预应力碳纤维板加固组合箱梁应用研究  

Application Research on Prestressed CFRP Plates in Strengthening Reinforced Composite Box Girder

作　　者：吴志平[1] 赵海东[1] 张田田[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：《施工技术》2013年第17期68-70,103,共4页Construction Technology

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

摘　　要：目前,纤维材料已广泛应用于工程结构加固中。采用预应力碳纤维板加固受弯构件,可以充分发挥碳纤维板材料的强度,提高结构的正常使用性能和极限承载能力。在自主研发的一套预应力碳纤维板平板锚具的基础上,采用预应力碳纤维板成功应用于某一大桥组合箱梁加固中。结果表明,和加固前相比,整体刚度提升了20%左右;从挠度数据来看,和粘钢加固方法效果没有明显差异;但从应变数据来看,采用预应力碳纤维进行加固有效降低了应变幅值。At present, FRP material has been widely used in structure strengthening engineering. Prestressed CFRP plate can effectively improve the performance on limit state of service ability and bearing capacity. Based on self-developed technology of plate anchor for prestressed CFRP plates, prestressed CFRP plate is successfully used in the composite box girders of a bridge. The results indicate that compared with original structure, the integral rigidity is increased by about 20%. Judging from deflection data, there is no significant difference from method of bonding steel plate effects, but from strain data, prestressed CFRP plates effectively reduce the strain amplitude.

关 键 词：桥梁工程 组合箱梁 碳纤维板 锚具 施工技术 

分 类 号：TU647.3[建筑科学—建筑技术科学]