盾构隧道管片新型快拼G接头结构设计及抗弯性能分析  

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

作　　者：宋晓利 史林肯 魏英杰 穆晓凯[1] 郭正刚[1] 孙伟[1] SONG Xiaoli;SHI Linken;WEI Yingjie;MU Xiaokai;GUO Zhenggang;SUN Wei(School of Mechanical Engineering,Dalian University of Technology,Dalian 116023,Liaoning,China;China Railway 14th Bureau Group Co.,Ltd.,Jinan 250000,Shandong,China)

机构地区：[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　　处：《隧道建设(中英文)》2025年第1期199-208,共10页Tunnel Construction

基　　金：国家重点研发计划资助项目(2022YFC3802300)。

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%。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.

关 键 词：盾构隧道 新型快拼接头 抗弯刚度 结构设计 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]