807 Deformation behavior of bolted flanged joints used gas pipeline network

Abstract

In this study, four cases of bending tests were conducted to evaluate the deformation behavior of bolted flanged joints. Experimental results showed that the evaluation method specified in "Seismic design code for high pressure gas facilities" was applicable to bolted flanged joint used in city gas pipeline network, such as the joints between valve and straight pipe. In addition, it was revealed that the buckling and leakage may occur at straight pipe before the leakage at bolted flanged joints.