Results 21 to 30 of about 328,347 (250)

Typical Underwater Tunnels in the Mainland of China and Related Tunneling Technologies

open access: yesEngineering, 2017
In the past decades, many underwater tunnels have been constructed in the mainland of China, and great progress has been made in related tunneling technologies. This paper presents the history and state of the art of underwater tunnels in the mainland of
Kairong Hong
doaj   +1 more source

Numerical Investigation on Crack Propagation and Fatigue Life Estimation of Shield Lining under Train Vibration Load

open access: yesShock and Vibration, 2021
Dynamic loads such as the train vibration load usually act on the shield tunnel lining in the long term, which could make the initial flaws in shield segment propagate and gradually weaken the robustness of the tunnel structure.
Long-gang Tian   +2 more
doaj   +1 more source

Low-volume-loss tunnelling for London ring main extension [PDF]

open access: yes, 2010
The Thames Water ring main extension is a 4.5 km long tunnel from Stoke Newington, in the London borough of Hackney, to New River Head in Finsbury, in the London borough of Islington. The 2.85 m i.d.
B. D. Jones, Jones, Benoît
core   +1 more source

Analytical solution of additional response of shield tunnel under asymmetric jack thrust

open access: yesRock and Soil Mechanics, 2021
When shield is driving along a curve alignment or during deviation correction, the asymmetrical thrust will generate an additional bending moment at the head of the tunnel, which will cause construction problems such as longitudinal deformation of the ...
WANG Zu-xian   +2 more
doaj   +1 more source

ANSYS Simulation Analysis of Stray Currents on Subway Shield Tunnel [PDF]

open access: yes, 2014
In order to analyze the distribution rule and influence range of subway shield tunnel in different traction currents, a three-dimensional geometrical model and mathematical model of subway shield tunnel stray current field were built, and a finite ...
Wang, Guo, Pei, Xiaoxiang
core   +2 more sources

Seismic Resilience Evolution of Shield Tunnel with Structure Degradation

open access: yes, 2023
The structural performance of shield tunnel structures is highly susceptible to degradation under complex environmental loads, with the most common manifestation being bolt preload loss.
Hongzhi Cui   +7 more
core   +1 more source

Centrifugal model tests on excavation of twin parallel tunnels

open access: yesYantu gongcheng xuebao, 2017
The excavation construction of twin parallel tunnels is simulated by using centrifugal model tests. The internal stress and deformation variation of shield structure of the existing tunnel and the ground surface settlement are studied owing to excavation
MIAO Lin-chang 1, WANG Fei 1, Charles W. W. Ng 2, LÜ Hu 2
doaj   +1 more source

Impact of pit supporting SMW pile construction on underneath shield tunnel deformation

open access: yesYantu gongcheng xuebao, 2019
Taking the project of Xinggangjie tunnel up-crossing No. 1 subway shield tunnel in Suzhou as the research object, the deformation data of underneath shield tunnel during SMW pile construction are analyzed, and the deformation rules during SMW pile ...
WANG Zhan-sheng 1, PAN Huang-song 2, ZHUANG Qun-hu 1, LIU Jian-guo 1, CHEN Xiu-ming 1, TONG Li-yuan 2
doaj   +1 more source

Study on Stress Characteristics Response of Submarine Shield Segment Under Ultra-high Water Pressure

open access: yesElectronic Journal of Structural Engineering
In the construction and operation stage of shield tunnel, mastering and clarifying the mechanical characteristics of the overall structure is essential for ensuring shield tunnel safety.
Bing Li   +4 more
doaj   +3 more sources

Failure Mode and Stability of Excavation Face on Shield Tunnel Undercrossing Existing Tunnel [PDF]

open access: yes, 2019
The supporting pressure value of excavation face directly determines the stable state of excavation face, and its value will directly lead to instability of excavation face if the value is too small.
Xue, Fei, Zhang, Mengxi
core   +1 more source

Home - About - Disclaimer - Privacy