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首页> 外文期刊>Construction and Building Materials >Seismic retrofitting of R/C columns having plain rebars using CFRP sheets for improved strength and ductility
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Seismic retrofitting of R/C columns having plain rebars using CFRP sheets for improved strength and ductility

机译：使用CFRP板对具有普通钢筋的R / C柱进行抗震改造，以提高强度和延展性

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摘要

This experimental work focuses on the retrofitting of reinforced concrete columns using carbon fiber reinforced polymer (CFRP) sheets to improve their strength and ductility capacities. Plain rebars, inadequate splicing lengths and insufficient stirrup spacing were the main parameters to reflect the old construction practice. The effectiveness of CFRP strengthening technique was studied. The test results showed that retrofitting with CFRP sheets was effective for columns with continuous rebars. However, only a slight improvement in performance was obtained for the retrofitted lap-spliced column. When the column was retrofitted by welding of dowel rebars with longitudinal rebars near splicing region and then wrapped with CFRP sheets, its strength, ductility and energy dissipation capacity improved significantly.
机译：这项实验工作的重点是使用碳纤维增强聚合物（CFRP）板对钢筋混凝土柱进行改造，以提高其强度和延展性。普通钢筋，拼接长度不足和箍筋间距不足是反映旧建筑实践的主要参数。研究了CFRP加固技术的有效性。测试结果表明，使用CFRP薄板进行改装对于具有连续钢筋的色谱柱是有效的。但是，翻新的搭接拼接柱在性能上仅获得了一点改善。当通过在接合区域附近用纵向钢筋焊接销钉钢筋并用CFRP板包裹来对立柱进行改造时，其强度，延展性和能量消散能力得到了显着提高。

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