Connecting structure and method for pultrusion reinforcement fiber reinforced polymer (FRP) pipe
A connection structure and reinforcement technology, applied in the connection of rods, connecting members, pipeline connection and other directions, can solve the problems of limiting the bearing capacity of FRP pipes, aging of glue joints, etc., and achieve simple structure, improved bearing capacity, and reliable connection. Effect
Pending Publication Date: 2020-02-07
ARMY ENG UNIV OF PLA
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Problems solved by technology
However, the bonding force of the FRP pipe and the metal joint is proportional to the bonding length within a certain range. After the critical length is exceeded, the bonding force does not increase with the increase of the bonding length. This phenomenon limits the bearing capacity of the FRP pipe, and the bonding Significant aging issues
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[0044] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0045]Terms such as "front", "rear", "left", "right", "inner", "outer", and "middle" quoted in this specification are only for the convenience of description, not for Limiting the practicable scope of the present invention, and the change or adjustment of the relative relationship shall also be regarded as the practicable scope of the present invention without substantive changes in the technical...
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The invention discloses a connecting structure and method for a pultrusion reinforcement fiber reinforced polymer (FRP) pipe, and belongs to the technical field of composite connection. The connectingstructure for the pultrusion reinforcement FRP pipe comprises the FRP pipe and a flange plate; two or more reinforcements are arranged on the inner wall of the FRP pipe, and each reinforcement comprises a cylindrical reinforcement part and a supporting part, and at least one end of each cylindrical reinforcement part is provided with a connecting section stretching out of the corresponding supporting part; the flange plate comprises a cylinder part, a flange part and a connecting part, and first through holes are formed in the connecting part; and the connecting part of the flange plate abutsagainst the end faces of the supporting parts of the reinforcements, the connecting section of each cylindrical reinforcement part penetrates through the corresponding first through hole, and the penetrating-out ends of the connecting sections are provided with locking pieces correspondingly. The connecting method for the pultrusion reinforcement FRP pipe adopts the connecting structure for the pultrusion reinforcement FRP pipe. The structure is simple, connecting is reliable, and the bearing capacity of the FRP pipe is improved.
Description
technical field [0001] The invention belongs to the technical field of composite material connection, and in particular relates to a connection structure and a connection method of a pultrusion reinforced FRP pipe. Background technique [0002] Fiber Reinforced Polymer (or Fiber Reinforced Plastic, referred to as FRP) is formed by reinforcing fiber materials, such as glass fiber, carbon fiber, aramid fiber, etc., and matrix materials through winding, molding or pultrusion. composite material. Due to the advantages of light weight, high strength and corrosion resistance, composite materials have gradually been widely used in engineering fields. [0003] At present, FRP pipes are connected by bonding a metal joint at both ends of the pipe body, and then connecting with other FRP pipes or parts through metal joints. However, the bonding force of the FRP pipe and the metal joint is proportional to the bonding length within a certain range. After the critical length is exceeded...
Claims
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Login to View More IPC IPC(8): F16L47/14F16L9/128F16S3/00F16B7/18F16B7/04F16B7/02
CPCF16L47/14F16L9/128F16S3/00F16B7/182F16B7/0406F16B7/02F16B2200/506F16B2200/406
Inventor 李峰张冬冬陈岩郑宇宙
Owner ARMY ENG UNIV OF PLA