o:4160 Dynamic response of existing embankment dams in specific geotechnical and seismological conditions: contemporary framework for Serbian national guidelines en We suggest a new approach for evaluating the dynamic response of existing embankment dams as a guideline for national engineering regulations in Serbia. This novel concept is applied to the case study of the existing embankment dam “Zavoj” (Serbia), built at the place of the previously formed natural dam (due to large landslide activity), and exposed to Mw7.4 Vrančea earthquake and under double impact of Kresna earthquake (Mw6.8 and Mw7.1). Results of transient FEM and direct dynamical analysis of the three-dimensional FEM model of the “Zavoj” dam indicate that the existing dam is stable in dynamic conditions, while the surrounding terrain is either on the verge of stability or becomes unstable, depending on the assumed geotechnical conditions and a relevant earthquake analyzed. As a result, we construct a landslide hazard map in dynamic conditions and the dam damage map, which enables the identification of unstable, damaged, or weak parts of the dam, its immediate surroundings, and the accumulation zone in general. The results indicate that direct dynamical analysis is obligatory when two succeeding earthquakes occur and temporal evolution of displacements in the model is required. Additionally, the application of the remaining bearing capacity criterion indicates a much larger zone of potential instability compared to the extent of equivalent plastic strain and the location of the old sliding surface. By following the proposed guidelines, one secures the inclusion of all the relevant influential factors in the comprehensive dynamic analysis of existing embankment dams, leading eventually to reliable decisions on further design, (re)construction, and/or monitoring activities. embankment dam, landslide, earthquake, 3D dynamic analysis, remaining bearing capacity 1552099 10.3389/feart.2024.1358928 2024-03-14T10:33:12.390Z 44 yes 46 Srđan Kostić Institut za vodoprivredu "Jaroslav Černi"; Jaroslav Černi Water Institute 0000-0002-3705-3080 Nikola Milivojević Institut za vodoprivredu "Jaroslav Černi"; Jaroslav Černi Water Institute person 0000-0001-5330-1219 Slobodan Nedeljković Geofizički biro, Beograd, Belgrade, Serbia person Aleksandar Bodić University of Kragujevac, Faculty of Engineering, Kragujevac, Serbia person Dragan Rakić University of Kragujevac, Faculty of Engineering, Kragujevac, Serbia person application/pdf 1275827 https://unilib.phaidrabg.rs/o:4160 no yes 16 70 92000001 71A04 Frontiers in Earth Science 12 1 19 Frontiers Media SA, Lausanne, Switzerland 2024-02-21 Received 20 December 2023 Accepted 30 January 2024 Published 21 February 2024