嵌入式CFRP-PCPs復(fù)合筋加固混凝土梁抗彎性能試驗(yàn)研究
劉鋒濤，張華僑
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（柳州市建筑設(shè)計(jì)科學(xué)研究院， 柳州 545000）［摘要］利用自行研制的CFRP-PCPs復(fù)合筋（碳纖維\|棱柱體預(yù)應(yīng)力混凝土復(fù)合筋）對6根鋼筋混凝土梁進(jìn)行嵌入式加固，并根據(jù)不同的破壞模式，推導(dǎo)出相應(yīng)的計(jì)算公式，其計(jì)算值與試驗(yàn)值吻合良好。試驗(yàn)結(jié)果表明，相比嵌入式預(yù)應(yīng)力CFRP筋加固混凝土梁，嵌入式CFRP-PCPs復(fù)合筋加固混凝土梁不但有效地提高了加固構(gòu)件的抗彎強(qiáng)度、剛度，而且解決了前者張拉錨固裝置施工工藝復(fù)雜、造價較高等問題。。［關(guān)鍵詞］預(yù)應(yīng)力; CFRP-PCPs復(fù)合筋; 嵌入式加固; 鋼筋混凝土梁中圖分類號：TU378 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2015)09-0090-04Experimental study on flexural behavior of RC beams with embedded CFRP-PCPsLiu Fengtao, Zhang Huaqiao（Liuzhou Institute of Architectural Design，Liuzhou 545000， China)Abstract:By using the self-developed CFRP-PCPs (Carbon Fiber Reinforced Polymer prestressed concrete prisms), the embedded reinforcement was conducted on six reinforced concrete beams. According to different failure modes, the corresponding formulas were derived and the calculated value was in good agreement with the experimental value. The experimental results show that compared with the embedded reinforcement of concrete beams with prestressed CFRP, the embedded reinforcement of concrete beams with CFRP-PCPs not only effectively improves the bending strength and stiffness of the strengthening members, but also solves the problems of complex construction process of tensioned anchoring device, high costs etc for embedded reinforcement of concrete beams with prestressed CFRP.Keywords: prestressed； CFRP-PCPs； embedded reinforcement； reinforced concrete beam作者簡介：劉鋒濤，碩士，二級注冊結(jié)構(gòu)工程師，Email：790224669@qq.com。參考文獻(xiàn)［1］DE LORENZIS L, NANNI A. Characteristics of FRP rods as NSM reinforcement［J］. Journal of Composites Construction，ASCE，2001，5(2):14-121.［2］DE LORENZIS L, NANNI A. Shear strengthening of reinforced conerete beams with NSM fiber reinforced polymer, rods［J］.ACI Structural Journal,2001,98(1):60-68.［3］岳清瑞，李慶偉，楊勇新.纖維增強(qiáng)復(fù)合材料嵌入式加固技術(shù)［J］.工業(yè)建筑，2004，34（4）：1-4．［4］劉義.FRP筋材嵌入法加固鋼筋混凝土梁的試驗(yàn)研究［D］.杭州：浙江大學(xué)，2005.［5］張立偉.嵌入式預(yù)應(yīng)力CFRP筋抗彎加固混凝土梁試驗(yàn)研究［D］.南京：東南大學(xué)，2009.
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