钢管树状仿生结构的稳定性设计
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(1 北京市建筑设计研究院,北京 100045; 2 浙江大学空间结构中心,杭州 310027)[摘要]钢管树状结构作为仿生结构受力合理,但设计困难。结合具体工程,总结了分杈类和曲线缠绕类两类典型的树状结构形式。探讨了两类钢管树状仿生结构的稳定性设计方法。通过理论推导和有限元验证,对树状结构稳定性设计时计算长度系数的取值方法提出了建议,供工程设计时参考。[关键词]树状结构;稳定性;仿生;钢管柱;计算长度系数Stability design on the dendritic structure with steel tubesMa Hongbu1,Shen Li1,Gao Boqing2,Zhu Zhongyi1,Zhang Yanping1, Wang Tieying1(1 Beijing Institute of Architectural Design,Beijing 100045,China;2 Space Structures Research Center,Zhejiang University,Hangzhou 310027,China)Abstract:The dendritic structure with steel tubes which is a kind of bionic structures has rational mechanical behavior,but is hard to design.A summary was made on two types of dendritic structures with steel tubes in engineering cases. The methods of stability design of the two types of dendritic bionic structures with steel tubes were discussed。It is advised to determine the magnitude of effective length coefficient when designing the stability of dendritic structure through theoretical derivation and finite element methods. The principles are proposed for design of the structure.Keywords: dendritic structure; stability; bionic; steel tubes; effective length coefficient作者简介:马洪步,硕士,助理工程师,Email:mahongbu@163.com。参考文献[1]蔡长赓.树状结构在公共建筑中的应用[J].工程建设与设计,2003,3(1):34-35.[2]王明贵,颜锋.钢管树状结构设计[J].空间结构,2006,21(89):47-49.[3]刘开强,彭伟.计算长度系数法在框架稳定分析中的运用[J].四川建筑科学研究,2007,33(3):36-39.[4]郭彦林,邓科,林冰.梭形柱的稳定性能及设计方法研究[J].工业建筑,2007,37(7):92-95.