连续箱梁桥现浇悬臂施工控制技术

Cast-in-site cantilever construction control of a continuous box girder bridge

跨江大桥为纵向不对称现浇悬臂施工连续箱梁桥,施工难度大、技术复杂。为了确保桥梁顺利施工,对该桥进行了施工控制。通过现场施工监控量测,及时指导现场施工,使得该桥圆满顺利合拢。中跨合拢时的高程误差在规范允许的范围内,说明该桥的施工控制是成功的,这为不对称连续箱梁桥的现浇悬臂施工控制提供了实例参考。

River-spanning bridge is longitudinal asymmetry continuous box girder bridge which is difficult for construction. The paper describes the construction control of the bridge. The bridge construction was finished under on site monitor and guide. The elevation error of middle span joining ls under allowed range, which shows the construction control is successful and provides a good example for cast-in-site cantilever construction control of a continuous box girder bridge.