单层柱面网壳相贯节点刚度模拟方法研究
|
摘要
节点刚度对单层网壳结构的变形与稳定性能影响显著.本文提出一种相贯节点刚度的计算方法,通过梁元模型与壳元模型之间的对比,可以较为准确地模拟相贯节点的轴向刚度以及面内与面外抗弯刚度.对T型、Y型、X型、K型等多种相贯节点的变形性能、弹簧刚度及其影响因素进行了深入分析,研究了支管杆端变形与主管径厚比的关系,探讨了梁元模型对单层网壳结构的适用条件.为了验证该计算方法的正确性,分别采用梁元-弹簧模型与多尺度分析模型,对单层柱面网壳结构的变形性能与屈曲特征值进行了分析,结果表明两种模型具有较好的一致性.最后,给出了在单层柱面网壳结构设计时,考虑相贯节点刚度的相关建议.
Joint stiffness has a notably significant effect on the deformation and stability of the single-layer latticed shell.By comparing the beam element model with the shell element model,this paper proposed an analytical method for spring stiffness of tubular joints which can simulate the axial stiffness,in-plane bending stiffness and out-of-plane bending stiffness of tubular joints more accurately.The paper made a thorough analysis of the deformation,spring stiffness and its influencing factors of the T-Joint,Y-Joint,XJoint and K-Joint.Besides,it studied the relationship between the beam-end deformation of web member and chords′diameter-thickness ratio.Then the applicable condition of the beam element model on the single-layer latticed shell was investigated.In order to verify the correctness of the method,both beam-spring model and multi-scale model are employed to analyze the deformation and buckling eigenvalue of the singlelayer latticed reticulated shell.The results displayed a good consistency between the two models.Finally,the paper made relevant suggestions about taking the tubular joint stiffness into consideration in the design of single-layer latticed cylindrical shell.
Joint stiffness has a notably significant effect on the deformation and stability of the single-layer latticed shell.By comparing the beam element model with the shell element model,this paper proposed an analytical method for spring stiffness of tubular joints which can simulate the axial stiffness,in-plane bending stiffness and out-of-plane bending stiffness of tubular joints more accurately.The paper made a thorough analysis of the deformation,spring stiffness and its influencing factors of the T-Joint,Y-Joint,XJoint and K-Joint.Besides,it studied the relationship between the beam-end deformation of web member and chords′diameter-thickness ratio.Then the applicable condition of the beam element model on the single-layer latticed shell was investigated.In order to verify the correctness of the method,both beam-spring model and multi-scale model are employed to analyze the deformation and buckling eigenvalue of the singlelayer latticed reticulated shell.The results displayed a good consistency between the two models.Finally,the paper made relevant suggestions about taking the tubular joint stiffness into consideration in the design of single-layer latticed cylindrical shell.
引文
[1]GIONCU V.Buckling of reticulated shells:state-of-theart[J].International Journal of Space Structures,1995,10(1):101-146.
[2]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.UK:University of Surrey,1993:387-395.
[3]MOHAMMAD R C.Semi-rigidity of Connections in Space Structures[D].Guildford:University of Surrey,1997.
[4]LOUREIRO E P S A.One Step Method for Buckling Analysis of Single Layer Lattice Structure with Semi-Rigid Connections[D].Spain:University of A Coruna,2002.
[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):24-32.WANG Xing,DONG Shi-ling.Tangent stiffness matrix of members of latticed shell considering joint’s stiffness[J].Engineering Mechanics,1999,16(4):24-32.
[6]罗永峰,沈祖炎.网壳结构节点体对其承载性能的影响[J].同济大学学报,1995,23(1):21-25.LUO Yong-feng,SHEN Zu-yan.Effects of the joint size of the reticulated shell on its loading capacity[J].Journal of Tongji University,1995,23(1):21-25.
[7]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 Mei-yan.Stability Analysis of Single Layer Spherical Reticulated Shells with Semi-Rigidity of Joint System[D].Harbin:Harbin Institute of Technology,2006.
[8]马会环.半刚性节点单层球面网壳稳定性及其节点性能研究[D].哈尔滨:哈尔滨工业大学硕士学位论文.2007.MA Hui-huan.Stability Analysis of Semi-Rigidity Single Layer Spherical Reticulated Shells and Its Joint System[D].Harbin:Harbin Institute of Technology,2007.
[9]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):32-40.ZHANG Chuan-cheng,ZHANG Bao-qin,ZHANG Ailin.Stability behavior of joint stiffness on the single layer reticulated shell of Badminton Arena for 2008Olympic Games[J].World Earthquake Engineering,2007,23(3):32-40.
[10]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):52-55.CHEN Yi-yi,CHEN Yang-ji.Research status of tubular joints of steel tubular structure[J].Building Structure,2002,32(7):52-55.
