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Dear clients, We would like to thank you for your business this year. It has been a pleasure helping you reach your goals, and we look forward to contributing to your success in 2020. We wish you a prosperous and happy new year!
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The construction of the tunnel Kennedy in Santiago de Chile. A major challenge of an urban tunnel in Soils - Itasca Consultores S.L. (Spain) Itasca Consultores S.L. has been collaborating with the engineering company responsible of the design (Subterra Ingeniería S.L., Madrid, Spain) in the numerical modeling aspects of the Kennedy tunnel design. It is an urban tunnel (1.2 km long) located in Santiago de Chile that was constructed between 2014 and 2017. |
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Fig. 1: 3D model for the 4 lanes section | Fig. 2. 3D model for the 5 lanes section |
The scope of the modelling included support analysis (with simulation of the sequential process of driving and support with setting of the shotcrete), face stability analysis (Figure 3), bearing stability analysis (Figure 4) and surface settlement analysis. |
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Fig 3 : Face stability analysis |
Fig 4 : Bearing stability analysis |
Shotcrete lining has been designed considering the effect of groundwater pressures (Figure 5) and the deformation of the seismic actions (according to the corresponding Chilean regulations for buried structures), Figure 6. |
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Fig 5. Effect of the groundwater rise | Fig 6. Effect of the seismic load |
It is important to note that an earthquake Mw= 8.4 took placed at Coquimbo region (close to Santiago region); after the inspection of the tunnel and analysis of the monitoring data, it could be concluded that this event did not affect the tunnel integrity. Related publication: Kuster, J. & Núñez, R. & Chávez, E. & Galera, J.M. & Santos, D.. (2019). The construction of the tunnel Lo Saldes in Santiago de Chile. A major challenge, a wide tunnel with an extremely low overburden. 10.1201/9780429424441-613. |
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Itasca will host introductory training courses in Europe:
Please visit https://www.itascainternational.com/learning/training for full details or contact directly the office responsible for the training. For users who envisage the need for substantial amounts of assistance, consulting support or customized training courses are available. |
Itasca and/or representatives will be attending the following conferences:
Conference |
Date |
Place |
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Itasca International Symposium | February 17-20, 2020 | Vienna, Austria |
Bergmekanikdagen | March 17, 2020 | Stockholm, Sweden |
Slope Stability 2020 | May 14-20, 2020 | Perth, Australia |
8th Clay Conference | June 8-11, 2020 | Nancy, France |
JNGG 2020 | June 30 - July 2, 2020 | Lyon, France |
16th IACMAG Torino 2020 | July 1-4, 2020 | Torino, Italy |
AFTES 2020 | September 21-23, 2020 | Paris, France |
Lavoine, E., Davy, P., Darcel, C., and Le Goc, R.: On the Density Variability of Poissonian Discrete Fracture Networks, with application to power-law fracture size distributions, Adv. Geosci., 49, 77–83, https://doi.org/10.5194/adgeo-49-77-2019, 2019.
Edelbro, C., R. Brummer, M. Pierce, D. Sandström & J. Sjöberg. (2019) "Raiseboring in difficult rock conditions", Ground Support 2019 (Sudbury, October 23–35, 2019). Paper available on-line
Perman, F., L. Jonsson, C. Andersson, M. Isaksson-Mettävainio, J. Sjöberg, U. Lindfors & M. Brantberger. (2019) "Bergmekaniska analyser för stationsutrymmen för ny tunnelbana Akalla-Barkarby", Bergmekanikdagen 2019 (Stockholm, March 19, 2019), Paper available on-line
Billaux, D., Ghazal, R., Soulat,P., Bonnet, S., Le Floch, M.: "Numerical modeling of Moreau dam stability in dynamic conditions", Colloque CFBR : « Justification des barrages : Etat de l’art et Perspectives», Chambéry, November 2019
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France
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