钢筋混凝土U形套箍加固石拱桥实例分析

摘要

On the basis of the common reinforcement methods of existing bridges,the reinforcement technology mechanism of reinforced concrete U-shaped hoop is emphatically analyzed.Taking an old hollow type bridge as an example,field testing and theoretical analysis based on (H21 JTG/T-2011) of highway bridge technique condition evaluation criteria are carried out.Midas/Civil 2012 modeling results show that the bearing capacity of reinforced concrete bridge after U-shaped hoop reinforcement can meet the specification requirements.%在介绍现役石拱桥常用加固方法的基础上，分析了钢筋混凝土 U形套箍加固技术作用机理。以某旧空腹式石拱桥为例，基于（JTG／T H21－2011）公路桥梁技术状况评定标准对其进行现场检测和理论分析。Midas／Civil 2012建模分析结果表明，钢筋混凝土 U形套箍加固后的石拱桥承载能力满足规范要求，加固效果显著。