METHODS FOR COMBINING LOADS IN THE DESIGN OF THE SEISMIC STABILITY STRUCTURES

The ways of combining loads in evaluating strains and other indicators of the structure operation are considered. The main attention is paid to two methods: constructing the distribution density function of the analyzed factor caused by the simultaneous action of loads and the analysis of equiprobable pairs of the considered loads. It is shown that these methods are described by different equations and lead to different results. The first way is more conservative. The ambiguity of the task of determining the load design combination is noted. The conclusions are illustrated by a simple example.