Mechanical behavior of secondary tunnel lining with longitudinal crack

Xu, Guowen; He, Chuan; Chen, Ziquan; Liu, Chuankun; Wang, Bo; Yu-lin, Zou

doi:10.1016/j.engfailanal.2020.104543

Cited by 45 publications

(11 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result indicates that the direct influence from narrow cracks with a limited depth is negligible with respect to the structural capacity. Xu et al [ 29 ] combined scaled physical tests and numerical simulations using the finite element method (FEM) to investigate how the presence of cracks affects the mechanical behavior of concrete lining. The existing cracks had a depth equal to half of the model thickness and ran across the entire model width.…”

Section: Damage and Degradation Of Concrete In Tunnelsmentioning

confidence: 99%

See 1 more Smart Citation

Towards Automated Inspections of Tunnels: A Review of Optical Inspections and Autonomous Assessment of Concrete Tunnel Linings

Sjölander

Belloni

Ansell

et al. 2023

Sensors

View full text Add to dashboard Cite

In recent decades, many cities have become densely populated due to increased urbanization, and the transportation infrastructure system has been heavily used. The downtime of important parts of the infrastructure, such as tunnels and bridges, seriously affects the transportation system’s efficiency. For this reason, a safe and reliable infrastructure network is necessary for the economic growth and functionality of cities. At the same time, the infrastructure is ageing in many countries, and continuous inspection and maintenance are necessary. Nowadays, detailed inspections of large infrastructure are almost exclusively performed by inspectors on site, which is both time-consuming and subject to human errors. However, the recent technological advancements in computer vision, artificial intelligence (AI), and robotics have opened up the possibilities of automated inspections. Today, semiautomatic systems such as drones and other mobile mapping systems are available to collect data and reconstruct 3D digital models of infrastructure. This significantly decreases the downtime of the infrastructure, but both damage detection and assessments of the structural condition are still manually performed, with a high impact on the efficiency and accuracy of the procedure. Ongoing research has shown that deep-learning methods, especially convolutional neural networks (CNNs) combined with other image processing techniques, can automatically detect cracks on concrete surfaces and measure their metrics (e.g., length and width). However, these techniques are still under investigation. Additionally, to use these data for automatically assessing the structure, a clear link between the metrics of the cracks and the structural condition must be established. This paper presents a review of the damage of tunnel concrete lining that is detectable with optical instruments. Thereafter, state-of-the-art autonomous tunnel inspection methods are presented with a focus on innovative mobile mapping systems for optimizing data collection. Finally, the paper presents an in-depth review of how the risk associated with cracks is assessed today in concrete tunnel lining.

show abstract

Section: Damage and Degradation Of Concrete In Tunnelsmentioning

confidence: 99%

“…Through numerical simulations, it was shown that existing cracks far apart did not influence each other, and their effects could be treated separately. When cracks appeared closer together, a coupling effect existed between the cracks, which should be accounted for [ 29 ].…”

Section: Damage and Degradation Of Concrete In Tunnelsmentioning

confidence: 99%

Towards Automated Inspections of Tunnels: A Review of Optical Inspections and Autonomous Assessment of Concrete Tunnel Linings

Sjölander

Belloni

Ansell

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…By the end of 2020, China's railway system had a total working distance of 145,000 km, including 16,798 railway tunnels with a total length of around 19,630 km. With the rapid advancement of tunnel construction, the illness problem associated with tunnel operation has grown in prominence, particularly the lining crack, which poses a significant hidden threat to the tunnel's safe operation [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Study on Crack Propagation Parameters of Tunnel Lining Structure Based on Peridynamics

Xiong¹,

Zhang²,

Zhao³

et al. 2023

Computer Modeling in Engineering &Amp; Sciences

View full text Add to dashboard Cite

The numerical simulation results utilizing the Peridynamics (PD) method reveal that the initial crack and crack propagation of the tunnel concrete lining structure agree with the experimental data compared to the Japanese prototype lining test. The load structure model takes into account the cracking process and distribution of the lining segment under the influence of local bias pressure and lining thickness. In addition, the influence of preset cracks and lining section form on the crack propagation of the concrete lining model is studied. This study evaluates the stability and sustainability of tunnel structure by the Peridynamics method, which provides a reference for the analysis of the causes of lining cracks, and also lays a foundation for the prevention, reinforcement and repair of tunnel lining cracks.

show abstract

“…To better enhance the protection of tunnel lining and study the mechanical behavior of lining structure due to the existence of lining cracks, many scholars have carried out relevant research. Xu et al [1] conducted a field survey to reveal the cracking of these highway tunnels and finally analyzed the cracking characteristics of intact and cracked linings using similarity model tests. Xu [2] used radar scanning, drilling and coring, and laser scanning to elucidate the tunnel's disease characteristics and failure causes, and also innovatively proposed a set of solutions for cracks, water seepage, inversions, and other diseases.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of a highway tunnel under the influence of lining crack disease

Zhao¹,

Quan²,

Zhou³

et al. 2023

J. vibroeng.

View full text Add to dashboard Cite

Highway tunnels built in China in the early years of operation have different forms of diseases, which have a great impact and threat to the normal operation and safety of the tunnel. To ensure the safety and stability of the lining structure, this paper analyzes the mechanical behavior of the lining structure under the influence of the disease and reveals the evolution law of the lining crack disease for typical tunnel lining cracks. The results of the study show that only the circumferential and longitudinal stresses at the vault increase when cracks exist in the inner wall of the lining vault. The longitudinal cracks in the inner wall of the lining have the greatest influence on the lining stress state.

show abstract

Mechanical behavior of secondary tunnel lining with longitudinal crack

Cited by 45 publications

References 21 publications

Towards Automated Inspections of Tunnels: A Review of Optical Inspections and Autonomous Assessment of Concrete Tunnel Linings

Towards Automated Inspections of Tunnels: A Review of Optical Inspections and Autonomous Assessment of Concrete Tunnel Linings

Study on Crack Propagation Parameters of Tunnel Lining Structure Based on Peridynamics

Mechanical behavior of a highway tunnel under the influence of lining crack disease

Contact Info

Product

Resources

About