箍筋约束混凝土单轴滞回本构实用模型  

A PRACTICAL CONFINED CONCRETE CONSTITUTIVE MODEL UNDER UNIAXIAL HYSTERESIS LOAD

作　　者：齐虎[1] 李云贵[2] 吕西林[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092 [2]中国建筑科学研究院建筑工程软件研究所,北京100013

出　　处：《工程力学》2011年第9期95-102,共8页Engineering Mechanics

基　　金：国家"十一五"科技支撑计划课题项目"现代建筑设计与施工关键技术研究"(2006BAJ01B07)

摘　　要：该文深入研究了箍筋约束混凝土单轴滞回本构模型,并利用ABAQUS二次开发功能对6种典型的模型进行计算分析。通过各模型计算结果与试验结果的比较以及各模型之间的比较,从受压骨架曲线,受压滞回曲线,受拉滞回曲线3个方面,研究了各模型的准确性和计算效率。在对比分析的基础上,建立了一个与实验符合较好、且考虑复杂加载路径的混凝土单轴滞回实用本构模型。该模型受压骨架曲线采用Mander模型,受压滞回曲线采用本文提出的模型,受拉滞回曲线采用腾-邹模型。To develop a constitutive model for confined concrete under uniaxial hysteresis load, six kinds of typical models were studied and compared by the use of ABAQUS UMAT. Through the comparison between model calculations and experimental results of these models, the accuracy and computational efficiency of each model were investigated considering three aspects： compression skeleton curve, compression hysteresis curve, and tension hysteresis curve. Finally, a practical concrete uniaxial constitutive model for hysteretic loading was developed, which is capable of considering complex loading paths by using Mander model in compression skeleton, proposed model in compression range of hysteresis curve and Teng-Zou mode in tension range hysteresis curve.

关 键 词：混凝土单轴本构模型 实用本构模型 加载路径 滞回曲线 骨架曲线 

分 类 号：TP375[自动化与计算机技术—计算机系统结构]