Hypoelastic-plastic-damage analysis of a tunnel in swelling rock mass

Xiaodong Liu, Shotaro Yamada, Takashi Kyoya

研究成果: Conference article査読

抄録

In this study, we proposed a multi-stage analysis process to simulate the mechanical behaviour of a tunnel constructed in swelling rock mass, which including self-weight analysis, excavation analysis and swelling analysis. Especially, in the swelling analysis, a hypoelastic-plastic-damage model was constructed which can express the stiffness deterioration due to the damage that occurs with the process of rock swelling, and the plastic softening and hardening behaviour based on the Modified Cam-Clay (MCC) model. Furthermore, an implicit stress-update algorithm was formulated for the swelling model to obtain an accurate and robust numerical computation. A series of numerical examples of a tunnel in swelling rocks is shown in this study to discuss the mechanical behaviour of the tunnel due to the swelling of the bedrock, aimed at evaluating the stability of a tunnel constructed in swelling rocks after some years.

本文言語English
論文番号032093
ジャーナルIOP Conference Series: Earth and Environmental Science
861
3
DOI
出版ステータスPublished - 2021 10 27
イベント11th Conference of Asian Rock Mechanics Society, ARMS 2021 - Beijing, China
継続期間: 2021 10 212021 10 25

ASJC Scopus subject areas

  • 環境科学(全般)
  • 地球惑星科学(全般)

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