多维多点输入下大跨空间网格结构的可靠度分析
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摘要
本文同时考虑地震动两个水平向和一个竖直向共三个平动分量,并考虑了地震动场的空间相关性,在虚拟激励反应谱法的基础上,对大跨空间网格结构进行了多维多点输入和多维一致输入下的抗震可靠度分析。考查了两种输入方法下危险杆件在结构分布、数量等方面的差异以及危险杆件随结构跨度、视波速的变化关系。
In this paper,the aseismic reliability of long-span space lattice structures subjected to multi-dimensional and multi-support excitation,as well as to multi-dimensional and simple-support excitation are thoroughly analyzed based upon the pseudo-excitation response spectrum method.The aseismic reliability obtained by the multiple support excitation is compared to that investigated by the simple support excitation,such as the difference in the distribution and the amount of dangerous elements.The relationship between the dangerous elements and the span,as well as the apparent velocity is studied also.
In this paper,the aseismic reliability of long-span space lattice structures subjected to multi-dimensional and multi-support excitation,as well as to multi-dimensional and simple-support excitation are thoroughly analyzed based upon the pseudo-excitation response spectrum method.The aseismic reliability obtained by the multiple support excitation is compared to that investigated by the simple support excitation,such as the difference in the distribution and the amount of dangerous elements.The relationship between the dangerous elements and the span,as well as the apparent velocity is studied also.
引文
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[9]孙景江,江近仁.与规范反应谱相对应的金井清谱的谱参数[J].世界地震工程,1990,(1):42~48.
[10]Harichandran R S,Vanmarke J.Stochastic variation ofearthquake ground motion in space and time[J].Journal ofEngineerjing Mechanics,1986,112(4):154~174.
[11]刘先明.大跨度空间网格结构多点输入反应谱理论的研究和应用[D].南京:东南大学博士学位论文,2003.
[2]张锦虹,陈扬骥.双层圆柱面网壳的抗震性能研究[J].同济大学学报,1998,26(5):498~502.
[3]李宏男.结构多维抗震理论与设计方法[M].北京:科学出版社,1998.
[4]孙建梅,叶继红.多点输入下大跨空间结构抗震性能和分析方法的研究[D].南京:东南大学博士学位论文,2005.
[5]Berrah M,Kausel E.Response spectrum analysis ofstructures subjected to spatially varying motions[J].Earthquake Engineering&Structure Dynamics,1992,(1):461~470.
[6]Berrah M,Kausel E.A model combination rule for spatiallyvarying seismic motions[J].Earthquake Engineering&Structure Dynamics,1993,(22):791~800.
[7]Lin J H.A fast CQC algorthm of PSD matrices for randomseismic responses[J].Computer&Structures,1992,44(3):683~687.
[8]Lin J H,Williams F W and Zhang W S.A new approach tomulti-excitation stochastic seismic responses[J].Micro.Computers in Civil Engineering,1993,8(4):283~290.
[9]孙景江,江近仁.与规范反应谱相对应的金井清谱的谱参数[J].世界地震工程,1990,(1):42~48.
[10]Harichandran R S,Vanmarke J.Stochastic variation ofearthquake ground motion in space and time[J].Journal ofEngineerjing Mechanics,1986,112(4):154~174.
[11]刘先明.大跨度空间网格结构多点输入反应谱理论的研究和应用[D].南京:东南大学博士学位论文,2003.
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