Seismic assessment and FRCM strengthening of post-war masonry residential buildings : a case study on building typologies

Petrovčič, Simon (avtor), Prašnikar, Petra (avtor), Kilar, Vojko (avtor)

This study presents a comprehensive seismic vulnerability assessment of early post-war multi-residential unreinforced masonry (URM) buildings in Slovenia, focusing on structures built between 1945 and 1963. Using an approach that links architectural configuration with structural behavior, over 400 buildings in Ljubljana were categorized into 24 distinct typologies based on shape, height, and structural characteristics. Four representative building types underwent detailed seismic performance evaluation using nonlinear static analysis. The analysis revealed that none of the examined buildings met current Eurocode 8 seismic requirements. Two retrofitting scenarios for enhancing the seismic resilience using Fiber Reinforced Cementitious Matrix (FRCM) were investigated: a selective approach focusing on critical structural elements, and a comprehensive strategy applied to all load-bearing walls. While both scenarios improved seismic performance, they generally fell short of achieving full Eurocode 8 compliance. Interestingly, the selective retrofitting approach demonstrated higher efficiency in some cases. A novel efficiency metric revealed that FRCM retrofitting was generally more effective in directions with lower initial wall percentages. The study highlights the challenges in upgrading existing URM buildings to modern seismic standards and suggests the need for typology-specific approaches to assessment and retrofitting. The findings underscore the importance of tailored strengthening strategies and indicate that achieving full compliance may require more comprehensive or alternative techniques for this vulnerable building stock.

• Jezik: Angleški jezik
• Ključne besede: seismic assessment, masonry buildings, post-war architecture, building typology, FRCM strengthening, equivalent frame modeling, case study, retrofit strategies
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FA - Fakulteta za arhitekturo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: 27 str.
• Številčenje: Vol. 119, art. 105341
• PID: 20.500.12556/RUL-167804
• UDK: 699.8:728(497.4)
• ISSN pri članku: 2212-4209
• DOI: 10.1016/j.ijdrr.2025.105341
• COBISS.SI-ID: 227927555
• Datum objave v RUL: 13.03.2025

Gradivo je del revije

• Naslov: International journal of disaster risk reduction
• Založnik: Elsevier
• ISSN: 2212-4209
• COBISS.SI-ID: 519686169

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: ocena potresne varnosti, zidane stavbe, povojna stanovanjska arhitektura, tipologija stavb, ojačitev s sistemom FRCM, modeliranje z nadomestnimi okvirji, študija primera, potresne utrditve

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P5-0068
• Naslov: Trajnostno oblikovanje kvalitetnega bivalnega okolja