| 地铁双线盾构隧道下穿高速铁路路基沉降分析 |
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| 引用本文： | 许有俊,陶连金,李文博,范俊毅,王文沛.地铁双线盾构隧道下穿高速铁路路基沉降分析[J].北京工业大学学报,2010,36(12). |
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| 作者姓名： | 许有俊 陶连金 李文博 范俊毅 王文沛 |
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| 作者单位： | 北京工业大学,城市与工程安全减灾省部共建教育部重点实验室,北京,100124;内蒙古科技大学,建筑与土木工程学院,内蒙古,包头,014010;北京工业大学,城市与工程安全减灾省部共建教育部重点实验室,北京,100124 |
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| 基金项目： | "十一五"国家科技支撑计划项目资助，北京工业大学第8届研究生科技基金 |
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| 摘 要： | 以某地铁双圆盾构隧道下穿高速铁路路基工程为依托,根据天津软土地层条件,采用FLAC3D数值模拟软件,考虑CFG桩复合地基等效、列车荷载、盾构隧道施工壁后同步注浆效果、注浆压力、掌子面土舱压力、施工错距、地下水的影响等因素,模拟了盾构穿越路基的全过程,对路基顶面横向沉降槽形态进行分析研究.研究表明:路基顶面最大沉降量为6.88 mm,最大沉降坡度为0.29‰;沉降槽较平坦,形态为单峰,先行隧道施工引起的路基顶面沉降值大于后行隧道引起的路基顶面沉降值.
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| 关 键 词： | 地铁 盾构隧道 下穿 高速铁路 路基沉降 预测 |
A Numerical Simulation Study on the Settlement Laws of the High-speed Railway's Subgrade Induced by the Construction of Twin Shield Tunnel |
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| XU You-jun,TAO Lian-jin,LI Wen-bo,FAN Jun-yi,WANG Wen-pei.A Numerical Simulation Study on the Settlement Laws of the High-speed Railway's Subgrade Induced by the Construction of Twin Shield Tunnel[J].Journal of Beijing Polytechnic University,2010,36(12). |
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| Authors: | XU You-jun TAO Lian-jin LI Wen-bo FAN Jun-yi WANG Wen-pei |
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| Affiliation: | XU You-jun1,2,TAO Lian-jin1,LI Wen-bo1,FAN Jun-yi1,WANG Wen-pei1(1.The Key Laboratory of Urban Security and Disaster Engineering,Ministry of Education,Beijing University of Technology,Beijing 100124,China,2.The School of Architecture & Civil Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China) |
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| Abstract: | Based on the twin shield tunnel traversing beneath the subgrade of the high-speed railway,the numerical model of FLAC3D was established in the light of the soft clay conditions in Tianjing.Considering the factors of the CFG composite foundation,train load,backfill grouting,grouting pressure,Soil compartment of the working face pressure,staggering distance,underground water,all the process of the shield tunnel traversing the subgrade was simulated,and the lateral settlement of the top of the subgrade was ana... |
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| Keywords: | subway shield tunnel high-speed railway subgrade settlement prediction |
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