Results 21 to 30 of about 1,493 (263)

Dynamic response analysis of the process of the utility shield tunnel under-passing the operating subway tunnel

open access: yesElectronic Journal of Structural Engineering, 2023
In order to analyze the interaction between the operating subway tunnel and the utility tunnel under construction during the utility tunnel under-passing the subway tunnel, an operating tunnel-stratum-utility shield tunnel coupled dynamic calculation ...
Jing Sun   +3 more
doaj   +1 more source

Deformation analysis and safety assessment of existing metro tunnels affected by excavation of a foundation pit

open access: yesUnderground Space, 2021
The excavation of a foundation pit considerably affects the adjacent structures and underground pipelines owing to the change in the stress state of the surrounding soil, resulting in deformation.
Shuaihua Ye, Zhuangfu Zhao, Denqun Wang
doaj   +1 more source

Influence of tunnel environment on internal acoustic comfort of the subway car

open access: yes机车电传动, 2022
Operating environment plays an important role to the noise inside the subway car. Tunnel environment leads to the increase of noise of the subway car and the rapid decrease of sound comfort, which seriously affects the passengers' physical and mental ...
XIE Jiankun, CHEN Xiaowei, WEI Haiju
doaj  

Influence of Lower Double-Track Tunnel Spacing on the Stress and Deformation Characteristics of Upper Tunnel in Double-Level Condominium Tunnels

open access: yesGeofluids, 2022
The open-cut tunnels in Aixi Lake, Nanchang, are constructed in a condominium form of highway tunnel and subway tunnel, which are the first superimposed double-level tunnels in China.
Huang Zhanjun   +5 more
doaj   +1 more source

Influence of tunnel slope on movement characteristics of thermal smoke in a moving subway train fire

open access: yesCase Studies in Thermal Engineering, 2021
In this study, the three-dimensional unsteady Navier-Stokes equation and fully buoyant corrected Renormalization-group (RNG) k-ε turbulence model were employed to investigate the influence of tunnel slopes on the temperature distribution characteristics ...
Dan Zhou   +4 more
doaj   +1 more source

Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation

open access: yesAdvances in Materials Science and Engineering, 2021
The excavation of foundation pits is one of the most important factors causing changes to the initial stress state of its surrounding soil, thus affecting the safety of nearby existing subway tunnels.
Xin Dong   +3 more
doaj   +1 more source

Effect of longitudinal joint on train-induced vibrations from subway shield-driven tunnels in a homogeneous half-space

open access: yesInternational Journal of Transportation Science and Technology, 2022
With the rapid increase of urban rail transit networks, the environmental problems induced by vibrations from subway traffic become more and more prominent.
Chao He   +3 more
doaj   +1 more source

Wireless Multimedia Sensor Network Based Subway Tunnel Crack Detection Method

open access: yesInternational Journal of Distributed Sensor Networks, 2015
Subway tunnel cracks directly reflect the structural integrity of a tunnel, and as such the detection of subway tunnel cracks is always an important task in tunnel structure monitoring.
Bo Shen   +3 more
doaj   +1 more source

Numerical Study on the Deformation of Tunnels by Excavation of Foundation Pit Adjacent to the Subway

open access: yesApplied Sciences, 2022
The excavation of the foundation pit will cause changes in the soil stress field around the foundation pit, and that may have adverse effects on the adjacent subway tunnels.
Xiang Zhao   +6 more
doaj   +1 more source

Response Monitoring and Analysis in Deep Foundation Pit Excavation: A Case Study in Soft Soil at Subway Tunnel Intersections

open access: yesBuildings, 2023
With the rapid development of urban rail transit and underground space development, the occurrence of excavation near existing tunnels is becoming more common.
Gang Chen   +7 more
doaj   +1 more source

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