摘要
介绍一种用于钢筋混凝土框架二阶弹塑性分析的简化单元模式。它考虑了轴力的二阶效应、横截面的塑化和塑性区长度等非线性因素的影响。利用杆件截面的弯矩—曲率关系,可以直接由弹性杆件的转角—位移方程建立单元的非线性刚度矩阵。经与试验结果比较,说明计算结果是正确的。
A simplified element model with consideration of the influences of the second -order effects, cross-section plastification and plastic zone length on the stiffness matrix is presented for second-order elasto-plastic analysis of R.C. frames . By using the moment-curvature relationships of the member section , the inelastic element stiffness matrix is derived directly from the slope-deflection equation of clastic member. The validity of the proposed clement model is checked up with the available experimental and analytical results and a satisfactory agreement is obtained.
出处
《西北建筑工程学院学报（自然科学版）》
1992年第4期1-7,共7页
Journal of Northwestern Institute of Architectural Engineering
关键词
钢筋混凝土
框架
非线性分析
simplified element, nonlinear, elasto-plasticity, curvature, plastic hinge
