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(西安建筑科技大學(xué)土木工程學(xué)院，西安 710055)

［摘要］碳纖維布應(yīng)用于木結(jié)構(gòu)加固的研究很少。對(duì)碳纖維布加固木梁的正截面抗彎承載力計(jì)算進(jìn)行了分析，提出了理想彈塑性木材應(yīng)力應(yīng)變關(guān)系模型中最大等效應(yīng)力的計(jì)算方法，應(yīng)用該模型，根據(jù)不同的破壞模式建立了相應(yīng)的抗彎承載力計(jì)算公式。按建立的計(jì)算公式計(jì)算了三根試驗(yàn)梁的極限承載力，結(jié)果表明計(jì)算值與試驗(yàn)值吻合較好，說(shuō)明所建立的公式是可行的。

［關(guān)鍵詞］碳纖維布；加固；木梁；抗彎承載力

Calculation of flexural capacity for timber beams reinforced with CFRP sheetsXie Qifang，Zhao Hongtie，Xue Jianyang，Wu Zhaohua(School of Civil Engineering，Xi´an Univ.of Arch.& Tech.，Xi´an 710055，China)

Abstract:CFRP sheet is used in the strengthening of reinforced concrete beams extensively for its excellent behaviors, but research on timber beams reinforced with that is much less. Flexural capacity for timber beams reinforced with CFRP sheets is analyzed, the calculation method for the maximum equivalent stress of the stress-strain model is put forward. Formula for flexural capacity is established based on above model. Ultimate capacities of three experimental beams are calculated using the formula presented, and the results are shown to be good agreement with experiment results.

Keywords:CFRP; reinforce; timber beam; flexural capacity

*國(guó)家自然科學(xué)基金資助項(xiàng)目(59878043)；陜西省重點(diǎn)實(shí)驗(yàn)室課題資助項(xiàng)目(05JS17)。