当期期刊

Assessment for shallow and large tunnel construction in weak ground conditions: Application of tunnel boring machines

Servet Karahan, Candan Gokceoglu

发布时间:2024-04-17

关键词:face pressure, NATM, railway tunnel, TBM, weak ground

摘要:AbstractWith recent technological advancements, tunnel boring machines (TBM) have developed and exhibited high performance in large diameters and weak ground conditions. Tunnels are crucial structures that significantly influence the timelines of highway and railway projects. Therefore, the construction of tunnels with TBMs becomes a preferred option. In this study, a comparative analysis betwe...

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Deformation monitoring at shield tunnel joints: Laboratory test and discrete element simulation

Maoyi Mao, Xiaowei Yang, Chun Liu, Tao Zhao, Hui Liu

发布时间:2024-04-26

关键词:Deformation monitoring at shield tunnel joints Laboratory test and discrete element simulation

摘要:AbstractShield tunnel, composed of several segments, is widely used in urban underground engineering. When the tunnel is under load, relative displacement occurs between adjacent segments. In the past, distributed optical fiber sensing technology was used to perform strain monitoring, but there is an urgent need to determine how to transform strain into displacement. In this study, optical freq...

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Energy characteristics of saturated Jurassic sandstone in western China under different stress paths

Yi Yang, Jian Lin, Yun Wu, Shilong Peng, Wanhang Shao, Lining Yang

发布时间:2024-04-27

关键词:Energy characteristics of saturated Jurassic sandstone in western China under different stress paths

摘要:AbstractTo study the energy evolution and failure characteristics of saturated sandstone under unloading conditions, rock unloading tests under different stress paths were conducted. The energy evolution mechanism of the unloading failure of saturated sandstone was systematically explored from the perspectives of the stress path, the initial confining pressure, and the energy conversion rate. T...

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