欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
Faria-Oliver模型是一个简单而有效的混凝土损伤模型.基于Faria-Oliver模型提出了混凝土单轴损伤模型,且加以修正以更好地模拟混凝土单边效应;在ABAQUS软件平台上,编制了含有钢筋修正Menegotto-Pinto模型和混凝土单轴修正Faria-Oliver损伤模型的用户材料子程序VUMAT,建立了纤维模型等效模拟方法;分别模拟了一钢筋混凝土桥墩试件的循环加载试验和一钢筋混凝土桥墩试件的振动台试验,模拟结果与试验结果基本吻合.研究表明：本文所给出的单轴本构模型及纤维模型等效模拟方法有效、适用;基于梁柱单元的钢筋混凝土桥墩地震损伤分析不仅计算效率高而且提供了地震损伤演化过程信息,具有较强的工程实用性.
英文摘要：
Faria-Oliver model is a simple and effective damage model for concrete.The uniaxial version of the Faria-Oliver damage model was proposed in the present paper.Meanwhile,the modification of Faria-Oliver model was in-troduced to describe the unilateral effect of concrete more properly.In addition,the material subroutines i.e.the modi-fied Menegotto-Pinto model for reinforcing steel and the uniaxial modified Faria-Oliver model for concrete were im-plemented into VUMAT and the equivalent modeling strategy of fiber model was established within the FEA software ABAQUS.Furthermore,the numerical simulations of a cyclic loading test and a shaking table test of the reinforced concrete（RC） bridge piers were conducted.The results of the numerical simulations agreed well with the experimental ones.The present study indicates that the aforementioned uniaxial constitutive models and the equivalent modeling strategy of fiber model are effective and the seismic analysis of RC bridge piers using beam-column elements not only has a high computational efficiency but also provides information about seismic damage evolution.
同期刊论文项目
同项目期刊论文
位置：