Experimental Study on Damage and Rehabilitation of Reimforced Concrete Continuous Member After Fire

doi:10.3969/j.issn.0253-374x.2012.04.002

Home > Archive>Volume 40, Issue 4, 2012 >0508-0514. DOI:10.3969/j.issn.0253-374x.2012.04.002

Experimental Study on Damage and Rehabilitation of Reimforced Concrete Continuous Member After Fire
DOI:
                        10.3969/j.issn.0253-374x.2012.04.002
                    
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                        YU JiangtaoYU Jiangtao
Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, Chin
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LIU YuanLIU Yuan
Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, Chin
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LU ZhoudaoLU Zhoudao
Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, Chin
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XIANG KaXIANG Ka
Fire Research Station of Tianjin, Tianjin 300000, China
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Abstract:

为了研究受火后混凝土连续受弯构件的力学性能，进行了5个混凝土两跨连续板和7个两跨连续梁的系列试验.试验内容包括依据ISO 834标准升温曲线进行的混凝土连续构件受火试验，以及高温后受损构件和修复加固构件的静载试验.试验结果表明，高温对混凝土连续受弯构件的力学性能有明显的影响；随着受火程度的加重，混凝土构件力学性能呈下降趋势.分析试验结果可知，初始刚度降幅最为明显，正常使用承载力的降幅大于极限承载力的降幅；连续板试件的损伤大于连续梁试件.通过置换受损混凝土并采用碳纤维布加固受火后连续构件可使其承载力恢复到甚至超过受火前的状态，加固后初始刚度的提高并不明显.

Key words:fire; concrete; continuous bending member; mechanical performance; carbonfibre reinforced plastics reinforcement

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YU Jiangtao, LIU Yuan, LU Zhoudao, XIANG Ka. Experimental Study on Damage and Rehabilitation of Reimforced Concrete Continuous Member After Fire[J].同济大学学报(自然科学版),2012,40(4):0508~0514

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Received:February 17,2011
Revised:January 10,2012
Adopted:July 25,2011
Online: April 27,2012
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