Abstract

Recent research related to probability-based structural design has become more active, especially in the field of the load and resistance factor design (LRFD) technique. This paper also describes some contributions to the improvement of the LRFD method. In this paper, a rational and analytical method to determine the required code format and load factors, which were determined experimentally in many former LRFD studies, considering the dynamic characteristics of a structure is newly proposed on the basis of the dynamic reliability technique with the load combination theory. The usefulness of this proposed method is described in an application to the selection problem of the required code format and load factors against a typical structure that is flexible and excited due to multiple random loads.

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