索网点式幕墙在主体结构多点激励下地震响应分析方法探讨
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摘要
针对主体结构对单层索网点式玻璃幕墙地震响应的影响,指出了主体结构二次地震输入的纵向空间变异性,进而提出考虑主体结构影响的单层索网玻璃幕墙的地震响应分析方法,即多点激励联合法,并从理论及有限元算例分析上验证了其可行性和必要性。利用多点激励联合模型,在假设二次输入数学模型基础上,研究了主体结构二次输入参数对索网动力响应的影响,及阻尼对索网幕墙地震响应的影响,并得出结论:主体结构位移输入幅值和层间转角较大,或输入主频接近索网基本频率时,主体结构对索网幕墙位移影响较大。最后利用此方法进行算例分析对主体结构的影响大小进行了初步估计,为实际工程中索网幕墙的抗震设计提供参考。
Considering the effects of primary structure on the seismic response of the point-supported glass wall with single-layer cable net, the method to analyze its seismic response under vertical multi-point excitation of primary structure is proposed. It combined the input method with multi-point excitation, with theoretical and numerical validation, to consider the effects of primary structure on the seismic response. With this method and the assumptive model for second input, the effects of three parameters of second input and damp were investigated in the seismic response analysis, concluding that the effects of primary structure on cable net will be more prominent with the increase of input and storey drift, as well as the decrease of their difference in basic frequency. In the end, the proposed method was applied to several examples to imply the contribution of primary structures to the seismic response, which can serve later practical design of similar cable net glass wall.
Considering the effects of primary structure on the seismic response of the point-supported glass wall with single-layer cable net, the method to analyze its seismic response under vertical multi-point excitation of primary structure is proposed. It combined the input method with multi-point excitation, with theoretical and numerical validation, to consider the effects of primary structure on the seismic response. With this method and the assumptive model for second input, the effects of three parameters of second input and damp were investigated in the seismic response analysis, concluding that the effects of primary structure on cable net will be more prominent with the increase of input and storey drift, as well as the decrease of their difference in basic frequency. In the end, the proposed method was applied to several examples to imply the contribution of primary structures to the seismic response, which can serve later practical design of similar cable net glass wall.
引文
[1]Wang Yuanqing,Sun Fen,Shi Yongjiu,Li Shaofu.Design and finite element analysis of complicated single-layer cable net[C].Proceeding of3rd International05Symposium on Steel Structures(ISSS),Korea,2005.
[2]吴丽丽,石永久,王元清.单层平面索网幕墙结构的实用抗风设计方法研究[J].工程力学,2008,25(2):102―109.Wu Lili,Shi Yongjiu,Wang Yuanqing.Research practical wind-resistant design methodology of monolayer cable net for glass facades[J].Engineering Mechanics,2008,25(2):102―109.(in Chinese)
[3]Shi Yongjiu,Li Yong,Wang Yuanqing.Seismic design of monolayer cable net in point-supporting glass wall of national network administration centre[C].Proceedings of the10th International Symposium on Structural Engineering for Young Experts.Changsha:2008.
[4]李勇,石永久,王元清.主体结构下单层索网玻璃幕墙地震响应的整体分析研究[J].建筑科学,2009,25(7):5―10,24.Li Yong,Shi Yongjiu,Wang Yuanqing.Analysis of the seismic response of single-layer cable net in glass wall coupled with main structure[J].Building Science,2009,25(7):5―10,24.
[5]Memari M,Behr Rchard A,Kremer Paul A.Seismic behavior of curtain walls containing insulating glass units[J].Journal of Architectural Engineering,2003,9(2):70―85.
[6]Behr Richard A.Seismic performance of architectural glass in mid-rised curtain wall[J].Journal of Architectural Engineering,1998,4(3):94―98.
