Study on calculation of shield tunnel shearing dislocation platform deformation due to adjacent ground stacked load

被引：2
|
作者：
Wei G. [1 ]
Yu G. [2 ]
Hong W. [3 ]
机构：
[1] Department of Civil Engineering, Zhejiang University City College, Hangzhou
[2] Department of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan
[3] Institute of Geotechnical Engineering, Zhejiang University, Hangzhou
来源：
Wei, Gang (weig@zucc.edu.cn) | 1775年 / Central South University of Technology卷 / 49期
基金：
中国国家自然科学基金;
关键词：
Ground stacked load; Longitudinal displacement; Shearing dislocation platform; Shield tunnel;
D O I：
10.11817/j.issn.1672-7207.2018.07.026
中图分类号：
学科分类号：
摘要：
The additional stress on the axis of shield tunnel was calculated by using the Boussinesq formula due to the adjacent ground stacked load. Then with the shearing dislocation platform model the vertical displacement, the dislocation of adjacent segments and the interannular shearing force of the subway shield tunnel in the sub-layer were calculated. In addition, an example analysis was made to study the influence on value of ground stacked load q, the offset distance of the ground stacked load s, the thickness of covering soil upon the shield tunnel h and the shield tunnel and the size of ground stacked load B and L. The results show that the bigger the numerical value of stacked load q is, the bigger the settlement of the shield tunnel is, but the influence range of the shield tunnel’s settlement does not become bigger. The bigger the distance between the shield tunnel and the center of the ground stacked load is, the smaller the settlement of the shield tunnel is, and the shrinking speed of the settlement is bigger. As the offset distance s becomes bigger, the horizontal displacement of shield tunnel increases first and then shrinks. The thicker the covering soil is, the smaller the maximum settlement of the shield tunnel is, but the influence range of settlement of shield tunnel is bigger. The change of length of ground stacked load has a bigger influence on the settlement of the shield tunnel. The settlement of the shield tunnel is bigger than its horizontal displacement. © 2018, Central South University Press. All right reserved.
引用
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页码：1775 / 1783
页数：8
相关论文
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