节点刚度对单层柱面网壳地震响应及内力的影响分析
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摘要
论文首先采用壳单元Shell163建立了单层柱面网壳模型,同时利用壳单元模拟了焊接空心球节点,并通过计算验证了模拟方法的合理性。然后,通过调节空心球节点的厚度,考察了节点刚度变化对单层柱面网壳地震响应的影响,分析结果表明,在强震作用下节点刚度变化对网壳节点响应与杆件内力的影响均较大,建议在进行此类结构的动力分析时考虑节点刚度的影响。
Shell element shell 163 is used to build the single-layer cylindrical reticulated shell with real dimension welded spherical hollow joints.The load-carrying capacity of the shell element joint is tested,and the results fulfill the requirement.Then,joint stiffness is changed by changing joint thickness.The influence of joint stiffness on seismic response and tube internal force is big enough to be involved in.Consequently,this influence is recommended to be considered in the dynamic analysis of such type structure.
Shell element shell 163 is used to build the single-layer cylindrical reticulated shell with real dimension welded spherical hollow joints.The load-carrying capacity of the shell element joint is tested,and the results fulfill the requirement.Then,joint stiffness is changed by changing joint thickness.The influence of joint stiffness on seismic response and tube internal force is big enough to be involved in.Consequently,this influence is recommended to be considered in the dynamic analysis of such type structure.
引文
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[10]JGJ7-2010空间网格结构技术规程[M].北京:中国建筑工业出版社,2010.JGJ7-2010 Technical specification for space frame structures[M].Beijing:China Architecture&Building Press,2010.
[2]林智斌,桂国庆,钱若军.单层球壳结构在简单荷载作用下的动力稳定分析[J].工程力学,2006,23(6):6-10.LIN Zhibin,GUI Guoqing,QIAN Ruojun.Dynamic stability of single-layer reticulated shells under simple loads[J].Engineering Mechanics,2006,23(6):6-10.
[3]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 Xiuli,WANG Lei.Study on the dynamic performance of single layer ellipse lattice shell[J].Sichuan Building Science,2009,35(1):19-22.
[4]杨大彬,张毅刚,吴金志.增量动力分析在单层网壳倒塌评估中的应用[J].空间结构,2010,16(3):91-96.YANG Dabin,ZHANG Yigang,WU Jinzhi.Application of incremental dynamic analysis in the collapse evaluation of single-layer latticed dome[J].Spatial Structures,2010,16(3):91-96.
[5]王星,董石麟,完海鹰.焊接球节点刚度对网架内力和挠度的影响分析[J].空间结构,1996,2(4):34-40.WANG Xing,DONG Shilin,WAN Haiying.The influence of stiffness of welded spherical joints on internal force and displacement of space trusses[J].Spatial Structures,1996,2(4):34-40.
[6]张竟乐,赵金城.节点刚度对凯威特型单层球面网壳稳定性的影响[J].空间结构,2004,10(2):43-45.ZHANG Jingle,ZHAO Jincheng.The influence of joint stiffness exerted on the stability of Kiewitte-type single-layer reticulated shells[J].SpatialStructures,2004,10(2):43-45.
[7]薛万里,张其林.圆钢管焊接空心球节点受压破坏机理与试验研究[J].建筑结构学报,2009,30(5):155-161.XUE Wanli,ZHANG Qilin.Destructive mechanism and experimental study of welded hollow spherical joints connected with circular steel tubes[J].Journal of Building Structure,2009,30(5):155-161.
[8]董石麟,唐海军,赵阳等.轴力和弯矩共同作用下焊接空心球节点承载力研究与实用计算方法[J].土木工程学报,2005,38(1):21-30.DONG Shilin,TANG Haijun,ZHAO Yang,et al.Load-carrying capacity and practical calculation method for welded hollow spherical joints subjectto combined axial force and bending moment[J].China Civil Engineering Journal,2005,38(1):21-30.
[9]袁行飞,彭张立,董石麟.平面内三向轴压和弯矩共同作用下焊接空心球节点承载力[J].浙江大学学报(工学版),2007,41(9):1436-1442.YUAN Xingfei,PENG Zhangli,DONG Shilin.Load-carrying capacity of welded hollow spherical joints subject to planar tri-directional combinedaxial force and bending moment[J].Journal of Zhejiang University(Engineering Science),2007,41(9):1436-1442.
[10]JGJ7-2010空间网格结构技术规程[M].北京:中国建筑工业出版社,2010.JGJ7-2010 Technical specification for space frame structures[M].Beijing:China Architecture&Building Press,2010.
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