Chapter
Mar 17, 2022
Devonshire Street Tunnel Underpinning—An Innovative Approach
Authors: Praveen Gadagi [email protected], Jonathon Turley [email protected], Weimin Deng, Ph.D. [email protected], and Tony Lavorato [email protected]Author Affiliations
Publication: Geo-Congress 2022
ABSTRACT
Sydney’s Central Station is the busiest railway station in Australia. The upgrade of the 115-year-old station to incorporate Sydney’s new metro lines involves the excavation and top-down construction of a 27-m-deep station box in the heart of the operating station. This paper describes the unique underpinning design for the existing pedestrianized Devonshire Street Tunnel (DST), which allowed it to remain open to customers throughout construction of the station box. This paper aims to present the structural and geotechnical design and staged construction methodology, describe the interface between geotechnical and structural works, and discuss risks and mitigation measures adopted during design development and construction.
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REFERENCES
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Information & Authors
Information
Published In
Geo-Congress 2022
Pages: 505 - 519
History
Published online: Mar 17, 2022
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Authors
Affiliations
CPEng
1Senior Civil Structural Engineer, GHD Pty. Ltd. Email: [email protected]
CPEng
2Lead Structural Engineer, Aurecon Australasia. Email: [email protected]
3Technical Director, Aurecon Australasia. Email: [email protected]
CPEng
4Design Director Structures, Aurecon Australasia. Email: [email protected]
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