Connecting node for trusses made of composite materials

Abstract

The invention provides a connecting node for trusses made of composite materials. The connecting node comprises a conical connector and a conical connecting barrel. The shape of an inner barrel of the conical connecting barrel is consistent with the external profile of the conical connector, through holes are formed in barrel walls of the conical connecting barrel, sealing adhesive hoses are arranged on the barrel walls of the conical connecting barrel and are filled with adhesive, the conical connector is embedded in a truss pipe made of composite materials, a large-diameter end of the conical connector is integrated with the inner wall of the truss pipe, and the conical connecting barrel is fixedly connected to the other end of another truss pipe made of composite materials. The connecting node has the advantages that various accessories of the connecting node can be prefabricated and machined in a factory in advance, accordingly, truss structures can be modularly produced and can be transported to fields in a sectioned manner, the connecting node can be quickly assembled, the construction time can be effectively saved, the work efficiency can be improved, and nodes for the trusses can be assuredly reliably connected with one another, and reasonable stress on the nodes can be guaranteed.

Description

technical field [0001] The invention relates to a truss connection structure, in particular to a composite material truss connection structure. Background technique [0002] Due to the characteristics of high specific strength and high specific stiffness of composite materials, composite truss structures are widely used in the fields of construction, transportation and aerospace. The nodes are the most critical parts in the truss structure, which directly affect the mechanical properties of the truss structure. At present, composite trusses can be divided into integrally formed truss structures and assembled truss structures according to the forming method. The integrally formed truss has a complex manufacturing process and is suitable for factory processing, while the assembled truss has a relatively simple manufacturing process and is suitable for construction site processing. Assembled trusses often use two node connection methods. One is to use metal connectors, which a...

AI Technical Summary

Problems solved by technology

Assembled trusses often use two node connection methods. One is to use metal connectors, which are similar to steel truss nodes. Metal joints need to be connected at the joints in advance. destroy

The other is to use composite material joints. Common methods include (1) directly wrapping composite material fibers and rods to form joints. This method is cumbersome and slow in construction; (2) prefabricated composite material joints require Mandrel, the process is complex, and the prepared nodes are highly discrete; (3) Directly connecting the rods with bolts requires drilling holes in the rods, and the joints are weakened and prone to damage

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