Abstract
In this paper, the construction and performance of a deep metro station excavation is presented. Top-down construction method has to be used in this deep excavation as it is located under the high speed railway, and the potential deformations of both structures and railway subgrade are extremely large. In order to reduce the deformations and ensure safety during the construction, several design and construction measures were taken including the thickening diaphragm walls, two additional temporary concrete struts, large area of soil improvement, and dense drilled piles. Additionally, a novel excavation method is used to improve construction efficiency. Field performance data were collected (i.e., lateral wall deflections, vertical displacements of diaphragm wall, middle slabs and railway subgrade, and support system loads). Results are comprehensively analyzed and show that the deformations of structures and railway subgrade are controlled within limited range.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.