Results 291 to 300 of about 57,058 (352)

Boosted bagging: A hybrid ensemble deep learning framework for point cloud semantic segmentation of shield tunnel leakage

Jundi Jiang, Yueqian Shen, Jinhu Wang, Yufu Zang, Weitong Wu, Jinguo Wang, Junxi Li, Vagner G. Ferreira   +7 more
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Introduction to Shield Tunnelling Technology

Renmin Zhujiang, 2003
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Flexural Behavior of Shield Tunnel Joints with Auto-Lock Connectors: A Theoretical and Numerical Investigation with Parametric Analysis

Lina Luo, Weidong Lin, Haibo Hu, Gang Lei, Hui Liu   +4 more
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Effects of Undercrossing Tunneling on Existing Shield Tunnels

International Journal of Geomechanics, 2021
Abstract The lining rings of a shield tunnel are connected by steel bolts, which play an important role in longitudinal structural deformation during long-term operation.
Bo Liu, Zhiwei Yu, Ronghui Zhang, Yanhui Han, Zhiliu Wang, Shijie Wang   +5 more
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Analysis of shield tunnel

International Journal for Numerical and Analytical Methods in Geomechanics, 2003
AbstractThis paper proposes a two‐dimensional finite element model for the analysis of shield tunnels by taking into account the construction process which is divided into four stages. The soil is assumed to behave as an elasto‐plastic medium whereas the shield is simulated by beam–joint discontinuous model in which curved beam elements and joint ...
Zhu, HH, Ding, WQ, Hashimoto, T, Lee, CF, Yue, ZQ, Tham, LG   +5 more
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Rotor of a tunneling shield

Vestnik Mashinostroeniya, 2022
A variant of improving the design of the tunneling shield rotor as the main element of the working body is proposed. Structural modeling and calculations of the arising stresses and displacements, as well as the determination of the margin of safety on strength of the rotor are performed in the T-FLEX CAD program.
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Predictive maintenance of shield tunnels

Tunnelling and Underground Space Technology, 2013
Abstract Scientific maintenance methodologies are specially needed to enhance system reliability and safety, reduce maintenance manpower, spares, and repair costs, eliminate scheduled inspections, and maximize lead time for maintenance and parts procurement.
Yong Yuan, Xiaomo Jiang, Xian Liu
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Shield Tunnel Construction in Centrifuge

Journal of Geotechnical and Geoenvironmental Engineering, 1999
A large number of centrifuge model tests for simulating the shield construction process in dry sand was carried out by using a newly developed 100 mm diameter miniature shield tunnel. Different construction processes were modeled by three series of tests. A buried tube test was conducted to measure the lining stress under a centrifugal acceleration, a “
Toshi Nomoto, Shinichiro Imamura, Toshiyuki Hagiwara, Osamu Kusakabe, Nariaki Fujii   +4 more
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Effects of above-crossing tunnelling on the existing shield tunnels

Tunnelling and Underground Space Technology, 2016
Abstract Tunnelling in the dense urban areas frequently results in over-crossing or bypassing the existing tunnels. It is obvious that the over-crossing tunnelling will adversely affect and even damage the existing tunnels if the induced deformation exceeds the capacity of tunnel structures. Increasing concerns have been raised about the interactions
Rongzhu Liang, Tangdai Xia, Yi Hong, Feng Yu   +3 more
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