Geiger索穹顶结构自振特性及地震响应分析研究
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摘要
Geiger索穹顶结构是由索杆膜结构组成的柔性体系,该结构属于对振动敏感的结构,膜结构作为索穹顶的一部分在受力分析中必不可少,并且膜面初始预应力的大小直接影响结构的内力,因此本文以两种不同的膜面预应力作为初始条件进行非线性有限元找形,对索杆膜结构的整体找形结果进行自振特性分析和El Centro波作用下的地震时程分析,结果表明改变膜结构的初始预应力可以有效地增强结构的刚度,提高结构的抗震能力。
Geiger cable dome is a flexible structure including cable strut and membrane which is sensitive to vibration. The initial prestress of membrane directly affects structural initial force,so two kinds of initial prestresses on membrane are considered in this paper to realize form-finding of the whole structure,to obtain vibration characteristics and time history analysis under El Cenro. The solutions show that: increasing the initial prestress on membrane can strengthen the stiffness of structure and improve structural seismic capacity.
Geiger cable dome is a flexible structure including cable strut and membrane which is sensitive to vibration. The initial prestress of membrane directly affects structural initial force,so two kinds of initial prestresses on membrane are considered in this paper to realize form-finding of the whole structure,to obtain vibration characteristics and time history analysis under El Cenro. The solutions show that: increasing the initial prestress on membrane can strengthen the stiffness of structure and improve structural seismic capacity.
引文
[1]D A Gasparini,P C Perdilkaris,N Kanj.Dynamic and static behavior of cable dome model[J].Journal of Structures Engineering,1989,115(2):363-381.
[2]黄呈伟,陶燕.索穹顶结构的动力特性计算分析[J].空间结构,2001,7(2):27-32.HUANG Chengwei,TAO Yan.Analysis of dynamical characteristics for cable dome[J].Spatial Structures,2001,7(2):27-32.(in Chinese)
[3]张立新.索穹顶体系成形关键问题和风致振动[D].上海:同济大学,2001.ZHANG Lixin.The key problem of formfinding and wind-induced vibration on cable dome[D].Shanghai:Tongji University,2001.(in Chinese)
[4]詹伟东.葵花型索穹顶体系的理论分析与试验研究[D].杭州:浙江大学,2004.ZHAN Weidong.Theoretical and experimental research of sunflower-patterned cable dome[D].Hang Zhou:Zhejiang University,2004.(in Chinese)
[5]高博青,姚建锋,董石麟.布索对加肋穹顶索杆结构动力性能影响的研究[J].浙江大学学报(理学版),2003,30(3):349-353.GAO Boqing,YAO Jianfeng,DONG Shilin.Study on the cable dome arrangement effects of dynamic properties to ribbed dome structure[J].Journal of Zhejiang University(Science Editor),2003,30(3):349-353.(in Chinese)
[6]季伟捷.索杆梁膜结构体系动力算法优化、特性研究及程序开发[D].杭州:浙江大学,2006.JI Weijie.Study of dynamic arithmetic and mechanical characteristics for the cable-strut-beam-membrane structure and dynamic programming[D].Hang Zhou:Zhejiang University,2006.(in Chinese)
[7]王新敏,李义强,许宏伟.Ansys结构分析单元与应用[M].北京:人民交通出版社,2011.WANG Xinmin,LI Yiqiang,XU Hong-wei.Structural analysis unit and application in Ansys[M].Beijing:China communication press,2011.(in Chinese)
[8]张丽梅.非完全对称Geiger索穹顶结构特征与分析理论研究[D].上海:上海交通大学,2008.ZHANG Limei.Structural analysis algorithm and structural performance research for non-fully symmetry Geiger cable dome.[D].Shanghai:Shanghai Jiaotong University,2008.(in Chinese)
[9]Argyris J.H.,Scharpf D.W.Large deflection analysis of prestressed networks[J].ASCE,J.Of Structural division,1972(ST3):633-654.
[10]Argyris J.H.,Angelopoulous,T.Bichat.A general method for the shape finding of lightweight tension structures[J].Comp.Meth.Appl.Mech.Eng.1974,3,135-149.
[2]黄呈伟,陶燕.索穹顶结构的动力特性计算分析[J].空间结构,2001,7(2):27-32.HUANG Chengwei,TAO Yan.Analysis of dynamical characteristics for cable dome[J].Spatial Structures,2001,7(2):27-32.(in Chinese)
[3]张立新.索穹顶体系成形关键问题和风致振动[D].上海:同济大学,2001.ZHANG Lixin.The key problem of formfinding and wind-induced vibration on cable dome[D].Shanghai:Tongji University,2001.(in Chinese)
[4]詹伟东.葵花型索穹顶体系的理论分析与试验研究[D].杭州:浙江大学,2004.ZHAN Weidong.Theoretical and experimental research of sunflower-patterned cable dome[D].Hang Zhou:Zhejiang University,2004.(in Chinese)
[5]高博青,姚建锋,董石麟.布索对加肋穹顶索杆结构动力性能影响的研究[J].浙江大学学报(理学版),2003,30(3):349-353.GAO Boqing,YAO Jianfeng,DONG Shilin.Study on the cable dome arrangement effects of dynamic properties to ribbed dome structure[J].Journal of Zhejiang University(Science Editor),2003,30(3):349-353.(in Chinese)
[6]季伟捷.索杆梁膜结构体系动力算法优化、特性研究及程序开发[D].杭州:浙江大学,2006.JI Weijie.Study of dynamic arithmetic and mechanical characteristics for the cable-strut-beam-membrane structure and dynamic programming[D].Hang Zhou:Zhejiang University,2006.(in Chinese)
[7]王新敏,李义强,许宏伟.Ansys结构分析单元与应用[M].北京:人民交通出版社,2011.WANG Xinmin,LI Yiqiang,XU Hong-wei.Structural analysis unit and application in Ansys[M].Beijing:China communication press,2011.(in Chinese)
[8]张丽梅.非完全对称Geiger索穹顶结构特征与分析理论研究[D].上海:上海交通大学,2008.ZHANG Limei.Structural analysis algorithm and structural performance research for non-fully symmetry Geiger cable dome.[D].Shanghai:Shanghai Jiaotong University,2008.(in Chinese)
[9]Argyris J.H.,Scharpf D.W.Large deflection analysis of prestressed networks[J].ASCE,J.Of Structural division,1972(ST3):633-654.
[10]Argyris J.H.,Angelopoulous,T.Bichat.A general method for the shape finding of lightweight tension structures[J].Comp.Meth.Appl.Mech.Eng.1974,3,135-149.
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