半刚性连接焊接空心球网壳弹塑性分析的短杆模型
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摘要
提出了一种考虑焊接空心球节点半刚性网壳弹塑性分析的"短杆模型",即采用等效短杆模拟焊接空心球节点,通过对质量、横截面积及惯性矩的折算来模拟球的质量及初始刚度,并利用自定义PMM塑性铰模拟焊接空心球节点塑性工作阶段随轴力变化的弯曲刚度。在SAP2000有限元软件中实现了该计算模型的导入,并通过算例证明了采用该模型进行弹塑性分析的可行性。"短杆模型"适用于半刚性连接焊接空心球网壳的静动力弹塑性分析,借助它可以更准确地分析半刚性连接焊接空心球网壳塑性阶段的真实反应和实际工作性能。
The short-member model considering the semi-rigidity of welded hollow spherical joints is presented.Equivalent short-member is used to simulate the welded hollow spherical joint.It simulates the mass and the initial stiffness of the joint through the conversions of mass,cross-sectional area and moment of inertia.The bending rigidity changing with the axial force in the plastic phase is simulated through self-defined PMM plastic hinge.In the SAP2000 finite element software,the calculation model is introduced and proved to be feasible in elastic-plastic analysis though calculation examples.Short-member model is appropriate to static and dynamic elastic-plastic analysis of reticulated shell considering the semi-rigidity of welded hollow spherical joints.The actual behavior and work performance of the reticulated shell with semi-rigid connections in plastic phase can be analyzed accurately through it.
The short-member model considering the semi-rigidity of welded hollow spherical joints is presented.Equivalent short-member is used to simulate the welded hollow spherical joint.It simulates the mass and the initial stiffness of the joint through the conversions of mass,cross-sectional area and moment of inertia.The bending rigidity changing with the axial force in the plastic phase is simulated through self-defined PMM plastic hinge.In the SAP2000 finite element software,the calculation model is introduced and proved to be feasible in elastic-plastic analysis though calculation examples.Short-member model is appropriate to static and dynamic elastic-plastic analysis of reticulated shell considering the semi-rigidity of welded hollow spherical joints.The actual behavior and work performance of the reticulated shell with semi-rigid connections in plastic phase can be analyzed accurately through it.
引文
[1]罗永峰,沈祖炎,胡学仁.单层网壳弹塑性稳定分析[C]//.新型空间结构论文集,杭州:浙江大学出版社,1994:210-218.Luo Yongfeng,Shen Zuyan,Hu Xueren.Elastic-plastic stability analysis of single-layer reticulated shells with semi-rigid Joints[C]//Space Struc-tures Technology,Hangzhou:Zhejiang University Press,1994:210-218.
[2]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):24-32.Wang Xing,Dong Shilin.Tangengt stiffness matrix of latticed shell considering joint’s stiffness[J].Engineering Mechanics,1999,16(4):24-32.
[3]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].SpatialStructuress,2004,10(2):43-45.
[4]徐菁,杨松森,容健.节点刚度对凯威特型单层球面网壳内力的影响[J].钢结构,2005,20(4):15-17.Xu Jing,Yang Songsen,Rong Jian.Influence exerted on the internal forces of kiewitt single-layered spherical shells by the stiffeness of joints[J].Steel Construction,2005,20(4):15-17.
[5]徐菁,杨松森,郑少瑛,等.单层球面网壳节点刚性反应的内力分析研究[J].空间结构,2005,11(3):51-53.Xu Jing,Yang Songsen,Zheng Shaoying,et al.Internal force analysis of single-layer reticulated shells based on the stiffness of joints[J].SpatialStructures,2005,11(3):51-53.
[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,2006.Cui Meiyan.Stability analysis of single-ayer spherical reticulated shells with semi-rigidity of joint[D].Harbin:Harbin Institute of Technology,2006.
[7]马会环,商文念.K8型半刚性节点网壳的弹塑性稳定分析[J].低温建筑技术,2008,10(1):79-80.Ma Huihuan,Shang Wennian.Elasto-plastic stability analysis of K8 single-layer reticulated shells with semi-rigid joints[J].LowTemperature Ar-chitecture Technology,2008,10(1):79-80.
[8]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研究[J].世界地震工程,2008,23(3):32-40.Zhang Chuancheng,Zhang Baoqin,Zhang Ailin.Stability behavior of joint stiffness on the single-layer reticulated shell of badminton arena for2008Olympic Games[J].World Earthquake Engnieernig,2008,23(3):32-40.
[9]廖俊.考虑节点弹塑性的焊接空心球网壳动力分析方法[D].北京:北京工业大学,2010.Liao Jun.The method for dynamic analysis on reticulated shell considering the elastoplasticity of welded hollowspherical joints[D].Beijing:BeijingUniversity of Technology,2010.
[10]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[M]。北京:人民交通出版社,2006.Beijing Gold Civil Engineering Software Technology Co.,Ltd.,China Building Standard Design&Research Institute.Chinese Guide of SAP2000Software[M].Beijing:China Communication Press,2006.
[2]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):24-32.Wang Xing,Dong Shilin.Tangengt stiffness matrix of latticed shell considering joint’s stiffness[J].Engineering Mechanics,1999,16(4):24-32.
[3]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].SpatialStructuress,2004,10(2):43-45.
[4]徐菁,杨松森,容健.节点刚度对凯威特型单层球面网壳内力的影响[J].钢结构,2005,20(4):15-17.Xu Jing,Yang Songsen,Rong Jian.Influence exerted on the internal forces of kiewitt single-layered spherical shells by the stiffeness of joints[J].Steel Construction,2005,20(4):15-17.
[5]徐菁,杨松森,郑少瑛,等.单层球面网壳节点刚性反应的内力分析研究[J].空间结构,2005,11(3):51-53.Xu Jing,Yang Songsen,Zheng Shaoying,et al.Internal force analysis of single-layer reticulated shells based on the stiffness of joints[J].SpatialStructures,2005,11(3):51-53.
[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,2006.Cui Meiyan.Stability analysis of single-ayer spherical reticulated shells with semi-rigidity of joint[D].Harbin:Harbin Institute of Technology,2006.
[7]马会环,商文念.K8型半刚性节点网壳的弹塑性稳定分析[J].低温建筑技术,2008,10(1):79-80.Ma Huihuan,Shang Wennian.Elasto-plastic stability analysis of K8 single-layer reticulated shells with semi-rigid joints[J].LowTemperature Ar-chitecture Technology,2008,10(1):79-80.
[8]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研究[J].世界地震工程,2008,23(3):32-40.Zhang Chuancheng,Zhang Baoqin,Zhang Ailin.Stability behavior of joint stiffness on the single-layer reticulated shell of badminton arena for2008Olympic Games[J].World Earthquake Engnieernig,2008,23(3):32-40.
[9]廖俊.考虑节点弹塑性的焊接空心球网壳动力分析方法[D].北京:北京工业大学,2010.Liao Jun.The method for dynamic analysis on reticulated shell considering the elastoplasticity of welded hollowspherical joints[D].Beijing:BeijingUniversity of Technology,2010.
[10]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[M]。北京:人民交通出版社,2006.Beijing Gold Civil Engineering Software Technology Co.,Ltd.,China Building Standard Design&Research Institute.Chinese Guide of SAP2000Software[M].Beijing:China Communication Press,2006.
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