盾构隧道管片环间自适应快速连接件力学性能研究

doi:10.3973/j.issn.2096-4498.2024.S2.018

隧道建设（中英文） ›› 2024, Vol. 44 ›› Issue (S2): 168-178.DOI: 10.3973/j.issn.2096-4498.2024.S2.018

盾构隧道管片环间自适应快速连接件力学性能研究

赵明应^1，2，肖明清^{1， 2}，薛光桥^{1， 2}，刘学增³，付佳卉^{4, 5}

（1. 中铁第四勘察设计院集团有限公司，湖北武汉 430063； 2. 水下隧道技术国家地方联合工程研究中心，湖北武汉 430063； 3. 同济大学土木工程学院，上海 200092； 4. 上海同岩土木工程科技股份有限公司，上海 200092； 5. 上海地下基础设施安全检测与养护装备工程技术研究中心，上海 200092）

出版日期:2024-12-20 发布日期:2024-12-20
作者简介:赵明应（1982—），男，湖北武汉人，2005年毕业于西南交通大学，隧道及地下工程专业，本科，高级工程师，现从事地下工程设计工作。E-mail： 121741878@qq.com。

Mechanical Properties of Self-Adaptive Fast Connectors Between Rings of Shield Tunnel Segments

ZHAO Mingying^{1, 2}, XIAO Mingqing^{1, 2}, XUE Guangqiao^{1, 2}, LIU Xuezeng³, FU Jiahui^{4, 5}

(1. China Railway Siyuan Survey and Design Institute Group Co., Ltd., Wuhan 430063, Hubei, China; 2. Subaqueous Tunnel Technology National Engineering Research Center, Wuhan 430063, Hubei, China; 3. College of Civil Engineering, Tongji University, Shanghai 200092, China; 4. Tongyan Civil Engineering Technology Co., Ltd., Shanghai 200092, China; 5. Shanghai Engineering Research Center of Underground Infrastructure Detection and Maintenance Equipment, Shanghai 200092, China)

Online:2024-12-20 Published:2024-12-20

摘要/Abstract

摘要： 为解决盾构隧道管片环间快速连接件容差性能差、抗拉力受限等问题，提出一种可自动适应误差、高抗拉力的环间快速连接件，通过开展连接件抗拉力学性能试验与数值模拟分析，得到连接件抗拉承载能力、抗拉刚度及结构破坏形态等主要力学性能，验证自适应误差功能下连接件拉拔性能完好性，为快速连接件的推广与应用提供研究基础。结果表明： 1）通过试验得到雌连接件插入力最大值为66.02 kN，拉拔承载力为521.49 kN，整体纵向拉拔刚度为1.72×10⁷ N/m；雄连接件结构单独的拉拔承载力为508.77 kN，纵向拉拔刚度为1.81×10⁷ N/m。2）拉拔试验破坏位置基本发生在连接件锚固结构，主要受力结构均未发生明显变形破坏。3）数值模拟结果展示了连接件主要受力结构的拉拔破坏形式，连接杆发生大面积应力屈服，雄、雌连接件内部结构应力未达到屈服强度或发生局部屈服，验证了连接件受力薄弱部位为连接杆位置。4）对比雄连接件不同滑动偏移情况下的拉拔模拟结果，验证了连接件在自适应误差情况下整体拉拔性能的完好性。

关键词: 盾构隧道, 环间自适应快速连接件, 抗拉承载力, 抗拉刚度

Abstract: The fast connectors between rings of shield tunnel segments has poor tolerance performance and limited tensile strength. The address these issues, a fast connector between rings with automatic error adaptation and high tensile strength is designed and developed. The main mechanical properties such as tensile capacity, tensile stiffness, and structural damage morphology of the connectors are obtained by conducting tensile performance tests and numerical simulation analysis of the connectors, validating the perfect tensile performance of the connectors with self-adaptive error function. This provides a research foundation for the promotion and application of fast connectors. The results reveal the following: (1) The maximum insertion force of the female connector is 66.02 kN, the tensile bearing capacity is 521.49 kN, the overall longitudinal tensile stiffness is 1.72×10⁷ N/m, and the tensile bearing capacity and the longitudinal tensile stiffness of the male connector structure are 508.77 kN and 1.81×10⁷ N/m, respectively. (2) The damage of the connector during tensile test basically occurs at the anchoring structure, and no obvious deformation damage occurs in the main stressed structure.(3) Numerical simulation results demonstrate the form of tensile damage in the main stressed structure of the connectors. The connecting rod shows a large area of stress yielding; the internal structural stress in the connectors does not reach the yield strength, and no partial yielding occurs, which shows that the connecting rod is a weak part of the connectors. (4) The tensile simulation results of male connectors under different sliding offsets reveals the integrity of the overall tensile performance of the connectors under self-adaptive error conditions.

Key words: shield tunnel, self-adaptive fast connectors between rings, tensile load capacity, tensile stiffness

赵明应, 肖明清, 薛光桥, 刘学增, 付佳卉. 盾构隧道管片环间自适应快速连接件力学性能研究[J]. 隧道建设, 2024, 44(S2): 168-178.

ZHAO Mingying, XIAO Mingqing, XUE Guangqiao, LIU Xuezeng, FU Jiahui. Mechanical Properties of Self-Adaptive Fast Connectors Between Rings of Shield Tunnel Segments[J]. Tunnel Construction, 2024, 44(S2): 168-178.

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盾构隧道管片环间自适应快速连接件力学性能研究

Mechanical Properties of Self-Adaptive Fast Connectors Between Rings of Shield Tunnel Segments

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