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dc.contributor.authorDíaz, Sergio Alberto
dc.contributor.authorPujades Beneit, Lluís
dc.contributor.authorBarbat Barbat, Horia Alejandro
dc.contributor.authorVargas Alzate, Yeudy Felipe
dc.contributor.authorGonzález Drigo, José Ramón
dc.contributor.authorAlva Bañuelos, Rodrigo Esteban
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Enginyeria Sísmica i Dinàmica Estructural
dc.identifier.citationDíaz, S. [et al.]. New capacity and energy based damage index. A: European Conference on Earthquake Engineering. "16th European Conference on Earthquake Engineering: conference proceedings". 2018, p. 1-12.
dc.description.abstractNon-linear dynamic analysis and the damage index of Park-Ang have been often used to assess expected seismic damage to a structure. Depending on the size of the structure and the duration of the record, the computational effort in dynamic analyses is usually high. In this research, a new damage index is proposed based on nonlinear static analysis. The damage index is a linear combination of two energy functions: 1) the strain energy associated with the stiffness variation and the ductility of the structure, and 2) the dissipated energy associated with hysteretic cycles. These two energy functions are obtained from the capacity curve of the structure and from the energy balance with the spectral acceleration. To show the ability of the index to represent damage, low-rise steel buildings were studied under the seismic actions that are expected in Mexico City. The results obtained with the new method show good agreement with those calculated by means of dynamic analyses using the Park-Ang damage index. On average, the Park-Ang damage index is well-fitted by the combination of 62% of the strain energy and 38% of the energy dissipated by hysteresis. Moreover, the new damage index can link damage to certain characteristics of seismic actions, such as their intensity and duration. Therefore, the new approach results in a practical, powerful tool for estimating seismic damage in buildings, especially as probabilistic approaches require massive computations.
dc.description.sponsorshipThis research was partially funded by the Ministry of Economy and Competitiveness (MINECO) of the Spanish Government and by the European Regional Development Fund (ERDF) of the European Union (EU) through projects referenced as: CGL2011-23621 and CGL2015-65913-P (MINECO/FEDER, UE).
dc.format.extent12 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Sismologia
dc.subject.lcshBuildings--Earthquake effects--Mathematical models
dc.subject.otherCapacity curve
dc.subject.otherDamage assessment
dc.subject.otherStrain energy
dc.subject.otherEnergy dissipated by hysteresis
dc.subject.otherMonte Carlo simulations
dc.titleNew capacity and energy based damage index
dc.typeConference report
dc.subject.lemacEdificis -- Efecte dels terratrèmols
dc.contributor.groupUniversitat Politècnica de Catalunya. GIES - Geofísica i Enginyeria Sísmica
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorDíaz, S.; Pujades, L.G.; Barbat, A.; Vargas, Y.; Gonzalez-Drigo, J.R.; Alva, R.
local.citation.contributorEuropean Conference on Earthquake Engineering
local.citation.publicationName16th European Conference on Earthquake Engineering: conference proceedings

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