Aleksandra Bogdanovic, Kemal Edip and Marta Stojmanovska
 Edip, K., Development of three phase model with finite and infinite elements for dynamic analysis of soil media, 2013, Ss. Cyril and Methodius: Institute of Earthquake Engineering and Engineering Seismology.
 Zienkiewicz, O. and P. Bettess, Infinite elements in the study of fluid-structure interaction ppoelems, in Computing Methods in Applied Sciences1976, Springer. p. 133-172.
 Häggblad, B. and G. Nordgren, Modelling nonlinear soil-structureinteraction using interface elements, elastic-plastic soil elements and absorbing
In most of the finite element (FE) simulations, carried out for certain classes of soil–structureinteraction problems, such as deep excavations, a computational strategy that assumes nonlinear soil and linear structure (NSO–LST) behaviour is usually adopted. Such an approach should lead to the conservative assessment of stress resultants in the structure, and a safer design in consequence, but it is rather difficult to say whether this hypothesis holds true in all cases. The main source of this uncertainty is because most of the structural
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Kolekova, Y. and Schmid, G. (2004). Remarks on dynamic soil-structureinteraction. Proceedings of the JDGK-Symposium o4, 2, 235-241.
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Raid Ramzi Al-Omari, Madhat Shakir Al-Soud and Osamah Ibrahim Al-Zuhairi
used to simulate the soilstructureinteraction at the tunnel-soil interface. An isotropic elastic model was used for the pile, piles cap, tunnel lining and tunnel boring machine shield (TBM). Zarev (2016) stated that the advanced models like HS and HS small model are required for obtaining a realistic prediction of the deformations during shield tunnelling. Table 2 summarizes the soil properties adopted from Miro et al., 2012 . According to Zarev (2016), the HS model allows for accounting the plastic collapse (isotropic hardening cap plasticity) as well as
] Horvath, J.S., Colasanti, R.J. (2011): Practical subgrade model for improved soil-structureinteraction analysis: model development. International Journal of Geomechanics, ASCE , 11(1), 59–64.
 Jagodnik, V., Jelenic, G., Arbanas, Z. (2013): On the application of a mixed finite-element approach to beam-soil interaction. Acta Geotechnica Slovenica , 10(2), 15–27.
 Mayne, P.W. (2005): Unexpected but foreseeable mat settlements on Piedmont residuum. International Journal of Geoengineering Case Histories , 1(1), 5–17.
 Móczár, B., Szendefy, J
Petronijevic, M., G. Schmid, Y. Kolekova: "Dynamic soilstructure interaction of frame structures with spectral elements - Part I", GNP2008, Žabljak 3-7 Mar, 2008
Penava, D., N. Bajrami, G. Schmid, M. Petronijevic, G. Aleksovski: "Dynamic soil-structureinteraction of frame structures with spectral elements - Part II", GNP2008, Žabljak 3-7 Mar., 2008
Dominguez, J. "Boundary elements in dynamics", Computational Mechanics Publications, Southampton, Boston, 1993
The paper refers to a structural finite element analysis on the reservoirs for sludge
fermentation subjected to static in-duty loads, at Glina Water Waste Treatment Plant. The purpose
was to assess the stress and deformation states in subsequent erection and service conditions, to
verify the design provisions and to emphasize the sensitivities, for a structure which was designed
in the ‘80s based on analytical procedures. The results obtained on the numerical models highlight
the importance of the soil-structure interaction, in peculiar the one influenced by the soil mass
deformability, on the overall structural response. Based on the calculated stresses, all structural
components were verified according to the actual design codes at the ultimate limit state and the
service limit state (water tightness/crack emergence).
NUMERICAL FEM ASSESSMENT OF THE DYNAMIC STRUCTURAL RESPONSE
The paper refers to a structural finite element analysis on the reservoirs for sludge fermentation at Glina Waste Water Treatment Plant. The purpose was to assess the dynamic response of the structure, the stress and deformation states due to the design earthquake. A linearelastic analysis was performed, according to the Romanian actual codes, in order to verify the design provisions and to emphasize the sensitivities, for a structure which was designed by analytical procedures. The results obtained on the numerical models highlight the importance of the soil-structure interaction, in peculiar the one influenced by the soil mass deformability, on the overall structural response. Based on the results of the analysis, an in-situ measurement campaign for structural dynamic characteristics was initiated, taking advantage of the ongoing repair works with subsequent exhaustion and re-filling of reservoir No. 4.
George Catană, Adrian-Alexandru Savu and Ionuț Ealangi
The article presents a case study on soil-structure interaction modelling for Wind turbines. After a brief presentation on the history of wind turbines and their potential in Romania, the authors take on the task of modelling the soil-structure interaction for the raft and piles. Three models are chosen: in the first model the piles are fixed at foundation depth; in the second, elastic supports are modelled on the raft and the piles and in the third model both elastic supports and fixed supports are modelled. Several comparisons are made between the three cases referring to displacements, efforts and necessary reinforcement. Based on these comparisons, the most important conclusion drawn is that the modelling of the soil-structure interaction has an important effect on the final reinforcement of the raft and the piles, considering that the difference between the models reaches almost 18%, which in the case of really large foundations can draw the line between economic and non-economic design.