对运营中轨交立柱加固保护的施工技术研究

Research on the Construction Technology of Rail Crossing Column Reinforcement Protection in Operation

运营中的轨道交通基础设施受各种因素影响需要进行日常养护,但轨道交通建成后的养护常常受到时间、空间及保护要求高的限制,给养护带来难题。轨交立柱受多方面因素影响产生不均匀沉降后,通过有效的基坑围护、合理的开挖、严密的监测等措施,减少基坑开挖对轨交立柱的影响,采用补桩、承台植筋加固等相应措施,防止轨交立柱继续下沉,确保轨交运营安全,为类似工作提供了借鉴。

Under the influence of various factors,rail transit infrastructure in operation needs daily maintenance.But the maintenance after the completion of rail transit is often limited by high requirements of time,space and protection,which brings difficulties to the maintenance.Men-only pillar is influenced by many factors after the uneven settlement through effective pit supporting,the reasonable excavation,rigorous monitoring measures,reducing the influence of excavation on rail to pay pillar,and adopting filling pile,pile caps,reinforcing bar and the corresponding measures,such as preventing men-only column continues to sink,ensuring rail operation safety,providing a reference for similar practice.