• 中国科学引文数据库(CSCD)来源期刊
  • 中文核心期刊中文科技核心期刊
  • Scopus RCCSE中国核心学术期刊
  • 美国EBSCO数据库 俄罗斯《文摘杂志》
  • 《日本科学技术振兴机构数据库(中国)》
二维码

隧道建设(中英文) ›› 2022, Vol. 42 ›› Issue (3): 388-397.DOI: 10.3973/j.issn.2096-4498.2022.03.006

• 研究与探索 • 上一篇    下一篇

矩形顶管隧道接头橡胶圈防水安全限值研究

许有俊1, 2, 裴学军1, *, 董文秀1, 黄正东1, 康佳旺1   

  1. 1. 内蒙古科技大学土木工程学院, 内蒙古 包头 014010; 2. 内蒙古科技大学矿山安全与地下工程院士工作站, 内蒙古 包头 014010

  • 出版日期:2022-03-20 发布日期:2022-04-03
  • 作者简介:许有俊(1979—),男,内蒙古巴彦淖尔人,2011年毕业于北京工业大学,土木工程专业,博士,教授,现从事隧道、地下工程等方面的理论与技术研究工作。 E-mail: xyoujun@163.com。*通信作者: 裴学军, E-mail: 1034192869@qq.com。
  • 基金资助:
    国家自然科学基金(51868062

Waterproof Safety Limit of Rubber Rings of Rectangular Pipe Jacking Tunnel Joints

XU Youjun1, 2, PEI Xuejun1, *, DONG Wenxiu1, HUANG Zhengdong1, KANG Jiawang1   

  1. (1.School of Civil Engineering, Inner Mongolia University of Science & Technology, Baotou 014010,Inner Mongolia, China;2. Academician Workstation of Mine Safety and Underground Engineering,Inner Mongolia University of Science & Technology, Baotou 014010,Inner Mongolia,China)

  • Online:2022-03-20 Published:2022-04-03

摘要: 为研究矩形顶管隧道接头橡胶圈的受力特性和密封性,利用接头细部尺寸关系表达式,计算接头在发生防水失效时的临界状态值,通过有限元软件建立接头安装模型,定量改变接头安装间隙和管节偏转角,将模拟结果与理论计算结果进行对比验证。结果表明: 1)橡胶圈安装力随安装距离的增加表现为先增大到峰值,后减小到定值,且安装间隙的大小对安装力影响显著; 2)橡胶圈压缩高度在8~14 mm时接头防水效果良好,当橡胶圈压缩高度小于8 mm或大于14 mm时,橡胶圈分别因接触压力不足0.3 MPa或过度压缩而不满足规范要求; 3)管节发生偏转时,最大允许的偏转角为0.02 rad,当偏转角进一步增大,依次发生因接触压力不足引起的渗漏水破坏、钢套环与插口管节接触破坏、钢套环与橡胶圈的脱离破坏以及橡胶圈过度压缩导致的破坏。

关键词: 矩形顶管隧道, 接头橡胶圈, 有限元, 安装间隙, 管节偏转角

Abstract: To investigate the mechanical characteristics and sealing property of the rubber ring of a rectangular pipe jacking tunnel joint, the critical state value of the joint in case of waterproof failure is calculated using the joint detail dimension relation expression. Then, the joint′s installation model is established using finite element software, and the joints installation clearance and pipe sections deflection angle are quantitatively changed. Finally, the simulation and theoretical calculation results are compared. The comparative results show the following. (1) The mounting force of the rubber ring increases to the peak value first and then decreases to a constant value with an increase in the mounting distance, and the mounting gaps size significantly affects the mounting force. (2) When the compression height of the rubber ring ranges from 8 to 14 mm, the rubber ring has a good waterproof performance, whereas the rubber ring does not meet the requirements of the specification when the height is <8 or >14 mm due to contact pressure <0.3 MPa and excessive compression. (3) The maximum allowable deflection angle is 0.02 rad when the pipe joint is deflected. When the deflection angle further increases, the leakage damage due to insufficient contact pressure, contact damage between the steel sleeve ring and socket pipe joint, separation damage between the steel sleeve ring and rubber ring, and damage due to excessive compression of the rubber ring occurs successively.

Key words: rectangular pipe jacking tunnel, joint rubber ring; finite element, installation gap, pipe joint deflection angle