弦支穹顶结构的多点地震动输入分析
|
摘要
为研究弦支穹顶结构在多点地震动激励下的响应情况,采用大质量法通过ANSYS有限元软件对40、80和120m跨度的弦支穹顶结构进行时程分析,列出结构在不同视波速行波激励下的地震响应,并与一致激励下的地震响应进行了对比分析。结果表明,考虑地震动行波效应后,结构杆件应力随视波速的增大而减小,越来越接近一致激励下的杆件应力;且对弦支穹顶结构不同位置的杆件的应力值影响有所不同。结果表明,对于大跨度弦支穹顶结构,在计算随机地震响应分析时,必须考虑行波效应的影响;而且应对可能出现的地面视波速进行全面分析。
In order to investigate the seismic responses of the Suspen-dome under multiple-support excitation,the time-history analysis are carried on the Suspen-dome with 60 m span using large mass method in ANSYS,the seismic responses of the Suspen-dome under excitation of traveling waves with different apparent velocities were also studied,and compared with the seismic responses under uniform excitation. The results show that wave passage effect on the axial stresses of bars of the Suspen-dome structure decrease with the increase of the apparent velocity of the traveling wave,close to the axial stresses of bars under uniform excitation; and the effect is different for the axial stresses of bars at different positions. Some conclusions are drawn that the wave traveling effect of the ground motion must be considered for the random seismic response analysis of the long-span Suspen-dome structures; the comprehensive analysis should be performed for possible apparent wave velocities.
In order to investigate the seismic responses of the Suspen-dome under multiple-support excitation,the time-history analysis are carried on the Suspen-dome with 60 m span using large mass method in ANSYS,the seismic responses of the Suspen-dome under excitation of traveling waves with different apparent velocities were also studied,and compared with the seismic responses under uniform excitation. The results show that wave passage effect on the axial stresses of bars of the Suspen-dome structure decrease with the increase of the apparent velocity of the traveling wave,close to the axial stresses of bars under uniform excitation; and the effect is different for the axial stresses of bars at different positions. Some conclusions are drawn that the wave traveling effect of the ground motion must be considered for the random seismic response analysis of the long-span Suspen-dome structures; the comprehensive analysis should be performed for possible apparent wave velocities.
引文
[1]Zhang Y H,Lin J H,Williams F W,et al.Wave passage effect of seismic ground motions on the response of multiply supported structures[J].Structural Engineering and Mechanics,2005,20(6):655-672.
[2]Su Liang,Dong Shilin,Shiro Kato.A new average response spectrum method for linear response analysis of structures to spatial earthquake ground motions[J].Engineering Structures,2006,28(13):1835-1842.
[3]Mamoru Kawaguchi,Masaru Abe,Tatsuo Hatato,et al.On a structural system“suspend-dome”system[C]//Proc of IASS Sym Posium.Istambul,1993:523-530.
[4]张庆.弦支穹顶结构分析研究[D].云南:昆明理工大学,2006.Zhang Qing.Analysis research of suspend-dome structure[D].Yunnan:Kunming University of Science&Technology.(in Chinese)
[5]金波,赵晓旭.弦支穹顶结构工程应用和研究现状[J].建筑技术,2009,40(7):647-650.Jin Bo,Zhao Xiaoxu.Engineering application and research on status quo of suspended dome structure[J].Architecture Technology,2009,40(7):647-650.(in Chinese)
[6]张宏志,张明山,董石麟.弦支穹顶结构动力分析[J].计算力学学报,2005,22(15):646-650.Zhang Hongzhi,Zhang Mingshan,Dong Shilin.Dynamic analysis of suspend-dome[J].Chinese Journal of Computational Mechanics,2005,22(15):646-650.(in Chinese)
[7]梁嘉庆.大跨空间结构在非一致地震输入下的弹性响应分析[D].南京:东南大学,2004.Liang Jiaqing.Study on elastic vibration of space structures under non-uniform excitations[D].Nanjing:Southeast University,2004.(in Chinese)
[8]梁嘉庆,叶继红.结构跨度对非一致输入下大跨空间网格结构地震响应的影响[J].空间结构,2004,10(3):13-18.Liang Jiaqing,Ye Jihong.The influence of structural span on seismic response of space lattice structures under non-uniform excitation[J].Spatial Structures,2004,10(3):13-18.(in Chinese)
[9]张亚辉,李丽媛,陈艳,等.大跨度结构地震行波效应研究[J].大连理工大学学报,2005,45(4):480-486.Zhang Yahui,Li Liyuan,Chen Yan,et al.Wave passage effect on random seismic response of long-span structures[J].Journal of Dalian University of Technology,2005,45(4):480-486.(in Chinese)
[10]李云.大跨空间结构在多点地震动激励作用下的反应分析[D].北京:北京交通大学,2008.Li Yun.Response analysis of large-span structures under spatially varying earthquake ground motion[D].Beijing:Beijing Jiaotong University,2008.(in Chinese)
[11]丁阳,王波.大跨度空间网格结构在地震行波作用下的响应[J].地震工程与工程振动,2002,22(5):71-76.Ding Yang,Wang Bo.Seismic response of long-span spatial lattice structure considering traveling-waves effects[J].Earthquake Engineering and Engineering Vibration,2002,22(5):71-76.(in Chinese)
[12]丁阳,林伟,李忠献.大跨度空间结构多维多点非平稳随机地震反应分析[J].工程力学,2007,24(3):97-103.Ding Yang,Lin Wei,Li Zhongxian.Non-stationary random seismic analysis of long-span spatial structures under multi-support and multi-dimensional earthquake excitations[J].Engineering Mechanics,2007,24(3):97-103.
