Analysis of hoop stress variation of shield tunnel based on Hurst index

DOI

10.2991/ic3me-15.2015.169How to use a DOI?

Keywords

Fractal Theory; R/S analysis; V/S analysis; Hurst index; Time series

Abstract

Considering the nonlinearity and uncertainty of first tunnel hoop stress changes that caused by the construction of underwent tunnel in Suzhou metro line 4. According to the basic principles of fractal theory, Hurst index of the hoop stress time series was calculated by using R/S and V/S analysis method. The effectiveness of both method and non-cycle of surface deformation are analyzed combined with V statistic. The results show that both R/S and V/S analysis method for the analysis of time series of hoop stress has good validity. The Hurst index gets from R/S analysis method is bigger than that of V/S analysis method. Hurst index of B section in hoop stress time series approaches to one, which suggest that change rule with a strong regularity. The time series of non-cycle of three monitoring points is about 37 days and the hoop stress will be in a stable state after 37 days.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Lianyuan Chang
AU  - Daiguo Liu
AU  - Xu Li
PY  - 2015/08
DA  - 2015/08
TI  - Analysis of hoop stress variation of shield tunnel based on Hurst index
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 882
EP  - 890
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.169
DO  - 10.2991/ic3me-15.2015.169
ID  - Chang2015/08
ER  -