玄武巖纖維布加固鋼筋混凝土梁受彎試驗研究
歐陽煜1,王鵬1,李翔2
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(1 上海大學土木工程系,上海 200072; 2 同濟大學建筑工程系,上海 200092)[摘要]在6根鋼筋混凝土梁的試驗基礎(chǔ)上,通過試驗梁的開裂荷載、屈服荷載、極限荷載、跨中撓度以及鋼筋和玄武巖纖維布的應變等參數(shù),對粘貼玄武巖纖維布加固鋼筋混凝土梁的受彎性能、破壞特征進行了分析,提出了相應的設(shè)計方法與建議,供工程應用參考。[關(guān)鍵詞]玄武巖纖維布;鋼筋混凝土梁;加固;受彎極限承載力Experimental study on flexural RC beams strengthened with BFRP sheetsOuyang Yu1, Wang Peng1, Li Xiang2(1 Department of Civil Engineering,Shanghai University, Shanghai 200072, China;2 Department of Building Engineering,Tongji University, Shanghai 200092, China)Abstract:Based on the tests of six RC beams, the flexural behavior and failure type of the test beams strengthened with externally bonded basalt fiber reinforced sheets were researched and analysed through the experimental results of test beams′ cracked load, yielded load, ultimate load, midspan deflection, steel strain and BFRP strain. A calculating method for the ultimate flexural capacity of RC beams strengthened with BFRP is proposed, which can give reference to application.Keywords:BFRP sheets; RC beams; strengthened; flexural capacity作者簡介:歐陽煜,博士后,副教授,Email:Oyy@trcet.com.cn。參考文獻[1]楊勇新,岳清瑞. 玄武巖纖維及其應用中的幾個問題[J]. 工業(yè)建筑,2007,37(6):1-4.[2]楊勇新,楊萌,等. 玄武巖纖維布的耐久性試驗研究[J]. 工業(yè)建筑,2007,37(6):11-13.[3]吳剛,魏洋,吳智深. 玄武巖纖維與碳纖維加固混凝土矩形柱抗震性能比較研究[J]. 工業(yè)建筑,2007,37(6):1418.[4]ACI Committee 440 Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures[S]. Reported by ACI C ommittee 440, 2000.[5]SERGIO F BRENA, SHARON L WOOD, MICHAEL E KREGER. Increasing Flexural Capacity of Reinforced Concrete Beams Using Carbon Fiber-Reinforced Polymer Composites[M]. ACI Structural Journal, 2003, 100(1):36-46.[6]GB50010—2002混凝土結(jié)構(gòu)設(shè)計規(guī)范[S]. 北京: 中國建筑工業(yè)出版社,2002.[7]GB50367—2006混凝土結(jié)構(gòu)加固設(shè)計規(guī)范[S]. 北京: 中國建筑工業(yè)出版社,2006.[8]王文煒,趙國藩. 玻璃纖維布加固鋼筋混凝土梁正截面抗彎承載力計算[J]. 建筑結(jié)構(gòu)學報,2004,25(3):92-97.