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大纵坡、小半径曲线匝道桥在运营阶段发生主梁偏移是当前此类桥梁一种常见病害,常规纠偏方法工期长,工序多,施工复杂,对结构的完整性和耐久性会产生不同程度的损害。以齐贤枢纽匝道桥纠偏工程为背景,介绍了自平衡液压纠偏法的技术原理、辅助措施、监测内容,应用结果表明,该方法具有施工简便、速度快、精度高、无损结构外观和性能等特点,具备在类似工程中推广的价值。
Longitudinal and small radius curve ramp bridge during the operation phase of the main beam offset is a common disease of such bridges, the conventional method of rectification long construction period, the process and more complex construction, the structural integrity and durability will have different Degree of damage. Based on the rectification project of Qixian pivot ramp bridge, the technical principle, auxiliary measures and monitoring contents of self-balance hydraulic correction method are introduced. The application results show that the method has the advantages of simple construction, high speed, high precision, nondestructive appearance and performance Features, with similar projects in the promotion of value.