CN201953084U - Wood structure node movable bolt hole earthquake-proof reinforced flat iron - Google Patents

Abstract

The utility model relates to an anti-seismic reinforcement flat iron for movable bolt holes of wooden structure nodes. The bolt holes are changed from circular holes to rectangular holes. When the earthquake force is not strong, the mortise can be in the mortise or through the square in the direction of the vertical column. There is a certain amount of slippage to consume seismic energy; when the earthquake force is large, the flat iron can effectively prevent the mortise from being pulled out from the mortise or the slippage of the piercing square in the direction of the vertical column is large, thus ensuring the safety of the entire structure. This kind of anti-seismic reinforcement flat iron for movable bolt holes of wooden structure joints can not only allow the tenon to have a certain amount of slippage in the mortise or the piercing in the direction of the vertical column to consume earthquake energy, but also prevent the tenon from being pulled out from the mortise or piercing the square. The slippage is too large and the structure is simple.

Description

Anti-seismic reinforcement of flat iron with movable bolt holes in wooden structure nodes

technical field

The utility model relates to an anti-seismic reinforced flat iron for movable bolt holes of wooden structure nodes, which belongs to the technical field of reinforcement and transformation of inherent buildings.

Background technique

The components of ancient Chinese wooden structure buildings and modern rural wooden structure buildings are generally connected by mortise and tenon, and the wooden structure mortise and tenon is composed of tenon and mortise. The mortise and tenon joint is a semi-rigid joint. When the load is applied, friction and normal stress will be generated on the two sides of the tenon and the mortise of the mortise and tenon joint. As the load continues to increase, the tenon will move from the mortise to There is a certain degree of pulling out, which can consume a certain amount of seismic energy. In addition, mortise and tenon has "flexible" connection characteristics, which can reduce the overall stiffness of the structure, increase the ductility of the entire structure, reduce the inertia force of the entire structure during earthquake vibrations, and have good seismic performance. However, pulling out the mortise from the mortise during an earthquake will cause great damage to the structure. For example, during the earthquake in Lijiang, Yunnan Province on February 3, 1996, the wooden structure house was bumped up and down, left and right, and back and forth. The joints not only bear horizontal force, but also bear tension. Due to the torsion effect, it is easy to have tenon off at the joint. Most of the houses that collapsed in the Lijiang earthquake were caused by the dismemberment of the wooden frame due to the pulling out of tenons. Therefore, mortise and tenon joints have good seismic performance, which is mainly reflected in their "flexibility". From the survey of rural wooden houses in Yunnan Province, it can be seen that the existing reinforced flat iron bolt holes in rural wooden houses are circular holes, slightly larger than the diameter of the bolts. The relative slip of the mortise and tenon joints is limited by the flat iron, so the good seismic performance of the mortise and tenon joints cannot be exerted. In addition, under the beams of Chuandou wood structure houses, a square wood is used to pass through all the columns, commonly known as Chuanfang. When an earthquake occurs, the slip along the vertical direction of the wooden column can also consume a certain amount of seismic energy, but the traditional reinforced flat iron also limits the occurrence of this slip.

Contents of the invention

In order to solve the limitations of the existing flat iron for reinforcement, the utility model provides a kind of anti-seismic reinforcement flat iron for the movable bolt hole of the wooden structure node, which can not only make the mortise in the mortise or the piercing in the direction of the vertical column have a certain slippage during the earthquake. The amount of displacement can be used to consume seismic energy, and it can also limit the excessive slippage of the mortise and mortise joints when they are pulled out from the mortise or through the square in the direction of the vertical column.

The technical solution adopted by the utility model to solve the technical problems is: the bolt hole of the traditional flat iron for reinforcement is changed from a circular hole to a rectangular hole.

When the earthquake force is not strong, the mortise can slip in the mortise or through the square in the direction of the vertical column, so that a certain amount of seismic energy can be consumed by relying on the mortise and tenon joints and through the square; The sliding amount in the mouth or through the square in the vertical direction of the column is relatively large, so that the bolt is close to the edge of the rectangular bolt hole, and the flat iron limits the continuous increase of the sliding amount, which can effectively prevent the tenon from coming out of the mortise or wearing out. Square slip is too large.

The beneficial effect of the utility model is that it can not only allow the tenon to have a certain amount of slip in the mortise or wear the square in the direction of the vertical column to consume earthquake energy, but also prevent the tenon from being pulled out from the mortise or the slip of the square to be too large. Large and simple in construction.

Below in conjunction with accompanying drawing and embodiment the utility model is further described, but the structure of the utility model is not limited to what is shown in the accompanying drawing.

Description of drawings

Fig. 1 is a three-dimensional diagram of the utility model for reinforcing tenon and tenon joints on both sides.

Fig. 2 is a three-dimensional view of the utility model for strengthening the mortise and tenon joints on one side.

Fig. 3 is a three-dimensional diagram of the utility model for reinforcing the piercing square.

Detailed ways

Among Fig. 1 to Fig. 3, wooden post 1, wooden beam 2, piercing square 3, the bolt hole is the bolt 4 of circular hole, and the bolt hole is the bolt 5 of movable hole, is used for reinforcing the column both sides to have tenon " one " font flat iron 6, is used to strengthen " T " font iron 7 that one side of the column has tenons, and is used for strengthening the " ten " font flat iron 8 that passes through the workshop.

In Fig. 1, there are tenons on both sides of the wooden column 1. In a wooden structure, such a column is generally a central column, and beams are connected to it on both sides of the column. The node of this form is reinforced with " one " font flat iron 6 as shown in the figure, each uses a flat iron on both sides of the node, and the bolt holes on the flat iron are all movable bolt holes. When an earthquake occurs, the mortise on both sides of the column can slide to a certain extent along the mortise to consume the seismic energy. When the amount of slippage is large, the flat iron will limit the further expansion of the slippage, which can effectively prevent the tenon from coming off. At the same time, the flat iron also improves the bending and shearing resistance of the mortise and tenon joints to a certain extent, and then strengthens the semi-rigidity of the joints to a certain extent.

In Fig. 2, the wooden column 1 has a tenon on one side. In a wooden structure, this kind of column is generally a side column, and only one side of the column is connected to it by a beam. This type of node is reinforced with a "T"-shaped flat iron 7 as shown in the figure, and a flat iron is used on both sides of the node. The bolt holes of the flat iron on the column are circular holes, and the bolt holes of the flat iron on the beam are movable. Bolt hole. When an earthquake occurs, the tenon and tenon of the beam can slide to a certain extent along the mortise to consume the seismic energy. When the amount of slippage is large, the flat iron will limit the further increase of the slippage, which can effectively prevent the tenon from falling off. At the same time, the flat iron The bending resistance and shear resistance of the mortise and tenon joints are also improved to a certain extent, and then the semi-rigidity of the joints is strengthened to a certain extent.

In Figure 3, the wooden column is pierced by a piercing square. The node of this form is reinforced with " ten " shape flat iron 8 as shown in the figure, respectively uses a flat iron on both sides of the node. The bolt holes of the flat iron on the column are circular holes, and the bolt holes of the flat iron on the piercing square are movable bolt holes. When an earthquake occurs, there will be a certain amount of slippage in the direction of the vertical column to consume the seismic energy. When the amount of slippage is large, the flat iron will limit the continued increase of the amount of slippage, thereby ensuring the safety of the entire structure.

Claims (1)

1. A kind of wooden structure node movable bolt hole anti-seismic reinforcement flat iron is characterized in that: the bolt hole on this flat iron is a rectangular hole.

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