A steel-wood hybrid connection structure

Abstract

The invention discloses a steel-wood mixed connection structure, which comprises a wood board and a steel member. A slot hole is arranged on the side of the wood board different from the steel member. The depth of the slot hole is smaller than the thickness of the wood board. The tapping screw is anchored into the wood board through the reserved hole of the steel member, and the tail extends into the reserved slot hole of the wood board, and the slot hole is filled with mortar. The invention reserves a slot hole in the wood board, and the tail of the self-tapping screw extends into the reserved slot hole of the wood board, and pours mortar into it, which can play a kind of end anchoring effect on the screw, and improve the shear bearing capacity and rigidity of the screw connection. Prevent the screw from being pulled out due to excessive sliding deformation, and at the same time expand the stress area of ​​the wood at the tip of the screw to prevent splitting and local crushing.

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

Images