摘要
引入塑性铰的概念，建立了空间梁单元弹塑性刚度矩阵，同时考虑几何非线性、残余应力、端部约束等的影响，给出了一套钢结构复杂体系的有限元计算方法。理论上简单易行，具有良好的可靠性，为高层钢结构力学性能的实用分析奠定了理论基础。
Using the concept of plastic hinge, the tangent stiffness matrix of spatial beam element is formed. At the same time the effect of geometry nonlinear property, residual stress and end restraint are considered. Because of its simpleness and feasibility, the suggested nonlinear finite element method establishes the theory groundwork for the mechanical analysis of tall steel buildings.
出处
《哈尔滨建筑大学学报》
2000年第6期1-7,共7页
Journal of Harbin University of Civil Engineering and Architecture
基金
国家自然科学基金!(59895410)
建设部科技攻关项目!(97- 07- 01)
关键词
高层钢结构
非线性分析
塑性铰法
有限元法
tall steel buildings
nonlinear analysis
plastic hinge
interaction yield surfaces
space beam element
finite element method
residual stress
modified Lagrange method\
