Seismic fragility curves of single storey RC precast structures by comparing different Italian codes
- 25 March 2017
- journal article
- research article
- Published by Techno-Press in Earthquakes and Structures
- Vol. 12 (3), 359-374
- https://doi.org/10.12989/eas.2017.12.3.359
Abstract
The seismic events in Northern Italy, May 2012, have revealed the seismic vulnerability of typical Italian precast industrial buildings. The aim of this paper is to present a seismic fragility model for Italian RC precast buildings, to be used in earthquake loss estimation and seismic risk assessment by comparing two building typologies and three different codes: D. M. 3-03-1975, D. M. 16-01-1996 and current Italian building code that has been released in 2008. Based on geometric characteristics and design procedure applied, ten different building classes were identified. A Monte Carlo simulation was performed for each building class in order to generate the building stock used for the development of fragility curves trough analytical method. The probabilistic distributions of geometry were mainly obtained from data collected from 650 field surveys, while the material properties were deduced from the code in place at the time of construction or from expert opinion. The structures were modelled in 2D frameworks; since the past seismic events have identified the beam-column connection as the weakest element of precast buildings, two different modelling solutions were adopted to develop fragility curves: a simple model with post processing required to detect connection collapse and an innovative modelling solution able to reproduce the real behaviour of the connection during the analysis. Fragility curves were derived using both nonlinear static and dynamic analysis.Keywords
This publication has 19 references indexed in Scilit:
- FEM analysis of the strength of RC beam-to-column dowel connections under monotonic actionsConstruction and Building Materials, 2014
- The Emilia Earthquake: Seismic Performance of Precast Reinforced Concrete BuildingsEarthquake Spectra, 2014
- Effects of May 2012 Emilia earthquake on industrial buildings of early ’900 on the Po river lineEngineering Structures, 2013
- Shear resistance of pinned connections of precast members to monotonic and cyclic loadingEngineering Structures, 2012
- Behaviour of grouted dowels used in precast concrete connectionsStructural Concrete, 2012
- Engineering design earthquakes from multimodal hazard disaggregationSoil Dynamics and Earthquake Engineering, 2011
- Neoprene–concrete friction relationships for seismic assessment of existing precast buildingsEngineering Structures, 2010
- Nonlinear Finite-Element Analysis Software Architecture Using Object CompositionJournal of Computing in Civil Engineering, 2010
- Vulnerability Analysis for Gravity Load Designed RC Buildings in Naples – ItalyJournal of Earthquake Engineering, 2008
- Selection of ground motion time series and limits on scalingSoil Dynamics and Earthquake Engineering, 2006