半刚性连接球面网壳结构的动力分析
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摘要
通过半刚性节点模型,利用有限元方法对球面网壳结构进行动力分析.建立了半刚性情形下单元刚度矩阵,通过求解特征值问题,得到半刚性球面网壳结构自振特性规律,并与理想刚接及理想铰接情形进行了对比.采用时程分析法对球面网壳进行了水平地震作用下的分析计算,比较了半刚性节点模型所得结果与理想刚接及理想铰情形的异同,说明使用半刚性模型进行结构计算分析的合理性.论文结论对网壳结构的工程设计及施工有一定的参考价值.
The finite element method is used to analyze the dynamic characteristics of the grid shell structures by a semi-rigid node model.The element's stiffness matrix is established for the semi-rigid structures.The natural vibration characteristic is obtained by solving the eigen-value equations.The displacement results of semi-rigid structures are compared with that of the perfect hinged and complete rigid structures.The time-history method is utilized to get the horizontal seismic response and these three structures,i.e.semi-rigid,perfect hinged and complete rigid structures are analyzed and compared.The simulation results show the rationality of semi-rigid model for practical structure analysis.The conclusion of this paper can benefit the design and construction of spatial grid structures.
The finite element method is used to analyze the dynamic characteristics of the grid shell structures by a semi-rigid node model.The element's stiffness matrix is established for the semi-rigid structures.The natural vibration characteristic is obtained by solving the eigen-value equations.The displacement results of semi-rigid structures are compared with that of the perfect hinged and complete rigid structures.The time-history method is utilized to get the horizontal seismic response and these three structures,i.e.semi-rigid,perfect hinged and complete rigid structures are analyzed and compared.The simulation results show the rationality of semi-rigid model for practical structure analysis.The conclusion of this paper can benefit the design and construction of spatial grid structures.
引文
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[12]杨溥,李英民,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37.YANG Pu,LI Ying-ming,LAI Ming.Selected controltargets of input earthquake waves for structural ti me-domain analysis[J].China Civil Engineering Journal,2000,33(6):33-37.
[13]GB 50011-2001.建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[14]林家浩,张亚辉,赵岩.大跨度结构抗震分析方法及近期进展[J].力学进展,2001,31(3):350-360.LINJia-hao,ZHANG Ya-hui,ZHAO Yan.Advancesof anti-seismic analysis for large span structures[J].Advances in Mechanics,2001,31(3):350-360.
[15]陈军明,陈应波,吴代华,等.单层球面网壳结构地震响应的动力时程分析[J].空间结构,1999,15(4):15-21.CHENJun-ming,CHEN Ying-bo,Wu Dai-hua,et al.Dynamic analysis for single layer spherical grid shellsunder earthquake loads[J].Spatial Structures,1999,15(4):15-21.
[2]CHEN W F.Stability Design of Semi-rigid Frames[M].John Wiley&Sons,1996.
[3]NETHERCOT D A.Unified classification system forbeam-to-column connections[J].Journal of Construc-tional Steel Research,1998,45(1):39-65.
[4]HASAN Rafiq,KISHI Nori mitsu,CHEN Wai-Fah.Anew nonlinear connection classification system[J].Jour-nal of Constructional Steel Research,1998,47(1-2):119-140.
[5]丁洁民,沈祖炎.节点半刚性对钢结构结构内力和位移的影响[J].建筑结构,1999,26(6):8-12.DINGJie-ming,SHENZu-yan.The effects of semi-rig-id node properties on structural stresses and displace-ments[J].Building Structures,1999,29(6):8-12.
[6]李国强,沈祖炎.半刚性连接钢结构弹塑性地震反应分析[J].同济大学学报,1992,20(6):123-128.LI Guo-qiang,SHENZu-yan.Elastic-plastic seismic re-sponse analysis for steel structures with semi-rigid con-nections[J].Journal of Tongji University,1992,20(6):123-128.
[7]李丽娟,车伟娴,杨笑梅,等.半刚性连接网壳结构的有限元分析[J].空间结构,2008,14(1):43-49,39.LI Li-juan,CHE Wei-xian,YANG Xiao-mei,et al.Fi-nite element analysis of semi-rigid grid shell structures[J].Spatial Structures,2008,14(1):43-49,39.
[8]ARCHIBALD N Sherbourne,MOHAMMED R Ba-haari.Finite element prediction of end plate bolted con-nection behavior parametric study[J].Journal of Struc-tural Engineering,1997:157-164.
[9]CHRISTOPHER J E,BJORHOVDE R.Semi-rigidframe design methods for practicing engineering[J].En-gineering Journal,1999,36(1):12-28.
[10]李国豪.工程结构抗震动力学[M].上海:上海科学技术出版社,1980.
[11]丁阳.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.Responses of large span spatial grid shellsunder seismic waves[J].Earthquake Engineering andEngineering Vibration,2002,22(5):71-76.
[12]杨溥,李英民,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37.YANG Pu,LI Ying-ming,LAI Ming.Selected controltargets of input earthquake waves for structural ti me-domain analysis[J].China Civil Engineering Journal,2000,33(6):33-37.
[13]GB 50011-2001.建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[14]林家浩,张亚辉,赵岩.大跨度结构抗震分析方法及近期进展[J].力学进展,2001,31(3):350-360.LINJia-hao,ZHANG Ya-hui,ZHAO Yan.Advancesof anti-seismic analysis for large span structures[J].Advances in Mechanics,2001,31(3):350-360.
[15]陈军明,陈应波,吴代华,等.单层球面网壳结构地震响应的动力时程分析[J].空间结构,1999,15(4):15-21.CHENJun-ming,CHEN Ying-bo,Wu Dai-hua,et al.Dynamic analysis for single layer spherical grid shellsunder earthquake loads[J].Spatial Structures,1999,15(4):15-21.
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