【作者】 祝金标；

【导师】 王柏生；

【作者基本信息】 浙江大学 ， 结构工程， 2005， 硕士

【摘要】 木结构是中国传统建筑的主要结构形式，由于种种原因使得这些结构需要修复和加固。国内外研究者对纤维布(FRP)加固木梁的研究做了大量的工作，但这些研究只局限于FRP加固未破损木梁的研究；然而，在实际工程中需加固的木梁已经受到了不同程度的损伤，因而需要对FRP加固后的受损木梁的结构性能进行研究。 本文通过21根木梁的试验研究，分析了碳纤维布(CFRP)修复加固局部破损木梁的抗弯性能，试验模拟了两种截面损伤程度，考虑了3种不同贴布量，研究结果表明CFRP修复加固后破损木梁的抗弯性能得到明显的修复和提高，本文采用的模拟破损的方法是合适的。在此基础上，论文还提出了一种计算CFRP修复加固破损木梁的承载力的方法，通过与试验结果的比较验证了这种计算方法的有效性。更多还原

【Abstract】 In china, main members of most traditional buildings were made of wood. Repair and strengthening of structures is required for the wood members damaged due to various reasons. Many researchers pay their much attention on studying the structural behavior of undamaged or plain wood beams reinforced by CFRP sheets. But, in practice, most wood beams that need be repaired have already been damaged or degraded. So, it is necessary to study the structural performances of damaged wood beams reinforced by CFRP sheets.An experimental program was undertaken to study the flexural properties of pre-damaged wood beams strengthened by carbon fiber reinforced polymer (CFRP) sheets. Eighteen beams were tested to failure using three different reinforcement ratios and three undamaged beams as control beams. And a method to simulate the local damage of beams was proposed. The result of experiment indicates that the CFRP does contribute an excellent effect to the increasing of the flexural properties of reinforced wood beams, and the proposed simulating method is appropriate. Based on experimental study, a method to predict the flexural capacity of reinforced wood beams was proposed. After comparing experimental results and calculated results, we can see that the proposed method is available.更多还原