摘要
为研究路基开挖对邻近既有盾构区间的变形影响,文中以某地区市政道路改造工程敞口段施工对已建盾构区间影响分析为例,采用数值模拟,通过对邻近盾构区间上部不同路基开挖施工方案的仿真分析,得到路基卸荷对既有邻近盾构区间变形的影响规律,并提出了路基开挖施工优化方案,可更好的控制路基施工期间盾构区间变形,为类似路基开挖工程提供设计与施工指导。
To study the influence of roadbed excavation on the deformation of adjacent shield tunnel existed,in this paper,it is taken as an example which the influence of open section construction of municipal road renovation project on shield tunnel interval.By numerical simulation method,the analysis of different roadbed excavation construction schemes in the upper part of adjacent shield tunnel,the influence law of roadbed unloading on the deformation of adjacent shield tunnel existed is obtained.And the optimization scheme of roadbed excavation construction is proposed.It can better control the deformation of shield tunnel during roadbed construction,which provide design and construction guidance for similar roadbed excavation projects.
作者
彭智勇
杨秀仁
PENG Zhiyong;YANG Xiuren(National Engineering Laboratory for Green and Safe Construction Technology in Urban Rail Transit,Beijing Urban ConstructionDesign and Development Group Co.,Ltd.,Beijing 100037,China)
出处
《低温建筑技术》
2019年第3期107-110,共4页
Low Temperature Architecture Technology
基金
国家重点研发计划(2017YFB1201104)
关键词
路基开挖
区间变形
数值模拟
优化方案
subgrade excavation
interval deformation
numerical simulation
optimum scheme
