湖南大学学报（自然科学版）Issue(9)：23-32,10.
基于纤维模型的 RC 结构的钢筋本构关系研究∗
Research on the Constitutive Models of Steel for Reinforced Concrete Structures Based on the Fiber Model
摘要
Abstract
Two constitutive models for steel (Steel01 and Steel02)and two constitutive models for con-crete were firstly selected to simulate two pseudo static tests for reinforced concrete columns in OpenSees based on the fiber model.Then,a constitutive model in OpenSees,i.e.,Reinforcing Steel,was used to simulate the monotonic loading test,cyclic loading test,fatigue test for steel and the pseudo static test for the reinforced concrete columns.It is found that the constitutive models for concrete fibers are quite appli-cable for the numerical simulation and the results are not markedly affected by the change of the constitu-tive model for concrete fibers,while the constitutive models for steel need to be further improved because they can't perfectly meet the precision demand.Different models for steel will lead to different results.The Reinforcing Steel model can effectively improve the precision of the simulations.However,it also has some disadvantages in that it cannot clearly reflect the pinching effect of the hysteresis curves obtained from the cyclic loading tests for steel,the simulation is complex,the calculation results tend to be too con-servative and are hard to converge.关键词
非线性分析/纤维模型/本构模型/Reinforcing Steel 模型/拟静力试验Key words
nonlinear analysis/fiber-based modeling/constitutive models/Reinforcing Steel/pseudo static test分类
建筑与水利引用本文复制引用
张耀庭,赵璧归,杜晓菊,卢杰志..基于纤维模型的 RC 结构的钢筋本构关系研究∗[J].湖南大学学报（自然科学版）,2015,(9):23-32,10.基金项目
国家自然科学基金资助项目(51278218),National Natural Science Foundation of China(51278218) （51278218）
