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Kakderi, Kalliopi
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- PublicationRestrictedSEISMIC PERFORMANCE OF A SYSTEM OF INTERDEPENDENT LIFELINE AND INFRASTRUCTURE COMPONENTS(2011-03)
; ; ; ; ;Selva, Jacopo; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia ;Kakderi, Kalliopi; Aristotle University of Thessaloniki ;Alexoudi, Maria; Aristotle University of Thessaloniki ;Pitilakis, Kyriazis; Aristotle University of Thessaloniki; ; ; ; ; ;Tokimatsu, Kohji; CUEE Tokyo TechThe aim of this research is to develop a generic procedure for the assessment of the serviceability of a system (single system or system of systems) if one or more interacting components of the system are damaged by an earthquake. The system serviceability (functionality) is evaluated starting from the expected degree of damage of the single components (direct physical damage estimated using appropriate fragility functions) and accounting for their functional interaction (functional system architecture and single or by-directional interactions among components). Through the evaluation of the components’ non-functionality, the overall serviceability of the system is assessed, possibly in the form of a “system serviceability curve”, for different levels of seismic input intensity. Aleatory and epistemic uncertainties are treated using a Bayesian inference. The applicability of the proposed approach is established through an illustrative example. It is shown that the methodology is quite general and applicable to real systems with diverse degrees of complexity and knowledge of system and components details.126 22 - PublicationOpen AccessPrediction of Ground Motion and Loss Scenarios for Selected Infrastructues Systems in European Urban Environments(2007-07)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Faccioli, E.; SGI-Milano ;Callerio, A.; SGI-Milano ;Ameri, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Zonno, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Pacor, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Akinci, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Cultrera, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Cocco, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Franceschina, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Pessina, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Lombardi, A. M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Pitilakis, K.; Univerisy of Thessaloniki, Greece ;Kakderi, K.; Univerisy of Thessaloniki, Greece ;Alexaudi, M.; Univerisy of Thessaloniki, Greece ;Kim, S.; Univerisy of Thessaloniki, Greece ;Ansal, A.; Koery, Turkey ;Erdik, M.; Koery, Turkey ;Tonuk, G.; Koery, Turkey ;Dermircioglu, M.; Koery, Turkey ;Paolucci, R.; Politecnico Milano ;Scandella, L.; Politecnico Milano; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; computational tools needed for developing scenarios of earthquake ground motions and of ensuing damage to representative urban Infrastructure Systems (IS), as well as with illustrative examples of application to cities in Europe and neighbouring countries. The material illustrated is the outcome of the work carried out in LESSLOSS Sub-Project SP11, devoted to the title subject. Of main concern are the water and natural gas distribution networks and the sewage networks, because these are, with the transportation network, by far the most extensive IS in cities and, especially the first one, often the most vulnerable. Also, emphasis is placed more on the tools for achieving a scenario and on their application, rather than on the economic loss evaluation. As a partial justification of the belated development and interest in seismic IS damage, it is recalled that destructive earthquakes of recent decades in Europe did not cause large scale damage to IS. In addition to describing tools for the practical construction of damage scenarios for IS, the report also highlights some innovative research trends in the field, especially the methods leading to the estimation of pipeline damage on the basis of the peak ground strains generated by the propagation of seismic waves, which in turn needs the support of advanced 2D or 3D wave propagation modelling. The main sections of the report are devoted to: - Calculation of seismic ground motions in an area, both of advanced and simplified engineering level, with applications for Thessaloniki and Düzce (Sect 2); - Outline of the buried pipelines response during earthquakes, illustrating the chief elements at play on the side of the seismic loading effects and typical damage (Sect. 3); - Vulnerability representations for IS components, mostly those consisting of buried pipelines (Sect. 4); - Typical features of IS inventories, with examples (Sect 5); - Damage evaluation tools at urban scenario and single pipeline level (Sect. 6); - Damage scenario applications for Thessaloniki and Düzce (Sect 7); - Conclusions.292 936 - PublicationOpen AccessApplication of stress test concepts for port infrastructures against natural hazards. The case of Thessaloniki port in GreeceAn engineering risk-based methodology for stress testing critical infrastructures is introduced and applied to the port of Thessaloniki in Greece exposed to seismic, geotechnical and tsunami hazards. The methodology workflow consists of four phases: Pre-Assessment, Assessment, Decision and Report phase. In the pre-assessment phase, all the necessary information is collected and archived. For the pilot study, the inventory includes the main port components namely buildings, waterfronts, cranes and the electric power system. Generic or site-specific fra- gility models are used for all exposed elements and considered hazards. Risk metrics and objectives are defined related to the functionality of the system and the structural losses. In the first level of the assessment phase, the performance of each component is evaluated using a risk-based approach. Then, a system level probabilistic risk analysis is conducted separately for earthquake and tsunami hazards. A complementary scenario-based risk analysis is carried out aiming to investigate the impact of site-specific response and extreme seismic events to the performance of the port. In the Decision phase, the results are compared with predefined objectives to decide whether the infrastructure passes, partly passes or fails the test. Guidelines and strategies to improve the per- formance and resilience of the port are summarized.
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