单层柱面网壳相贯节点刚度影响分析
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摘要
节点刚度与单层网壳结构的刚度与稳定性关系密切。采用了可以真实模拟相贯节点单层柱面网壳的多尺度计算模型,在节点域内采用精度较高的壳单元,在节点域外采用梁单元,节点域与杆端在连接面形心处位移与转角保持连续。该计算模型可以较为准确地反映相贯节点的力学性能,计算精度高、单元数量少,可同时进行结构整体与节点局部的计算分析。运用该模型全面考察了相贯节点刚度对单层柱面网壳跨中挠度、动力特性与屈曲性能的影响。通过对相贯节点进行补强,能够有效增强节点的刚度,采用梁单元模型即可进行单层网壳结构的计算分析,结构设计简便、结构效能较高。
The stiffness of tubular joint has a significant impact on the rigidity and stability of single-layer latticed shell.This paper presents a multi-scale model for the tubular joints in a single-layer latticed cylindrical shell.High quality shell elements are applied in the connection zone,and beam elements are applied to simulate the pipes far from the connection.The displacement and rotation angle of the connection and beam ends remain continuous at the centroid of joint interface.This analytical model can predict mechanical behavior of tubular joint with good accuracy and the amount of elements is small.Also it is capable of analyzing both detailed joint and the entire structure.By utilizing this model,the effect of tubular joint stiffness on single-layer latticed cylindrical shell is studied,including its mid-span deflection,dynamic characteristics and buckling behavior.The results show the joint stiffness can be significantly enhanced by applying joint strengthening measures.In conclusion,the analytical model presented herein can be applied to evaluate the behavior of single-layer latticed cylindrical shell.The simplicity and accuracy make it attractive in both design and analysis situations.
The stiffness of tubular joint has a significant impact on the rigidity and stability of single-layer latticed shell.This paper presents a multi-scale model for the tubular joints in a single-layer latticed cylindrical shell.High quality shell elements are applied in the connection zone,and beam elements are applied to simulate the pipes far from the connection.The displacement and rotation angle of the connection and beam ends remain continuous at the centroid of joint interface.This analytical model can predict mechanical behavior of tubular joint with good accuracy and the amount of elements is small.Also it is capable of analyzing both detailed joint and the entire structure.By utilizing this model,the effect of tubular joint stiffness on single-layer latticed cylindrical shell is studied,including its mid-span deflection,dynamic characteristics and buckling behavior.The results show the joint stiffness can be significantly enhanced by applying joint strengthening measures.In conclusion,the analytical model presented herein can be applied to evaluate the behavior of single-layer latticed cylindrical shell.The simplicity and accuracy make it attractive in both design and analysis situations.
引文
[1]李丽,范重,张宇,等.佛山高明体育馆钢结构设计[J].建筑结构,2013,43(增刊):281-285Li Li,Fan Zhong,Zhang Yu,el al.Design on large span steel structure of Foshan Gaoming gymnasium[J].Building Structure,2013,43(S1):281-285(in Chinese)
[2]沈世钊,陈昕.网壳结构稳定性[M].北京:科学出版社,1998Shen Shizhao,Chen Xin.Stability of reticulated shell structure[M].Beijing:Science Press,1998(in Chinese)
[3]Gioncu V.Buckling of reticulated shells:state-of-the-art[J].International Journal of Space Structures,1995,10(1):1-46
[4]Shibata R,Kato S,Yamada S.Experimental study on the ultimate strength of single-layer reticular domes[C]//Proceeding of the Fourth International Conference of Space Structures.Guildford:University of Surry,1993:387-395
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[6]崔美艳.半刚性节点单层球面网壳稳定性分析[D].哈尔滨:哈尔滨工业大学,2006Cui Meiyan.Stability analysis of single layer spherical reticulated shells with semi-rigidity of joint system[D].Harbin:Harbin Institute of Technology,2006(in Chinese)
[7]张传成,张宝勤,张爱林.节点刚度对2008奥运羽毛球热身馆单层网壳稳定性影响研究[J].世界地震工程,2007,23(3):32-40Zhang Chuancheng,Zhang Baoqin,Zhang Ailin.Stability behavior of joint stiffness on the single layer reticulated shell of badminton arena for 2008 Olympic Games[J].World Earthquake Engineering,2007,23(3):32-40(in Chinese)
[8]董石麟,郑晓清.节点刚、铰接时环向折线形单层球面网壳静力和稳定性能的分析研究[J].建筑钢结构进展,2013,15(6):1-11Dong Shilin,Zheng Xiaoqing.Analysis on static behavior and stability of circumferentially folded plate single-layer reticulated spherical shells under different joint connection schemes[J].Progress in Steel Building Structures,2013,15(6):1-11(in Chinese)
[9]李兆霞,孙正华,郭力.结构损伤一致多尺度模拟和分析方法[J].东南大学学报:自然科学版,2007,37(2):251-260Li Zhaoxia,Sun Zhenghua,Guo Li.Concurrent multi-scale modeling of structures and damage analyses[J].Journal of Southeast University:Natural Science,2007,37(2):251-260(in Chinese)
