摘要
本文提出了蒙皮支撑的钢构件在静力荷载作用下的几何非线性分析方法．钢构件、蒙皮和连接件分别被离散成空间薄壁梁柱单元、正交各向异性壳单元和连接单元．采用修正的拉格朗日描述建立结构的非线性平衡方程，利用柱面弧长增量法并在每一增量步中采用修正的牛顿－拉夫逊方法进行迭代来跟踪平衡路径．通过若干算例验证了程序的正确性后，对几个试验模型进行了分析，结果表明本文提出的方法可以对蒙皮支撑的钢构件进行几何非线性分析，且计算结果与试验数值吻合良好．
The Method for geometric nonlinear analysis of diaphragm braced steel members under static loads is presented in this paper. The steelmembers, diaphragm and the connectors are subdivided and simulated asspace thin - walled beam- column elements, equivalent orthotropic shellelements and connection elements, separately. An updated Lagrangianformulation is adopted to establish the structural nonlinear equilibriumequation. Variable cylindrical arc length method has been used, togetherwith the modified Newton - Raphson method as the iteration strategy, totrace the equilibrium paths. After the program has been verified, several testmodels are analysed. The results indicate that the method presented in thispaper can analyse diaphragm-- braced steel members under static loads andthe computation results and the test data are in agreement.
出处
《哈尔滨建筑大学学报》
1996年第3期53-61,共9页
Journal of Harbin University of Civil Engineering and Architecture
基金
国家自然科学基金
关键词
钢结构
蒙皮支撑
钢构件
几何非线性
steel structures
diaphragm- bracing
steel member
geometricnonlinear
