Double-toothed-connection-component inner double-walled pipe combination member and manufacturing method thereof

Abstract

The present invention discloses a double-toothed-connection-component inner double-walled pipe combination member and a manufacturing method thereof. The double-toothed-connection-component inner double-walled pipe combination member comprises an outer pipe and an inner pipe, wherein concrete is filled between the outer pipe and the inner pipe, and toothed connection components are formed on the inner wall of the outer pipe and the outer wall of the inner pipe.

Description

technical field [0001] The invention relates to the technical field of building components, in particular to a double-wall pipe composite component with a double-thread connector and a manufacturing method thereof. Background technique [0002] Double-wall pipe composite member is a new type of structural member. Due to its reasonable force and convenient and efficient construction, it has been more and more used in civil industrial buildings and bridge engineering structures in recent years. This component is composed of an outer tube, an inner tube and concrete poured in the interlayer or inside of the two tubes. The inner and outer pipes can be FRP pipes or steel pipes of various materials, but at least one of the two pipes is steel pipes, so the structural forms of the inner and outer pipes and concrete combinations include double-wall steel pipe hollow or solid combination, outer FRP pipe-inner steel pipe hollow Or solid combination structure and outer steel pipe-inner...

AI Technical Summary

Problems solved by technology

[0004] In addition, since the inner and outer pipes are generally erected as formwork in the manufacture of double-wall composite members, the quality of interlayer concrete filling is difficult to control. In addition, during the setting and hardening process of concrete, the concrete itself will shrink, and the bonding force between the pipe wall and the concrete interface It is easy to be weakened or even eliminated, causing the concrete to be voided in the pipe, that is, debonding and shear slippage at the interface between the concrete and the pipe wall

Under the action of bending moment load, especially under the action of earthquake load, simply relying on the bonding force between the pipe wall and the concrete to bear the interface shear force, there will often be a large relative slip between the concrete and the pipe wall , so that the FRP pipe or steel pipe and concrete cannot work together, reducing the overall performance of the component

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