Results 61 to 70 of about 6,084 (206)
Automatic segment erection system for shield tunnels
Advanced Robotics, 1990 Shield tunnelling is now the practice most frequently used in the tunnelling of urban areas. This paper discusses an automatic segment erection system developed for the unmanned implementation of the shield method. The system is composed of a segment erection robot and an automatic segment feeder; the former assembles segments which prevent the ...
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DEM Investigations on the Mechanism of Earth Pressure Balanced Shielding Through Nonuniform Soils
Advances in Civil EngineeringThe increasing scarcity of urban spatial resources has led to the growing development of urban subways. The earth pressure balanced (EPB) shield machine has become one of the main tunnel boring machines in metro tunnel construction due to its economic ...
Yongjuan Zhang +7 more
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Convergence Deformation of Existing Shield Tunnel Induced by Adjacent Shield Tunnelling Construction
AbstractThe subway system has benefited the transportation in a lot of modern cities with advantages such as convenience, rapidity, large volume, etc. However, with the construction of more and more subway systems, the underground space is increasingly crowded.
Y. J. Song +5 more
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Seismic Response of Shield Tunnel with Double-Layer Lining [PDF]
A shield tunnel is an assembly structure composed of connecting bolts and segments, generally considered to have good seismic performance. However, there is still a possibility of damage occurring in shield tunnels under strong seismic action. Therefore,
Qipeng Cai, Xiangyu Guo
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BuildingsThe pressure distribution and the force on tunnel segments of synchronous grouting in the shield tail gap channel of shield tunnels are key to controlling the stability and surface settlement of the strata surrounding such tunnels.
Yang Cheng, Xiangyang Liu
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Analysis of Face Stability during Excavation of Double-O-Tube Shield Tunnel [PDF]
, 2013 This paper focuses on the face stability analysis of Double-O-Tube shield tunnel. This kind of analysis is significant to ensure the safety of workers and reduce the influence on the surrounding environment.
Qinghong Zhou +4 more
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Chengshi guidao jiaotong yanjiuObjectiveThe civil works of section SG1 of Jiaxing-Fengnan Suburban Railway are located within water-rich soft soil strata，where shield tunnel construction faces numerous challenges.
Yali LIU, Weijie JIANG, Baoliang WANG
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Effects of Water Inrush from Tunnel Excavation Face on the Deformation and Mechanical Performance of Shield Tunnel Segment Joints [PDF]
, 2017 Water inrush from the excavation face often occurs in the current shield construction of metro tunnels. In this study, the discontinuity of shield tunnel lining and the interaction between the tunnel segments, the grouting layer, and the surrounding rock
Zhi Ye, Tingsheng Zhao, Wen Liu
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Chengshi guidao jiaotong yanjiu［Objective］ In water-rich soft soil areas, it is difficult to control the deformation of the existing operating metro tunnel structure caused by the construction of the shield tunneling closely under-passing.
MA Xifeng +5 more
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Effect of longitudinal joints on seismic response of the large shield tunnel in liquefiable soils [PDF]
, 2015 In view of the damages to shield tunnels in recent strong earthquakes, this paper focuses on the effect of longitudinal joints on the seismic response of the shield tunnel in liquefiable soils.
Wei-Zhong Chen +2 more
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