| 软土地区双侧深基坑施工对邻近地铁车站及盾构隧道变形影响的分析 |
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| 引用本文： | 吕高乐,易领兵,杜明芳,李帅兵.软土地区双侧深基坑施工对邻近地铁车站及盾构隧道变形影响的分析[J].地质力学学报,2018,24(5):682-691. |
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| 作者姓名： | 吕高乐 易领兵 杜明芳 李帅兵 |
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| 作者单位： | 郑州市轨道交通有限公司;中交铁道设计研究总院有限公司;河南工业大学土木建筑学院;上海城铁建筑科技有限公司 |
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| 摘 要： | 以某软土地区邻近地铁车站及盾构隧道的双侧深基坑工程为背景,运用ABAQUS数值计算软件对邻近地铁车站及盾构隧道的双侧深基坑施工进行数值模拟,研究了双侧深基坑施工过程对基坑坑内土体隆起与坑外土体沉降的影响,分析了双侧深基坑施工过程中地铁车站及盾构隧道变形情况,得出地铁车站及盾构隧道变形规律。计算结果表明:基坑内侧土体隆起最大值为54.3 mm;围护结构X向位移最大值为32.8 mm,Y向位移最大值为26.8 mm;车站竖向位移最大值发生在A1区开挖至坑底工况,最大值为6.8 mm,而车站水平位移最大值为7.6 mm;弯矩累计增量最大值155.9 kN·m/m,经计算,施工过程对车站主体结构影响很小;盾构隧道X向水平位移最大值为4.7 mm;而盾构隧道沉降最大值为3.8 mm,发生在A1区开挖至坑底工况。
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| 关 键 词： | 双侧深基坑 地铁车站 盾构隧道 ABAQUS 影响 |
| 收稿时间： | 2018/6/5 0:00:00 |
| 修稿时间： | 2018/8/3 0:00:00 |
ANALYSIS OF INFLUENCE OF DEEP FOUNDATION PIT CONSTRUCTION ON DEFORMATION OF ADJACENT SUBWAY STATION AND SHIELD TUNNEL IN SOFT SOIL AREA |
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| LV Gaole,YI Lingbing,DU Mingfang and LI Shuaibing.ANALYSIS OF INFLUENCE OF DEEP FOUNDATION PIT CONSTRUCTION ON DEFORMATION OF ADJACENT SUBWAY STATION AND SHIELD TUNNEL IN SOFT SOIL AREA[J].Journal of Geomechanics,2018,24(5):682-691. |
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| Authors: | LV Gaole YI Lingbing DU Mingfang and LI Shuaibing |
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| Institution: | Zhengzhou Railway Transportation Co., Ltd., Zhengzhou 450000, Henan, China,The Hand in Railway Design & Research Institute Co., Ltd., Beijing 100000, China,College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450000, Henan, China and Shanghai City Railway Construction Technology Co., Ltd. Shanghai 200000, China |
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| Abstract: | Taking the bilateral deep foundation pit construction in some soft soil area adjacent to the subway station and shield tunnel as an example, using the numerical calculation software ABAQUS to carry out the numerical simulation of bilateral deep foundation pit construction, The influence of the construction process on the soil uplift in the foundation pit and the soil settlement outside the pit is studied, the deformation conditions of the subway station and shield tunnel were analyzed and the regularity were obtained. The calculation results show that the maximum value of soil uplift inside the foundation pit is 54.3 mm. The maximum x-direction displacement of the surrounding structure is 32.8 mm and the maximum y-direction displacement is 26.8 mm. The maximum vertical displacement of the station occurs from excavation to pit bottom in area A1, with a maximum value of 6.8 mm, while the maximum horizontal displacement of the station is 7.6 mm. The maximum cumulative increment of bending moment is 155.9 kN·m/m. The maximum x-directional horizontal displacement of shield tunnel is 4.7 mm. The maximum settlement value of shield tunnel is 3.8 mm, which occurs when the tunnel is excavated from area A1 to the bottom of the pit. |
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| Keywords: | bilateral deep foundation pit subway station shield tunnel ABAQUS influence |
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