一般半刚性节点连接框架结构分析方法  

Analysis Method for Planar Frames with Generalized Semi-Rigid Connections

作　　者：段树金[1] 王冉[1,2] 金坎辉 

机构地区：[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

出　　处：《石家庄铁道大学学报（自然科学版）》2014年第3期1-7,28,共8页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

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。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 .

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 

分 类 号：TU311[建筑科学—结构工程]