明挖浅埋湖底地铁隧道上方大面积加卸载下的变形监测研究  

Research on Across the Lakebed Metro Tunnel Deformation Monitoring Due to Large-scale Loading and Unloading

作　　者：贺磊[1] 郭文章[1] 段伟[1] 张利凯 

机构地区：[1]南京市测绘勘察研究院有限公司,江苏南京210005

出　　处：《城市勘测》2017年第6期114-117,共4页Urban Geotechnical Investigation & Surveying

基　　金：江苏省科技支撑计划项目(BE2014026)

摘　　要：浅埋湖底地铁隧道上方大面积加卸载易导致隧道结构产生不均匀沉降和隆起,引起隧道结构病害,而隧道上方有水土压力,且长期处于高水位状态,对地铁隧道使用存在较大安全隐患。本文通过湖底隧道上方加卸载施工中自动化监测的工程实例,介绍了自动化实时监测的技术要点和施工控制措施,并对实测数据与有限元模拟计算值进行对比分析,对以后类似的工程实施有一定的参考价值。A large area of loading and unloading easily lead to uneven settlement and uplift of the cut shallow lake tunnel,resulting in the damage of the tunnel structure,the tunnel above the soil and water pressure,and long-term high water level,there is a big security risk.This paper through the subway automatic monitoring project during the cut shallow lake tunnel top loading and unloading,introduces the automatic real-time monitoring technology and construction control measures,and the measured data with the calculated values are compared and analyzed,have certain reference value for future similar project implementation.

关 键 词：湖底隧道 明挖浅埋 地铁隧道自动化监测 加卸载 HS模型 有限元分析 

分 类 号：TU196[建筑科学—建筑理论]