Abstract: Through research on the installation methods of building pipeline supports and hangers, normal and fire?state tensile tests were carried out on typical anchor forms of supports and hangers to verify the fire resistance stability of different anchoring methods. The results show that the tensile strength of different anchor components of supports and hangers can decrease by up to 80% under fire conditions, and there are weak links in their structural stability. Anchor points and suspension rod may experience reduced or even lost fire resistance stability, and there are significant differences in fire resistance performance among different anchor components. Screw?type anchor bolts have the best fire resistance stability, while chemical anchor bolts have the weakest fire resistance stability. Corresponding fire prevention measures need to be taken in practical engineering.

Key words: pipeline supports and hangers, anchoring methods, suspension rod, fire resistance stability