Finite Element Analysis And Experimental Study Of Damping Pin Bearing

With the rapid development of society,the emergence of various new materials,new technology and new technology,make people for the size and appearance of the building will have new requirements.Therefore,large span structure gets gradually the favour of architects,this structure not only increase people’s activity space,on the design of the model also has a lot of flexibility.However,all the upper structure must be through the bearing ground or connected to the lower structure bearing for the main structure of large span steel structure,is extremely important Pin shaft bearing appearance is beautiful.Free expansion and strong initiative.But due to the temperature and the direction of the seismic action is uncertain,this node can’t guarantee any direction turning performance,more can’t ensure out-of-plane fatigue resistance,once the uncertain loads on the contact surface,the ear plate is extremely easy to be bent,broken cause potential safety hazard.This topic put forward a new kind of shock absorption type pin shaft bearing design innovation,and has carried on the finite element research and test for the following main conclusions:(1)Shock absorber pin bearings have excellent performance and good rotational ability.In the design,only axial force and shear force are transmitted,and the bending moment is not transmitted,which can be an ideal hinge point.(2)Suspension type pin shaft bearing can meet the main stress direction(inplane)under the action of earthquake seismic design,the structure of the main stress direction(out-of-plane)assume the non-deterministic earthquakes have obvious shock absorption and deformation ability to adapt.(3)The finite element simulation test can simulate the mechanical properties of pin bearing.The new type damping pin shaft support can transmit resistance to vertical load,and can cushion and resist the influence and function of the surface load,which conforms to the concept and development trend of precise design.When the pin shaft is destroyed first,the structure can form an ideal hinge to release the excess internal force,thus avoiding the destruction of the main structural components.After overload,the original structure can be restored by replacing the damaged pin shaft device.