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Influence of Adjacent Substructures on Deformation Behavior and Lateral Earth Pressure Development of Flexible Retaining Walls at Non-limit State

  • Olivier Demeijer
  • Ming-Guang Li
  • Jin-Jian Chen
  • Yong-Mao Hou
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)

Abstract

Rapid development of urban areas leads to a higher density of substructures. Because of the limited space in these areas, new excavations cannot be carried out with excavated slopes and vertical excavation solutions with retaining walls are needed. Much research has investigated the response of substructures adjacent to a deep excavation but there is a lack of research focusing on the impact of substructures on the deformation behavior of nearby retaining walls. In this study, the well-documented case-history of the Tapei National Enterprise Center (TNEC) excavation was used to create a numerical model using finite difference software. The Mohr-Coulomb soil model was used as constitutive model. After the verification with field data, three types of substructures where added 5 m behind the flexible retaining wall. The substructures are two piles; a wall and a three-layered substructure. The deformation of the retaining wall and developed non-limit lateral earth pressure was analyzed. Results showed that the confined soil width has a significant impact on both the deformation as well as on the earth pressure development for all models. Furthermore, it showed that the model with three-layered substructure had the most impact on the deformation and earth pressure, the model with piles in the backfill the least. This can be attributed to the stronger development of soil arching.

Keywords

Flexible retaining wall Adjacent substructures Lateral deformation Lateral earth pressure Non-limit state Soil arching 

Notes

Acknowledgements

The financial support from the National Natural Science Foundation of China (NSFC Grant No. 41602283), and Science and Technology Commission of Shanghai Municipality (Grant No. 16QB1403400) is gratefully acknowledged.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Olivier Demeijer
    • 1
  • Ming-Guang Li
    • 1
  • Jin-Jian Chen
    • 1
    • 2
  • Yong-Mao Hou
    • 3
  1. 1.Department of Civil EngineeringShanghai Jiao Tong UniversityShanghaiChina
  2. 2.State Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghaiChina
  3. 3.Shanghai Tunnel Engineering Co., Ltd.ShanghaiChina

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