Development of Building Damage Functions for Earthquake Loss Estimation

Abstract

This paper describes building damage functions that were developed for the FEMA/NIBS earthquake loss estimation methodology (Whitman et al., 1997). These functions estimate the probability of discrete states of structural and nonstructural building damage that are used as inputs to the estimation of building losses, including economic loss, casualties and loss of function (Kircher et al., 1997). These functions are of a new form and represent a significant step forward in the prediction of earthquake impacts. Unlike previous building damage models that are based on Modified Mercalli Intensity, the new functions use quantitative measures of ground shaking (and ground failure) and analyze model building types in a similar manner to the engineering analysis of a single structure.

Analytical versus observational fragilities: the case of Pettino (L’Aquila) damage data database

“…This methodology has been applied to different earthquake cases (De Luca et al 2013a;Manfredi et al 2013), such as Lorca (2011), Spain, and Emilia (2012), Italy. The approach belongs to the wider family of vulnerability assessment methodologies based on spectral displacements (e.g., Kircher et al 1997;Erdik et al 2004, among others) in which damage states are classified according to the 1998 European Macroseismic Scale (Grünthal et al 1998). On the other hand, in analogy with other vulnerability approaches available in literature (e.g., Ricci 2010), it is able to capture the structural contribution provided by nonstructural masonry infills.…”

İstanbul’daki 2000 Yılı Sonrası Binalar İçin Tasarım Depremi Altında Karşılaştırmalı Yapısal Hasar ve Mali Kayıp Tahminleri

“…), düşey eksen ise yapısal hasarın belli bir hasar düzeyine erişmesinin veya aşmasının yığışımlı olasılığını göstermektedir. Deprem hasarlarının olasılıksal dağılımının log-normal dağılıma uyduğu varsayımı ile her bir hasar düzeyi için olasılık eğrisinin analitik ifadesi aşağıdaki biçimde yazılabilir [25,26]:…”

Rapid Earthquake Loss Assessment After Damaging Earthquakes

“…An analytical method for estimating seismic fragility that uses nonlinear pseudostatic structural analysis is described by Kircher et al (1997), where the lateral force versus the lateral displacement curve of the building structure, idealized as an equivalent nonlinear, single degree of freedom (SDOF) system, is obtained. This curve is transformed to the spectral displacement-spectral acceleration space to obtain the so-called capacity spectrum.…”