复杂地下通道施工对地铁隧道影响全过程分析

于峰泉; 吴伟; 安然; 成怡冲

doi:10.20265/j.cnki.issn.1007-2993.2023-0699

复杂地下通道施工对地铁隧道影响全过程分析

doi: 10.20265/j.cnki.issn.1007-2993.2023-0699

于峰泉^1,,
吴伟²,
安然^3, ,,
成怡冲³

1.
宁波市轨道交通集团有限公司，浙江宁波　315100
2.
宁波市轨道交通集团有限公司运营分公司，浙江宁波　315100
3.
浙江华展研究设计院股份有限公司，浙江宁波　315012

详细信息

作者简介:
于峰泉，男，1980年生，大学本科，高级工程师，主要从事轨道交通方面的设计与研究。E-mail: 374875404@qq.com

通讯作者:
安　然，女，1988年生，硕士，高级工程师，主要从事岩土工程方面的设计与研究。E-mail: 564455134@qq.com

中图分类号: U456；TU470
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- 文章访问数: 3
- HTML全文浏览量: 3
- PDF下载量: 1
- 被引次数: 0
出版历程
- 收稿日期: 2023-08-15
- 修回日期: 2023-11-26
- 录用日期: 2023-12-25
- 网络出版日期: 2025-02-21
- 刊出日期: 2025-02-21

Whole process analysis of the impact of complex underground passage construction on subway tunnel

Yu Fengquan^1
,,
Wu Wei²,
An Ran^{3
, ,},
Cheng Yichong³

1.
Ningbo Rail Transit Group Co., Ltd., Ningbo 315100, Zhejiang, China
2.
Ningbo Rail Transit Group Co., Ltd., Operation Branch, Ningbo 315100, Zhejiang, China
3.
Zhejiang Huazhan Institute of Engineering Research and Design, Ningbo 315012, Zhejiang, China

摘要

摘要: 基于宁波某紧邻隧道的地下通道基坑及顶管工程，结合监测数据，分析施工全过程对地铁隧道影响。监测数据表明，全圆MJS工法、水泥搅拌桩和高压旋喷桩施工对隧道产生较大影响，引起隧道产生较大隆起、远离施工方向的水平位移和缩径；未限时浇筑底板、两道支撑连续拆除、顶板较长时间未完全封闭，均导致隧道水平位移和收敛较大增长。顶管施工期间，平行隧道和下卧隧道变形包括初始沉降、隆起增加和后期下沉阶段。紧邻地铁的复杂地下工程，需重视全过程变形控制，以实现隧道变形控制目标。
- 地铁 /
- 变形 /
- 基坑 /
- 顶管 /
- 地下通道 /
- 桩基施工
Abstract: Based on the foundation pit and pipe jacking project of an underground passage near a tunnel in Ningbo, combined with incorporating monitoring data, an analysis was conducted on the impact of the whole construction process on the adjacent subway tunnel. Monitoring data indicate that full-circle MJS, cement mixing piles, and high-pressure jet grouting piles significantly influenced the tunnel, causing substantial uplift, horizontal displacement away from the construction area, and diameter reduction. Additionally, untimely pouring of the base slab, consecutive removal of two supports, and prolonged incomplete closure of the top slab resulted in significant increases in tunnel horizontal displacement and convergence. During the pipe jacking, deformations in parallel and underpass tunnels included initial settlement, increased uplift, and later subsidence. For complex underground projects near subways, emphasis on comprehensive deformation control is essential to achieve tunnel deformation management.
- subway /
- deformation /
- foundation pit /
- pipe jacking /
- underground passage /
- pile foundation construction

HTML全文

图 1 本工程总平面图

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图 2 1号出入口与轨道交通结构剖面关系图（单位：mm）

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图 3 1号出入口南侧下行线隧道位移累计分布曲线（竖向围护加固施工阶段）

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图 4 下行线隧道位移分布曲线（竖向围护加固施工阶段）

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图 5 1号出入口南侧下行线隧道位移累计分布曲线（开挖阶段）

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图 6 15—19号监测点下行线竖向位移随时间变化曲线

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图 7 6—8号监测点下行线竖向位移随时间变化曲线

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图 8 基坑、顶管和轨道交通结构放大图

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图 9 隧道位移反分析结果

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表 1 土体主要物理力学参数

土层名称	层厚 /m	E_s /MPa	γ /(kN·m⁻³)	c /kPa	φ /(°)	含水率 /%
①₁黏土	0.6～1.4	4.02	18.4	23.5	11.3	35.7
②₁淤泥质黏土	0.6～3.2	2.06	17.0	12.0	7.8	51.0
②₂黏土	0.7～1.2	3.44	18.0	21.4	11.2	40.7
②₃淤泥	7.2～8.4	2.03	16.8	12.6	7.9	53.1
②₄淤泥质粉质黏土	1.1～3.4	2.70	18.1	13.4	10.2	37.5
③粉质黏土	1.7～3.7	3.64	18.7	14.5	11.1	32.9
④淤泥质黏土	1.1～4.6	2.07	17.6	14.9	9.1	44.3
⑤粉质黏土	8.7～16.1	5.61	19.0	33.0	17.0	31.0

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