Including Multiple Ground Motion Intensity Measures in the Derivation of Fragility Functions for Earthquake Loss estimation

Main Article Content

Luís Sousa
Vítor Silva
Mário Marques
Helen Crowley

Abstract

This paper presents a methodology for the appropriate treatment of variability in the process of building vulnerability assessment. Material, geometric and mechanical properties of the assessed building typologies are simulated through a Monte-Carlo sampling procedure in which the statistical distribution of the latter parameters are taken into account. Record selection is performed in accordance with conditional hazard-consistent distributions of a comprehensive set of intensity measures, and matters of sufficiency, efficiency, predictability and scaling robustness are envisaged in the presented framework. Several intensity measures (IMs) are conjugated in the evaluation of building fragility and vulnerability, whereby fragility functions are established as the multivariate distribution of joint probability of being in a sequential set of damage states. Vulnerability Functions consequently determined provide not only a mean Damage Ratio per level of seismic intensity, but rather probabilistic distributions of Damage Ratio that reflect the ground motion variability expected as the interested site; as determined by the hazard-consistent conditional distribution of a set of sufficient intensity measures.

Downloads

Download data is not yet available.

Article Details

Author Biographies

Luís Sousa, Universidade do Porto

Departamento de Engenharia Civil

Faculdade de Engenharia

Universidade do Porto

Rua Dr. Roberto Frias

4200-465 PORTO

Portugal

Vítor Silva, Universidade de Aveiro

Departamento de Engenharia Civil

Universidade de Aveiro

Campus Universitário de Santiago

3810-193 AVEIRO

Portugal

Mário Marques, Universidade do Porto

Departamento de Engenharia Civil

Faculdade de Engenharia

Universidade do Porto

Rua Dr. Roberto Frias

4200-465 PORTO

Portugal

Helen Crowley, European Centre for Training and Research in Earthquake Engineering

European Centre for Training and Research in Earthquake Engineering

Via A. Ferrata, 1 – PAVIA

Itália