DMP工法在敏感环境深基坑工程中的应用  

Application of DMP Method in Deep Foundation Excavation Engineering in Sensitive Environments

作　　者：杜策 李青[4,5] 张振 周振[3] 叶怀文 DU Ce;LI Qing;ZHANG Zhen;ZHOU Zhen;YE Huaiwen(Department of Geotechnical Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China;Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China;Shanghai Yuan Feng Underground Engineering Co.,Ltd.,Shanghai 201015,China;East China Architecture Design&Research Institute Co.,Ltd.,Shanghai 200011,China;Shanghai Engineering Research Center of Safety Control for Facilities Adjacent to Deep Excavations,Shanghai 200011,China)

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]上海渊丰地下工程技术有限公司,上海201015 [4]华东建筑设计研究院有限公司,上海200011 [5]上海基坑工程环境安全控制与工程技术研究中心,上海200011

出　　处：《施工技术(中英文)》2025年第7期77-81,共5页Construction Technology

基　　金：国家自然科学基金面上项目(42372317)。

摘　　要：针对传统搅拌桩数字化程度低、施工扰动不可控等问题,研发了数字化微扰动搅拌桩(DMP工法),并在上海浦东机场四期项目中成功应用。结果表明,DMP工法通过配置多通道异形钻杆、差速叶片、地内压力监控系统,能够实现施工过程对周边环境的微小扰动,实测捷运维修基地沉降仅1~2mm。数字化施工控制系统可确保设备按照输入的设计参数进行自动化施工并在云端展示施工进程。桩体开挖后表观质量明显优于三轴搅拌桩,桩体芯样强度及均匀性较好。研究成果对于提升搅拌桩施工质量和施工数字化水平具有重要的实践意义。Aiming at the problems of low digitization and uncontrollable construction disturbance of traditional mixing piles,a digital micro-disturbance soil mixing pile(DMP method)was developed and successfully applied in the fourth phase project of Shanghai Pudong Airport.The results indicate that the DMP method can achieve a small disturbance to the surrounding environment during the construction process by configuring multi-channel special-shaped drill pipe,differential blade,and ground pressure monitoring system.And the measured settlement of the MRT maintenance base is only 1~2mm.The digital construction control system ensures that the equipment is automatically constructed according to the input design parameters and the construction process is displayed in the cloud.The apparent quality of the pile after excavation is obviously better than that of the three-axis mixing pile,and the strength and uniformity of the pile core sample are better.The research results have practical significance for improving the construction quality and construction digitization of mixing piles.

关 键 词：深基坑 支护 DMP工法 施工控制 地内压力 微扰动 

分 类 号：TU753[建筑科学—建筑技术科学]