三向球面空腹网壳结构的动力特性研究
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摘要
三向球面空腹网壳是一种新型的空间结构形式,它可以看成是两个同曲率中心的三向网格球面单层网壳仅通过腹杆相连而成,并且连接上下弦的腹杆都指向曲率中心。采用子空间迭代法对三向球面空腹网壳的自振特性进行了研究,通过改变网壳的矢跨比、厚度、腹杆截面、荷载大小以及支座约束等参数,全面探讨了该结构的动力特性,得到了该结构基频随参数变化规律。
Three-dimensional reticulated vierendeel shell is a new form of space structures,which can be seen as two same curvature single-layer spherical lattice shells with three-dimensional girds only connected by web members,and all web members point to curvature center.In this paper,natural vibration characteristics of three-dimensional reticulated vierendeel shell are analyzed by subspace iteration method.By means of changing the rise-to-span ratio,shell thickness,section area of the web member,load size and the support restraint,dynamic characteristics of the structure are totally discussed.Some regular conclusions are given.
Three-dimensional reticulated vierendeel shell is a new form of space structures,which can be seen as two same curvature single-layer spherical lattice shells with three-dimensional girds only connected by web members,and all web members point to curvature center.In this paper,natural vibration characteristics of three-dimensional reticulated vierendeel shell are analyzed by subspace iteration method.By means of changing the rise-to-span ratio,shell thickness,section area of the web member,load size and the support restraint,dynamic characteristics of the structure are totally discussed.Some regular conclusions are given.
引文
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[11]赵敏行,石永久,王元清.支承点位移对点支式玻璃板承载性能的影响[J].建筑科学与工程学报,2009,26(3):110-116.ZHAO Min-xing,SHI Yong-jiu,WANG Yuan-qing.Influence of supporting point displacement on load-carrying properties ofpoint-supported glass panels[J].Journal of Architecture and Civil Engineering,2009,26(3):110-116.
[2]蓝天.空间钢结构的应用与发展[J].建筑结构学报,2001,22(4):2-8.LAN Tian.Application and developments of steel spatial structures[J].Journal of Building Structures,2001,22(4):2-8
[3]尹德钰,刘善维,钱若军.网壳结构设计[M].北京:中国建筑工业出版社,1996.YIN De-yu,LIU Shan-wei,QIAN Ruo-jun.Reticulated shell structure design[M].Beijing:China Build Ind Press,1996.
[4]张华刚,马克俭,黄勇,等.肋环型球面空腹网壳结构的静力性能分析[J].空间结构,2009,15(2):3-8.ZHANG Hua-gang,MA Ke-jian,HUANG Yong,et al.Analysis on static behavior of ribbed-type open web spherical reticu-lated shell[J].Spatial Structures.2009,15(2):3-8.
[5]杜文风,朱黎明,张慧,等.空腹网壳结构的静力稳定性与极限承载力研究[J].郑州大学学报,2008,29(3):99-102.DUWen-feng,ZHULi-ming,ZHANG Hui,et al.Study on static stability and the limited load carrying capacity of vierendeellatticed shells[J].Journal of Zhengzhou University,2008,29(3):99-102.
[6]王正光,刘福祺,林胜良.某正交空腹网壳结构抗震性能分析[J].钢结构,2006,21(6):1-3.WANG Zheng-guang,LIU Fu-qi,LIN Sheng-liang.Seismic analysis of certain orthogonal vierendeel latticed shell[J].SteelConstruction,2006,21(6):1-3.
[7]董石麟,赵阳.论空间结构的形式与分类[J].土木工程学报,2004,37(1):7-12.DONG Shi-lin,ZHAO Yang.Discussion on types and classification of spatial structrues[J].China Civil Engineering Journal,2004,37(1):7-12.
[8]李永梅,张毅刚.凯威特型索承网壳结构的自振特性及参数分析[J].世界地震工程,2007,23(1):91-97.LI Yong-mei,ZHANG Yi-gang,Dynamic characteristics of Kiewitt cable-supported latticed shells[J].World Earthquake En-gineering,2007,23(1):91-97.
[9]李峰,郭宏超,刘建毅.球面巨型网格结构动力特性及抗震分析[J].钢结构,2008,23(9):7-11.LI Feng,GUO Hong-chao,LIU Jian-yi.Dynamic character and seismic analysis of spherical reticulated mega-structure[J].Steel Construction.2008,23(9):7-11.
[10]王秀丽,王磊.单层椭球网壳的动力性能研究[J].四川建筑科学研究,2009,35(1):19-22.WANG Xiu-li,WANG Lei,Study on the dynamic performance of single layer ellipse lattice shell[J].Sichuan Building Sci-ence.2009,35(1):19-22.
[11]赵敏行,石永久,王元清.支承点位移对点支式玻璃板承载性能的影响[J].建筑科学与工程学报,2009,26(3):110-116.ZHAO Min-xing,SHI Yong-jiu,WANG Yuan-qing.Influence of supporting point displacement on load-carrying properties ofpoint-supported glass panels[J].Journal of Architecture and Civil Engineering,2009,26(3):110-116.
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