方形CFRP-钢管混凝土弯扭构件力学性能研究

Study of the Behavior of Square Concrete-Filled CFRP Steel Tubular under a Bending-Torsion Load.

作者信息

Wang Qing-Li, Gao Hang-Cheng, Peng Kuan

机构信息

School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, China.

School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China.

出版信息

Polymers (Basel). 2022 Apr 5;14(7):1472. doi: 10.3390/polym14071472.

DOI:10.3390/polym14071472

PMID:35406346

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9003417/

Abstract

To study the behavior of square concrete-filled CFRP (carbon fiber polymer) steel tubular under bending-torsional load, nine square section concrete-filled CFRP steel tubular specimens are designed. The T-θ curve and failure mode of square concrete-filled CFRP steel tubular are studied under a bending-torsional load. Based on the test results, a finite element modeling method is proposed by using the finite element software ABAQUS, and the simulation results are compared with the experimental results. The results show that the simulation is in good agreement with the experimental results. On the basis of verifying the reliability of the model, the whole stress process and parameter analysis of the component are studied, and the calculation expression of bearing capacity of square concrete-filled CFRP steel tubular under bending-torsion load is proposed. The predicted specimen-bearing capacity of the proposed calculation expression of the bearing capacity of square concrete-filled CFRP steel tubular under bending-torsion load is basically consistent with the test results.

摘要

为研究方形CFRP（碳纤维聚合物）钢管混凝土在弯扭荷载作用下的力学性能，设计了9个方形截面CFRP钢管混凝土试件。研究了方形CFRP钢管混凝土在弯扭荷载作用下的T-θ曲线和破坏模式。基于试验结果，利用有限元软件ABAQUS提出了有限元建模方法，并将模拟结果与试验结果进行了对比。结果表明，模拟结果与试验结果吻合良好。在验证模型可靠性的基础上，对方形CFRP钢管混凝土构件的全过程应力及参数进行了分析，并给出了方形CFRP钢管混凝土弯扭构件承载力的计算表达式。该计算表达式预测的方形CFRP钢管混凝土弯扭构件承载力与试验结果基本一致。