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隧道建设（中英文） ›› 2025, Vol. 45 ›› Issue (1): 199-208.DOI: 10.3973/j.issn.2096-4498.2025.01.017

• 规划与设计 • 上一篇    下一篇

盾构隧道管片新型快拼G接头结构设计及抗弯性能分析

宋晓利1， 史林肯2， 魏英杰2， 穆晓凯1, *， 郭正刚1， 孙伟1   

  1. (1. 大连理工大学机械工程学院， 辽宁 大连 116023； 2. 中铁十四局集团有限公司， 山东 济南 250000)
  • 出版日期:2025-01-20 发布日期:2025-01-20
  • 作者简介:宋晓利（1998—），男，山东日照人，大连理工大学智能制造技术专业在读硕士，研究方向为隧道与地下工程。 E-mail: songxiaoli@mail.dlut.edu.cn。 *通信作者： 穆晓凯， E-mail: muxiaokai@dlut.edu.cn。

Structural Design and Bending Performance Analysis of a Novel Fast Assembling G Joint for Shield Tunnel Segments

SONG Xiaoli1, SHI Linken2, WEI Yingjie2, MU Xiaokai1, *, GUO Zhenggang1, SUN Wei1   

  1. (1. School of Mechanical Engineering, Dalian University of Technology, Dalian 116023, Liaoning, China; 2. China Railway 14th Bureau Group Co., Ltd., Jinan 250000, Shandong, China)

  • Online:2025-01-20 Published:2025-01-20

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摘要： 针对现有盾构隧道传统管片接头拼装效率低、连接件抗弯性能不足等问题，开展面向快拼式的新型G接头结构设计及抗弯性能分析研究。首先，基于零件设计方法及传统C-T接头结构，提出一种新型快拼G接头设计方案；其次，基于设计方案完成G接头设计，并结合实际工况开展G接头力学特性分析； 然后，基于G接头抗拉力学性能开展结构优化设计，最终确定满足快拼特点及力学特性的新型快拼G接头形式； 最后，基于结构、材料等属性特征建立3种管片接头模型，并结合实际工况开展斜螺栓接头、C-T接头和G接头的抗弯刚度分析，对比三者的接头变形与弯矩转角。结果表明： 新型G接头实现了抗弯刚度提升，相对斜螺栓接头、C-T接头分别提升289%、161%。

关键词: 盾构隧道, 新型快拼接头, 抗弯刚度, 结构设计

Abstract: The traditional segment joint of shield tunnels has several drawbacks, such as low assembly efficiency and poor bending performance. To address these issues, a structural design and bending performance analysis of a novel G joint is conducted. First, a novel fast assembling G joint design is proposed by combining the part design method with the traditional C-T joint structure. Based on this design proposal, a G joint is developed, and its mechanical characteristics are analyzed under actual working conditions. Following this, the structural design of the G joint is further optimized, focusing on its tensile properties. This process led to the creation of a fast-splicing head satisfying the requirements for fast splicing and strong mechanical performance. Finally, three segment joint models are established, considering their structural and material attributes. The bending stiffness of the inclined bolt joint, C-T joint, and the G joint is analyzed based on real-world conditions. Their deformation and bending moment angles are compared. The results reveal that the bending stiffness of the novel G joint is 289% higher than that of the inclined bolt joint and 161% higher than the C-T joint.

Key words: shield tunnel, novel fast assembling joint, bending stiffness, structural design

主办单位：中铁隧道勘察设计研究院有限公司    主管单位：中铁隧道局集团有限公司

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