JP2699795B2 - Structure of beam using laminated wood - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam structure using laminated wood.

[0002]

2. Description of the Related Art Conventionally, wood has been a fundamental material in the field of construction, and its usefulness remains unchanged. In recent years, the technology of large-sized laminated wood has been advanced and improved, and construction methods and design techniques have been established to improve the fire resistance, earthquake resistance, and the like, which are the weak points of wood. In addition, diligent studies are being made on realizing various architectural forms while utilizing the characteristics of wood.

[0003] However, in the conventional large-sized building using laminated wood, there are many arch-shaped buildings such as exercise facilities and domes, and there are few examples of large buildings such as general office buildings.
Conventionally, the connection between the column and the column and the connection between the column and the beam are considered as pin joints, and the column is a simple column or a simple beam, and the directionality is strong due to the wood material. , It is impossible to cast into the formwork like reinforced concrete and integrated with other related structural materials, it is difficult to integrate with each other by welding like steel frame, port fastening is The main reason is that it is technically difficult to make a rigid frame structure with the required structural strength, because even if possible, it is impossible to apply torque that can be expected for friction welding, etc. it is conceivable that.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention
It is an object of the present invention to solve the above-mentioned problems and to provide a beam for constructing a large-sized ramen structure having a sufficient structural strength by using large-section wood made of laminated wood.

[0005]

Means for Solving the Problems In order to solve the above problems, the structure of a beam using laminated wood according to the present invention is as follows.
At the both ends of the beam, tie-down hardware made of lip-shaped grooved steel, channel steel or hat-shaped steel, while arranging the concave portion of the tie-down metal toward the tip end of the beam, and at both ends of the beam, Positioned in front of the fastening hardware, a fastening recess for the column is formed continuously with the recess of the fastening hardware, and one or more metal flat bars are formed in the beam in the fastening hardware. Each of the beams is welded to the back surface and buried along the entire length of the beam.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view (including a partial internal structure) of a typical example of a beam according to the present invention. Tightening hardware 2 is arranged at both ends of the beam 1 and a tip of the beam 1 is provided. A fastening recess 3 for fastening the beam 1 to the column is formed on the front surface of the fastening hardware 2. One or more metal flat bars 4 are welded to the back surface of the fastening hardware 2 and are embedded in the beam 1 so as to extend in the length direction of the beam. As a result, the structural strength of the entire beam 1 can be further increased.

The metal fittings 2 are arranged on the beam 1 so that a grout material, which will be described later, can be filled in a concave portion 3 for binding at the front end of the beam 1 on the front surface thereof. Therefore, in general, the lower surface of the fastening hardware 2 is buried in the beam 1, but the upper surface of the fastening hardware 2 is substantially at the same height as the upper surface of the beam 1. However, the upper surface of the metal fitting 2 may also be buried in the beam 1, and the grout material may be filled from a hole provided in an appropriate place of the beam 1. Both side surfaces of the fastening hardware 2 are generally buried in the beam 1. The shape and material of the fastening metal 2
The grout material is filled and hardened to provide sufficient structural strength at the joint between the beam 1 and the column. Examples of the grooved steel with a lip as shown in FIG. And hat-shaped steel. When using such a mold steel, the recesses are directed toward the tip of the beam 1 so that the grout material can be filled and held inside. Thereby, the beam 1 after curing of the grout material
The binding strength between the column and the column can be significantly improved.

As shown in FIG. 2, which is a cross-sectional view taken along the line AA of FIG. 1, the laminated timber is assembled by joining a plurality of wood members at a large number of joining surfaces 5; Is preferably buried along a horizontal joint surface 5 located at an appropriate position. However, the joining surface in which the flat bar 4 is embedded does not necessarily have to be horizontal, and may be inclined or substantially vertical.

The flat bar 4 is made of a metal having the required strength, but is preferably made of steel. In addition, the width of the flat bar 4 is generally equal to the width of the binding hardware 2, but may be larger or smaller than the width of the binding hardware 2 in some cases.

