摘要
针对桥梁施工中存在的差异性沉降,引入桥梁明挖基坑桩基托换技术,通过托换桥梁基坑开挖、防护处理、基坑托换桩、大梁施工、植筋及界面处理、体系转换、切桩、接桩及千斤顶拆除工艺,实现桥梁基坑明挖施工。通过工程实践表明:新的施工方法能够实现对差异性沉降值的有效控制。
The piling underpinning technology in open-cut pit could solve the high differential settlement value problem in the current bridge construction. Through underpinning bridge pit excavation and protection treatment;pit underpinning pile,cap and beam construction;planting reinforcement and interface treatment;system conversion;pile cutting,pile connecting and jack demolition. The practical application proves that the new construction method can effectively control the differential settlement value in practical application.
作者
马万军
MA Wanjun(China Construction Second Engineering Bureau Co.Ltd.,Shanghai 200000,China)
出处
《天津建设科技》
2023年第1期24-26,共3页
Tianjin Construction Science and Technology
关键词
桥梁
明挖基坑
桩基
托换
bridge
open-cut pit
piling
underpinning
