摘要
以大型通用有限元软件ABAQUS为分析平台,将混凝土精细化的La Borderie弹塑性损伤模型与钢筋由Sakai与Kawashima修正的Menegotto-Pinto模型,通过软件提供的用户材料子程序二次开发接口VUMAT嵌入到ABAQUS中。基于纤维梁柱单元的等效模拟方法,对一钢筋混凝土多层框架结构在地震作用下的损伤演化过程进行了模拟分析。结果表明:采用混凝土单轴损伤模型与纤维模型相结合的方法可直观地给出钢筋混凝土框架结构的地震损伤演化全过程,方便设计人员识别结构的抗震薄弱部位,以采取有针对性的抗震加强措施。
The refined uniaxial La Borderie elastoplastic damage model for concrete and modified Menegotto-Pinto model by Sakai and Kawashima for rebar were implemented into general-purpose FEA software ABAQUS through the user material subroutine VUMAT.Then,the seismic damage analysis of a reinforced concrete(RC) multi-storey frame structure was conducted based on the equivalent fiber model of beam-column element.The results show that the simulation method adopted in the present paper can capture the damage and failure process of the RC frame structures.It is convenient for the designers to find the weak part of the frame structures and take the corresponding seismic measures.
出处
《建筑结构》
CSCD
北大核心
2012年第S1期186-189,共4页
Building Structure
关键词
钢筋混凝土
纤维单元
单轴损伤本构模型
地震损伤
reinforced concrete
fiber element
uniaxial damage constitutive model
seismic damage
