[1]同庆,庄永香,宁茂权,等.复合地层下穿高速铁路矩形顶管盾构隧道开挖面稳定性研究[J].高速铁路技术,2026,(01):99-104,117.[doi:10.12098/j.issn.1674-8247.2026.01.014]
　TONG Qing,ZHUANG Yongxiang,NING Maoquan,et al.On the Stability of Excavation Face of Rectangular Pipe Jacking Shield Tunnel Crossing under High-speed Railways in Composite Strata[J].HIGH SPEED RAILWAY TECHNOLOGY,2026,(01):99-104,117.[doi:10.12098/j.issn.1674-8247.2026.01.014]
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复合地层下穿高速铁路矩形顶管盾构隧道开挖面稳定性研究()

《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
期数:
2026年01期
页码:
99-104,117
栏目:
研究创新
出版日期:
2026-01-30

文章信息/Info

Title:
On the Stability of Excavation Face of Rectangular Pipe Jacking Shield Tunnel Crossing under High-speed Railways in Composite Strata
文章编号:
1674-8247(2026)01-0099-06
作者:
同庆1; 庄永香2; 宁茂权3; 4; 刘炳杰1; 崔光耀1
(1. 北方工业大学, 北京 100144; 2. 莒南县园林环卫保障服务中心, 山东 临沂 276600; 3.中铁第四勘察设计院集团有限公司, 武汉 430064; 4. 海峡(福建)交通工程设计有限公司, 福州 350004)
Author(s):
TONG Qing1;  ZHUANG Yongxiang2;  NING Maoquan3; 4;  LIU Bingjie1;  CUI Guangyao1
(1.North China University of Technology, Beijing 100144, China; 2. Junan County Garden Sanitation Support Service Center, Linyi 276600, China; 3. China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430064, China; 4. Haixia Traffic Engineering Design Co., Ltd., Fuzhou 350004, China)
关键词:
隧道工程;  矩形顶管盾构;  复合地层;  开挖面稳定性;  近接施工
Keywords:
tunnel engineering;  rectangular pipe jacking shield tunnel;  composite strata;  excavation face stability;  close-space construction
分类号:
U45
DOI:
10.12098/j.issn.1674-8247.2026.01.014
文献标志码:
A
摘要:
为保证矩形顶管盾构隧道开挖面稳定,以某矩形顶管盾构隧道工程为背景,采用有限元软件Abaqus建立了复合地层下穿高速铁路矩形顶管盾构隧道模型,定义了无量纲参数支护应力差率(m)及硬岩比(n),分析了硬岩比、支护应力差率和埋深因子对复合地层矩形顶管盾构施工开挖面失稳范围、开挖面位移及轨道沉降的影响。结果表明,随着复合地层硬岩比的增加,矩形顶管盾构隧道开挖面在相同支护应力差率下失稳范围逐渐减小,失稳位移逐渐减小,轨道沉降逐渐减小; 埋深因子越大,开挖面失稳位移越大,轨道沉降越大; 当n < 0.75时,高速铁路轨道沉降易大于沉降阈值,在穿越待建高速铁路线路时可采用桩板结构加固方案,在下穿既有高速铁路段采用人工挖孔桩+D型便梁加固方案来满足施工安全稳定要求。研究成果可为类似工程提供参考。
Abstract:
To ensure the stability of the excavation face of rectangular pipe jacking shield tunneling, a model was established for rectangular pipe jacking shield tunnel crossing under a high-speed railway in composite strata using the finite element software Abaqus. Such dimensionless parameters as support stress difference m and hard rock ratio n were defined, and the effects of hard rock ratio, support stress difference, and burial depth factor on the instability range of the excavation face, excavation face displacement, and track settlement during the tunnel construction in composite strata were analyzed. The results indicate that with an increase in the hard rock ratio of the composite strata, the instability range and displacement of the excavation face gradually decrease under the same support stress difference ratio, and the track settlement also gradually decreases. A larger burial depth factor leads to greater excavation face displacement and increased track settlement. When n< 0.75, the settlement of the high-speed railway track is prone to exceed the settlement threshold. For sections crossing under planned high-speed railway lines, a pile-slab structure reinforcement scheme can be adopted; for sections crossing under existing high-speed railways, a reinforcement scheme combining manually excavated piles and D-type temporary beams can be employed to meet safety and stability requirements during construction. The research findings can provide a reference for similar engineering projects.

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备注/Memo

备注/Memo:
收稿日期:2024-06-24
作者简介:同庆(1999-),男,硕士研究生。
更新日期/Last Update: 2026-01-30