预应力碳纤维板加固混凝土受弯构件应用设计  

Design of Prestressed CFRP Plates in Strengthening Reinforced Concrete Flexural Members

作　　者：吴志平[1] 赵海东[1] 张田田[1] 王凯[1] 

机构地区：[1]上海应用技术学院城市建设与安全工程学院,上海201418

出　　处：《结构工程师》2013年第4期172-178,共7页Structural Engineers

基　　金：上海市教育委员会重点学科建设项目资助项目(j51502);国家自然科学基金资助项目(51108268)

摘　　要：在自主研发的一套预应力碳纤维板平板锚具的基础上,基于受弯截面的极限状态分析,提出了预应力CFRP板加固混凝土梁两种破坏模式下正截面受弯承载力的计算方法及相应计算公式,并和文献已有的6根预应力CFRP板加固梁的试验数据进行对比。结果表明:6根底板贴预应力CFRP板加固混凝土梁其正截面抗弯承载力计算值与试验值的误差不超过5%,混凝土压碎破坏时平均误差2%,碳纤维板拉断破坏时平均误差±4%,计算值与试验结果吻合较好,证明了本文所建议的正截面受弯承载力的计算方法具有良好的适用性。Base on the developed plate anchor technology for prestressed CFRP plates strengthening, the pa- per presents calculation methods for flexural design of concrete beams reinforced with prestressed CFRP plates. The calculation formula for flexural capacity of two failure modes were proposed based on analysis of the ulti- mate state of beam sections. Through comparing with the experimental data of 6 prestressed CFRP plate strengthening reinforced concrete flexural members in the literature, it is indicated that the difference between the calculation and the testing result was less than 5%. The average error is 2% for concrete crushing dam- age; while it is ±4% for CFRP plate abrupt rupture. The calculated values agree well with the experimental results, which verifies the calculation method proposed in this article.

关 键 词：预应力 碳纤维板 锚具 钢筋混凝土受弯构件 设计 

分 类 号：TU375.1[建筑科学—结构工程]