摘要
以深圳地铁7号线皇岗村站至福民站的新建小间距双线平顶隧道施工区间工程为例,研究采用"CRD法+直墙暗挖"进行零距离下穿既有4号线福民站,对其结构变形影响及现场监测结果分析。通过对新建双线隧道施工全过程的精细化数值仿真模拟,揭示既有营运车站的变形规律,为施工过程中结构变形发展预测和设计方案实时调整提供理论支撑。结合施工过程实时监测资料,论证新建隧道下穿施工对既有车站的影响程度,验证当前设计方案的可行性。结果表明,数值仿真分析的既有车站变形规律与实际监测结果一致,且最大变形量均小于控制值10.0 mm。
Based on the project of She,lzhen Metro l.ine 7 from Huanggang Village Station to Fumin Station, which is a newly-built parallel tunnel with zero distance and flat roof, the influence on structural deformation caused by tunnel construction beneath adjacent existing Fumin Station employing cross- diaphragm （CRD） method and straight-wall concealed excavation method, and filed monitoring resuhs are analyzed. The refinement numerical simulation of the whole construction process of the double line tunnel reveals the deformation law of the existing station and provides theoretical support for the prediction of structure deformation and real-time adjustment of designing scheme. The real time monitoring data demonstrate the impact on tbe existing station and verify the feasibility of the current design. The results show that the deformation law of the existing station demonstrated by the numerical simulation analysis is consistent with the actual monitoring results, and the maximum deformation is 10.0 mm less than the controlling value.
作者
高朗
高延达
张社荣
尚超
王振振
GAO Lang GAO Yan-da ZHANG She-rong SHANG Chao WANG Zhen-zhen(SINOHYDRO Bureau 14 Co. , Ltd. ,Kunming 610072, China State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China School of Civil Engineering. , Tianjin University, Tianjin 300072, China)
出处
《铁道标准设计》
北大核心
2017年第11期95-99,105,共6页
Railway Standard Design
关键词
双线隧道
CRD法
零距离下穿
既有车站
数值模拟
现场监测
Double line tunnel
CRD method
Zero distance under-crossing
Existing station
Numerical simulation
Field monitoring
