CFRP条张拉法在某既有桥梁中的应用

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI:10.14359/14887

A. Tateishi, A. Kobayashi, Y. Hamada, T. Takahashi, H. Yasumori

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引用次数: 2

摘要

摘要:为修复已有28年历史的钢筋混凝土箱梁桥，提高该桥的承载能力，采用了碳纤维增强聚合物(CFRP)张拉条法或出板法。由于28年的交通繁忙，赤府桥已经老化，主梁的底部有许多裂缝。在CFRP应用前后，使用45吨重的车辆对桥梁进行了现场荷载试验。结果表明，碳纤维布张拉带在桥梁梁上的应用，对减小钢筋应力、减小裂缝宽度具有较好的效果。

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Application of Tensioned CFRP Strip Method to an Existing Bridge

Synopsis: Tensioned carbon fiber reinforced polymer (CFRP) strip method or Outplatemethod was applied to the 28 years old reinforced concrete (RC) box girder bridge in order to rehabilitate and increase the load capacity of the bridge. The Chofu Bridge had been deteriorated by 28 years of heavy traffic and had many cracks on the underside of the main girders. Before and after the CFRP application, on-site load tests of the bridge were conducted using a 45 ton-weight vehicle. Results of the tensioned CFRP strip application to the bridge girders proved effective to reduce the stress in the reinforcing bars and to reduce crack widths.

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SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures

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