Dear clients,

First of all, for this new year 2016, Itasca is wishing you happiness, prosperity and continued success in your business.
We hope you will continue to enjoy with our software and to collaborate with our company. We will still continue to do our best to satisfy our customers and software users.
The end of 2015 was filled with news and events, and we invite you to read carefully the Software and Conferences sections.

The European Itasca team

Consulting

Itasca Spain has developed a three-dimensional study of the stabilization and foundation of a pile for a cable bridge. This pile is located in a very sharp slope, with a wide level of colluvial deposits with low strength in the surface. The solution analyzed was based in the construction of an 8 m diameter concrete caisson, anchored to the ground. Different configurations of tensioned anchors were checked in order to select the optimized one. The analyses were made both in terms of factor of safety of the slope and the deformations and forces in the caisson and the anchors. Due to the dimensions of the caisson, it was modelled using volumetric elements, reproducing its real shape. FISH routines were developed to integrate stresses and obtained axial and shear forces and bending moments, all along the pile. These results were used to determine the steel reinforcement needed for the caisson.

Figure 1: Geometry of the caisson
Figure 2. Factor of safety	Figure 3. Axial forces in the caisson

Software

Training & Seminars

Conferences

Itasca and/or representative will be attending the following conferences:

Recent Publications

J. J. Oetomo, E. Vincens, F. Dedecker, J-C. Morel (2016) - "Modeling the 2D behavior of drystone retaining walls by a fully discrete element method", in Int. Journal for Numerical and Analytical Methods in Geomechanics, to publish

Sjöberg, J., A. Bolin, A. Sánchez Juncal, T. Wettainen, D. Mas Ivars and F. Perman (2015) – "Input to ore pass design – a numerical modelling study", in Proceedings of International Seminar on Design Methods in Underground Mining, Potvin, Y,. (eds.), pp. 571–584. Perth: Australian Centre for Geomechanics (17–19 Nov, 2015, Perth, Australia)

Tran M. H., Sulem J., Subrin D. and Billaux D. (2015) - "Anisotropic Time-Dependent Modeling of Tunnel Excavation in Squeezing Ground", in Rock Mechanics and Rock Engineering, DOI: 10.1007/s00603-015-0717-y

Ghazal R., Mas Ivars D., Johansson F. and Batres-Estrada R. (2015) - "Back analysis of in situ stress at shallow depth using discontinuum numerical modeling - a case study at the Odenplan station in Stockholm". Proceedings of Eurock 2015, Salzburg, Austria (October 2015)

Vatcher, J., S. D. McKinnon and J. Sjöberg (2015) – "Developing 3-D mine-scale geomechanical models in complex geological environments, as applied to the Kiirunavaara Mine", in Engineering Geology (in press, http://dx.doi.org/10.1016/j.enggeo.2015.07.020)

Moreno J., Senis M. and Olalla C. (2015) "Aspectos necesarios a introducir en la modelización numérica 3D de las presas de escollera con pantalla de hormigón para reproducir correctamente las tensiones en el elemento de impermeabilización ", In X Jornadas Españolas de Presas, Spancold, Sevilla (18-20 February 2015)

Graf F., te Kamp L., Auer M., Acharya M. and W. Wu (2015) – “Soil aggregate stability in eco-engineering: comparison of field and laboratory data with an outlook on a new modelling approach”, in Recent Advances in Modeling Land-slides and Debris Flows. Springer Series Geomechanics and Geoengineering, pp. 29-47.

Wu W., Switala BM., Acharya M., Tamagnini R., Auer M., Graf F., te Kamp L. and W. Xiang (2015) – “Effect of vegetation on stability of soil slopes: numerical aspects”, in Recent Advances in Modeling Landslides and Debris Flows. Springer Series Geomechanics and Geoengineering, pp. 163-177.