Reinforcement and repair device for mortise-tenon joints of beams and columns of timber structure

Abstract

The invention relates to a reinforcement and repair device for mortise-tenon joints of beams and columns of a timber structure. The reinforcement and repair device comprises a transverse hold hoop and a vertical hold hoop, wherein the transverse hold hoop is used for hooping the tenon end of a timber beam, and the vertical hold hoop is used for hooping the mortise segment of a timber column; one end, facing to the vertical hold hoop, of each of two hold hoop plates of the transverse hold hoop is welded with a flange plate, and one side hold hoop plate, facing to the transverse hold hoop, of the vertical hold hoop is welded with a channel steel plate; a plurality of holes corresponding to though holes in the flange plates are formed in the channel steel plate, and the channel steel plate penetrates through the corresponding holes and through holes through a plurality of elastic threaded fasteners and then is connected with the flange plates. The reinforcement and repair device solves the problem that the stiffness of the mortise-tenon joints of timber-framed buildings in the long-term natural environment is reduced, also avoids the damage to log timber structures in the repair construction process, and meanwhile improves the energy dissipation capacity of the mortise-tenon joints under earthquake action. The reinforcement and repair device has the advantages of being easy and convenient to construct, low in cost and significant in reinforcement effect.

Description

technical field [0001] The invention relates to a reinforcing and repairing device for beam-column mortise and tenon joints of a wooden structure. Background technique [0002] As an ancient structural form, wooden structure is widely used in most areas of our country. As a building material, wood has the characteristics of convenient materials, simple construction process and fast construction speed. However, due to the characteristics of the wood itself, after a period of use, the structural performance will degrade, especially when the wood has congenital defects, such as knots, insects, and decay, the performance degradation will become more obvious. Among these performance degradations, the reduction of bearing capacity of timber structure mortise and tenon joints is a typical type of degradation. The common failure types of mortise and tenon joints, such as decay, cracking, and tenon pulling, will seriously affect the bearing performance of the joints, especially the...

AI Technical Summary

Problems solved by technology

These methods can improve the bearing capacity of nodes to a certain extent, but there are still shortcomings in these methods, such as: the iron nail fixing method itself will cause damage to the structure; the additional support method does not significantly improve the shear bearing capacity of nodes; The steel method has high requirements for wooden nails, and the manufacturing process is complicated; the beam replacement method destroys the cultural relics and historical value of the wooden structure itself; the FRP reinforcement method does not significantly increase the bearing capacity of the wooden structure under the premise of cracking, and reduces the structural ductility coefficient , FRP requires grinding treatment on the surface of the object, which makes the construction complicated, and the failure type of the component strengthened by FRP is brittle failure, which is not conducive to the formation of the performance design principle of "strong node and weak component", and the seismic performance of the node will be reduced

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