The flat bar 4 has a length sufficient to give a required strength substantially over the entire length of the beam 1, and also has a tie-down hardware 3 disposed at the other end of the beam 1, and is welded to the back surface thereof. You.

When the metal fitting 3 is not arranged at the other end of the beam 1, the length of the flat bar 4 is generally set to reach the outer surface of the other end of the beam 1. The other end of the bar 4 may be buried in the beam 1 or may be slightly exposed from the beam 1.

Next, a method of constructing a large-sized ramen structure using the beam of the present invention will be described.
The beam 1 is arbitrarily tied to the upper part of the floor column 6 arbitrarily. In FIG. 3, the relationship between the column 6 and the beam 1 is shown in detail only for the right beam 1, but the upper and lower beams 1 or the left beam (not shown) are similarly tied. It will be understood.

A required number of beams 1 are erected at predetermined positions of columns 6 that have been laid in advance, and the positions, angles, and the like of these columns 6 and beams 1 are adjusted, and then the whole is temporarily fixed. Next, a portion of each beam 1 from the binding recess 3 to the column 6 is filled with a curable grout material, and left to cure for a predetermined period to cure the beam 1.
And the column 6 can be rigidly connected to each other so as to have sufficient structural strength. The filling state of grout material is
This is shown in FIG. 3 as a number of points. In this case, an appropriate number of studs 7 are welded to the front end side of the beam 1 of the binding hardware 3, and if necessary, the studs 9 are fitted into the column heads 8 of the columns 6, and the studs 10 are also provided on the outer surface of the studs 9. Is welded, the beam 1 and the column 6 can be more firmly connected. The number of these studs is appropriately determined according to the stress to be transmitted.

When the grout material is injected, a sealing material is used to seal the contact portion and the like so that the grout material does not leak from the contact portion between the beam 1 and the column 6 and is sufficiently filled with the grout material. After the grout material has been hardened, the seal material is removed, and if aesthetically necessary, traces of the seal are erased. The grout material may be injected for each floor or after the completion of the installation of the beams 1 and the columns 6 on all floors.

By using the beam of the present invention, it is possible to transmit a sufficient stress between the beam and the column, so that a rigid frame structure is constructed by using a large-section wood made of laminated wood. It is possible to build a large-scale wooden building of a high-rise floor having a high structural capacity (however, the limit of the number of floors of a wooden building is three floors under current Japanese regulations).

[0017]

According to the present invention, the following effects can be obtained.

It is possible to construct a ramen structure having a sufficient structural strength, and a large wooden building can be constructed.

Since glued wood can be used for a large wooden building, the material can be effectively used.

Since the connection between the beam and the column is strong, the degree of freedom of the building form is large, and various building forms using wood can be realized.

The beam of the present invention can be easily and inexpensively manufactured in a glued wood factory, and the handling and transportation from the glued wood factory to the construction site can be performed simply and similarly to general beams.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a typical example of a beam of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a diagram illustrating a method for constructing a large-sized ramen structure using the beam of the present invention.

[Explanation of symbols]

1 ... beam, 2 ... fastening metal, 3 ... fastening recess, 4 ...
... flat bar, 5 ... joint surface, 6 ... pillar, 7 ... stud, 8 ... capital, 9 ... capital, 10 ... stud

Claims (1)

(57) [Claims] In a beam structure using laminated wood,
At the both ends of the beam, tie-down hardware made of grooved steel with a lip, channel steel or hat-type steel are arranged, with the recesses of the tie-down hardware facing the tip end of the beam, and the tie-down hardware of the beam. The front side of the fastening recess with the column is formed continuously with the recess of the fastening hardware, and one or more metal flat bars are welded to the back surface of the fastening hardware in the beam, respectively. A beam structure using laminated timber, characterized by being buried along the entire length of the beam.