A reinforcement and repair method for beam-column mortise and tenon joints of wooden structures

Abstract

The invention relates to a method for strengthening and repairing a beam-column mortise and tenon joint of a wooden structure, which comprises the following steps: determining the range to be reinforced according to the situation of the tenon-tenon joint of a beam and column of a wooden structure; designing horizontal and vertical hoops; making horizontal and vertical hoops Lift the wooden beam through the jack, cut the mortise of the wooden beam from the mortise of the wooden column and pull it out; install the horizontal and vertical hoops; use multiple elastic threaded fastener components to fasten the horizontal hoops It is connected with the vertical hoop to form a whole working together; remove the jack. The invention not only overcomes the problem that the rigidity of the mortise and tenon joints decreases in the long-term natural environment of the wooden structure building, but also effectively avoids the overhaul and repair of the log structure, does not need to replace the beam and column components, and prevents damage to the log structure during the repair construction process. damage, the seismic performance of the wooden structure is improved, the energy dissipation capacity of the nodes is improved, the construction is simple, the cost is low, the coverage is wide, and the reinforcement effect is remarkable.

Description

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

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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