| 盾构隧道结合洞桩法修建地铁车站地表沉降控制标准分析 |
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| 引用本文： | 王芳,贺少辉,刘军,曹瑞琅.盾构隧道结合洞桩法修建地铁车站地表沉降控制标准分析[J].岩土力学,2012,33(Z2):289-296. |
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| 作者姓名： | 王芳 贺少辉 刘军 曹瑞琅 |
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| 作者单位： | 1. 北京交通大学 土木建筑工程学院，北京 100044；2. 北京建筑工程学院 土木与交通工程学院，北京 100044 |
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| 基金项目： | 北京城建设计研究总院有限责任公司技术创新资助项目(2010年) |
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| 摘 要： | 在盾构隧道基础上结合浅埋暗挖法可以有效地解决地铁车站和盾构隧道施工之间的矛盾。北京地铁14号线试验段采用外径为10 m的土压平衡盾构修建，试验段上的车站结合PBA法（洞桩法）扩挖而成。综合运用预测地表沉降的经验公式、相关统计资料和规范，以及数值模拟方法，对大断面盾构隧道结合洞桩法修建地铁车站的施工过程进行地表沉降分析。结合北京地铁车站地表沉降控制基准值和现有地铁车站地表沉降统计数据，提出较为合理的地表沉降控制标准，并按照三级控制的管理方法，分级分步进行地表沉降控制，研究结果对指导工程施工有一定的参考价值。
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| 关 键 词： | 盾构隧道 洞桩法 地铁车站 地表沉降 控制标准 |
| 收稿时间： | 2012-06-20 |
Analysis of control standard for ground surface settlement in excavating metro station by shield tunnel combined with pile-beam-arch method |
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| WANG Fang,HE Shao-hui,LIU Jun,CAO Rui-lang.Analysis of control standard for ground surface settlement in excavating metro station by shield tunnel combined with pile-beam-arch method[J].Rock and Soil Mechanics,2012,33(Z2):289-296. |
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| Authors: | WANG Fang HE Shao-hui LIU Jun CAO Rui-lang |
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| Institution: | 1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China |
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| Abstract: | The contradictory between the construction of metro station and shield tunnel may be high effectively and safely solved by enlarging shield tunnel with shallow buried and undercutting method. The experiment section of Beijing metro line 14 is constructed by earth pressure balance shield machine with an outer diameter of 10 m; and the stations on this section will be constructed by pile-beam-arch method. The empirical formulas of predicting the ground surface settlement, the related statistics data and specifications, and numerical simulation methods, are used to predict the ground surface settlement caused by the large cross-section shield tunnel combined with pile-beam-arch method in construction process. Combined with the ground surface settlement control reference value of Beijing metro station and the statistic data of existing metro station statistics, the reasonable ground settlement control standard is put forward. In accordance with the three class control management methods, the ground surface settlement is controlled step by step. The research result has some reference value to guide the engineering construction. |
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| Keywords: | shield tunnel pile-beam-arch method metro station ground surface settlement control standard |
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