[11]陈以一,王伟,赵宪忠,等.圆钢管相贯节点抗弯刚度和承载力实验[J].建筑结构学报,2001,22(6),25-30.CHEN Yi-yi,WANG Wei,ZHAO Xian-zhong.Experiments on bending rigidity and resistance of unstiffened tubular joints[J].Journal of Building Structures,2001,22(6):25-30.
[12]邱国志.圆钢管X型相贯节点刚度及其对结构整体性能的影响[D].上海:上海交通大学,2008.QIU Guo-zhi.Rigidity of Unstiffened Circular Tubular X-Joints and Its Effects on Global Performance of Steel Structures[D].Shanghai:Shanghai Jiaotong University,2008.
[13]邱国志,赵金城.X型圆钢管相贯节点刚度试验[J].上海交通大学学报,2008,42(6):966-970.QIU Guo-zhi,ZHAO Jin-cheng.Experimental research on rigidity of circular tubular X-joints[J].Journal of Shanghai Jiaotong University,2008,42(6):966-970.
[14]邱国志,赵金城.相贯节点刚度对某单层网壳结构整体稳定性的影响[J].建筑结构,2010,40(3):52-55.QIU Guo-zhi,ZHAO Jin-cheng.Influence of joint stiffness on stability behavior of a single-layer reticulated shell[J].Building Structrue,2010,40(3):52-55.
[15]JGJ 7-2010.空间网格结构技术规程[S].北京:中国建筑工业出版社,2010.
[2]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.UK:University of Surrey,1993:387-395.
[3]MOHAMMAD R C.Semi-rigidity of Connections in Space Structures[D].Guildford:University of Surrey,1997.
[4]LOUREIRO E P S A.One Step Method for Buckling Analysis of Single Layer Lattice Structure with Semi-Rigid Connections[D].Spain:University of A Coruna,2002.
[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):24-32.WANG Xing,DONG Shi-ling.Tangent stiffness matrix of members of latticed shell considering joint’s stiffness[J].Engineering Mechanics,1999,16(4):24-32.
[6]罗永峰,沈祖炎.网壳结构节点体对其承载性能的影响[J].同济大学学报,1995,23(1):21-25.LUO Yong-feng,SHEN Zu-yan.Effects of the joint size of the reticulated shell on its loading capacity[J].Journal of Tongji University,1995,23(1):21-25.
[7]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 Mei-yan.Stability Analysis of Single Layer Spherical Reticulated Shells with Semi-Rigidity of Joint System[D].Harbin:Harbin Institute of Technology,2006.
[8]马会环.半刚性节点单层球面网壳稳定性及其节点性能研究[D].哈尔滨:哈尔滨工业大学硕士学位论文.2007.MA Hui-huan.Stability Analysis of Semi-Rigidity Single Layer Spherical Reticulated Shells and Its Joint System[D].Harbin:Harbin Institute of Technology,2007.
[9]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):32-40.ZHANG Chuan-cheng,ZHANG Bao-qin,ZHANG Ailin.Stability behavior of joint stiffness on the single layer reticulated shell of Badminton Arena for 2008Olympic Games[J].World Earthquake Engineering,2007,23(3):32-40.
[10]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):52-55.CHEN Yi-yi,CHEN Yang-ji.Research status of tubular joints of steel tubular structure[J].Building Structure,2002,32(7):52-55.
[11]陈以一,王伟,赵宪忠,等.圆钢管相贯节点抗弯刚度和承载力实验[J].建筑结构学报,2001,22(6),25-30.CHEN Yi-yi,WANG Wei,ZHAO Xian-zhong.Experiments on bending rigidity and resistance of unstiffened tubular joints[J].Journal of Building Structures,2001,22(6):25-30.
[12]邱国志.圆钢管X型相贯节点刚度及其对结构整体性能的影响[D].上海:上海交通大学,2008.QIU Guo-zhi.Rigidity of Unstiffened Circular Tubular X-Joints and Its Effects on Global Performance of Steel Structures[D].Shanghai:Shanghai Jiaotong University,2008.
[13]邱国志,赵金城.X型圆钢管相贯节点刚度试验[J].上海交通大学学报,2008,42(6):966-970.QIU Guo-zhi,ZHAO Jin-cheng.Experimental research on rigidity of circular tubular X-joints[J].Journal of Shanghai Jiaotong University,2008,42(6):966-970.
[14]邱国志,赵金城.相贯节点刚度对某单层网壳结构整体稳定性的影响[J].建筑结构,2010,40(3):52-55.QIU Guo-zhi,ZHAO Jin-cheng.Influence of joint stiffness on stability behavior of a single-layer reticulated shell[J].Building Structrue,2010,40(3):52-55.
[15]JGJ 7-2010.空间网格结构技术规程[S].北京:中国建筑工业出版社,2010.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心