Rigidity Test Research of Rigid and Flexible Flange Connection in Substation Frameworks

Flange connection has been applied widely, and many researches have been done on flange connection both at home and abroad. But the existing research on flange focused on bearing capacity, and there were few reports on the rigidity of flange. In this paper, rigidity test was carried on for the connection of rigid flange and flexible flange in substation frameworks. According to the test results, the tensile rigidity, shear rigidity and flexural rigidity was compared. The results indicated that the tensile rigidity, shear rigidity and flexural rigidity of flexible flange connection was lower than those of rigid flange connection with high strength bolts.