钢筋混凝土偏压构件考虑徐变的非线性分析  

NONLINEAR ANALYSIS OF ECCENTRICALLY LOADED REINFORCED COMPONENT CONSIDERING THE EFFECT OF CREEP

作　　者：曹双寅[1] 朱伯龙[1] 钮宏[1] 

机构地区：[1]同济大学

出　　处：《工程力学》1989年第2期26-34,共9页Engineering Mechanics

摘　　要：本文对长期荷载作用下钢筋混凝土偏心受压柱的内力和变形进行了试验和理论研究。在试验的基础上,提出了混凝上非线性徐变模式。采用增量法和迭代法,通过计算机分析了受长期荷载作用下钢筋混凝土偏压柱的内力和变形的变化全过程。计算中考虑了材料的非线性、细长构件的二次弯矩作用以及变形和内力的重分布。试验和理论计算的结果符合较好。In this paper, the developing process of deformation and stress in eccentrically loaded reinforced concrete columns under sustained load is described. A new nonlinear creep model for concrete is given based on the experimental results. A step-by-step method is used to analyse the deformation, stress and their redistribution by computers. In the analysis, the nonlinear property and second moment effects of slender columns as well as the redistribution of stress and strain are taken into accounted. The error between the experimental and the calculated results is tolerable.

关 键 词：钢筋混凝土 柱 徐变 偏压 

分 类 号：TU375.301[建筑科学—结构工程]