行波效应对张弦梁结构地震响应的影响分析
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摘要
以广州国际会展中心单向空间张弦梁结构这一典型张弦梁结构为计算分析算例,应用大型有限元软件ANSYS对张弦梁结构的地震响应进行了空间非线性时程反应分析。通过考虑地震波以不同速度传播引起的行波效应,研究了大跨度张弦梁结构在此类情况下的地震响应,分析了大跨空间张弦梁结构在横向、竖向和纵向3向地震联合作用下考虑非一致输入条件的地震响应变化规律的关系。研究结果表明,行波效应的影响与波有关,不同地震波作用下结构的响应有很大的差异,视波速越小对结构的地震响应越明显。
The one-way beam string structure of Guangzhou international convention and exhibition center was taken as a calculation and analysis example.The large finite element software ANSYS was adopted to analyse the time-history of the space nonlinear seismic response of the beam string structure.The travelling wave effect by the seismic wave propagation at different speeds was considered.The seismic responses of the beam string structure in such cases were studied.The large-span space beam string structure in the combined horizontal,vertical and longitudinal seismic motions was analysed to determine seismic response under non-consistent input(irregular) changes.The results indicate that the effect of the travelling wave changes with the wave and the seismic responses of the beam string structure differ with the seismic waves;that the smaller the wave speed,the greater the responses of the beam string structure.
The one-way beam string structure of Guangzhou international convention and exhibition center was taken as a calculation and analysis example.The large finite element software ANSYS was adopted to analyse the time-history of the space nonlinear seismic response of the beam string structure.The travelling wave effect by the seismic wave propagation at different speeds was considered.The seismic responses of the beam string structure in such cases were studied.The large-span space beam string structure in the combined horizontal,vertical and longitudinal seismic motions was analysed to determine seismic response under non-consistent input(irregular) changes.The results indicate that the effect of the travelling wave changes with the wave and the seismic responses of the beam string structure differ with the seismic waves;that the smaller the wave speed,the greater the responses of the beam string structure.
引文
[1]丁阳,岳增国,刘锡良.大跨张弦梁结构的地震响应分析[J].地震工程与工程振动,2003,23(5):163-168.
[2]董石麟.我国大跨度空间钢结构的发展与展望[J].空间结构,2000,6(2):3-13.
[3]黄颖,房贞政.单向张弦梁结构风振响应的时域分析[J].地震工程与工程振动,2009,29(2):110-117.
[4]Wang Xiuli,Liu Yongzhou.Influence analysis of rise-to-span ratio and sag ratio on the pre-stressed spatial truss string struc-ture[C]//The Eighth International Symposium on Structure Engineering for Young Experts.Beijing:Science Press,2004:843-849.
[5]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.
[6]李忠献,林伟.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.
[7]黄颖.张弦梁结构非线性地震响应分析[J].福建建设科技,2011(5):21-24.
[2]董石麟.我国大跨度空间钢结构的发展与展望[J].空间结构,2000,6(2):3-13.
[3]黄颖,房贞政.单向张弦梁结构风振响应的时域分析[J].地震工程与工程振动,2009,29(2):110-117.
[4]Wang Xiuli,Liu Yongzhou.Influence analysis of rise-to-span ratio and sag ratio on the pre-stressed spatial truss string struc-ture[C]//The Eighth International Symposium on Structure Engineering for Young Experts.Beijing:Science Press,2004:843-849.
[5]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.
[6]李忠献,林伟.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.
[7]黄颖.张弦梁结构非线性地震响应分析[J].福建建设科技,2011(5):21-24.
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