Impact evaluation of load redistribution on seismic response analysis of piping partially considering the plasticity of support structures

Okuda, Takahiro; Watakabe, Tomoyoshi; Morishita, Masaki; Abe, Kenji*

no journal, , 

This paper describes the results of a series of seismic analyses to clarify how the plastic deformation of some support structures affects the seismic response of the entire piping system. The results of these analyses have revealed important implications for the seismic design of piping systems by elastic-plastic response analysis. First, regarding the order of the support structure considering plasticity, it is more effective to give priority to the plastic characteristics of the support structure showing a large load in the linear response analysis. Second, partially considering plasticity is more effective in reducing the burden of the entire design work than considering the plasticity of the entire support structure.