Preliminary results of geotechnical and geophysical investigations on sites with liquefaction occurrences in the greater Petrinja area after the 2020 earthquake - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Preliminary results of geotechnical and geophysical investigations on sites with liquefaction occurrences in the greater Petrinja area after the 2020 earthquake

Anh-Tuan Luong
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Branko Kordić
Miguel Benz Navarette
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Résumé

The occurrence of extensive liquefaction during the 2020 Petrinja earthquake in the epicentral area raises many questions, notably the geometries of sedimentary bodies in depth. In the fluvial plains of the Kupa, Glina and Sava rivers, many lines of sand ejecta and cracks at the surface are subparallel to the riverbanks in convex meanders and would reveal buried sand point bars below a thick layer of silts. In order to highlight the different structures and estimate their mechanical properties, geotechnical and geophysical investigations were carried out at different sites along the Kupa river in the Petrinja epicentral area. This work presents the approach adopted for both the site selection and the study methods. Then, we show some preliminary results as well as the perspectives of further studies on liquefied layers.
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hal-04414299 , version 1 (24-01-2024)

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  • HAL Id : hal-04414299 , version 1

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Denis Moiriat, Josipa Maslac, Anh-Tuan Luong, Kim Josephine Louis, Branko Kordić, et al.. Preliminary results of geotechnical and geophysical investigations on sites with liquefaction occurrences in the greater Petrinja area after the 2020 earthquake. 9th Conference of Croatian Geotechnical Society with international participation and under the auspices of ISSMGE, May 2023, Zagreb, Croatia. pp.121-132. ⟨hal-04414299⟩
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