受顶管施工影响的土体扰动分析与实测研究  

Study of Measured Data and Soil Disturbance Influenced by Pipe Jacking Construction

作　　者：郑跃[1] 丁文其[1] 陈立生 

机构地区：[1]同济大学地下建筑与工程系同济大学岩土及地下工程教育部重点实验室,上海200092 [2]上海市第二市政工程有限公司,上海200065

出　　处：《地下空间与工程学报》2010年第5期1015-1020,共6页Chinese Journal of Underground Space and Engineering

基　　金：国家863计划课题(2006AA11Z102);上海市重点学科建设项目(B308)

摘　　要：近年来,顶管施工引起的土体扰动特性研究越来越重要。通过分析顶管施工过程地表位移的分阶段扰动机理,将顶管推进过程中的地表位移分为四个阶段:前期波动阶段、隆起阶段、施工沉降阶段和后期固结沉降阶段。本文利用上海世博电力隧道工程的土压力、孔隙水压力、深层水平位移和地下水位实测数据,分析顶管施工引起的土体扰动特性,研究表明,顶管施工中的开挖面稳定和泥浆套技术对土体扰动有较大影响。Recently soil disturbance characteristics caused by pipe jacking is more and more important.According to analyses on the soil disturbance mechanism by stages during pipe jacking construction,the authors divided surface displacement into four stages,namely,prophase fluctuation stage,uplift stage,constructional settlement stage and anaphase consolidation settlement stage.This paper analyses soil disturbance characteristics based on the measured data of earth pressure,pore water pressure,deep horizontal displacement and groundwater level in Shanghai expo power tunnel engineering.The results show that face stability and slurry sleeve technology have great effect on soil disturbance in pipe jacking construction.

关 键 词：扰动特性 地表位移 开挖面 泥浆套 

分 类 号：TU94[建筑科学—建筑技术科学]