【作者】 陈瑶艳；

【导师】 王柏生；

【作者基本信息】 浙江大学 ， 结构工程， 2004， 硕士

【摘要】 碳纤维材料补强加固混凝土结构技术作为一种新兴的、技术含量高的建筑物补强加固方法，具有耐腐蚀、施工简便快捷、几乎不改变构件原尺寸等特点，有很高的研究、推广价值和巨大的社会的经济效益。碳纤维材料是迄今为止应用于土木工程领域最早、技术最成熟，也是用量最大的一种高科技材料，与其他纤维增强塑料相比有其独特的优越性。碳纤维材料具有优异的物理力学性能、良好的粘合性、耐热性及抗腐蚀性等特点，非常适用于土木工程领域。 在前人研究的基础上，本文通过碳纤维布粘贴加固8个钢筋混凝土梁试件负弯矩区的抗弯性能试验研究，探讨了两种不同的碳纤维布粘贴加固方式的加固效果、试件的破坏特征、加固机理以及比较了三种受弯极限承载力的计算方法。 试验结果表明，对梁的负弯矩区粘贴碳纤维布是能起到一定的加固效果的，而且，在两种不同的碳纤维布粘贴加固方式中，在板面延柱边粘贴的加固方式比直接在梁的负弯矩区粘贴的加固方式的加固效果好。同时，对于碳纤维布加固梁负弯矩区的加固机理同于碳纤维布对于梁的正弯矩加固，因此，完全可以套用碳纤维布对于钢筋混凝土梁的受弯加固计算方法。比较了三种受弯承载力的计算方法，本文认为上海市建设和管理委员会颁行的《纤维增强复合材料加固混凝土结构技术规程》中对于碳纤维受弯加固设计的承载力计算公式是安全合理的，可以用于实际的工程加固设计。更多还原

【Abstract】 As a new structural engineering material, continuous carbon fiber sheet (CFS) has many advantages of excellent mechanical strength and deformation property, convenience in use, low weight, non-dimensional increase, and immunity to corrosion. The CFRP-strengthening technique has attracted many researchers and engineers in the world. So far, this CFRP is one of the high-tech material which is the earliest applied in the civil engineering, the most well-rounded in the technique and the largest in the amout. Compared with other FRP material, the CFRP is the same with the civil engineering fields.Based on the predecessors’ work, this paper presents the strengthening effect with two different sticking manners, failure modes, strengthening mechanism and compares the three calculation methods of the ultimate flexural capacity of 8 RC beams strengthened with CFRP in the negative flexural area.Experiments results proved that it is effective strengthening the negative flexural area of RC beams with CFRP. And, the strengthening effect of the second CFRP sticking manner excels the first manner. At the same time, the strengthening mechanism of RC beams in the negative flexural area is the same with in the positive flexural area. So in this paper,the strengthening calculation methods of the positive flexural area is applied in the negative flexural area. Compared wih the three different calculation methods of the ultimate flexural capacity, the method in the #《technical code for strengthening concrete structure with fiber reinforced polymer》 edited by the construction and supervisement committee of shanghai is reasonable and credible. This method may applied in the actual strengthening design.更多还原