(西安建筑科技大学土木工程学院，西安 710055)

［摘要］碳纤维布应用于木结构加固的研究很少。对碳纤维布加固木梁的正截面抗弯承载力计算进行了分析，提出了理想弹塑性木材应力应变关系模型中最大等效应力的计算方法，应用该模型，根据不同的破坏模式建立了相应的抗弯承载力计算公式。按建立的计算公式计算了三根试验梁的极限承载力，结果表明计算值与试验值吻合较好，说明所建立的公式是可行的。

［关键词］碳纤维布；加固；木梁；抗弯承载力

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

*国家自然科学基金资助项目(59878043)；陕西省重点实验室课题资助项目(05JS17)。