Horizontal Bi-Axial Shake Table Test of Multi-Supported Piping System with a Damaged Support Structure and Earthquake Response Analysis of the Shake Table Test

Abstract

This study reports on a horizontal bi-axial shake table test using a multi-supported piping system with a damaged support structure. After fracture of the support structure, the seismic response amplitude of the piping increased but that of the piping system remained relatively stable. The stress distributions on the piping before and after the fracture of the support structure, and the 45-directional stress on the vertical piping, were examined. In addition, the seismic response analysis of the shake table test was conducted. The numerical model of the response analysis, in which the fractured support structure was removed, effectively predicted the piping response after the fracture.