Serviceability assessment of subway induced vibration of a frame structure using FEM

Yuhong Ling, Jingxin Gu, T.Y. Yang, Rui Liu and Yeming Huang

Abstract

It is necessary to predict subway induced vibration if a new subway is to be built. To obtain the vibration response reliably, a three-dimensional (3D) FEM model, consisting of the tunnel, the soil, the subway load and the building above, is established in MIDAS GTS NX. For this study, it is a six-story frame structure built above line 3 of Guangzhou metro. The entire modeling process is described in detail, including the simplification of the carriage load and the determination of model parameters. Vibration measurements have been performed on the site of the building and the model is verified with the collected data. The predicted and measured vibration response are used together to assess vibration level due to the subway traffic in the building. The No.1 building can meet work and residence comfort requirement. This study demonstrates the applicability of the numerical train-tunnel-soil-structure model for the serviceability assessment of subway induced vibration and aims to provide practical references for engineering applications.

Key Words

frame structure; subway induced vibration; train-tunnel-soil-structure model; measurement; model parameters; serviceability assessment; one-third octave

Address

Yuhong Ling, Jingxin Gu: Department of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China T.Y. Yang: Department of Civil Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada Rui Liu: Architectural Design and Research Institute of SCUT, Guangzhou 510640, China Yuhong Ling, Rui Liu: State Key Laboratory of Subtropical Building Science, Guangzhou 510640, China Yeming Huang: Shum Yip Land Company Limited, Shenzhen 518040, China

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