Wood structure buckling restrained brace and manufacturing method thereof

Abstract

The invention discloses a wood structure buckling restrained brace, which comprises a first wood component, a second wood component, a shape memory alloy core material, a plurality of shape memory alloy screw rods and an anchoring device. The two wood components are attached together, through grooves are formed in the attached parts in the wood vertical grain direction, and the shape memory alloycore material is embedded in the through grooves. The shape memory alloy screw rods penetrate through the two wood components in the direction perpendicular to the wood vertical grain, and after stretching-drawing, the two ends of the shape memory alloy screw rods are fixed through the anchoring device. The invention further discloses a manufacturing method of the wood structure buckling restrained brace, and the manufacturing method comprises four steps. The buckling restrained brace is well matched with a wood structure; under the joint effect of the prestress of the screw rods and a shape memory alloy, the self-reset performance of the brace is significantly improved; and through application of the prestress, it can be ensured that the two wood components make effective contact with theembedded core material, the wood components participate in force bearing through the friction effect, and thus the bearing capacity of the brace is enhanced.

Description

technical field [0001] The invention relates to a buckling restrained brace of a heavy wooden structure and a manufacturing method thereof, and belongs to the technical field of anti-side and self-resetting performance research of the buckling restrained brace of a heavy wooden structure. Background technique [0002] Heavy-duty timber structures refer to structural systems that use large-scale timber components as the main load-bearing components. The exposed timber character of the heavy timber structure lends it a unique architectural aesthetic. In addition to the advantages of low carbon and environmental protection of light wood structure, heavy wood structure has better fire resistance and durability due to its larger component size. However, such structural systems have limited lateral stiffness and bearing capacity, and usually need to be used together with buckling-restrained braces. [0003] In the prior art, steel-wood buckling-restrained bracing is one of the s...

AI Technical Summary

Problems solved by technology

[0004] 1. The support has almost no self-resetting function: when the embedded steel core plate experiences overall instability under compression or yield under tension, the support usually produces obvious unrecoverable deformation

[0005] 2. The wooden components only play the role of constraining the embedded core board, and there is almost no force along the direction of the grain, so the utilization rate of strength is limited

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