Investigation on engineering demand parameters describing the seismic damage of masonry infilled R/C frames
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Investigation on engineering demand parameters describing the seismic damage of masonry infilled R/C frames Alexios Papasotiriou1 · Asimina Athanatopoulou1 · Konstantinos Kostinakis1 Received: 11 February 2020 / Accepted: 30 July 2020 © Springer Nature B.V. 2020
Abstract The current study investigates the ability of basic response quantities to capture the infill effect on the seismic response of R/C buildings within the context of performance based earthquake engineering. To accomplish this purpose, a large number of planar R/C buildings with different structural systems, storeys’ number and masonry infills’ distributions are studied. The buildings are analyzed using nonlinear time-history analyses for a number of appropriately chosen real ground motions records scaled to 10 different seismic intensities. For the evaluation of the expected structural damage state of each building several different damage measures are used. The response measures adopted are parameters based on the displacement, the local deformation and the dissipated energy per element, as well as parameters capable of capturing the response pattern and the damage concentration in fewer storeys. The research study revealed that in order to assess the infill effect on the global response at least three response parameters are needed. However, if it is necessary to estimate the nature of the infill effect on the basis of a single parameter, a new damage measure based on the deformation demand of columns s proposed. This parameter can be used as an relatively efficient indicator. Keywords Damage measures · Reinforced concrete buildings · Masonry infills · Performance based earthquake engineering · Seismic damage · Time-history analysis
1 Introduction One of the most important stages in the process of seismic risk scenarios of buildings is the assessment of the damage level that is expected to come up in structural members. An efficient and reliable expression of the seismic damage is essential for the accurate evaluation * Konstantinos Kostinakis [email protected] Alexios Papasotiriou [email protected] Asimina Athanatopoulou [email protected] 1
Department of Civil Engineering, Aristotle University of Thessaloniki, Aristotle University Campus, 54124 Thessaloniki, Greece
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Bulletin of Earthquake Engineering
of the seismic performance in the context of performance-based earthquake engineering (PBEE) (Cornell and Krawinkler 2000), which is an especially modern and promising approach to earthquake resistant design of buildings. The aim of this procedure is the assessment of the expected seismic performance of the structures in terms of an efficient engineering demand parameter in order to estimate the possible damage level which can be caused by future earthquakes. The uncertainties associated with this estimation depend on the choice of the engineering demand parameter quantifying the seismic damage level of structural elements. Consequently, a choice of a parameter that is able to effectively capture the seis
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