| 扩挖盾构隧道建成两连拱地铁车站模型试验 |
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| 引用本文： | 李围,何川,张海波.扩挖盾构隧道建成两连拱地铁车站模型试验[J].岩土力学,2008,29(12):3261-3265. |
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| 作者姓名： | 李围 何川 张海波 |
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| 作者单位： | 1. 贵州大学土木建筑工程学院,贵阳,550003;西南交通大学地下工程系,成都,610031
2. 西南交通大学地下工程系,成都,610031 |
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| 摘 要： | 采用模型试验进行了扩挖盾构隧道建成两连拱隧道地铁车站的施工方案研究,重点研究扩挖施工的可行性和地层位移规律.同时,采用有限差分法进行了扩挖施工全过程二维数值模拟对比分析.结果表明,采用中导洞法扩挖建成两连拱隧道地铁车站的施工方案是可行的,但需进行拱脚和拱顶加固.施工完成后地层竖向位移场呈U型分布,随着加固地层力学参数的提高,地层位移减小,拱脚加固能够有效地减小地层位移.地表沉降曲线为近似正态分布,其宽度为3倍的车站结构总宽度.
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| 关 键 词： | 地铁车站 区间盾构隧道 两连拱隧道 扩挖施工 模型试验 |
| 收稿时间： | 2007-04-16 |
Model test of twin-bore metro station constructed with expanding shield tunnel |
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| LI Wei,HE Chuan,ZHANG Hai-bo.Model test of twin-bore metro station constructed with expanding shield tunnel[J].Rock and Soil Mechanics,2008,29(12):3261-3265. |
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| Authors: | LI Wei HE Chuan ZHANG Hai-bo |
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| Institution: | 1. School of Architecture & Civil Engineering, Guizhou University, Guiyang 550003, China; 2. Department of Tunnel & Underground Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | By using model test,construction schemes for metro station of twin-bore tunnel with expanding construction based on shield tunnels are studied.Main research contents are the feasibility of expanding construction method and the displacement rule of stratum displacement.The contrast between results of the model test and 2D numerical simulation of the expanding construction with the finite difference method is carried out.Results show that the construction scheme for metro station of twin-bore tunnel with expa... |
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| Keywords: | metro station sectional shield tunnel twin-bore tunnel expanding construction model test |
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