[7]胡聿贤.地震工程学[M].北京:地震出版社,1988.Hu Yuxian.Earthquake engineering[M].Beijing:Earthquake Publishing House,1998.(in Chinese)
[8]陈海斌.抗震分析中的多点激励问题[J].中国水运,2006,6(11):106―107.Chen Haibin.In earthquake resistance analysis multi-spot drive question[J].China Water Transport,2006,6(11):106―107.(in Chinese)
[9]梁嘉庆,叶继红.多点输入下大跨度空间网格结构的地震响应分析[J].东南大学学报(自然科学版),2003,33(5):625―630.Liang Jiaqing,Ye Jihong.Seismic response analysis of long-span space lattice structures under multiple-support excitation[J].Journal of Southeast University(Natural Science Edition),2003,33(5):625―630.(in Chinese)
[10]冯若强,花定兴,武岳,沈世钊.单层平面索网幕墙结构玻璃与索网协同工作的动力性能研究[J].土木工程学报,2007,40(10):27―33.Feng Ruoqiang,Hua Dingxing,Wu Yue,Shen Shizhao.Dynamic performance of cable net facade with consideration of glass panels[J].China Civil Engineering Journal,2007,40(10):27―33.(in Chinese)
[11]曹资,薛素铎,刘景园.索网屋盖结构阻尼特性试验研究[J].地震工程与工程振动,1995,15(2):92―99.Cao Zi,Xue Suduo,Liu Jingyuan.An experimental study on damping behavior of cable networks roof[J].Journal of Earthquake Engineering and Engineering Vibration,1995,15(2):92―99.(in Chinese)
[2]吴丽丽,石永久,王元清.单层平面索网幕墙结构的实用抗风设计方法研究[J].工程力学,2008,25(2):102―109.Wu Lili,Shi Yongjiu,Wang Yuanqing.Research practical wind-resistant design methodology of monolayer cable net for glass facades[J].Engineering Mechanics,2008,25(2):102―109.(in Chinese)
[3]Shi Yongjiu,Li Yong,Wang Yuanqing.Seismic design of monolayer cable net in point-supporting glass wall of national network administration centre[C].Proceedings of the10th International Symposium on Structural Engineering for Young Experts.Changsha:2008.
[4]李勇,石永久,王元清.主体结构下单层索网玻璃幕墙地震响应的整体分析研究[J].建筑科学,2009,25(7):5―10,24.Li Yong,Shi Yongjiu,Wang Yuanqing.Analysis of the seismic response of single-layer cable net in glass wall coupled with main structure[J].Building Science,2009,25(7):5―10,24.
[5]Memari M,Behr Rchard A,Kremer Paul A.Seismic behavior of curtain walls containing insulating glass units[J].Journal of Architectural Engineering,2003,9(2):70―85.
[6]Behr Richard A.Seismic performance of architectural glass in mid-rised curtain wall[J].Journal of Architectural Engineering,1998,4(3):94―98.
[7]胡聿贤.地震工程学[M].北京:地震出版社,1988.Hu Yuxian.Earthquake engineering[M].Beijing:Earthquake Publishing House,1998.(in Chinese)
[8]陈海斌.抗震分析中的多点激励问题[J].中国水运,2006,6(11):106―107.Chen Haibin.In earthquake resistance analysis multi-spot drive question[J].China Water Transport,2006,6(11):106―107.(in Chinese)
[9]梁嘉庆,叶继红.多点输入下大跨度空间网格结构的地震响应分析[J].东南大学学报(自然科学版),2003,33(5):625―630.Liang Jiaqing,Ye Jihong.Seismic response analysis of long-span space lattice structures under multiple-support excitation[J].Journal of Southeast University(Natural Science Edition),2003,33(5):625―630.(in Chinese)
[10]冯若强,花定兴,武岳,沈世钊.单层平面索网幕墙结构玻璃与索网协同工作的动力性能研究[J].土木工程学报,2007,40(10):27―33.Feng Ruoqiang,Hua Dingxing,Wu Yue,Shen Shizhao.Dynamic performance of cable net facade with consideration of glass panels[J].China Civil Engineering Journal,2007,40(10):27―33.(in Chinese)
[11]曹资,薛素铎,刘景园.索网屋盖结构阻尼特性试验研究[J].地震工程与工程振动,1995,15(2):92―99.Cao Zi,Xue Suduo,Liu Jingyuan.An experimental study on damping behavior of cable networks roof[J].Journal of Earthquake Engineering and Engineering Vibration,1995,15(2):92―99.(in Chinese)
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