| 一般半刚性节点连接框架结构分析方法 |
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| 引用本文： | 段树金,;王冉,;金坎辉.一般半刚性节点连接框架结构分析方法[J].石家庄铁道学院学报,2014(3):1-7. |
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| 作者姓名： | 段树金 ;王冉 ;金坎辉 |
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| 作者单位： | [1]石家庄铁道大学土木工程学院,河北石家庄050043; [2]聊城市规划建筑设计院有限公司,山东聊城252000; [3]河北工程技术高等专科学校,河北沧州061001 |
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| 摘 要： | 研究对象为任意节点连接和任意支撑的平面框架。一般梁单元由等截面直杆及其杆端的轴向弹簧、切向弹簧和转动弹簧组成，推导得到此类单元的刚度矩阵、单元在8种基本荷载作用下的等效节点荷载。采用Matlab语言编写了适用于一般节点非线性连接框架的静力分析程序，非线性形式为指数函数或多项式函数，可以得到结构不同连接刚度下的节点位移、杆端位移和杆端力。算例显示出节点柔度对结构受力和变形的影响。
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| 关 键 词： | 平面框架 半刚性节点 三弹簧模型 单元刚度矩阵 等效节点荷载 非线性分析 |
Analysis Method for Planar Frames with Generalized Semi-Rigid Connections |
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| Institution: | Duan Shujin, Wang Ran, Jin Kanhui ( 1. School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China; 2. Liaocheng city planning and Architectural Design Institute Co. , Ltd, Liaocheng 252000, China; 3. Hebei Engineering and Technical College, Cangzhou 061001, China) |
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| Abstract: | The planar frame with arbitrary connections and supports is studied .A new beam element is pro-posed, which consists of uniform bar and three null length springs （along rotational, transverse and axial direc-tion） at each end.The stiffness matrix of the element and equivalent nodal forces subjected to eight kinds of dif -ferent loads are derived .A program is compiled in Matlab language for calculation of static mechanical behaviour of generalized frame , in which the connection nonlinear relationship is expressed as exponential function or poly-nomial function .the results of the rigid frame and the semi-rigid frames are Compared , showing the influence of connection flexibilities on structure forces and deformation . |
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| Keywords: | planar frame semi-rigid joint three-springs mechanical model stiffness matrix of element e-quivalent nodal force vector non-linear analysis |
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