考虑初弯曲的半刚接钢框架稳定承载力分析  

RANALYSIS OF STABLE BEARING CAPACITY OF STEEL FRAMES WITH SEMI-RIGID CONNECTION AND ORIGINAL CURVATURE

作　　者：李晓娟[1] 王新堂[2] 顾强[3] 李秀梅[4] 李双蓓[4] 

机构地区：[1]河海大学土木工程学院,江苏南京210098 [2]宁波大学建筑工程与环境学院 [3]苏州科技学院土木工程系,江苏苏州215011 [4]广西大学土木建筑工程学院,广西南宁530004

出　　处：《工程力学》2009年第3期113-117,共5页Engineering Mechanics

基　　金：宁波市自然科学基金项目(2007A610060)

摘　　要：该文对半刚性连接平面钢框架稳定承载力进行了有限元分析,在单元刚度矩阵中考虑了节点半刚性连接、杆件初弯曲和二阶效应的影响。采用修正的Newton-Raphson增量迭代法编制了计算程序。分析结果表明:初弯曲和半刚性连接对钢框架稳定承载力的影响是不容忽视的。This paper presents a finite element method for calculating semi-rigid steel frames. The effects of connection flexibilities, original curve factors and the second order effect have been considered in the element stiffness matrixes. A program for analyzing the global stability of semi-rigid steel frames with revised Newton-Raphson process has compiled. In conclusion, the effect of original curvatures and semi-rigid connections on the global stability of steel frameworks should be taken into consideration.

关 键 词：半刚接钢框架 初弯曲 二阶效应 整体稳定分析 非线性 

分 类 号：TU973.13[建筑科学—结构工程] TU973.25