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INTERNATIONAL WEBINAR
FRAMEWORKS FOR NATURAL HAZARD FRAGILITY ASSESSMENT

The Technical Committee on Disaster Risk Management of the World Federation of Engineering Organizations (WFEO) and the Peruvian Engineers Association (CIP) are organizing this important event to be held on January 10th, at 07:00 hrs. in Lima and 12:00 hours in London.

In the first presentation of this session, Maria will introduce the fundamental aspects of a novel analytical framework for assessing the performance of reinforced concrete (RC) structures subjected to dry granular flows. The soil pressures acting on rigid structures are initially identified through a 3D Material Point Method (MPM) model of a flume experiment. The model is adapted to simulate a building by replacing the retaining wall with a reduced-width obstacle, allowing for the investigation of the impact of blockage ratio on force distribution. The recorded soil forces are then applied to a 3D RC frame building in OpenSees, facilitating both static and dynamic analyses. The results demonstrate the adequacy of adopting a practice-oriented static approach for evaluating landslide induced structural damage. Maria will conclude her presentation by highlighting the significant differences in structural behavior under landslide and seismic loads.

Sahin will follow this presentation by addressing the findings of an extensive research project on the seismic vulnerability of high-rise tunnel-form buildings, a prevalent building typology used in mass housing projects in seismically active regions, such as Türkiye. His ongoing research project synthesizes a sophisticated numerical model, multi-staged verification protocols, and post-earthquake field observations to examine the seismic performance of tunnel-form buildings. The salient structural features of the typology, nuances in numerical modelling, observed damage mechanisms following the 2023 Türkiye earthquakes and an overview of the fragility framework adopted in this research project will be discussed.

Finally, Harikesan’s presentation will cover the growing need to understand the vulnerability of the green economy to natural hazard events. Given the complexity and low exposure history of these assets, assessing their vulnerability poses a major challenge for the insurance industry. In his talk, Harikesan will provide an overview of a systematic literature review conducted as part of a UCL-AXA collaboration, which determined the suitability existing literature for this purpose. It will be followed by an overview of his current PhD research looking at the vulnerability of onshore wind turbine gearboxes to extreme wind events – a critical area in need of further research.

PROGRAMME

Welcome José Macharé Ordoñez –President of the CDRM-WFEO, Peru
Introduction Valentina Putrino – Catastrophe Risk Analyst at Ariel Re. Leader of Working Group 4 – Capacity Building del WFEO-CDRM, United Kingdom
Case of study  

An Analytical Framework for Assessing the Impact of Dry Granular Flows on Structures

Maria Kontoe – PhD Researcher | UCL EPICentre

 

Seismic Vulnerability of High-Rise Tunnel-Form Buildings

Sahin Dede – PhD Researcher | UCL EPICentre

 

Assessing the natural hazard vulnerability of the green economy

Harikesan Baskaran – PhD Researcher | UCL EPICentre

Comments and questions From experts and the general public
Closing Valentina Putrino – Catastrophe Risk Analyst at Ariel Re. Leader of Working Group 4 – Capacity Building del WFEO-CDRM, United Kingdom

OUR SPEAKERS

Maria is a civil engineer with a strong Background in structural engineering, holding a diploma from the National Technical University of Athens (N.T.U.A.) and an MSc in Earthquake Engineering with Disaster Management from University College London (U.C.L.). She has worked as a researcher on natural disaster impact mitigation at the National Observatory of Athens (N.O.A.) and gained practical experience as a structural engineer with leading firms, O.C.S.C. and AKTII. Currently, she is pursuing her PhD at U.C.L., focusing on developing an analytical framework to assess the impact of earthquake-induced landslides on building structures.
Sahin is a civil engineer with expertise in earthquake engineering, holding a master’s degree in the same field from Bogazici University. He is presently engaged in doctoral research at University College London, investigating the multi-hazard vulnerability of complex, shear-walled structures under multi-hazard scenarios by integrating sophisticated numerical modelling, advanced programming and post-earthquake field observations. His experience includes urban risk assessment, post-earthquake field reconnaissance missions, performance-based earthquake engineering, and finite element modelling of structures under extreme loading conditions.
Harikesan is a PhD Researcher at UCL EPICentre, under the supervision of Professor Tiziana Rossetto (UCL EPICentre) and Professor Catalina Spataru (UCL Energy Institute). His work focuses on using a mixed – methods approach to determine the vulnerability of green economy assets to natural hazards. Harikesan has a multidisciplinary academic background in mechanical engineering and international development. Previously, he has worked within the UCL EPICentre–led ReSCOOL partnership, developing empirical tsunami fragility functions for Sri Lankan school buildings.

OUR MODERATOR

Dr Valentina Putrino is currently a Catastrophe Risk Analyst at Ariel Re. She obtained her PhD from University College London (UCL), focusing on developing a framework for multi-hazard assessment of historic stonework structures. She currently holds the position of Chair of the EEFIT Committee, she is the SECED Representative for the World Federation of Engineering Organizations (WFEO) – Committee on Disaster Risk Management (CDRM) and is also the designated liaison member between both SECED and EEFIT committees.