Theoretical calculations of transverse force on shield tunnel caused by eccentric load

被引：0
|
作者：
Wei G. [1 ]
Hong W. [2 ]
Wei X. [1 ]
Lin X. [1 ]
Wang L. [2 ]
机构：
[1] Department of Civil Engineering, Zhejiang University City College, Hangzhou
[2] College of Civil Engineering and Architecture, Zhejiang University, Hangzhou
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Eccentric loading; Modified routine method; Shield tunnel; Transverse force;
D O I：
10.11817/j.issn.1672-7207.2019.07.018
中图分类号：
学科分类号：
摘要：
For the phenomenon of tunnels damaged by eccentric loading conditions in the vicinity of tunnel, considering the influence of eccentric load and shield lining ring forces, based on the modified routine method, the calculation formulas of lining confining pressure and internal force(bending moment, axial fore, shear fore) were derived. An example analysis was carried out to analyze the influence rule of the weight of load, the position of load and depth of tunnel on the lining confining pressure and internal force of the tunnel. The results show that the eccentric load causes the asymmetrical distribution of tunnel lining confining pressure. The confining pressure on the loading side is greater than that on the non-loading side, and the maximum confining pressure appears below the loading side. Eccentric load has greater influence on the bending moment and shear force of the loading side, and has less influence on the axial force. With the constantly increase of the load, lining confining pressure and shear force become larger and the position of zero shear force remains unchanged. As the offset distance becomes larger in the center of the heap, lining confining pressure and bending moment decrease continuously. As the tunnel depth increases, the tunnel lining confining pressure and the axial force increase and the impact of the surcharge decreases. © 2019, Central South University Press. All right reserved.
引用
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页码：1645 / 1654
页数：9
相关论文
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