- 摘 要
-
(1 南京林業(yè)大學土木工程學院，南京 210037； 2 北京特希達技術(shù)研發(fā)有限公司，南京 210018)
［摘要］通過纖維布加固木柱的軸心抗壓試驗，研究纖維布的種類(碳纖維、玻璃纖維)、粘貼膠體的種類、纖維布的裹貼方式、粘貼層數(shù)等參數(shù)對木柱強度的影響。分析了纖維布加固木柱的破壞特征、受力性能。試驗結(jié)果表明，纖維橫向約束能夠提高木柱的抗壓強度，縱向纖維布必須要有橫向纖維布對它約束才能產(chǎn)生加固效果。理論分析并推導了橫向、縱橫向纖維布加固木柱的強度計算公式，計算結(jié)果與試驗結(jié)果符合較好。
［關(guān)鍵詞］纖維布；加固；圓木柱；軸心受壓；計算公式
Experimental research on timber columns strengthened with FRP sheets
Wei Yang1,2, Zhang Min2, Jiang Yumei2, Jiang Jianbiao2, Gao Benli2(1 College of Civil Engineering, Nanjing Forestry University, Nanjing 2100037, China; 2 Beijing Texida R&D Co., Ltd.,, Nanjing 210018, China)
Abstract:Timber columns strengthened with fiber reinforced polymers subjected to axial compression have been tested. The affects of the fiber (CFRP, GFRP), adhesive type, paste formats and layers on the strength are studied and the failure pattern and structural behaviors of strengthened timber columns are analyzed. The results show that fiber confinement can improve the compressive strength of wooden columns, vertical fiber could produce its reniforcing effect only confined with lateral fiber. Finally the design fomula of strengthened columns is deduced and the calculation results agree with the test ones well.
Keywords:FRP sheet; strengthening; circular timber column; axial compression; calculation formular
*江蘇省自然科學基金項目(BK2009483)。
作者簡介：魏洋，博士，講師，一級注冊結(jié)構(gòu)工程師，Email:wy78-seu@yahoo.com.cn。
參考文獻
［1］GB/T50329—2002木結(jié)構(gòu)試驗方法標準［S］.北京：中國建筑工業(yè)出版社，2002.
［2］CECS146：2003碳纖維片材加固混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］.北京：中國計劃出版社，2003.
［3］賈卉琳，張敏，吳剛，等. FRP片材加固木圓柱的試驗研究［C］//FRP與結(jié)構(gòu)補強——05全國FRP與結(jié)構(gòu)加固學術(shù)會議論文精選，2005.
［4］GB50165—92古建筑木結(jié)構(gòu)維護與加固技術(shù)規(guī)范［S］.北京：中國建筑工業(yè)出版社，1993.
