PSI - Issue 62

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Diana Salciarini et al. / Procedia Structural Integrity 62 (2024) 514–521 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 12. Deformed view of the soil-foundation-structure system.

5. Conclusions Landslides represent a growing global threat with significant impacts on critical infrastructure such as bridges and viaducts. The analysis of real-world case studies has allowed the identification of recurring patterns in the interactions between landslides and infrastructure, contributing to improving understanding on the dynamics involved. Building upon these analyses, a three dimensional model was developed to simulate the effects of landslides on a viaduct situated on a moderately inclined slope, examined under both static and dynamic conditions. The results underscored the effectiveness of deep foundations in counterbalancing the landslide actions under static conditions. It also shows how the presence of a seismic motion can modify the triggering condition and the acceleration of the landslide, causing additional displacements and forces acting on the bridge piers. In conclusion, this study reveals the importance of analysing the complex interaction between landslides and viaduct foundations under seismic conditions, highlighting the need for a better understanding of the different behaviour of the system, which is of pivotal importance in implementing preventive measures and engineering considerations aimed at enhancing infrastructure resilience to hydrogeological risks. Acknowledgement This study was supported by FABRE – “Research consortium for the evaluation and monitoring of bridges, viaducts and other structures” ( www.consorziofabre.it/en) within various research programs. Any opinion expressed in the paper does not necessarily reflect the view of the funder. References Breccolotti M.; Materazzi A.L., Salciarini D., Tamagnini C., Ubertini F. (2011). Vibrations induced by the new underground railway line in Palermo, Italy Experimental measurements and FE modelling. Proc. of the 8th Int. Conf. on Structural Dynamics, EURODYN 2011, Leuven, 4-6 July 2011, p. 719-726. Brinkgreve, R. B. J., Kumarswamy, S., Swolfs, W.M., Waterman, D., Chesaru, A., & Bonnier, P. G. (2016). PLAXIS 2016. PLAXIS bv, the Netherlands. Cernuto, E., Settembre, S., Lupattelli, A., Cattoni, E., Volpe, E., Salciarini, D. (2023). Environmentally Sustainable Solutions for Slope Consolidation in the Deruta Historic Center. In: Springer Series in Geomechanics and Geoengineering, p. 777 – 784. Cruden, D. M., Martin, C. D., Thomson, S., & Miller, B. G. N. (2012). A moderate velocity landslide with immoderate consequences. Landslides and Engineered Slopes: Protecting Society through Improved Understanding, (ed.) E. Eberhardt, C. Froese, AK Turner, and S. Leroueil, p. 355-360. Farneti, E., Cavalagli, N., Costantini, M., Trillo, F., Minati, F., Venanzi, I., Ubertini, F. (2022). A method for structural monitoring of multispan bridges using satellite InSAR data with uncertainty quantification and its pre-collapse application to the Albiano-Magra Bridge in Italy. Structural Health Monitoring. Gabrieli, F., Gibin, F., Brezzi, L., Cernuto, E., Lupatelli, A., Salciarini, D., Mammoliti, E., Dezi, F., Stacul, S., Squeglia, N., Doglioni, A., Simeone, V., Simonini, P. (2024). Lessons from international case studies on bridge-slide interaction problems. Proc. of: II Fabre Conference – Existing bridges, viaducts and tunnels: research, innovation and applications (FABRE24), Genova, 16-18.02.2024. Iervolino, I., Galasso, C., Cosenza, E. (2009). Rexel: Computer Aided Record Selection for Code-based Seismic Structural Analysis. Bulletin of Earthquake Engineering, 8, 339-362. Kita, A., Lupattelli, A., Venanzi, I., Salciarini, D., Ubertini, F. (2021). The role of seismic hazard modeling on the simplified structural assessment of an existing concrete gravity dam. Structures, 34, 4560-4573. Lu, Y. E., & Zhang, L. M. (2012). Analysis of failure of a bridge foundation under rock impact. Acta Geotechnica, 7, 57-68. Lupattelli, A., Kita, A., Salciarini, D., Venanzi, I., Ubertini, F. (2023). Effects of the soil – structure interaction and seismic vertical component on the response of a concrete surge tank, Structures, 55: 310 – 323. Pauselli, D., Salciarini, D., Ubertini, F. (2022). Three-Dimensional Modeling of Soil-Structure Interaction for a Bridge Founded on Caissons under Seismic Conditions. Applied Sciences, 12, 10904. Ponziani, F., Berni, N., Stelluti, M., Zauri, R., Pandolfo, C., Brocca, L., Moramarco, T., Salciarini, D., Tamagnini, C. (2011). Landwarn: An operative early warning system for landslides forecasting based on rainfall thresholds and soil moisture. In: Landslide Science and Practice: Early Warning, Instrumentation and Monitoring, vol. 2, p. 627 – 634, Proc. Of: 2nd World Landslide Forum, 3-9 October 2011.