Numerical Simulation Study on Technology of the Top-Down Bored Excavation with Cast-In Situ Arch

Abstract:

The top-down bored excavation with cast-in-situ arch method has many advantages, such as forming a complete and stable mechanical structure, reducing construction procedures and the frequency of structure transformation, improving the stability of structure during the construction and so on. According to the specific project of single span top-down bored excavation duct in Changchun Liberation Road station, numerical simulation method is used and finite difference software FLAC 3D is adopted in this paper to analyze and research the applicability of the top-down bored excavation with cast-in-situ arch method to this project. Then optimization analysis for excavation sequence of pilot tunnel is done and the optimum construction scheme is raised to guide the practical project. This research has certain practical significance and also provides references for similar projects.

• Periodical: Applied Mechanics and Materials (Volumes 744-746)
• Pages: 1027-1032
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.744-746.1027
• Online since: March 2015
• Authors: Zhong Ren Wang*
• Keywords: Buckle Arch, Flac 3D, Metro Duct, Underground Inverse Excavation

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