3D Numerical Analysis of Metro Station by PBA Method to Enlarge Existing Large-Size Shield Tunnel

Abstract:

There is no engineering experience for metro station construction by the PBA (Pile-Beam-Arch) method to enlarge an existing large-size shield tunnel in China. During enlarging construction by the PBA method, the spatial mechanical and deformational characteristics of metro station structure are still not clear. In this paper, the Gaojiayuan station is taken as an engineering background to study the spatial mechanical and deformational characteristics during enlarging construction by the PBA method. Based on soil-structure interaction theory, a three-dimensional finite element model is built to simulate the enlarging construction by the PBA method. The three-dimensional numerical results can be regarded as a valuable reference for enlarging construction by the PBA method in Beijing metro line 14.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1673-1678
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1673
• Online since: May 2012
• Authors: Mei Yan, De Yun Ding, Xiu Ren Yang, Xiu Ren Yang, Wei Dong Lu, Wei Ning Liu, Ai Min Li
• Keywords: 3D Numerical Simulation, Enlarging Construction, Large-Size Shield Tunnel, Metro Station, PBA Method

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DOI: 10.18057/icass2018.p.035

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