Steel and wood mixed connecting structure

Abstract

The invention discloses a steel and wood mixed connecting structure. The structure comprises a wood plate and a steel component. A groove hole is formed in the side, different from the steel component, of the wood plate, the depth of the groove hole is smaller than the thickness of the wood plate, the steel component and the wood plate are attached through tapping screws, the tapping screws penetrate through reserved holes in the steel component to be anchored into the wood plate, the tails extend into the reserved groove hole of the wood plate, and mortar is poured into the groove hole. The groove hole is reserved in the wood plate, the tails of the tapping screws extend into the reserved groove hole of the wood plate, mortar is filled in, the screws can be subjected to end anchorage, thescrew connection anti-shear bearing capacity and rigidity can be improved, the phenomenon that the screws are pulled out due to too large slippage deforming can be avoided, meanwhile, the screw tip wood stress area can be increased, and cracking and local crushing can be prevented.

Description

technical field [0001] The invention belongs to a connection structure, in particular to a steel-wood hybrid connection structure. Background technique [0002] Since the emergence of steel-concrete composite beams in the 1920s, traditional steel-concrete composite floors have been widely used in multi-story buildings. However, the heavy weight of concrete increases the total weight of the building by about 50%. Under the action of an earthquake, it causes a large lateral force, which is not conducive to the earthquake resistance of the structure. In addition, pouring concrete on site and maintaining it will greatly increase the construction time and cost, and will easily pollute the environment. As an environmentally friendly green renewable building material, wood has been widely focused. In the past two decades, more and more researches have focused on the application of wood in multi-story buildings, but the strength of pure wood structures is insufficient, and fire pro...

AI Technical Summary

Problems solved by technology

However, the traditional connection method of drilling self-tapping screws into the vertical wood surface has the following problems: (1) The drilling depth of self-tapping screws is limited by the thickness of the wood board, and the drilling depth of self-tapping screws has a great influence on the strength of the connection. When it is thin, it cannot meet the bearing capacity requirements; (2) The shear stiffness of the self-tapping screw connection is low, and when a large slip occurs, the screw is easy to be pulled out; (3) When the steel beam is a commonly used equilateral H-shaped steel When it is blocked by the lower flange of the H-shaped steel, the operating space is limited. When the beam height is low, it is not easy to construct

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