悬索及悬索-框架结构的几何非线性分析  

SECONE-ORDER ANALYSIS AND DESIGN OF CABLES AND CABLED-FRAMES

作　　者：舒赣平[1] 范圣刚[1] 王建峰[1] 刘辉[1] 陈绍礼[2] 

机构地区：[1]东南大学,南京210096 [2]香港理工大学

出　　处：《工业建筑》2002年第5期5-10,共6页Industrial Construction

摘　　要：运用修正Lagrange坐标描述 ,引进五节点曲线索单元和四次多项式为位移插值函数 ,基于非线性应变定义 ,推导了悬索单元的切线刚度矩阵 ,采用刚度凝聚方法 ,大大减少了计算机的存储和计算量 ,并使得曲线索单元能与PEP单元相结合 ,实现对大跨度和复杂的悬索及悬索 -框架结构全过程的几何非线性分析与设计。算例计算结果表明 ,该方法精度很高 。Based on the Lagrangian formulation and a forth order polynomial displacement function,the tangent stiffness matrix for five nodes curved cable element is derived,and statically condensed to a simple form readily for incorporation into a frame analysis computer program utilizing the pointwise equilibrium polynomial(PEP)element with initial imperfection and the “Non linear integrated analysis and design(NIDA)”method for design and non linear analysis of cabled structures.Numerical examples demonstrate the robustness and practicality of the proposed method for analysis and design of cables and cable frame systems allowing for the second order effects.

关 键 词：悬索结构 悬索-框架结构 非线性分析 曲线索单元 

分 类 号：TU393.3[建筑科学—结构工程]