Results 81 to 90 of about 6,084 (206)

A computer-vision-based model updating strategy for shield tunnels with cracks [PDF]

Publisher Copyright: © 2024 The Author(s).This paper presents a method that enables a finite element (FE) model of shield tunnels to update the geometric changes caused by cracks, using computer vision (CV) techniques and geometric analyses.
Chang, Xiangyu, Fu, Yuguang, Zhang, Youqi   +2 more
core   +1 more source

Impact of Interval Shield Tunneling on Under-construction Mined Tunnels

Chengshi guidao jiaotong yanjiu
ObjectiveThrough numerical simulation，the mechanical impact of interval shield tunneling on adjacent under-construction mined tunnel is evaluated. MethodBased on ANSYS finite element analysis software，a mechanical model of a newly constructed shield ...
Yang ZHAO, Yiheng ZHAO
doaj   +1 more source

Experimental Verification on Stiffness Effective Rate for Shield Tunnel 3D Printing Model

Chengshi guidao jiaotong yanjiu
［Objective］ In order to explore the feasibility of 3D printing technology in making tunnel models, it is necessary to determine the effective rate values of the shield tunnel longitudinal and lateral stiffness.
CHEN Li, LI Bo, LU Sheng’an, ZHANG Haitao, LYU Yanhao   +4 more
doaj   +1 more source

Analytical solution for equivalent stiffness of shield tunnels under combined action of longitudinal channel steel and axial force

Yantu gongcheng xuebao
To accurately and quickly predict the effects of longitudinal channel steel reinforcement technology on the equivalent stiffness of a shield tunnel, the theoretical researches are conducted on the longitudinal channel steel reinforcement technology.
JIANG Xuehui 1, 2, YAN Jianwei 1, LUO Wenjun 1, LIU Tianyu 1, XU Changjie 1
doaj   +1 more source

Influence of ultra-close undercrossing shield on deformation of existing tunnels

Yantu gongcheng xuebao
With continuous development of urban construction in recent years, many Chinese cities have successively developed and increased the construction of urban rail transit projects, and the construction of the metro engineering causes surrounding surface ...
DAI Zhengbin1, 2 , LU Yunlong1, 2
doaj   +1 more source

Substantiation of the Parameters of the Tunnel Lining of the Running Tunnel During Shield Penetration [PDF]

UKR: Магістерська робота виконана на 60 сторінках, містить 17 ілюстрацій, 5 таблиць та 12 використаних джерел. В магістерській роботі виконано варіантне проєктування оправи перегінного тунелю, що споруджується щитовим способом.
Москвич, Олександр Романович
core  

Ground settlement and tunnel response due to twin-curved shield tunnelling in soft ground with small clear distance

Journal of Rock Mechanics and Geotechnical Engineering
Twin curved tunnels are often encountered in shield tunnelling, where significant complexities in densely exploited underground space are observed. In this study, the ground settlement and tunnel deformation due to twin-curved shield tunnelling in soft ...
Yao Hu, Haoran Tang, Yinggang Xu, Huayang Lei, Peng Zeng, Kai Yao, Yabo Dong   +6 more
doaj   +1 more source

Deformation analysis of ground and existing tunnel induced by overlapped curved shield tunneling [PDF]

The deformation caused by tunnel excavation is quite important for safety, especially when it is adjacent to the existing tunnel. Nevertheless, the investigation of deformation characteristics in overlapped curved shield tunneling remains inadequate. The
Liang Shi, Yingnan Liu, Gang Zheng, Huayang Lei, Mengting Wang   +4 more
core   +1 more source

Influence of the Diameter Size on the Deformation and Failure Mechanism of Shield Precast Segmental Tunnel Lining under the Same Burial Depth

Buildings
With the development of large-diameter shield tunnels, how to realize effective security and stability control of shield tunnel lining has become a significant research topic.
Jun Zhou, Kaihang Han, Weitao Chen
doaj   +1 more source

Health Risk Prediction of Operational Subsea Tunnel Structure Based on Bayesian Network

Buildings
Recently, subsea tunnel construction has developed rapidly in China. The traffic volume of subsea metro tunnels is large. Once a safety accident occurs, economic losses and social impacts will be extremely serious.
Hongmei Ni, Xia Li, Jingqi Huang, Shuming Zhou   +3 more
doaj   +1 more source