Abstract
This paper focuses on the settlement analysis of immersed tunnel on soft ground. Even under careful design, immersed tunnel may have problems of excessive settlement and the resulting concrete cracking or structure leakage during operation period. Yongjiang Tunnel, the first immersed tunnel on soft ground in mainland China, is taken as a case study. The monitored settlement data after a 16-year service is first displayed and analyzed, then a 2D numerical model is built to simulate the ground settlement deformation from tunnel construction to long-term tunnel operation. The effects of back-silting on the stiffness of the foundation layer and further on the settlement is quantitatively analyzed, and the advices on settlement control for immersed tunnel on soft ground are provided.
| Original language | English |
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| Title of host publication | Tunnels and Underground Cities |
| Subtitle of host publication | Engineering and Innovation meet Archaeology, Architecture and Art- Proceedings of the WTC 2019 ITA-AITES World Tunnel Congress |
| Editors | Daniele Peila, Giulia Viggiani, Tarcisio Celestino |
| Publisher | CRC Press / Balkema - Taylor & Francis Group |
| Pages | 1234-1241 |
| Number of pages | 8 |
| ISBN (Print) | 9781138388659 |
| DOIs | |
| Publication status | Published - 2019 |
| Event | World Tunnel Congress, WTC 2019 and the 45th General Assembly of the International Tunnelling and Underground Space Association, ITA-AITES 2019 - Naples, Italy Duration: 3 May 2019 → 9 May 2019 |
Conference
| Conference | World Tunnel Congress, WTC 2019 and the 45th General Assembly of the International Tunnelling and Underground Space Association, ITA-AITES 2019 |
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| Country/Territory | Italy |
| City | Naples |
| Period | 3/05/19 → 9/05/19 |