Reinforcement and repair device for beam-column mortise and tenon joints of wooden structures

Abstract

The invention relates to a device for reinforcing and repairing tenon-tenon joints of wooden beams and columns, which includes a horizontal hoop for hooping the mortise end of a wooden beam and a vertical hoop for hooping the mortise section of a wooden column. The two horizontal hoops are One end of the hoop plate facing the vertical hoop is welded with a flange plate, and the hoop plate is welded with a channel-shaped steel plate on the side of the vertical hoop facing the horizontal hoop. holes corresponding to the through holes on the flange plate, and the channel steel plate is connected with the flange plate after passing through corresponding holes and through holes through a plurality of elastic threaded fastener components. The device for strengthening and repairing the mortise and tenon joints of wooden structure beams and columns of the present invention not only overcomes the problem that the rigidity of the tenon and tenon joints decreases in the long-term natural environment of wooden structures, but also avoids the damage to the log structure during the repairing construction process, and at the same time improves The energy dissipation capacity of mortise and tenon joints under earthquake action, the construction is simple, the cost is low, and the reinforcement effect is remarkable.

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...

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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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