双曲拱桥加固方式研究

Research on the arch rib section in double arch bridge reinforcement

某大桥为双曲拱,经检测评定该桥承载能力下降明显,不满足设计和规范要求。为提高公路桥梁通行能力,对其进行了加固处理,经加固方案综合比较,该桥采用改变截面形式方案,通过加固处理完工后,最后进行荷载试验评定了该桥加固效果,发现该桥加固前后结构刚度与强度明显提高。改变截面法加固双曲拱桥的方法切实可行,收到了良好的社会和经济效果。

Hyperbolic arch of a bridge, the bridge has been tested and assessed carrying capacity decreased significantly, does not meet the design and specification requirements. To improve the traffic capacity of roads and bridges, reinforcement was carried out by the reinforcement scheme Comprehensive comparison, the bridge cross-section by changing the form of the program, after the adoption of reinforcement completed, the final assessment of the bridge reinforcement load test results, found around the bridge strengthening structural rigidity and strength has improved significantly. Reinforcement change cross section hyperbolic arch bridge method is feasible, we received a good social and economic effects.