CFRP加固方钢管混凝土在弯-扭荷载作用下的性能研究 王庆利.pdf

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工业建筑
CFRP-钢管混凝土的弯-扭承载力的计算表达式所预测的试件承载力与
试验结果基本一致。
关键词 CFRP；方钢管混凝土；弯扭性能；试验研究；有限元分析
DOI:
Study on Behavior of Square CFRP Concrete Filled Steel Tubular under Bending-
Torsion Load
Qing-li Wang1, Yi-jing Zhang1, Kuan Peng2
(1. School of Civil Engineering, University of Science and Technology Liaoning, Anshan, 114051, China
2. School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, 610500, China)
Abstract In order to study the behavior of square section CFRP concrete-filled steel tubular under bending-torsion load,
based on the experimental study of behavior of nine square section CFRP concrete-filled steel tubular under bending-torsion
load, the T- curve and failure mode of square CFRP concrete-filled steel tubular were simulated by using the finite element
software ABAQUS, and the simulation results were 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 wh ole
stress process and parameter analysis of the component are studied. On the basis of finite element and test, the calculation
expression of bearing capacity of square CFRP concrete-filled steel tubular under bending-torsion load is proposed. The
research shows that the member bearing capacity increases significantly with the increase of concrete strength, steel yield
strength and steel content, increases slightly with the increase of CFRP layers, and decreases slightly with the increase of
moment ratio. The predicted specimen bearing capacity of the proposed calculation expression of bearing capacity of square
CFRP concrete-filled steel tubular under bending-torsion load is bas