[10]范重,彭翼,王喆,等.国家体育场主结构扭曲箱形构件设计研究[J].建筑结构学报,2007,28(2):97-111Fan Zhong,Peng Yi,Wang Zhe,el al.Design and research twisted box-sections of the structure for the National Stadium[J].Journal of Building Structures,2007,28(2):97-111(in Chinese)
[11]陆新征,林旭川,叶列平.多尺度有限元建模方法及应用[J].华中科技大学学报,2008,25(4):76-80Lu Xinzheng,Lin Xuchuan,Ye Lieping.Multi-scale finite element modeling and its application in structural analysis[J].Journal of Huazhong University of Science and Technology,2008,25(4):76-80(in Chinese)
[12]罗尧治,刘海锋,许贤.焊接球节点刚度对网壳结构有限元分析精度的影响[J].工程力学,2013,30(1):350-358Luo Yaozhi,Liu Haifeng,Xu Xian.Rigidity of welded hollow spherical joints on finite element analysis precision of reticulated shells[J].Engineering Mechanics,2013,30(1):350-358(in Chinese)
[13]丁芸孙.圆管结构相贯节点几个设计问题的探讨[J].空间结构,2002,8(2):56-64Ding Yunsun.Discussion on some design problems in circular tubular joints[J].Spatial Structures,2002,8(2):56-64(in Chinese)
[14]陈以一,陈扬骥.钢管结构相贯节点的研究现状[J].建筑结构,2002,32(7):52-55Chen Yiyi,Chen Yangji.Research status of tubular joints of steel tubular structure[J].Building Structure,2002,32(7):52-55(in Chinese)
[15]JGJ 7—2010空间网格结构技术规程[S].北京:中国建筑工业出版,2010JGJ 7—2010 Technical Specification for Space Frame Structures[S].Beijing:China Architecture&Building Press,2010(in Chinese
[2]沈世钊,陈昕.网壳结构稳定性[M].北京:科学出版社,1998Shen Shizhao,Chen Xin.Stability of reticulated shell structure[M].Beijing:Science Press,1998(in Chinese)
[3]Gioncu V.Buckling of reticulated shells:state-of-the-art[J].International Journal of Space Structures,1995,10(1):1-46
[4]Shibata R,Kato S,Yamada S.Experimental study on the ultimate strength of single-layer reticular domes[C]//Proceeding of the Fourth International Conference of Space Structures.Guildford:University of Surry,1993:387-395
[5]王星,董石麟.考虑节点刚度的网壳杆件切线刚度矩阵[J].工程力学,1999,16(4):24-32Wang Xing,Dong Shilin.Tangengt stiffness matrix of members of latticed shell considering joint’s stiffness[J].Engineering Mechanics,1999,16(4):24-32(in Chinese)
[6]崔美艳.半刚性节点单层球面网壳稳定性分析[D].哈尔滨:哈尔滨工业大学,2006Cui Meiyan.Stability analysis of single layer spherical reticulated shells with semi-rigidity of joint system[D].Harbin:Harbin Institute of Technology,2006(in Chinese)
[7]张传成,张宝勤,张爱林.节点刚度对2008奥运羽毛球热身馆单层网壳稳定性影响研究[J].世界地震工程,2007,23(3):32-40Zhang Chuancheng,Zhang Baoqin,Zhang Ailin.Stability behavior of joint stiffness on the single layer reticulated shell of badminton arena for 2008 Olympic Games[J].World Earthquake Engineering,2007,23(3):32-40(in Chinese)
[8]董石麟,郑晓清.节点刚、铰接时环向折线形单层球面网壳静力和稳定性能的分析研究[J].建筑钢结构进展,2013,15(6):1-11Dong Shilin,Zheng Xiaoqing.Analysis on static behavior and stability of circumferentially folded plate single-layer reticulated spherical shells under different joint connection schemes[J].Progress in Steel Building Structures,2013,15(6):1-11(in Chinese)
[9]李兆霞,孙正华,郭力.结构损伤一致多尺度模拟和分析方法[J].东南大学学报:自然科学版,2007,37(2):251-260Li Zhaoxia,Sun Zhenghua,Guo Li.Concurrent multi-scale modeling of structures and damage analyses[J].Journal of Southeast University:Natural Science,2007,37(2):251-260(in Chinese)
[10]范重,彭翼,王喆,等.国家体育场主结构扭曲箱形构件设计研究[J].建筑结构学报,2007,28(2):97-111Fan Zhong,Peng Yi,Wang Zhe,el al.Design and research twisted box-sections of the structure for the National Stadium[J].Journal of Building Structures,2007,28(2):97-111(in Chinese)
[11]陆新征,林旭川,叶列平.多尺度有限元建模方法及应用[J].华中科技大学学报,2008,25(4):76-80Lu Xinzheng,Lin Xuchuan,Ye Lieping.Multi-scale finite element modeling and its application in structural analysis[J].Journal of Huazhong University of Science and Technology,2008,25(4):76-80(in Chinese)
[12]罗尧治,刘海锋,许贤.焊接球节点刚度对网壳结构有限元分析精度的影响[J].工程力学,2013,30(1):350-358Luo Yaozhi,Liu Haifeng,Xu Xian.Rigidity of welded hollow spherical joints on finite element analysis precision of reticulated shells[J].Engineering Mechanics,2013,30(1):350-358(in Chinese)
[13]丁芸孙.圆管结构相贯节点几个设计问题的探讨[J].空间结构,2002,8(2):56-64Ding Yunsun.Discussion on some design problems in circular tubular joints[J].Spatial Structures,2002,8(2):56-64(in Chinese)
[14]陈以一,陈扬骥.钢管结构相贯节点的研究现状[J].建筑结构,2002,32(7):52-55Chen Yiyi,Chen Yangji.Research status of tubular joints of steel tubular structure[J].Building Structure,2002,32(7):52-55(in Chinese)
[15]JGJ 7—2010空间网格结构技术规程[S].北京:中国建筑工业出版,2010JGJ 7—2010 Technical Specification for Space Frame Structures[S].Beijing:China Architecture&Building Press,2010(in Chinese
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