In order to prevent the damage of pipeline structures under earthquake conditions,a hinged damping support is proposed by incorporating U-shaped mild steel dampers on the basis of tra-ditional seismic support.Taking the commonly used fire pipelines as an example,a numerical model was established using ANSYS software to conduct mechanical analysis on the structure with hinged damping supports.The vibration reduction effect was compared with traditional seismic supports.The results showed that the hinged damping supports had smaller stiffness and more uniform stress.With the in-crease of seismic intensity,the vibration reduction effect of hinged damping supports on pipeline dis-placement and acceleration is significantly better than that of traditional seismic supports.Among them,when the seismic fortification intensity is 7 and 8 degrees,the displacement and acceleration vibration re-duction rates can both reach over 40％.From the proposed hysteresis curve,it can be seen that the hinged damping support has excellent energy dissipation capacity.
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