CN102251584A - A wood structure mortise and tenon joint reinforced by L-shaped angle steel - Google Patents

Abstract

The invention provides a wood structure mortise and tenon joint reinforced by L-shaped angle steel, which comprises a wood column, a wood beam and mortise and tenon joints, wherein the wood column and the wood beam are connected through the mortise and tenon joints, L-shaped angle steel playing a reinforcing role is arranged on an included angle formed by the connection of the wood column and the wood beam, and two ends of the L-shaped angle steel are respectively fixed on the wood column and the wood beam through bolts. The tenon-and-mortise joint reinforced by the L-shaped angle steel improves the bearing capacity and obviously increases the energy consumption capacity; the product can be used for emergency reinforcement of the tenon-and-mortise joint of the timber structure after earthquake, and also can be used for seismic reinforcement of a common timber structure house.

Description

A wood structure mortise and tenon joint reinforced by L-shaped angle steel

technical field

The invention relates to a building structure, in particular to a wood structure mortise and tenon joint reinforced with L-shaped angle steel, which is mainly (but not exclusively) used for emergency reinforcement of wood structure tenon and tenon joints after earthquakes, and can also be used for general wood structures Seismic strengthening of houses.

Background technique

my country's wood structure buildings have a long history and are widely distributed. From the original wooden house in ancient times to today's modern wooden structure, the form of wooden structure is constantly changing. However, there are still a large number of wood frame load-bearing buildings such as wood structures, brick-wood frame structures, and civil-wood structures in vast rural areas. Most of these buildings have not undergone formal seismic design, and often cause a large number of casualties and economic property losses during earthquakes. Especially in the southwest and northwest earthquake-intensive areas, there are still a large number of large-scale and dangerous timber frame load-bearing buildings, which seriously threaten the safety of people's lives and property, and are in urgent need of reinforcement and repair.

From the damage forms of wooden structures in previous earthquakes, it can be seen that the earthquake damage is mainly divided into: load-bearing member damage, node damage, maintenance wall damage, roof damage, overall dumping, etc. Among them, node damage is the most common and causes the greatest harm. The joint forms in traditional wood structures are mainly mortise and tenon joints, which often suffer from tenon pulling, tenon breaking and mortise damage during earthquakes. Therefore, it is particularly important to strengthen the mortise and tenon joints in time after the earthquake.

Traditional wood structure joint reinforcement methods mainly include U-shaped iron hoop reinforcement, nail reinforcement, FRP reinforcement, etc. Most of these reinforcement methods start from the perspective of increasing the stiffness of the joints, limiting the relative displacement between the mortise and tenon joints, thus avoiding damage forms such as tenon pulling and falling beams. Although the traditional reinforcement method is simple and convenient, as the overall stiffness of the wooden structure increases, the earthquake force it receives will also increase, and these reinforcement methods limit the relative displacement between the mortise and tenon, and the energy dissipation capacity of the wooden structure also increases. dropped.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a wood structure mortise and tenon joint reinforced with L-shaped angle steel. The reinforced tenon and tenon joint not only improves the bearing capacity, but also increases the energy dissipation capacity, making the wood The seismic performance of the structure is better.

The technical solution adopted in the present invention is: a wood structure mortise and tenon joint reinforced by L-shaped angle steel, including wooden columns, wooden beams and tenon and tenon joints, the wooden columns and wooden beams are connected by mortise and tenon joints, The angle formed by connecting with the wooden beam is provided with an L-shaped angle steel for reinforcement, and the two ends of the L-shaped angle steel are respectively fixed on the wooden column and the wooden beam by bolts.

Preferably, an L-shaped angle steel is provided on the upper or lower corner formed by the connection of the wooden column and the wooden beam.

Preferably, an L-shaped angle steel is provided on the upper corner and the lower corner formed by the connection of the wooden column and the wooden beam.

Preferably, the material of the L-shaped angle steel is steel with low yield point or energy-consuming steel.

Preferably, the thickness of the L-shaped angle steel is 6-10 mm.

