盾构隧道施工动态扰动特点及控制分析  

Analysis on the Characteristics of Dynamic Disturbance due to Shield Tunneling and the Construction Control

作　　者：付昱凯[1,2] 陆小龙[3] 丁文其[1,2] 钱磊 

机构地区：[1]同济大学土木工程学院地下建筑与工程系,上海200092 [2]同济大学岩土及地下工程教育部重点实验室,上海200092 [3]上海市电力公司电网建设公司,上海200025 [4]许昌华杰公路勘察设计有限责任公司,河南许昌461000

出　　处：《地下空间与工程学报》2010年第4期810-814,共5页Chinese Journal of Underground Space and Engineering

基　　金：国家863计划课题(2006AA11Z102);国家自然科学基金(50878149);上海市重点学科建设项目(B308)资助

摘　　要：按照盾构施工引起的地层扰动机理及变形特点,将盾构施工对周围地层的扰动过程分为5个阶段,即:盾构机到达之前土仓压力影响阶段、盾构机通过阶段、管片衬砌脱出盾构机盾尾阶段、管片壁后浆液硬化阶段以及扰动土层的蠕变固结阶段,对盾构隧道施工各个阶段的地面沉降、土压力及孔隙水压力的变化过程进行监测,并分析其各自的变化特点。针对盾构施工过程的5个阶段的施工扰动特点,探讨各阶段相应的施工扰动控制要点。According to the disturbance mechanism and characteristics of strata deformation,the disturbance process due to shield tunnel construction can be divided into five stages： stage of chamber earth pressure influence,stage of shield machine passing,stage of tunnel segments being pulled out from shield tail,stage of grout hardening behind segment and stage of creeping and consolidating of disturbed strata.The variation processes of pore water pressure,ground deformation and earth pressure above the shield tunnel have been monitored and analyzed during shield driving construction.Based on the disturbance characteristics of the five stages of shield construction,the main points of shield tunnel construction control during every stage are discussed.

关 键 词：盾构施工 扰动 地层变形 孔隙水压力 土压力 施工控制 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]