正上方加卸载对盾构隧道变形的影响分析  

Deformation Analysis of Shield Tunnel with Loading and Unloading Above

作　　者：范垚垚[1] 郭晓航[2] 邓指军[3] 徐意智[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]同济大学建筑设计研究院( 集团) 有限公司,上海200092 [3]上海轨道交通维护保障中心,上海200070

出　　处：《施工技术》2014年第7期107-109,共3页Construction Technology

摘　　要：在软土地区,隧道正上方加卸载会导致盾构隧道产生不均匀沉降和隆起,引发隧道产生渗漏、结构破损等各种病害,影响列车运营安全。通过以隧道正上方河道内加卸载的工程实例,对隧道内实测数据分析和采用有限元进行模拟工况分析计算,评价隧道正上方加卸载对盾构隧道变形的影响。In soft soil area, uneven settlement will occur in shield tunnel loading or unloading above, it will lead leakage and structure damage and so on, and the safe of train operation will be influenced. By taking loading and unloading on river bed above tunnel as an example, the measured data are analyzed and the construction stage is calculated by means of finite element, the influence of shield tunnel deformation owing to loading or unloading above tunnel is judged.

关 键 词：隧道工程 盾构 加载 卸载 变形 有限元分析 

分 类 号：U459.5[建筑科学—桥梁与隧道工程]