ASSESSMENT THE PROBABILITY OF FAILURE OF A REINFORCED CONCRETE FRAME UNDER A COLUMN REMOVAL SCENARIO USING THE FIRST-ORDER RELIABILITY METHOD
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Abstract
The article considers issues related to the assessment of survivability of structural reinforced concrete systems in special limit states under the scenario of removal of one of the load-bearing columns within the framework of the probabilistic approach. Probabilistic models of basic (stochastic) variables included in the load and resistance functions are presented. Statistical parameters of the uncertainty of the resistance model and the model of the effect of external actions are obtained and integrated as a basic variable in probabilistic modeling. The functions of the limit state of the structural system in a special calculated situation with a sudden removal of the central column of the first floor are determined. Probabilistic modeling is performed using the first-order reliability method (FORM) for structural reinforced concrete systems designed according to the current standards of the Russian Federation. As a result, the values of the failure probabilities and the corresponding reliability indices are obtained for the considered structural systems.
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