Numerical Analysis of New Stainless-Steel Corrugated-Plate Reinforcement of Shield-Tunnel Segmental Joints Based on Virtual-Tracking-Element Technology

被引：2

作者：

Ding, Wenqi ^{[1
,2
]}

Ma, Chang ^{[1
,2
]}

Guo, Yingjie ^{[1
,2
]}

Li, Xiaoran ^{[1
,2
]}

Li, Shuobiao ^{[1
,2
]}

机构：

[1] Tongji Univ, Coll Civil Engn, Dept Geotech Engn, Shanghai 200092, Peoples R China

[2] Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai 200092, Peoples R China

来源：

APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 10期

基金：

国家重点研发计划;

关键词：

numerical analysis; virtual tracking element; segmental joints; stainless-steel corrugated plate; tunnel reinforcement;

D O I：

10.3390/app13105904

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Shield tunnels inevitably endure various forms of damage as their service times increase. Steel corrugated plates have been used extensively under multiple conditions and have proven effective in strengthening segmental joints, according to full-scale tests. A numerical model is proposed to probe the feasibility of using a new stainless-steel corrugated plate (SSCP) to reinforce shield-tunnel segments. A new method, called virtual-tracking-element technology, is employed to achieve the simulation of a realistic stress state of the segmental joint. Moreover, a segmental-joint-component analysis and a parametric study were conducted based on the numerical model. The results demonstrate that: (1) the virtual-tracking-element technology is a valid and efficient approach to the simulation of the secondary-stress state of segmental joints; (2) SSCP reinforcement is not fully utilized when the grade of segmental concrete is C50, and it has a wide safety margin for potential overload; (3) SSCP reinforcement performs well regardless of the burial depth, and reinforcement in advance is recommended.

引用

页数：13