Modeling of Collapse Performance of RC Frame Beam-column Sub-assemblage Based on ABAQUS Quasi-static Explicit Analysis

被引：0
|
作者：
Yao G. [1 ,2 ]
Xiong X. [1 ,3 ]
机构：
[1] Department of Structural Engineering, School of Civil Engineering, Tongji University, Shanghai
[2] School of Civil Engineering, Suzhou University of Science and Technology, Suzhou
[3] Key Laboratory of Ministry of Education for Advanced Civil Engineering and Materials, Tongji University, Shanghai
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2021年 / 29卷 / 02期
关键词：
ABAQUS/Explicit; Beam-column sub-assemblage; Fracture criterion; Numerical simulation; Progressive collapse; Properties of steel rebar;
D O I：
10.16058/j.issn.1005-0930.2021.02.005
中图分类号：
学科分类号：
摘要：
The progressive collapse of engineering structures resulted by earthquake, blast or vehicle impact will lead to grave consequence, which attracts the attention of researchers at home and abroad.Nowadays, extensive tests on the collapse performance of RC structures were carried out, yet the relevant numerical simulation method is already limited.By introducing the fracture criterion of ductile metal, a nonlinear finite element model of RC frame beam-column sub-assemblage was established with ABAQUS/Explicit software, which model could consider the fracture of steel rebar.During the process to modulate the model, the influences of non-design factors, including mesh approaches, selection of concrete compressive constitutive, loading rate and stiffness of restraint springs were discussed.The model was validated with the test results from the published research literatures.The results indicated that the computed load to deflection curve and horizontal-reaction-force to deflection curve had a good agreement with the experimental curves.The model was able to capture the primary response characteristics of RC beam-column sub-assemblages subjected to the loss of middle column, such as compressive arch action, tensile catenary action, fracture of rebar and so on.Besides, the effects of ultimate strength and strain of steel rebar were also investigated.It could be found that both factors had obvious influence on the performance during tensile-catenary-action stage, especially the ultimate strength. © 2021, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：296 / 307
页数：11
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