摘要
本文建立了一个三维非线性有限元计算模型，旨在用来准桷、有效地分析钢－混凝土组合结构。其中混凝土材料模型基于亚弹性正交异性理论，采用Ｓａｒｇｉｎ的非线性应力－应变方程表达式以及拉伸、压缩破坏面。钢单元采用等向强化的ＶｏｎＭｉｓｅｓ弹塑性模型，试验和计算比较表明该计算模型是一个比较简单但准确、有效的模型。
A 3D nonlinear F.E.M. computation model is presented in order to analyze thesteel-concrete composite structures. The concrete material model, where Sargin's stress -strain ex-pression and corresponding tension and compreesion failure surfaces are adopted, is based ona hypo-elastic orthotropic approach while Von Mises elasto-plastic isotropic hardening modelis employed for steel element. The comparisons between experimental and analytical resultsshow that the proposed model is a relatively simple but effective one.
出处
《地震工程与工程振动》
CSCD
北大核心
1999年第1期57-64,共8页
Earthquake Engineering and Engineering Dynamics
基金
上海市科委赞助项目
关键词
方钢管混凝土
亚弹性正交异性理论
非线性分析
Concrete-filled square steel tube, Hypo-elastic orthotropic approach, Nonlinearanalvsis
