CDP模型参数计算及取值方法验证  

CDP Model Parameters Calculation and Value Method Verification

作　　者：李清富[1] 匡一航 郭威[1] LI Qingfu;KUANG Yihang;GUO Wei(School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China)

机构地区：[1]郑州大学水利科学与工程学院,河南郑州450001

出　　处：《郑州大学学报（工学版）》2021年第2期43-48,共6页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(51679220);水利部堤防安全与病害防治工程技术研究中心开放课题基金项目(2018002)。

摘　　要：为了将混凝土结构设计规范中的混凝土应力-应变曲线应用到ABAQUS混凝土塑性损伤模型中,对混凝土塑性损伤模型参数计算方法及损伤因子的取值范围进行了研究,以1根简支梁受弯试验为例,对混凝土应力-应变曲线截断处及损伤因子的取值进行标定。为了验证所提模型参数计算方法及取值的合理性和准确性,选取了2根简支梁和1片剪力墙进行有限元模拟,结果表明:梁的开裂荷载、极限荷载以及荷载-跨中挠度曲线的模拟结果与试验结果吻合性较好,满足工程精度要求,混凝土应力-应变曲线截断处及损伤因子的取值是准确可靠的。To apply the concrete stress-strain curve in the concrete structure design code to the ABAQUS concrete plastic damage model,the calculation method of the concrete plastic damage model parameter and the value range of the damage factor were studied,taking a simple supported beam bending test as an example,the truncation of the stress-strain curve of concrete and the value of the damage factor were calibrated.In order to verify the rationality and accuracy of the calculation method of the model parameters and the values in this paper,three sets of specimens including 2 simply supported beams and 1 shear wall were selected for finite element simulation.The results showed that the simulation results and tests of the beam cracking load,ultimate load,load-span deflection curve and shear wall horizontal force-displacement curve were in good agreement and could meet the requirements of engineering accuracy.The truncation of the stress-strain curve of concrete and the value of the damage factor were accurate and reliable.

关 键 词：ABAQUS 混凝土塑性损伤模型 模型参数 损伤因子 本构模型 

分 类 号：TU313[建筑科学—结构工程]