Automated Construction of Mesoscopic Railway Infrastructure Models Supporting Station Throat Capacity Assessment

Veselý, Petr; Kavička, Antonín; Krýže, Pavel

doi:10.1109/access.2023.3266813

Cited by 1 publication

(1 citation statement)

References 28 publications

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“…China has seen a significant increase in infrastructure construction in recent years, and numerous multi-tunnel proximity projects have been developed underneath existing railway lines, high-speed railway bridges, and train stations 1 – 3 . The dense rail area of a station is an important part of the railway infrastructure, which usually includes many switches and track crossings and is a bottleneck of the traffic capacity of the station 4 . As the operating railway in dense railway areas has strict displacement requirements, tunnel construction can pose risks to train operational safety, increase maintenance costs, and affect the efficiency of train operations.…”

Section: Introductionmentioning

confidence: 99%

Railway track settlement patterns and control measures for multi-tunnel construction underneath a station track group: a case study

Li,

Lu,

Huang

et al. 2024

Sci Rep

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This paper is based on the proximity engineering project of the Baishiyi tunnel group passing under the Chongqing West Station track group. Considering the train load and the spatial relationship of the tunnel and track groups, the settlement patterns, horizontal displacement, and differential settlement of the tunnel–strata–tracks system during the excavation process are studied through theoretical calculations and numerical simulation methods. The results indicate that the tunnel vault, strata, and track settlement deformation patterns are similar. Throughout the tunnel construction process, the tracks underwent uplift, settlement, and eventually stabilized. The settlement trough formed by the excavation of the three tunnels below the track group has an impact range of 25–145 m. Between 35 and 75 m, the differential settlement of the double track gradually increases with excavation. As the tunnel face reaches 75 m, the track differential settlement gradually converges and tends to stabilize. To minimize the impact of underpass tunnel construction on track groups, it is recommended to use a combination of full-section hole grouting and surface reinforcement grouting for ground reinforcement. Additionally, optimizing the construction parameters, including the step length and primary support closure time, and strengthening the locking anchor can further reduce the impact.

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Section: Introductionmentioning

confidence: 99%

Railway track settlement patterns and control measures for multi-tunnel construction underneath a station track group: a case study

Li,

Lu,

Huang

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

Automated Construction of Mesoscopic Railway Infrastructure Models Supporting Station Throat Capacity Assessment

Abstract: Date of publication xxxx 00, 0000, date of current version xxxx 00, 0000.

Cited by 1 publication

References 28 publications

Railway track settlement patterns and control measures for multi-tunnel construction underneath a station track group: a case study

Railway track settlement patterns and control measures for multi-tunnel construction underneath a station track group: a case study

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