上海市区某大型顶管工程引起道路沉降的有限元分析与监测  

Finite element analysis and monitoring of road subsidence due to large-scale pipe jacking in Shanghai

作　　者：牟建华[1] 

机构地区：[1]上海市岩土工程检测中心,上海200436

出　　处：《工程勘察》2013年第2期9-12,26,共5页Geotechnical Investigation & Surveying

基　　金：上海市虹口区科委资助项目(虹科委2011-8)

摘　　要：在软土地区实施大直径顶管施工,其特定的施工工艺,决定了在施工中和完工后的一段时间内,对施工区域上部道路及管线引起沉降变形是必然的。针对上海市区顶管工程导致的城市道路环境影响问题,通过参与上海市区某大型顶管工程,结合工程具体的地质条件、顶管设计参数,采用三维有限元方法建立计算模型,对施工全过程的道路地面沉降变形进行了详细的预测分析,同时通过实地采集所穿越道路的地面沉降监测数据,将理论分析与实践数据进行对比分析,对有效控制道路地面沉降提出了合理化的技术对策和方法建议。Subsidence and deformation of the roads and pipelines above the large-diameter pipe jacking projects in soft soil area is inevitable during and after the construction period due to its unique construction techniques. In order to study the impact of such construction on urban roads in Shanghai, the 3-D finite element method is used for modeling, incorporating the specific geological conditions and parameters of pipe jacking, and to predict the road subsidence and deformation during the whole process of construction in a real large-scale pipe jacking project in Shanghai. Technical measures and methodological proposals are developed for effective control of the road subsidence based on the comparison of the theoretical projection and actual data collected on the field.

关 键 词：软土地区 大型顶管 道路沉降 有限元 监测 

分 类 号：TU478[建筑科学—结构工程] TU454[建筑科学—土工工程]