Collecting and Managing Building Data to Perform Seismic Risk Assessment – Palestine Case Study
This paper describes a web interface with GIS functionality (WebGIS) that Eucentre (EUropean CENtre for Training and Research in Earthquake engineering) developed for SASPARM 2.0 (Support Action for Strengthening PAlestine capabilities for seismic Risk Mitigation) project .
The SASPARM 2.0 WebGIS is a simple and intuitive platform intended for people with different backgrounds, such as citizens, students, practitioners, governmental and non-governmental institutions. The final aim of the implemented WebGIS application is to calculate the seismic risk of residential buildings. Nablus has been taken as case study to demonstrate, implement, and calibrate project actions. To calculate the seismic risk, residential buildings data are collected. Such activity can be conducted by both practitioners and citizens who compile two standard forms that differ from each other only in terms of detail. The survey forms can be compiled directly on WebGIS, at the dedicated tabs, or through two mobile apps designed for the purpose. All filled forms are shown on the homepage map of the WebGIS platform. Starting from the collected data, the seismic risk of each single building is evaluated by combining the hazard and the vulnerability with its exposure. In particular, the seismic demand to which each building is subjected to is defined from the hazard curve. In the specific case study of Nablus, the hazard curve is obtained by referring to “West Bank and Gaza Strip: Seismic Hazard Map Distribution”. The structural vulnerability, instead, is quantified through fragility curves calculated with the mechanical method SP-BELA (Simplified Pushover-Based Earthquake Loss Assessment), modified to represent the building environment of Nablus.
KeywordsVulnerability assessment Seismic risk WebGIS platform Mobile app
This research has been conducted within the project “ECHO/SUB/2014/694399 SASPARM 2.0 Support Action for Strengthening Palestine capabilities for seismic risk mitigation”, a project co-financed by DG-ECHO - Humanitarian Aid and Civil Protection. We thank R. Monteiro, P. Ceresa, V. Cerchiello and I. Grigoratos (IUSS, Pavia) for the WebGIS section to retrofit and Prof. J. Dabbeek and his staff (An-Najah National University, Nablus) for structural information on Palestinian buildings.
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