Long-term behavior of the tunnel under the loads of consolidation and tunnel temperature

A. Afshani, W. Li, H. Akagi, O. Shigeaki

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Tunnel excavated in low-permeability soil may experience large deformation and increase in lining load if water drains into the tunnel. Long-term dissipation of tunnelinginduced excess pore pressure into the tunnel consolidates soil around tunnel with low permeability and imposes extra load on the lining. Meanwhile, seasonal temperature can also expand and shrink joint opening between rings and segments and alters the rate of water leakage into the tunnel. The lining deformation can increase under the incremental increase of consolidation load, but it might also show fluctuating pattern because of the seasonal temperature. In this study, combined effect of long-term consolidation load and seasonal temperature load on the joint opening are discussed. An empirical relationship between water discharge into the tunnel and the amount of joint opening is proposed using the field measurements data of an old tunnel. Then, the joint opening under the influence of both consolidation and temperature load are investigated using a soil-water coupled consolidation model and a thermal stress model. The numerical results show that by employment of these numerical models, the behavior of joints between rings can be simulates very close to those of measured ones.

本文言語English
ホスト出版物のタイトルTunnels and Underground Cities
ホスト出版物のサブタイトルEngineering and Innovation meet Archaeology, Architecture and Art- Proceedings of the WTC 2019 ITA-AITES World Tunnel Congress
編集者Giulia Viggiani, Tarcisio Celestino, Daniele Peila, Giulia Viggiani
出版社CRC Press/Balkema
ページ5254-5263
ページ数10
ISBN(印刷版)9781138388659
DOI
出版ステータスPublished - 2019 1月 1
イベントWorld Tunnel Congress, WTC 2019 and the 45th General Assembly of the International Tunnelling and Underground Space Association, ITA-AITES 2019 - Naples, Italy
継続期間: 2019 5月 32019 5月 9

出版物シリーズ

名前Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art- Proceedings of the WTC 2019 ITA-AITES World Tunnel Congress

Conference

ConferenceWorld Tunnel Congress, WTC 2019 and the 45th General Assembly of the International Tunnelling and Underground Space Association, ITA-AITES 2019
国/地域Italy
CityNaples
Period19/5/319/5/9

ASJC Scopus subject areas

  • 土木構造工学
  • 地盤工学および土木地質学
  • 建築および建設

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