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FRP materials for the rehabilitation of tubular steel structures, for underwater applications

机译：用于水下应用的管状钢结构修复用玻璃钢材料

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摘要

Tubular structures have become increasingly popular for economic and aesthetic reasons, yet member deterioration and fatigue-cracking of connections is often reported. Therefore, measures for structural upgrading and repair have become imperative. Fibre reinforced Polymers (FRPs) have been used widely for the repair of concrete elements, but their application to steel structures has been so far minimal. An encompassing literature review is presented herein relative to the behaviour and use of FRP materials in civil infrastructure, with application to steel. The suitability of such materials to rehabilitate tubular steel members and the structural behaviour of the resulting composite system were investigated experimentally. The programme was tailored primarily to the offshore industry and techniques associated with underwater repair methods. The strengthening process was effective as all composite members exhibited improved structural performance; hence the current research study has proven the feasibility of rehabilitating tubular steel members with advanced composite materials underwater.
机译：由于经济和美学的原因，管状结构已变得越来越流行，但是经常会出现构件变质和连接件疲劳破裂的报道。因此，必须进行结构升级和维修的措施。纤维增强聚合物（FRPs）已广泛用于混凝土构件的修复，但到目前为止，它们在钢结构中的应用很少。本文介绍了有关FRP材料在民用基础设施中的行为和用途以及在钢铁上的应用的综述性文献。实验研究了这种材料对管状钢构件的修复能力以及所得复合材料系统的结构性能。该程序主要针对海上行业和与水下修复方法相关的技术而量身定制。增强过程是有效的，因为所有复合材料构件均表现出改善的结构性能；因此，当前的研究证明了用水下先进的复合材料修复管状钢构件的可行性。

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