采用无粘结碳纤维增强复合材料层板加固的轴心受压钢构件的有限元分析

Finite Element Analysis of Axial Compression Steel Members Strengthened with Unbonded CFRP Laminates.

作者信息

Yoresta Fengky Satria, Nhut Phan Viet, Matsumoto Yukihiro

机构信息

Department of Architecture and Civil Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580, Japan.

Engineering and Building Design Laboratory, Bogor Agricultural University, Bogor 16680, Indonesia.

出版信息

Materials (Basel). 2020 Aug 11;13(16):3540. doi: 10.3390/ma13163540.

DOI:10.3390/ma13163540

PMID:32796595

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7475863/

Abstract

This paper presented a non-linear finite element (FE) analysis to investigate the potential of unbonded carbon fiber-reinforced polymers (CFRP) strengthening in improving the axial compression performance of steel members. The FE model was firstly developed and validated against experimental works. Four parameters considered in the parametric study were the number of CFRP layers, CFRP length, slenderness ratio, and elastic modulus of CFRP. It was confirmed that the unbonded CFRP strengthening method is effective at enhancing the load-carrying capacity as well as delaying the overall buckling of the axial steel members. The strength increase is highly affected by the first three parameters. In addition, the method of an equivalent slenderness ratio can be used for strength design.

摘要

本文提出了一种非线性有限元（FE）分析方法，以研究无粘结碳纤维增强聚合物（CFRP）加固在提高钢构件轴向压缩性能方面的潜力。首先建立了有限元模型，并通过实验进行了验证。参数研究中考虑的四个参数是CFRP层数、CFRP长度、长细比和CFRP弹性模量。结果表明，无粘结CFRP加固方法在提高轴向钢构件的承载能力以及延缓整体屈曲方面是有效的。强度增加受前三个参数的影响很大。此外，等效长细比方法可用于强度设计。