[13]全伟,李宏男.大跨结构多维多点输入抗震研究进展[J].防灾减灾工程学报,2006,26(3):343-351.Quan Wei,Li Hongnan.State-of-the-art review on multi-component multi-support seismic response analysis of long-span structures[J].Journal of Disaster Prevention and Mitigation Engineering,2006,26(3):343-351.(in Chinese)
[14]李忠献,林伟,丁阳.行波效应对大跨度空间网格结构地震响应的影响[J].天津大学学报,2007,40(1):1-8.Li Zhongxian,Lin Wei,Ding Yang.Influence of wave passage effect on seismic responses of long-span spatial lattice structures[J].Journal Of Tianjin University,2007,40(1):1-8.(in Chinese)
[15]丁阳,张笈玮,李忠献.行波效应对大跨度空间结构随机地震响应的影响[J].地震工程与工程振动,2008,28(1):24-31.Ding Yang,Zhang Jiwei,Li Zhongxian.Influence of wave travelling effect on random seismic responses of long-span spatial structures[J].Earthquake Engineering and Engineering Vibration,2008,28(1):24-31.(in Chinese)
[2]Su Liang,Dong Shilin,Shiro Kato.A new average response spectrum method for linear response analysis of structures to spatial earthquake ground motions[J].Engineering Structures,2006,28(13):1835-1842.
[3]Mamoru Kawaguchi,Masaru Abe,Tatsuo Hatato,et al.On a structural system“suspend-dome”system[C]//Proc of IASS Sym Posium.Istambul,1993:523-530.
[4]张庆.弦支穹顶结构分析研究[D].云南:昆明理工大学,2006.Zhang Qing.Analysis research of suspend-dome structure[D].Yunnan:Kunming University of Science&Technology.(in Chinese)
[5]金波,赵晓旭.弦支穹顶结构工程应用和研究现状[J].建筑技术,2009,40(7):647-650.Jin Bo,Zhao Xiaoxu.Engineering application and research on status quo of suspended dome structure[J].Architecture Technology,2009,40(7):647-650.(in Chinese)
[6]张宏志,张明山,董石麟.弦支穹顶结构动力分析[J].计算力学学报,2005,22(15):646-650.Zhang Hongzhi,Zhang Mingshan,Dong Shilin.Dynamic analysis of suspend-dome[J].Chinese Journal of Computational Mechanics,2005,22(15):646-650.(in Chinese)
[7]梁嘉庆.大跨空间结构在非一致地震输入下的弹性响应分析[D].南京:东南大学,2004.Liang Jiaqing.Study on elastic vibration of space structures under non-uniform excitations[D].Nanjing:Southeast University,2004.(in Chinese)
[8]梁嘉庆,叶继红.结构跨度对非一致输入下大跨空间网格结构地震响应的影响[J].空间结构,2004,10(3):13-18.Liang Jiaqing,Ye Jihong.The influence of structural span on seismic response of space lattice structures under non-uniform excitation[J].Spatial Structures,2004,10(3):13-18.(in Chinese)
[9]张亚辉,李丽媛,陈艳,等.大跨度结构地震行波效应研究[J].大连理工大学学报,2005,45(4):480-486.Zhang Yahui,Li Liyuan,Chen Yan,et al.Wave passage effect on random seismic response of long-span structures[J].Journal of Dalian University of Technology,2005,45(4):480-486.(in Chinese)
[10]李云.大跨空间结构在多点地震动激励作用下的反应分析[D].北京:北京交通大学,2008.Li Yun.Response analysis of large-span structures under spatially varying earthquake ground motion[D].Beijing:Beijing Jiaotong University,2008.(in Chinese)
[11]丁阳,王波.大跨度空间网格结构在地震行波作用下的响应[J].地震工程与工程振动,2002,22(5):71-76.Ding Yang,Wang Bo.Seismic response of long-span spatial lattice structure considering traveling-waves effects[J].Earthquake Engineering and Engineering Vibration,2002,22(5):71-76.(in Chinese)
[12]丁阳,林伟,李忠献.大跨度空间结构多维多点非平稳随机地震反应分析[J].工程力学,2007,24(3):97-103.Ding Yang,Lin Wei,Li Zhongxian.Non-stationary random seismic analysis of long-span spatial structures under multi-support and multi-dimensional earthquake excitations[J].Engineering Mechanics,2007,24(3):97-103.
[13]全伟,李宏男.大跨结构多维多点输入抗震研究进展[J].防灾减灾工程学报,2006,26(3):343-351.Quan Wei,Li Hongnan.State-of-the-art review on multi-component multi-support seismic response analysis of long-span structures[J].Journal of Disaster Prevention and Mitigation Engineering,2006,26(3):343-351.(in Chinese)
[14]李忠献,林伟,丁阳.行波效应对大跨度空间网格结构地震响应的影响[J].天津大学学报,2007,40(1):1-8.Li Zhongxian,Lin Wei,Ding Yang.Influence of wave passage effect on seismic responses of long-span spatial lattice structures[J].Journal Of Tianjin University,2007,40(1):1-8.(in Chinese)
[15]丁阳,张笈玮,李忠献.行波效应对大跨度空间结构随机地震响应的影响[J].地震工程与工程振动,2008,28(1):24-31.Ding Yang,Zhang Jiwei,Li Zhongxian.Influence of wave travelling effect on random seismic responses of long-span spatial structures[J].Earthquake Engineering and Engineering Vibration,2008,28(1):24-31.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心