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原文传递 Shear Performance of Fire-Damaged Reinforced Concrete Beams Repaired by a Bolted Side-Plating Technique

题名：	Shear Performance of Fire-Damaged Reinforced Concrete Beams Repaired by a Bolted Side-Plating Technique
正文语种：	英文
作者：	Chang-Jiu Jiang; Zhou-Dao Lu; Ling-Zhi Li
作者单位：	Tongji Univ
关键词：	Rein forced concrete beam; After fire; Bolted side-plating (BSP); Digital image correlation (DIC); Shear performance; Concrete and masonry structures.
摘要：	The aim of this paper is to study the shear performance of fire-damaged reinforced concrete (RC) beams repaired by the bolted side-plating (BSP) technique. A total of six RC beams were fabricated and five were exposed to fire in accordance with standard temperature curves. Then the damaged beams were retrofitted with the BSP technique and four-point bending shear tests were conducted. The development of the temperature and deformation of RC beams under fire, the failure mode, the shear capacity and deformability, and the relative slips between the bolted steel plates and the RC beams were investigated. The displacement and strain fields were also obtained using the digital image correlation (DIC) technique. The testing results indicated that the shear capacity, stiffness, and ductility of the damaged RC beams were recovered after they were repaired by the BSP technique. The strengthening effect increases as the plate depth increases and the bolt spacing decreases. Relative longitudi nal and transverse slips between the two structural comp on ents of the BSP beams were observed, and the number of anchor bolts exerted crucial influence on the degree of partial interaction between the bolted steel plates and the RC beams. DOI: 10.106l/(ASCE)ST.1943-541X.0001726. © 2017 American Society of Civil Engineers.
出版日期：	2017.05
出版年：	2017
期刊名称：	Journal of Structural Engineering
卷：	Vol.143
期：	NO.05
页码：	04017007