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(1 遼東學(xué)院城市建設(shè)學(xué)院，丹東 118003；2 沈陽(yáng)建筑大學(xué)土木工程學(xué)院，沈陽(yáng) 110168)
［摘要］以3根碳纖維布加固鋼筋混凝土柱根部錨固的破壞性試驗(yàn)為基礎(chǔ)，分析了在柱截面尺寸及配筋相同的情況下，碳纖維布加固量、錨固長(zhǎng)度、柱根部有無(wú)CFRP封閉箍這3個(gè)變化參數(shù)對(duì)加固效果的影響。通過(guò)對(duì)試驗(yàn)結(jié)果的分析，推導(dǎo)出碳纖維布加固鋼筋混凝土柱根部（尤其在柱根部有CFRP封閉箍的情況）錨固的承載力計(jì)算公式，在公式中引進(jìn)了錨固端碳纖維布起鼓應(yīng)力折減系數(shù)，并將理論計(jì)算結(jié)果與試驗(yàn)結(jié)果進(jìn)行了比較。結(jié)果表明，采用的計(jì)算方法與試驗(yàn)值誤差較小，且偏于安全，可供工程加固設(shè)計(jì)時(shí)參考。
［關(guān)鍵詞］碳纖維布；加固；錨固；鋼筋混凝土柱；承載力
中圖分類號(hào)：TU375-05文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2012)03-0101-03
Experimental study on anchorage schemes of reinforced concrete columnsstrengthened with CFRP sheets
Liu Xiang1, Cui Xiguang2（1 School of City Construction， Eastern Liaoning University, Dandong 118003, China;2 School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China）
Abstract:Based on the destructive test on anchorage schemes of three reinforced concrete columns strengthened with carbon fiber(CFRP) sheets, in the case of the same column section size and reinforcement, the effect of CFRP strengthening quantity, anchorage length and CFRP closed hoop in column root on the reinforcement were analyzed. Through the result, the formula of anchorage bearing capacity for CFRP sheets reinforced concrete column root, especially which have CFRP closed hoop, was derived. Reduction factor of CFRP drum stress on anchor end was considered in the formula, and the theoretical calculation results and the test results were compared. The results show that, the theoretical calculation results and the test results are agreed well, and the theoretical calculation results tend to be safer, so it can be reference for engineering strengthening design.
Keywords:carbon fiber sheet; reinforcement; anchor; reinforced concrete column; bearing capacity
作者簡(jiǎn)介：劉相，碩士，講師，Email：liuxiang413@163.com。
參考文獻(xiàn)
［1］趙彤，謝劍.碳纖維布補(bǔ)強(qiáng)加固混凝土結(jié)構(gòu)新技術(shù)［M］.天津:天津大學(xué)出版社，2001.
［2］趙彤，鄭宏，戴自強(qiáng)，等.碳纖維布增強(qiáng)鋼筋混凝土柱正截面承載能力的試驗(yàn)研究［J］.建筑結(jié)構(gòu)，2000，30（7）：35-39.
［3］滕錦光，陳建飛，史密斯S T, 等. FRP加固混凝土結(jié)構(gòu)［M］.李榮，滕錦光，顧磊，譯.北京:中國(guó)建筑工業(yè)出版社，2005