Numerical investigation of segmental tunnel linings-comparison between the hyperstatic reaction method and a 3D numerical model

Ngoc Anh Do, Daniel Dias and Pierpaolo Oreste

Abstract

This paper has the aim of estimating the applicability of a numerical approach to the Hyperstatic Reaction Method (HRM) for the analysis of segmental tunnel linings. For this purpose, a simplified three-dimensional (3D) numerical model, using the FLAC3D finite difference software, has been developed, which allows analysing in a rigorous way the effect of the lining segmentation on the overall behaviour of the lining. Comparisons between the results obtained with the HRM and those determined by means of the simplified 3D numerical model show that the proposed HRM method can be used to investigate the behaviour of a segmental tunnel lining.

Key Words

hyperstatic reaction method; lining response; numerical method; segmental tunnel lining; three-dimensional model

Address

Ngoc Anh Do: Department of Underground and Mining Construction, Hanoi University of Mining and Geology, Faculty of Civil Engineering, Hanoi, Vietnam Daniel Dias: 1) School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, China 2)University of Grenoble Alpes, CNRS, Grenoble INP, 3SR, F-38000 Grenoble, France Pierpaolo Oreste: Department of LEGE, Politecnico of Torino, Torino, Italy

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