A Study on Performance-based Seismic Design Method of Fire Extinguishing Pipe System

Abstract

In the present study, a Cook Book method and a Static System Analysis method were compared with each other on the basis of a seismic design criteria of fire-fighting facilities and analyzed. The Cook Book method is analyzed by dividing a pipeline in each same section. In this method, a stress analysis is not possible except for the section analyzed in such a way that a brace is designed according to the weight of pipe, water and pipe fitting. To the contrary, in case of the Static System Analysis method, the stress analysis for the whole pipeline can be performed because the whole pipeline is regarded as a single structure. For the fatal stress values locally generated, it is necessary to actively perform a pipeline analysis by installing a device capable of locally relieving the stress of the pipeline. In Korea, only the Cook Book method is provided as the seismic design criteria of fire-fighting facilities, which causes many problems with diversification of seismic design. Thus, it is necessary to apply the seismic design method of the pipeline by using various kinds of engineered Static System Analysis methods. (2) 소방시설에 대한 내 진설계 기준은 국내 현장에 적용할 만한 기준이 없어 † Corresponding Author, E-Mail: 27095p@naver.com,

A Study on Seismic Design Method Considering Physical Properties of Piping Material

“…있어 배관 및 지지대의 파손 등의 문제점이 발생될 수 있 다 (2) . 지진이 발생할 경우 배관은 일정구간에 따라 해석이 가능한 것이 아니며 모두 일체화로 거동하기 때문에 전체 배관에 대한 응력과 변위를 해석하여야 한다.…”

“…Isometric diagram of the node with the largest displacement(2) . direction)축 그리고 U3 (Z-axis direction)축 중 U1 (X-axis direction)축과 U3 (Z-axis direction)축 방향으로 지반가속도가 영향을 줄 경우에 가장 큰 응력 및 변위가 발생됨을 알 수 있 었다.…”