Preferably, the width of the L-shaped angle steel is 1/3-1/2 of the width of the wooden beam.

Preferably, the length of the L-shaped angle steel is 200-300 mm.

Preferably, the diameter of the bolt is greater than or equal to 10mm.

The two ends of the L-shaped angle steel in the present invention are closely attached to the wooden column and the wooden beam respectively, and are tightly connected by bolts.

The beneficial effect of the present invention is that: the mortise and tenon joint reinforced by L-shaped angle steel in the present invention not only improves the bearing capacity, but also significantly increases the energy dissipation capacity; It is used in the seismic reinforcement of ordinary wooden structures.

Description of drawings

The accompanying drawing is a structural schematic diagram of a wood structure mortise and tenon joint reinforced by L-shaped angle steel of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in further detail:

As shown in the accompanying drawings, a wood structure mortise and tenon joint reinforced by L-shaped angle steel includes a wooden column 1, a wooden beam 2 and a tenon and tenon joint 3, and the wooden column 1 and the wooden beam 2 are connected by a tenon and tenon joint 3. The angle formed by the connection of the wooden column 1 and the wooden beam 2 is provided with an L-shaped angle steel 4 for reinforcement, and both ends of the L-shaped angle steel 4 are respectively fixed on the wooden column 1 and the wooden beam 2 by bolts 5 .

The L-shaped angle steel 4 can be prefabricated in a factory, and holes are drilled according to the diameter of the bolt 5, which is a standard part.

In order to improve the bearing capacity and energy dissipation capacity of the mortise and tenon joints, the shape and size of the L-shaped angle steel must meet certain requirements to achieve the expected reinforcement effect. The length of the L-shaped angle steel is 200-300mm, the thickness of the L-shaped angle steel is 6-10mm, and the width of the L-shaped angle steel is 1/3-1/2 of the width of the wooden beam. In order to achieve a better anti-seismic effect, the material of the L-shaped angle steel can use energy-consuming materials, which can be prefabricated in the factory. The diameter and number of bolts should be calculated and determined according to the actual mortise and tenon joint force, and should meet the requirements of relevant national standards.

Claims (8)

1. A wood structure mortise and tenon joint reinforced with L-shaped angle steel, including a wooden column (1), a wooden beam (2) and a mortise and tenon joint (3), and the wooden column (1) and wooden beam (2) are connected by tenon The 90 joint (3) connection is characterized in that: an L-shaped angle steel (4) for reinforcement is provided on the angle formed by the connection between the wooden column (1) and the wooden beam (2), and the L-shaped angle steel ( 4) The two ends are respectively fixed on the wooden column (1) and the wooden beam (2) by bolts (5). 2. A wood structure mortise and tenon joint reinforced with L-shaped angle steel according to claim 1, characterized in that: the upper or lower corner formed by the connection of the wooden column (1) and wooden beam (2) is provided with L Type angle steel (4). 3. A wood structure mortise and tenon joint reinforced with L-shaped angle steel according to claim 1, characterized in that: the upper corner and the lower corner formed by the connection of the wooden column (1) and the wooden beam (2) are simultaneously provided with L-shaped angle steel (4). 4. A wood structure mortise and tenon joint reinforced with L-shaped angle steel according to claim 1, characterized in that: the material of the L-shaped angle steel (4) is steel with a low yield point or energy-consuming steel. 5. A wood structure mortise and tenon joint reinforced with L-shaped angle steel according to claim 1, characterized in that: the thickness of the L-shaped angle steel (4) is 6-10mm. 6. A wood structure mortise and tenon joint reinforced with L-shaped angle steel according to claim 1, characterized in that: the width of the L-shaped angle steel (4) is 1/3-1/2 of the width of the wooden beam 2. 7. A wood structure mortise and tenon joint reinforced with L-shaped angle steel according to claim 1, characterized in that: the length of the L-shaped angle steel (4) is 200-300 mm. 8. A wood structure mortise and tenon joint reinforced with L-shaped angle steel according to claim 1, characterized in that: the diameter of the bolt (5) is greater than or equal to 10 mm.

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