计规范[S].GB 50011—2001,Code for Seismic Design of Building[S].
[2]刘大海,杨翠如,钟锡根.高层建筑抗震设计[M].北京:中国建筑工业出版社,1993.LIU Da-hai,YANG Cui-ru,ZHONG Xi-gen.TallBuilding Seismic Design[M].Beijing:China Architec-ture&Building Press,1993.
[3]郭继武,郭瑶.房屋抗震设计[M].北京:清华大学出版社,2003.GUO Ji-wu,GUO Yao.Building Seismic Design[M].Beijing:Tsinghua University Press,2003.
[4]宋锋,王元清,石永久,等.钢结构跃层加层技术及其工程应用[J].工业建筑,2004,34(10):56-58.SONG Feng,WANG Yuan-qing,SHI Yong-jiu,et al.The Technique of Adding Extra-floors SpanningExisting Building and Its Application[J].IndustrialConstruction,2004,34(10):56-58.
[5]刘晶波,陈鸣,刘祥庆,等.低层冷弯薄壁型钢结构住宅整体性能分析[J].建筑科学与工程学报,2008,25(4):6-12.LIU Jing-bo,CHEN Ming,LIU Xiang-qing,et al.In-tegral Behavior Analysis of Cold-formed Thin-walledSteel Framing System of Low-rise Residential Build-ings[J].Journal of Architecture and Civil Engineer-ing,2008,25(4):6-12.
[6]邓长根,吴建华,甘东华.钢结构失稳监测方法和失稳监控部件研究[J].建筑科学与工程学报,2006,23(3):21-25.DENG Chang-gen,WU Jian-hua,GAN Dong-hua.Re-search on Instability Monitoring Methods and In-stability Monitoring Components for Steel Structures[J].Journal of Architecture and Civil Engineering,2006,23(3):21-25.
[7]许红胜,周绪红,刘永健.钢结构交错桁架体系在强震作用下的破坏模式[J].建筑科学与工程学报,2007,24(2):63-67.XU Hong-sheng,ZHOU Xu-hong,LIU Yong-jian.Failure Mode of Staggered Truss System of SteelStructure Under Severe Earthquake[J].Journal ofArchitecture and Civil Engineering,2007,24(2):63-67.
[8]郑宏,杨飞颖,张维刚.钢板深梁屈曲分析[J].建筑科学与工程学报,2007,24(3):31-35.ZHENG Hong,YANG Fei-ying,ZHANG Wei-gang.Buckling Analysis on Steel Plate Deep Beam[J].Jour-nal of Architecture and Civil Engineering,2007,24(3):31-35.
[9]徐爱敏,陈衡治,谢旭.结构极限承载力计算方法及其收敛性[J].中国公路学报,2006,19(5):65-70.XU Ai-min,CHEN Heng-zhi,XIE Xu.CalculationMethod for Ultimate Bearing Capacity of Structureand Its Convergence[J].China Journal of Highwayand Transport,2006,19(5):65-70.
[10]沈蒲生,方辉,夏心红,等.考虑施工过程和收缩徐变的框架结构简化分析[J].建筑科学与工程学报,2006,23(2):41-45.SHEN Pu-sheng,FANG Hui,XIA Xin-hong,et al.Simplified Analysis for Frame Structure ConsideringConstruction Process,Shrinkage and Creep[J].Jour-nal of Architecture and Civil Engineering,2006,23(2):41-45.
[11]周绪红,李艳敏,石宇,等.竖向荷载作用下冷弯薄壁型钢墙架柱的承载力[J].建筑科学与工程学报,2006,23(3):7-13.ZHOU Xu-hong,LI Yan-min,SHI Yu,et al.BearingCapacity of Cold-formed Thin-walled Steel Wall StudUnder Vertical Load[J].Journal of Architecture andCivil Engineering,2006,23(3):7-13.
[2]刘大海,杨翠如,钟锡根.高层建筑抗震设计[M].北京:中国建筑工业出版社,1993.LIU Da-hai,YANG Cui-ru,ZHONG Xi-gen.TallBuilding Seismic Design[M].Beijing:China Architec-ture&Building Press,1993.
[3]郭继武,郭瑶.房屋抗震设计[M].北京:清华大学出版社,2003.GUO Ji-wu,GUO Yao.Building Seismic Design[M].Beijing:Tsinghua University Press,2003.
[4]宋锋,王元清,石永久,等.钢结构跃层加层技术及其工程应用[J].工业建筑,2004,34(10):56-58.SONG Feng,WANG Yuan-qing,SHI Yong-jiu,et al.The Technique of Adding Extra-floors SpanningExisting Building and Its Application[J].IndustrialConstruction,2004,34(10):56-58.
[5]刘晶波,陈鸣,刘祥庆,等.低层冷弯薄壁型钢结构住宅整体性能分析[J].建筑科学与工程学报,2008,25(4):6-12.LIU Jing-bo,CHEN Ming,LIU Xiang-qing,et al.In-tegral Behavior Analysis of Cold-formed Thin-walledSteel Framing System of Low-rise Residential Build-ings[J].Journal of Architecture and Civil Engineer-ing,2008,25(4):6-12.
[6]邓长根,吴建华,甘东华.钢结构失稳监测方法和失稳监控部件研究[J].建筑科学与工程学报,2006,23(3):21-25.DENG Chang-gen,WU Jian-hua,GAN Dong-hua.Re-search on Instability Monitoring Methods and In-stability Monitoring Components for Steel Structures[J].Journal of Architecture and Civil Engineering,2006,23(3):21-25.
[7]许红胜,周绪红,刘永健.钢结构交错桁架体系在强震作用下的破坏模式[J].建筑科学与工程学报,2007,24(2):63-67.XU Hong-sheng,ZHOU Xu-hong,LIU Yong-jian.Failure Mode of Staggered Truss System of SteelStructure Under Severe Earthquake[J].Journal ofArchitecture and Civil Engineering,2007,24(2):63-67.
[8]郑宏,杨飞颖,张维刚.钢板深梁屈曲分析[J].建筑科学与工程学报,2007,24(3):31-35.ZHENG Hong,YANG Fei-ying,ZHANG Wei-gang.Buckling Analysis on Steel Plate Deep Beam[J].Jour-nal of Architecture and Civil Engineering,2007,24(3):31-35.
[9]徐爱敏,陈衡治,谢旭.结构极限承载力计算方法及其收敛性[J].中国公路学报,2006,19(5):65-70.XU Ai-min,CHEN Heng-zhi,XIE Xu.CalculationMethod for Ultimate Bearing Capacity of Structureand Its Convergence[J].China Journal of Highwayand Transport,2006,19(5):65-70.
[10]沈蒲生,方辉,夏心红,等.考虑施工过程和收缩徐变的框架结构简化分析[J].建筑科学与工程学报,2006,23(2):41-45.SHEN Pu-sheng,FANG Hui,XIA Xin-hong,et al.Simplified Analysis for Frame Structure ConsideringConstruction Process,Shrinkage and Creep[J].Jour-nal of Architecture and Civil Engineering,2006,23(2):41-45.
[11]周绪红,李艳敏,石宇,等.竖向荷载作用下冷弯薄壁型钢墙架柱的承载力[J].建筑科学与工程学报,2006,23(3):7-13.ZHOU Xu-hong,LI Yan-min,SHI Yu,et al.BearingCapacity of Cold-formed Thin-walled Steel Wall StudUnder Vertical Load[J].Journal of Architecture andCivil Engineering,2006,23(3):7-13.
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