Computational model and mechanical characteristics of linings of special-shaped shield tunnels

被引：0
|
作者：
Zhu Y.-T. [1 ,2 ]
Zhu Y.-F. [2 ]
Zhang Z.-X. [1 ]
Huang X. [1 ]
机构：
[1] Department of Geotechnical Engineering, Tongji University, Shanghai
[2] Shanghai Tunnel Engineering Co., Ltd., Shanghai
来源：
Zhang, Zi-Xin (zxzhang@tongji.edu.cn) | 2018年 / Chinese Society of Civil Engineering卷 / 40期
关键词：
Joint rotational stiffness; Prototype test; Shell-spring model; Special-shaped shield;
D O I：
10.11779/CJGE201807009
中图分类号：
学科分类号：
摘要：
The change laws of rotational stiffness of ring joints with depth are analyzed based on the loading tests on three full-ring special-shaped shield linings. A computational model for shell-spring of special-shaped shield linings is established adopting the rotational stiffness of joints obtained from the prototype tests. The distribution mode of internal forces for special-shaped shield linings is determined. The test results obtained from the prototype tests are compared with those from the modified routine method and the shell-spring model. It is shown that the modified routine method as the common design method is effectively reliable, and the shell-spring model is recommended as the most effective computational model because the obtained mechanical characteristics of special-shaped shield linings are the closest to the reality. Finally, from the economical and mechanical perspectives, the application of special-shaped tunnels under shallow overburden condition is more scientific and reasonable in comparison to either the circular or the rectangular tunnels. © 2018, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
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页码：1230 / 1236
页数：6
相关论文
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