Monitoring the Behaviour of an Existing Royal Mail Tunnel: London Underground Bond Street Station Upgrade Works

Gue, Chang Ye; Wilcock, M; Alhaddad, MM; Elshafie, Mohammed; Soga, Kenichi; Mair, RJ

doi:10.1061/9780784480441.055

Cited by 8 publications

(3 citation statements)

References 3 publications

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Section: Overview Of New Station Projectmentioning

confidence: 99%

“…Through a variety of advanced monitoring instruments, including distributed optical fiber strain sensing (DFOS), photogrammetry, and strain gauge instrumented tunnel bolts, Gue, C.Y., etc. [30], studied the mechanical and deformation behavior of the existing royal post tunnel during the new passenger tunnel construction, and guided the design and construction of the tunnel according to data feedback. Researchers mostly focus on the study of construction deformation, under a new subway crossing an existing line, while research on the construction risk of crossing existing lines, above, is relatively small, especially for subway extension projects involving large spaces and large sections.…”

Section: Introductionmentioning

confidence: 99%

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Risk Analysis and Control Factors Based on Excavation of a Large Underground Subway Station under Construction

Zhang

Huang

2020

Symmetry

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Considering the convenience of pedestrian transfer, reasonable structural stress and beautiful shape design, most subway stations adopt symmetrical design. At present, the new subway station is developing in the direction of a multidimensional space, as well as a large scale, and complex structure. Tunnel construction also presents unpredictability, coupling amplification and high risks. For example, a subway extension project involves construction, which would affect the normal use of the subway or damage its structure. Based on excavation of the largest underground subway station under construction in China, the Erligou station extension project (line 16 of Beijing Metro), and using theoretical analysis, numerical simulation, monitoring data, and other research methods, this paper quantitatively analyzes the risk of a large space station’s construction process on the adjacent existing station structure and track, as well as highlights key, high-risk sub-projects, or construction steps, combined with specific engineering measures to ensure safety during construction of a new station. The general rules concerning large space subway station construction are further summarized to provide reference for similar projects.

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Section: Overview Of New Station Projectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Risk Analysis and Control Factors Based on Excavation of a Large Underground Subway Station under Construction

Zhang

Huang

2020

Symmetry

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“…Currently, there are mainly studies on the impact of shield tunneling on existing tunnels based on various methods, such as the empirical formula method [26,27], theoretical research method [28][29][30], simulation experiment method [31,32], field measurement method [12,33,34], and numerical simulation method [35][36][37]. Li [38] regarded an existing subway tunnel as an Euler-Bernoulli beam model placed on a Riftin foundation model.…”

Section: Introductionmentioning

confidence: 99%

Multiple Disturbances of Existing Tunnels Caused by Deep Excavation and New Shield Tunnel

Li,

Ye,

et al. 2023

Advances in Civil Engineering

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With the continuous development of urban underground spaces, new underground engineering approaches are becoming more similar to existing operating tunnels. Existing research is typically concerned with the impact of a single project, such as a new tunnel or deep excavation, on existing shield tunnels. There are few studies on the influence of both excavation and overcrossing tunneling on operational tunnels. Taking a section ranging from the Chengzhan Station to the Jiangcheng Road Station of Hangzhou Metro Line 7 as a case study, this study analyzes the automatic monitoring data of the existing tunnel within this section. Through data analysis, the influences of deep excavation and shield tunneling on the vertical settlement, horizontal displacement, segment convergence, and differential settlement of the tunnel ballast of the adjacent existing line segment are assessed. The influence of deep excavation and overcrossing tunneling on multiple disturbances of existing line tunnels is summarized. This study will be useful for similar projects involving deep excavation next to existing tunnels and overcrossing tunneling, as it will help clarify the protection range of existing lines and determine the displacement alarm value of existing structures.

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Responses of in-service shield tunnel to overcrossing tunnelling in soft ground

et al. 2021

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Monitoring the Behaviour of an Existing Royal Mail Tunnel: London Underground Bond Street Station Upgrade Works

Cited by 8 publications

References 3 publications

Risk Analysis and Control Factors Based on Excavation of a Large Underground Subway Station under Construction

Risk Analysis and Control Factors Based on Excavation of a Large Underground Subway Station under Construction

Multiple Disturbances of Existing Tunnels Caused by Deep Excavation and New Shield Tunnel

Responses of in-service shield tunnel to overcrossing tunnelling in soft ground

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