Behaviour of FRP-jacketed circular steel tubes and cylindrical shells under axial compression
Behaviour of FRP-jacketed circular steel tubes and cylindrical shells under axial compression
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DOI：
10.1016/j.conbuildmat.2006.06.016
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发表时间：
2007-04
影响因子：
7.4
通讯作者：
J. Teng;Y. M. Hu
中科院分区：
文献类型：
--
作者：
J. Teng;Y. M. Hu
纤维增强聚合物（FRP）护套被广泛用于约束钢筋混凝土（RC）柱，以提高强度和延性。本文介绍了最近的一项研究的结果，在该研究中，玻璃钢约束的空心钢管的好处进行了探讨。首先介绍了FRP约束钢管的轴压试验。接下来讨论这些测试的有限元建模。试验和数值计算结果均表明，玻璃钢夹套是一种很有前途的加固技术。此外，对轴压和内压联合作用下FRP夹套圆柱薄壳的有限元分析结果表明，FRP夹套也是一种有效的加固方法，可有效地解决此类薄壳在底部附近发生象脚破坏的问题。
Fibre-reinforced polymer (FRP) jackets have been widely used to confine reinforced concrete (RC) columns for enhancement in both strength and ductility. This paper presents the results of a recent study in which the benefit of FRP confinement of hollow steel tubes was explored. Axial compression tests on FRP-confined steel tubes are first described. Finite element modelling of these tests is next discussed. Both the test and the numerical results show that FRP jacketing is a very promising technique for the retrofit and strengthening of circular hollow steel tubes. In addition, finite element results for FRP-jacketed thin cylindrical shells under combined axial compression and internal pressure are presented to show that FRP jacketing is also an effective strengthening method for such shells failing by elephant’s foot collapse near the base.