高速铁路连续梁支座更换施工

High Speed Railway Continuous Beam Bearing Replacement Construction

结合某高速铁路悬灌连续梁边跨活动支座上座板更换施工,对连续梁支座更换施工的施工准备、施工工序及施工组织及施工卡控要点进行了详细探讨,对类似问题采用更换上座板比更换支座更加经济、快捷有效;对无缝线路锁定轨温及精调有更深的认识;对顶升连续梁、更换支座施工的工艺流程及标准提供了经验。同时进一步明确了连续梁相关的徐变对支座安装预留偏心的重要性和原理,避免以后出现类似的问题。

Combined with the replacement construction of the upper seat plate of the side span movable support of a high-speed railway suspension pouring continuous beam,the construction preparation,construction procedure,construction organization and key points of construction clamping control of the replacement construction of the continuous beam support are discussed in detail,and the replacement of the upper seat plate is more economical,quick and effective than the replacement of the support for similar problems.Have a deeper understanding of the lock-up rail temperature and fine adjustment of CWR;The e×perience is provided for the technological process and standard of jacking up continuous beams and replacing bearings.At the same time,the importance and principle of continuous beam related creep for bearing installation reservation eccentricity are further clarified to avoid similar problems in the future.