特殊地基隧道变形分析与治理应用  

Deformation Analysis and Treatment Application of Special Foundation Tunnel

作　　者：张斌 ZHANG Bin(Nanjing Metro Operation CO.,LTD.,Nanjing 210012,China)

机构地区：[1]南京地铁运营有限责任公司,江苏南京210012

出　　处：《浙江水利水电学院学报》2021年第3期48-53,共6页Journal of Zhejiang University of Water Resources and Electric Power

摘　　要：软土夹砂基础隧道极易产生不均匀沉降,理清其变形规律与变形基理,是研究隧道结构安全与耐久性的一个重要课题方向。以软土夹砂层地铁局部沉降为例,总结了该地层条件下隧道历年变形规律,深入剖析了隧道变形原因,并就隧道整治具体针对性方案进行了实例研究。在分析该类沉降原因的基础上,制订有针对性的隧道治理方案,有效控制了隧道变形,同时隧道治理后沉降速率满足规范要求,期望为后续类似工程提供一定的经验。Tunnels with soft soil and sand foundation are prone to uneven settlement.To clarify its deformation laws and principles is an important subject for studying the safety and durability of tunnel structures.Aiming at the local settlement of the subway in soft soil with sand layer,the deformation laws of the tunnel over years under stratum conditions are summarized,the reasons for the deformation are analyzed in depth,and a case study is carried out on specific targeted schemes of tunnel renovation.Based on the cause analysis of this type of settlement,a targeted tunnel treatment plan is made to effectively control tunnel deformation.At the same time,the settlement rate after tunnel treatment can meet the specification requirements.It is expected to provide some experience for subsequent similar projects.

关 键 词：软土夹砂地层 不均匀沉降 变形原因 隧道治理 治理方案 

分 类 号：U231.3[交通运输工程—道路与铁道工程]