Faculty of Civil and Geodetic Engineering, Ljubljana (FGGLJ)
13.
Fast seismic performance assessment of RC frame structures with consideration of aleatory and epistemic uncertainty by utilizing PBEE toolbox and web application for prediction of IDA curves [Elektronski vir]
Celarec, Daniel, 1981 ; Dolšek, Matjaž
A simplified methodology for seismic performance assessment of structures withconsideration of both aleatory and epistemic uncertainty is briefly presented. The methodolo-gy involves pushover ...analysis for a set of structuralmodels and nonlinear dynamic analysis of corresponding equivalent SDOF models. However, a methodology by itself without any support of sophisticated computational software is not intended to be used for practical ap-plications. Thus, a very efficient software tool, a PBEE toolbox [1] in conjunction with Open-Sees, was used in our study in order to perform pushoveranalyses of required computational simulations, while nonlinear dynamic analysis are approximately computed by using a web application for prediction of IDA curves [2], which was recently developed within ICE4RISK project. Presented methodology and software tools are demonstrated by means ofan example of a three-storey reinforced concrete frame building. The resultsof the presented example have indicated that incorporation of the epistemic uncertainty, in addition to aleatory uncer-tainty, slightly increases dispersion and can substantially decrease the limit-state intensities. This effect increases with the severity of the limit state. It was also proved that sophisticated software tools are important ingredient of performance-based earthquake engineering and can significantly facilitate transferring knowledge into practice.
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