Determination of the reliability level of reinforced concrete columns of a frame building erected according to the KUB-2.5 system

Abstract

The article presents the results of calculating the probability of trouble-free operation of a reinforced concrete column of a public building designed according to the KUB-2.5 frame system. This system is widely used nowadays for the construction of both public and residential buildings. In this regard, information about the reliability levels of the main load-bearing structures of buildings erected according to this system is very relevant. The column was chosen as the main supporting structure under consideration, as the most responsible structural element of the system. The initial data for the calculation were taken on the basis of information according to the series, regulatory documents, as well as with the involvement of the necessary reference data. The probability of failure-free operation was determined using existing linearization techniques and moments for the fifty-year life of the building.

Calculations have shown that the columns have high values of the probability of trouble-free operation. In order to assert that these values are sufficient, they must be compared with the normative values, which directly depend on the purpose of the building and premises.