Strengthening of Corroded Hollow Structural Steel Tubular Members Using Fibre Reinforced Polymer Fabrics: An Experimental Investigation

Pakistan Journal of Engineering Technology Pub Date : 2013-01-01 DOI:10.4103/0976-8580.107096

M. C. Sundarraja, P. Sriram, G. Prabhu

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引用次数: 1

Abstract

The main objective of this investigation is to experimentally investigate the suitability of carbon fibre reinforced polymer (CFRP) in strengthening artificially degraded hollow structural steel (HSS) tubular members. In order to obtain uniform corrosion, all the tubular columns were artificially degraded by heavier solution mechanism. CFRP fabrics were used as strips form with other parameters such as the number of layers and spacing of strips. Experiments were undertaken until failure to fully understand the influence of FRP characteristics on the compressive behavior of strengthened hollow tubular columns. The experimental results revealed that the external bonding of normal modulus CFRP strips significantly enhanced the load carrying capacity and stiffness of the HSS tubular sections and also delays the axial shortening of column by providing confinement/restraining effect against the elastic deformation. And also, increase in thickness of CFRP strips effectively delays the local buckling of HSS column and lead to the inward buckling rather than outward.

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纤维增强聚合物织物加固腐蚀空心钢管构件的试验研究

本研究的主要目的是通过实验研究碳纤维增强聚合物(CFRP)在人工降解中空结构钢(HSS)管状构件加固中的适用性。为了获得均匀腐蚀，所有管状柱都采用重溶液机制进行人工降解。采用CFRP布作为条带形式，并与条带层数、条带间距等参数进行比较。试验一直在进行，直到无法完全理解FRP特性对加固空心管柱抗压性能的影响。试验结果表明，正模量CFRP条的外粘接显著提高了HSS管状截面的承载能力和刚度，并通过对弹性变形的约束/抑制作用，延缓了柱的轴向缩短。增加碳纤维布厚度可以有效延缓高钢柱的局部屈曲，导致高钢柱向内屈曲而不是向外屈曲。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pakistan Journal of Engineering Technology

自引率

0.00%

发文量

审稿时长

16 weeks