AFRP加固磚砌墻體抗剪性能的分析
黃奕輝1，王全鳳1，楊勇新1,2，蔡志鴻1
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（1 華僑大學(xué)，泉州 362021； 2 國家工業(yè)建筑診斷與改造技術(shù)研究中心，北京 100088）［摘要］通過芳綸纖維復(fù)合材料（AFRP）加固磚砌墻體的抗剪試驗，探討了AFRP加固磚砌墻體的抗剪受力機理。對AFRP加固磚砌墻體進(jìn)行應(yīng)力分析，得到了AFRP斷裂時加固墻體水平承載力的彈性力學(xué)解析解。理論分析和實驗結(jié)果表明，AFRP可以較好地提高墻體的極限抗剪承載力和墻體的極限水平荷載，加固效果明顯。當(dāng)AFRP的加固量較大時，墻體在初步破壞后可發(fā)生應(yīng)力重分布，加固后磚砌墻體的水平極限荷載得到了很大幅度的提高。導(dǎo)出的AFRP加固磚砌墻體的抗剪承載力公式的計算值與試驗值吻合較好。［關(guān)鍵詞］芳綸纖維；磚砌體；加固；抗剪承載力Shear-resistant analysis of masonry wall reinforced by AFRPHuang Yihui1，Wang Quanfeng1，Yang Yongxin1，2，Chai Zhihong1(1 Huaqiao University， Quanzhou 362021，China；2 National Engineering Technique Research Center of Industrial Building Diagnosis and Rehabilitation, Beijing 100088, China)Abstract:It carries out an experimental research on shear-resistant experiments of brick masonry walls reinforced by aramid fiber reinforced polymer (AFRP). By using the experiments, a reinforcing mechanism of masonry wall reinforced by AFRP is studied and the elastic analysis solution under horizontal loading when AFRP split is given. The theoretical analysis and experiment result show that AFRP can better increase the ultimate shearresistant and ultimate horizontal loads of masonry wall. The stress can distribute again，the ultimate loads of the reinforced brick masonry walls increase distinctly when the quantity of AFRP is increased. The calculation formula of shear-resistant carrying capacity proposed has good agreement with the experiment results.Keywords:AFRP；masonry；reinforced；shear-resistant*國家高技術(shù)研究發(fā)展計劃(863)項目（2004AA336010）。作者簡介：黃奕輝，博士，副教授，Email：huangyihui@hqu.edu.cn。參考文獻(xiàn)［1］AHMAD A HAMID, WAEL W EI DAKHAKHNI, M ZEYAD H R HAKAM, et al. Behavior of composite unreinforced masonry-fiber-reinforced polymer wall assemblages under in-plane loading［J］. Journal of Composites for Construction, ASCE, January-February 2005.［2］MOHAMED AELGAWADY, PIERINO LESTUZZI, MARC BADOUX. Aseismic retrofitting of unreinforced masonry walls using FRP［J］. Composites Part B: engineering, 2006,37.［3］林磊，葉列平.FRP加固磚砌體墻的試驗研究與分析［J］.建筑結(jié)構(gòu),2005,36(3).［4］GBJ3—88砌體結(jié)構(gòu)設(shè)計規(guī)范［S］.［5］黃奕輝，王全鳳，楊勇新，等.AFRP加固磚砌體雙剪試件抗剪承載力［J］.建筑結(jié)構(gòu)，2007，37(12).
