上跨既有盾构隧道深基坑围护设计及快速施工技术研究  

Study on Enclosure Design and Rapid Construction Technique for Deep Foundation Pit Overpassing Existing Shield Tunnel

作　　者：甘波 GAN Bo(Shanghai Construction No.2(Group)Co.,Ltd.,Shanghai 200080,China;Shanghai Center of Top-down Method in Construction Engineering,Shanghai 200080,China)

机构地区：[1]上海建工二建集团有限公司,上海200080 [2]上海建筑工程逆作法工程技术研究中心,上海200080

出　　处：《建筑施工》2024年第12期2101-2104,2109,共5页Building Construction

基　　金：上海建工集团股份有限公司项目资助课题(23JCSF-19)。

摘　　要：上海浦东机场前期项目为扩建T3航站楼前期工程,主要是卫星厅排水系统、S32道路改道。改道内容包括原S32地道侧墙拆除、排水明渠拆除、既有盾构线保护,重新新建东绕S32道路、排水系统进行补偿,新增排水系统的深基坑横跨机场运行中S1~T3盾构线。以此为例,主要从上跨既有运行中的盾构隧道深基坑围护设计、快速施工、自动化监测方面,分项分部对运行中的盾构线保护技术开展研究。在此基础上,形成一套完整的既有盾构线保护技术,并实现成果的广泛应用。The preliminary project of Shanghai Pudong Airport is part of the expansion of the T3 terminal,including the drainage system for the satellite hall and the diversion of the S32 road.The diversion work involves demolishing the side walls of the original S32 tunnel,removing the open drainage channel,and protecting the existing shield tunnel line.The project also includes constructing a new eastward diversion of the S32 road and compensating the drainage system,with a deep foundation pit overpassing the operational S1-T3 shield tunnel line.This project serves as a case study to explore shield tunnel protection techniques for operating shield lines,focusing on deep foundation pit enclosure design,rapid construction,and automated monitoring.A comprehensive shield tunnel protection system is developed and applied extensively.

关 键 词：机场扩建项目 既有盾构线 深基坑施工 土体加固 土方开挖 

分 类 号：TU753[建筑科学—建筑技术科学]