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Long-Term Settlement of Subway Tunnel and Prediction of Settlement Trough in Coastal City Shanghai

Conference paper

Abstract

Subway tunnels have shown characteristics of severe longitudinal differential settlement since the operation of subways in Shanghai. The differential settlement has an important impact on the internal force of tunnel structure and the waterproofing of joints. According to the in-site measuring data of Subway Line 1, subway tunnel in the soft area is easily prone to developing many settlement troughs with different sizes. The differential settlement in the settlement trough is noticeable, which has a seriously effect on the safety of tunnel structure and subway operation. The differential settlement in the settlement trough relates to the subway vibration load, the engineering activities, the regional land subsidence and the seasonal rain. From the point of view of time and space, the curve fitting and Auto Regressive Integrated Moving Average ARIMA (p, d, q) were combined to predict the long-term settlement in the settlement trough. The Hengshan Road Station and the South Huangpi Road Station were taken as case studies. The results show that the predicted values agree well with the measured data from the perspective of time and space, which provides a new idea for the long-term settlement of subway tunnel.

Keywords

Subway tunnel Long-term settlement ARIMA (p, d, q) model 

Notes

Acknowledgements

This work presented in this paper was by National key research and development program (2017YFC1500702) and the research grant (16FTUE03) from Fujian Research Center for Tunneling and Urban Underground Space Engineering (Huaqiao University).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil EngineeringChina University of Mining and TechnologyXuzhouPeople’s Republic of China
  2. 2.Fujian Research Center for Tunneling and Urban Underground Space EngineeringHuaqiao UniversityXiamenPeople’s Republic of China

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