摘要
Abstract
Sheet-Pile structure has characteristics of high strength and stiffness,good stability and small settlement.DK5+344.8 ～DK5+374.8 section of Shanghai-Hangzhou Passenger Dedicated Railway had deep soft soil subgrade crossing above a shallowly-buried metro,so sheet-pile structure was adopted to treat this spacial subgrade.This paper analyzed the construction difficulties firstly and deeply studied the construction technology of sheet-pile structure used in this special subgrade.This construction technology consisted of construction controlling points,construction process and procedure and so on.Full-sleeve bored pile technology was used and the bottom of the pile was strengthened by grouting method.Foundation pit excavation and concrete pouring were processed by sections and step by step.At the same time,construction site hardening measures were implemented.It has been found that this construction technology of sheet-pile structure has been able to meet the requirments on settlement control of deep soft soil subgrade.关键词
沪杭客运专线/深厚软土/浅埋地铁/桩板结构/施工技术Key words
Shanghai-Hangzhou Passenger Dedicated Line/deep soft soil/shallowly-buried metro/sheet-pile structure/construction technology分类
交通工程
