Investigation of the Effect of changing the degree of freedom at the connection point of support to the foundation on the seismic behavior of the SUPPORTING of the gas pressure reducing station

Abstract

This study aimed to study the seismic behavior of the SUPPORTING of the gas pressure reducing station due to the change in the degree of freedom at the SUPPORT to the foundation connection point. In this research, the effective parameters on stress analysis of supports in the gas station have been studied and numerically analyzed as a case study using the high-pressure station type map implemented by the National Iranian Gas Company to identify the factors affecting the design and strengthening of the gas station PIPING system. The results showed that the change in the degree of freedom at the SUPPORT to the foundation connection point on the seismic behavior of the SUPPORTING (as metal support and concrete support) of the gas pressure reducing station had a notable impact on the seismic bearing capacity of the PIPING system. The effect of changing the degree of freedom at the connection point of SUPPORT to the foundation on the seismic behavior of SUPPORTING gas pressure reducing station by changing the type of connection of pipes to the ground with metal support and concrete support showed the amount of final bearing capacity compared to the use of metal bases was 16.89% more effective.