Abstract This study is concerned with the inelastic seismic response of nuclear power plant piping systems. Two systems are examined. The first one is an idealized four-equal-span pipe run and the second one consists of two configurations modified from an existing pipe run. Detailed finite element seismic time history analyses are performed using the Ansys computer program. By varying the various geometrical and physical parameters, calculations are made for a total of 76 cases. The results show that ductility generally contributes to reducing the response of piping systems. An empirical relation between the support load reduction factor and support ductility demand is given and a chart and simple procedures are suggested for the design and qualification of piping supports taking ductility into consideration.
[1]
A. Ugural,et al.
Advanced strength and applied elasticity
,
1981
.
[2]
K. R. Jaquay,et al.
Incremental-hinge piping analysis methods for inelastic seismic response prediction
,
1989
.
[3]
E. Kokubo,et al.
Analysis of piping with hysteretic supports using response spectra
,
1993
.
[4]
Gert König,et al.
Damping in piping systems due to local nonlinearities
,
1989
.
[5]
Rafael Riddell,et al.
Effect of Initial Base Motion on Response Spectra
,
1978
.
[6]
R. Clough,et al.
Dynamics Of Structures
,
1975
.