长江科学院院报 ›› 2017, Vol. 34 ›› Issue (8): 125-129.DOI: 10.11988/ckyyb.20160783

• 岩土工程 • 上一篇    下一篇

隧道施工中盾构机吊装对基坑支护结构稳定的影响

孔庆梅a, 温森a, b, 赵丽敏a   

  1. 河南大学 a.土木建筑学院;
    b.材料与结构研究所,河南 开封 475004
  • 收稿日期:2016-08-04 修回日期:2016-10-13 出版日期:2017-08-01 发布日期:2017-08-18
  • 作者简介:孔庆梅(1978-),女,河南新乡人,讲师,硕士,主要从事地下结构方面的研究工作,(电话)15937872603(电子信箱)10193197@qq.com。

Influence of Shield Lifting on Supporting Structure of Pit During Tunnel Construction

KONG Qing-mei1, WEN Sen1, 2, ZHAO Li-min1   

  1. 1.School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China;
    2.Institute of Materials and Structures, Henan University, Kaifeng 475004, China
  • Received:2016-08-04 Revised:2016-10-13 Online:2017-08-01 Published:2017-08-18
  • Contact: 温 森(1981-),男,河南信阳人,副教授,硕士生导师,博士,主要从事地下工程方面的研究,(电话)15137857731(电子信箱)wsen919@126.com。
  • Supported by:
    国家自然科学基金项目(51608174); 河南省科技发展计划项目(162102310603); 河南省科技攻关计划项目(152102310299)

摘要: 盾构机吊装是盾构法隧道施工中的重要步骤,由于盾构机本身体型大、荷载重、起吊时间短的特点,盾构机吊装成为隧道盾构施工过程中的一个危险因素。在盾构机吊装过程中,对连续墙的位移、支撑杆的轴向力和变形进行了实时监测,针对盾构起吊过程短暂、监测实施困难的特点,采用有限元分析法,将现场实测数据与有限元计算结果进行对比分析。研究结果表明:盾构机的吊装过程中,隧道开挖支护结构是安全稳定的,有限元分析方法也是有效的。此研究成果可为相似工况其他隧道工程中的盾构机吊装安全稳定分析提供参考。

关键词: 盾构吊装, 隧道施工, 数值分析, 监测数据, 支护结构, 基坑支护

Abstract: Shield lifting is an important procedure in tunnel construction by shield method. Due to the large size of shield, heavy load and short lifting time, lifting process becomes a big risk in shield tunnel construction. During the lifting process, the displacement of continuous wall, the axial forces and deformation of supports were monitored in real time. Finite element method(FEM) was applied because the lifting process is very short and some monitoring programs are difficult to be conducted. Results showed that the data from FEM proved to be effective in comparison with measured data and the excavation is safe during the shield uplifting. The research results provide references for similar projects.

Key words: shield lifting, tunnel construction, numerical analysis, monitoring data, supporting structure

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