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隧道建设(中英文) ›› 2026, Vol. 46 ›› Issue (5): 1005-1015.DOI: 10.3973/j.issn.2096-4498.2026.05.009

• 研究与探索 • 上一篇    下一篇

考虑管片环间摩擦力的盾构隧道上浮量计算模型

朱文凯1, 2, 孙天赦3, 程诚1, 2, *, 史培新1, 2, 李开银3   

  1. (1. 苏州大学轨道交通学院, 江苏 苏州 215131; 2. 苏州大学 江苏省智慧城轨工程研究中心,江苏 苏州 215131; 3. 中铁四局集团第二工程有限公司, 江苏 苏州 215100)
  • 出版日期:2026-05-20 发布日期:2026-05-20
  • 作者简介:朱文凯(2001—),男,河南平顶山人,苏州大学交通运输工程专业在读硕士,研究方向为盾构隧道结构变形及控制。 E-mail: 20234246011@stu.suda.edu.cn。 *通信作者: 程诚, E-mail: chengcheng018@suda.edu.cn。

Analytical Model for Calculating Shield Tunnel Lining Uplift Considering Inter-Ring Friction Between Adjoining Segments

ZHU Wenkai1, 2, SUN Tianshe3, CHENG Cheng1, 2, *, SHI Peixin1, 2, LI Kaiyin3   

  1. (1. School of Rail Transportation, Soochow University, Suzhou 215131, Jiangsu, China; 2. Intelligent Urban Rail Engineering Research Center of Jiangsu Province, Soochow University, Suzhou 215131, Jiangsu, China; 3. Second Engineering Co., Ltd. of CTCE Group, Suzhou 215100, Jiangsu, China)
  • Online:2026-05-20 Published:2026-05-20

摘要: 为准确计算盾构掘进施工引起的隧道上浮量,以苏州市阳澄湖第3通道盾构隧道工程为依托,基于弹性地基梁理论,构建考虑管片环间摩擦力的隧道上浮量计算模型,推导出施工期间隧道结构的上浮量解析解,揭示管片环间摩擦力对隧道纵向变形的影响规律。研究结果表明: 1)在本文案例中,采用本文模型计算得到的隧道最大上浮量为65 mm,最大上浮位置出现在距盾尾约24 m处,计算结果与现场实测数据吻合较好,验证了该计算模型的可行性; 2)管片环间摩擦力抑制部分错台变形发生,摩擦约束作用下的错台变形发生在距盾尾后约7.5 m范围内,若不考虑管片环间摩擦力则会高估错台范围及错台量; 3)隧道上浮量及错台量随注浆压力与浆液凝固时间的减小而增大,随千斤顶推力及环间摩擦因数的增大而增大,其中,注浆压力与浆液凝固时间对隧道整体上浮的影响更为显著,千斤顶推力及环间摩擦因数对错台变形的影响较大。结合隧道上浮量计算结果,建议加强盾尾后7.5 m范围内的环缝状态检查,及时复紧螺栓; 建议采用早强速凝型浆液,浆液凝固时间宜控制在4 h以内; 施工中的环间摩擦因数宜控制在0.5以上。

关键词: 盾构隧道, 上浮量, 管片错台, 环间摩擦力, 弹性地基梁

Abstract:

To enhance the calculation accuracy of shield tunnel uplift deformations, a novel analytical model has been developed to predict tunnel lining uplift. The model is predicated on the Yangcheng Lake 3rd Passage in Suzhou, China, and incorporates the elastic foundation beam theory and the interring friction effect. The analytical solution for segment uplift during construction is derived according to the proposed model, thereby revealing the impact of interring friction effect on tunnel longitudinal deformations. The results of the study indicate the following: (1) In the studied case, the model yielded a maximum uplift of 65 mm at approximately 24 m behind the shield tail, and the calculated results are in great agreement with field measurements. This verifies the feasibility of the proposed prediction model. (2) The presence of interring friction serves to suppress a portion of the segment misalignment. Consequently, under the constraints imposed by frictional forces, segment misalignment predominantly manifests within a range of 7.5 m behind the shield tail. In the absence of interring friction, the observed occurrence range and deformation magnitude are both underestimated. (3) Parameter analysis indicates that tunnel uplift deformation increases with an increase in grouting pressure and grout setting time, as well as with increasing jack thrust and interring friction coefficient. Notably, grouting pressure and grout setting time exert a more significant influence on the overall tunnel uplift, while jack thrust and interring friction coefficients primarily dictate the magnitude of misalignment. Considering these findings, it is recommended that joint status inspections be intensified and that bolts within 7.5 m behind the shield tail be retightened. Additionally, the utilization of a rapid-setting early-strength grout, with a setting time of 4 hours, is recommended, and interring friction coefficient should be maintained above 0.5.

Key words: shield tunnel, lining uplift deformation, segment misalignment, interring friction, elastic foundation beam theory