Real-time assessment framework of spatial liquefaction hazard in port areas considering site-specific seismic response |
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Institution: | 1. Department of Civil Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece;2. Institute of Engineering Seismology and Earthquake Engineering (EPPO), Thessaloniki, Greece;1. Division of Advanced Materials Engineering, Research Center of Advanced Materials Development, Engineering College, Chonbuk National University, Republic of Korea;2. Minerals and Materials Processing Division, Korea Institute of Geoscience, Mining and Materials Resources, Daejeon, Republic of Korea;1. Department of Civil Engineering, University of Kurdistan, Sanandaj, Iran;2. Earthquake Engineering Research Centre, University of Iceland, Selfoss, Iceland |
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Abstract: | This paper proposes a systematic framework for real-time assessment of spatial liquefaction hazard of port areas considering local seismic response characteristics based on a geographic information system (GIS) platform. The framework is integrated and embedded with sequential, interrelated subprocedures and a database for liquefaction-induced damage evaluation that standardizes and both individually and collectively quantifies analytical results. To integrate the current in situ condition of a selected port area, the framework functions as a spatial database system for geotechnical and structural data and as a recipient of automatic transmission of seismic monitoring data. The geotechnical profile correlated with liquefaction potential is compiled into a geotechnical spatial grid built by geostatistical methods. Linked with the geotechnical spatial grid, the processing of site-specific responses is automatically interpreted from previously derived correlations between rock acceleration and maximum acceleration of each soil layer. As a result, the liquefaction severity is determined based on a combined geotechnical spatial grid with seismic load correlation in real-time according to a simplified procedure, allowing calculation of the liquefaction potential index (LPI). To demonstrate practical applications of the framework in estimating the liquefaction hazard in real-time, liquefaction-hazard maps were visualized for two earthquake scenarios, verifying the applicability of the proposed framework. |
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Keywords: | Real-time assessment Liquefaction hazard Geostatistical method Site-specific seismic response Port areas GIS |
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