Study on bearing performance of heavy pipeline support and hanger with different connection nodes
With the rapid development of prefabricated buildings,the application scope of prefabricated pipeline supports and hangers is becoming wider and wider.Compared with traditional welding supports and hangers,prefabricated supports and hangers have the advantages of high construction efficiency and low environmental pollution.At present,there is a lack of design specifications and related research on assembled heavy supports and hangers.Therefore,full-scale experiment research on assembled heavy supports and hangers with different connection modes was carried out.Combined with numerical simulation and theoretical analysis,the failure modes and bearing capacity of supports and hangers with different connection nodes were explored.The study results show that the failure modes of the supports and hangers at different nodes are all the bending and torsion failure of the horizontal beams,and they are in line with the characteristics of extreme point instability.The bearing capacity of supports and hangers using channel steel horizontal beams and semi-groove connectors is significantly lower than that of H-shaped steel horizontal beam supports and hangers using end-plate connections.The bearing capacity of the extended vertical end-plate connection structure is better than that of the flush vertical end-plate connection and the horizontal end-plate connection.In the theoretical calculation,the semi-rigid connection model can be used to calculate the semi-slot connection node and the extended end plate connection node,and the hinged model can be used to calculate the flat end-plate connection node.The overall stability coefficient of the four node forms is higher than the standard calculation value,which can meet the requirements of the overall stability.
assembled pipelinesupport and hangernode connectionsteel beamsemi-slot connectorfull-scale experimentbearing capacitystability
万方数据
维普
