| 地铁隧道盾构施工引起的古城墙变形规律及其控制技术 |
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| 引用本文： | 任建喜,张引合,冯超.地铁隧道盾构施工引起的古城墙变形规律及其控制技术[J].岩土力学,2011,32(Z1):445-0450. |
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| 作者姓名： | 任建喜 张引合 冯超 |
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| 作者单位： | 西安科技大学建筑与土木工程学院;煤炭科学研究总院重庆研究院;中铁电气化局西安铁路工程有限公司 |
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| 基金项目： | 陕西省教育厅科研计划项目资助(No.2010JK667) |
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| 摘 要： | 以西安地铁2号线区间隧道下穿南门古城墙工程为依托,通过建立FLAC3D数值模型对可能的3种施工方案进行了对比分析,建议将管片支护及壁后注浆、城门基础范围内土体化学注浆加固和城墙南面基础附近施工钻孔灌注桩的联合变形控制方案作为最优的可行性方案,并对该方案引起的古城墙变形规律进行了预测研究,根据预测结果制定了监测方案。工程实践表明,建议的古城墙变形控制施工技术是合理的,隧道施工时引起的城墙和地表变形值处于安全值范围内。得到的地铁隧道盾构施工引起的古城墙变形规律及其控制技术对西安地铁1号线下穿东西古城墙的安全施工具有借鉴价值。
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| 关 键 词： | 盾构隧道施工 古城墙 变形规律 现场监测 控制技术 |
| 收稿时间： | 2010-06-22 |
Study of the deformation law of the ancient city wall induced by metro shield tunneling and its control technology |
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| REN Jian-xi,ZHANG Yin-he,FENG Chao.Study of the deformation law of the ancient city wall induced by metro shield tunneling and its control technology[J].Rock and Soil Mechanics,2011,32(Z1):445-0450. |
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| Authors: | REN Jian-xi ZHANG Yin-he FENG Chao |
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| Institution: | 1. School of Civil Engineering and Architecture, Xi?an University of Science and Technology, Xi?an 710054, China; 2. Chongqing Research Institute, Coal Science Research Institute, Chongqing 400037, China; 3. CREC Electrification Bureau Xi?an Railway Engineering Co., Ltd., Xi?an 710032, China |
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| Abstract: | Based on Xi'an Metro #2 interval tunnel through the south gate of the ancient city wall, three possible construction programs by the establishment of FLAC3D numerical model are accomplished. The program is suggested that is formed by segment support and grouting behind the segment, chemical grouting in the soil within the city gate and piling bored piles closed to the ancient city wall south foundation as the best joint construction program. The deformation law of the ancient city wall caused by the joint program is studied; and the monitoring program is given. It is shown that the method suggested of deformation control technique for the ancient city wall is reasonable; and the deformation of the ancient city wall and the surface caused by metro shield tunneling is in the safe range. Deformation law is obtained from the ancient city wall caused by the metro shield tunneling and its control technology. The experience are beneficial to the Xi'an Metro #1 which will be through the east and west ancient city wall. |
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| Keywords: | shield tunneling ancient city wall deformation law monitoring control technology |
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