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结合某大跨径钢筋混凝土箱形的加固实践,对钢筋混凝土箱形拱桥主拱肋的加固技术进行了相关探讨,介绍了该桥的加固方法。根据加固前后的试验结果,对主拱肋应变和荷载横向分布情况进行了对比分析,验证了加固效果的可靠性。该桥的加固实践可为同类型桥梁的加固处治提供参考。
Combined with the reinforcement practice of a large span reinforced concrete box, the reinforcement technology of the main arch rib of the reinforced concrete box arch bridge is discussed, and the reinforcement method of the bridge is introduced. According to the test results before and after reinforcement, the comparison of the strain and load transverse distribution of the main arch rib is carried out, which verifies the reliability of the reinforcement effect. The strengthening of the bridge can provide reference for strengthening the same kind of bridge.