Shape memory alloy reinforced wood structure beam column bolt joint and manufacturing method thereof

Abstract

The invention relates to a shape memory alloy reinforced wood structure beam column bolt joint. Wood components are rectangular, and the length direction of the wood components is the wood grain texture direction; a reinforcing part of a first wood component is located at an end, and a reinforcing part of a second wood component is located at an abdomen position. The reinforcing parts are formed through the following operation: at least one steel filling plate groove parallel to the length direction is formed in the middle of each wood components in the thickness direction, a plurality of boltholes are pre-drilled in the corresponding positions of the wood components and steel filling plates in the thickness direction, the steel filling plates are inserted into the steel filling plate grooves, and all bolts are inserted into the corresponding bolt holes; a plurality of bar holes are pre-drilled in the wood components in the height direction of the sections, the positions of the bar holes do not interfere with the bolt holes, and all memory alloy bars are inserted into the corresponding bar holes; and the first wood component and the second wood component are vertically connected through the respective reinforcing parts. According to the invention, the wood cross grain splitting damage of a bolt joint area is effectively prevented, the development of unrecoverable deformation in the wood cross grain direction of the joint area can be remarkably reduced, and the self-resetting performance of the joint is improved.

Description

technical field [0001] The invention relates to a beam-column bolt joint of a wood structure in modern wood structure reinforcement and transformation, in particular to a beam-column bolt joint of a wood structure reinforced by a shape memory alloy. Background technique [0002] With my country's vigorous promotion of green buildings and prefabricated buildings, modern wood structures have ushered in new opportunities for development. This type of structure has many advantages such as comfortable and livable, excellent seismic performance and high degree of assembly, so it has attracted much attention. Bolted steel fill plate joint is one of the commonly used member connection forms in modern wood structures, which has many advantages such as beautiful appearance, simple manufacture and convenient installation. [0003] Under the joint action of bending moment and shear force, the bolted steel filled plate joints are prone to wood cross-grain splitting damage, and the direc...

AI Technical Summary

Problems solved by technology

[0003] Under the combined action of bending moment and shear force, bolted steel filled plate joints are prone to wood cross-grain splitting damage, and the direction of wood cross-grain in the joint area will undergo obvious unrecoverable deformation

This makes the flexural bearing capacity and deformation capacity of such joints not fully utilized, and also weakens the performance of the member under normal use

Commonly used reinforcement effects (such as self-tapping screw reinforcement method and carbon fiber cloth reinforcement method) cannot reduce the influence of unrecoverable deformation in the transverse direction of wood, and cannot achieve self-resetting effect

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