根据加固方法对老化桥梁的抗震、耐久性和结构性能改善进行挠曲行为评估

IF 3.6 3区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Tae-Kyun Kim, Jong-Sup Park
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引用次数: 0

摘要

在基础设施中,混凝土桥梁最容易受到各种环境影响。自然和人为影响会导致结构退化,缩短结构的使用寿命。因此,随着时间的推移,需要对桥梁进行加固。本研究中使用的结构是利用已使用约 50 年的老化桥面重新形成的。在各种加固方法中,我们选择了使用片材和板材的纤维增强聚合物(FRP)粘合方法来研究加固结构的性能。我们测试了各种加固方案,包括一层和两层 FRP 片材和 FRP 板材。通过拉伸强度和弯曲测试实验对加固结构的机械性能进行了评估。与大多数基于模型研究的文献不同,我们目前的工作是在实际桥梁上对结构加固进行实验测试验证。我们的研究结果表明,与板状加固相比,片状纤维加固的加固结构具有更高的性能。这项研究旨在为桥梁底板加固提供充足的数据,供今后的施工现场参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Flexural Behavior Evaluation for Seismic, Durability and Structure Performance Improvement of Aged Bridge According to Reinforcement Methods

Flexural Behavior Evaluation for Seismic, Durability and Structure Performance Improvement of Aged Bridge According to Reinforcement Methods

Among infrastructure, concrete bridges are the most exposed to various environmental effects. Structural degradation occurs due to natural and artificial influences shortening the lifespan of the structure. Therefore, bridges need to be reinforced over time. The structures used in this study are re-formed using aged bridge floor decks that have been used for 50 years, approximately. The fiber-reinforced polymer (FRP) adhesion method, using sheets and plate forms, was selected among various reinforcement methods to investigate the performance of reinforced structures. We have tested various reinforcement scenarios including one and two layers FRP sheets and FRP plates. The mechanical properties of the reinforced structures were evaluated experimentally through tensile strength and flexural test experiments. In contrast to most available literature focused on model-based studies, our present work represents an experimental test validation of structural reinforcement on an actual bridge. Our results indicate that fiber-based reinforcement in sheet form exhibits higher performances of the reinforced structure compared to reinforcement using the plate form. This study is intended to provide sufficient data for reinforcing bridge floors that could be used for reference at future construction sites.

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来源期刊
International Journal of Concrete Structures and Materials
International Journal of Concrete Structures and Materials CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL
CiteScore
6.30
自引率
5.90%
发文量
61
审稿时长
13 weeks
期刊介绍: The International Journal of Concrete Structures and Materials (IJCSM) provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete. These forums give participants an opportunity to contribute their knowledge for the advancement of society. Topics include, but are not limited to, research results on Properties and performance of concrete and concrete structures Advanced and improved experimental techniques Latest modelling methods Possible improvement and enhancement of concrete properties Structural and microstructural characterization Concrete applications Fiber reinforced concrete technology Concrete waste management.
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