구조물의 확률론적 위험성 평가를 위한 기초연구

Abstract

Most of civil engineering structures are designed by the deterministic method. This method has many problems as experience is the only tool to identify the traits of the material. It is required to design in a probabilistic method, which practically reflects the characteristic of material as much as possible. The subject of this study is the risk assessment about the 30m standard I-shaped PSC beam which is the most common PSC beam. Random variables are the wobble friction coefficient() and the curvature friction coefficient() which are determined by AHP(Analytic Hierarchy Process). This study conducted the reliability analysis on the deflection and tensile stress of concrete using the RSM(Response Surface Method). In this paper, it showed that the reliable conclusion could be drawn from using the random variable which was decided through not only the result of estimation about the risk assessment of the structure but also the method of AHP(Analytic Hierarchy Process).