JPH05230894A - Wood frame body for building - Google Patents

Abstract

PURPOSE:To heighten the shearing resistance of a wood frame body for a building. CONSTITUTION:A connecting part between a column 2 and a beam 3 is formed of a first fitting part 6 and a second fitting part 9. Three first plate parts 7 of square plate shape and two first slotted parts 8 are formed at the first fitting part 6. Two second plate parts 10 to be closely fitted into the first slotted parts 8, and three second slotted parts 11 into which the first plate parts 7 are to be closely fitted are formed at the second fitting part 9. The adjacent first and second plate parts 7, 10 are jointed respectively by adhesive to connect the column 2 and the beam 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden frame for a building applied to an opening frame of a wooden house.

[0002]

2. Description of the Related Art In a conventional wooden house, a tenon and a mortise are formed at the ends of columns and beams when a frame body is made up of a pair of columns and beams connected to the upper ends of the columns. Then, the tenon is fitted into the mortise to connect both columns and the beam, and the frame is reinforced by braces to enhance the shear resistance of the frame against a shear load.

[0003]

When the frame body is reinforced by braces, windows and doors cannot be attached to the frame body, so that the frame body cannot be used as an opening frame. Further, in order to use the frame body as an opening frame having a wide opening area, it is necessary to enhance the shear resistance of the frame body against a shear load. An object of the present invention is to provide a wooden frame for a building that has excellent shear resistance and can be used as an opening frame.

[0004]

The wooden frame for a building according to the present invention comprises a pair of pillars which are erected in parallel and a beam whose left and right ends are connected to the upper ends of the pillars. First in the joint
Fitting portions and second fitting portions are respectively formed, and the first fitting portion has n rectangular plate-shaped first plate portions arranged in the front-rear direction and (n-1) first plate portions. 1 notch portion is formed alternately, and the (n-1) second plate portions and the first plate portion, which are tightly fitted in the first notch portion, are formed in the second fitting portion. And n second notches which are fitted in a close-fitting state are alternately formed, and the first plate portion and the second plate portion which are adjacent to each other are joined by an adhesive.

[0005]

The n first plate portions of the first fitting portion formed at the joint portion of the pair of columns and the beams are closely packed in the respective second cut portions of the second fitting portion formed at the joint portion. In a fitted state, each second plate portion of the second fitting portion is fitted into each first cut portion of the first fitting portion to fit the two fitting portions to each other, and to adjoin each other. The first plate portion and the second plate portion are respectively joined with an adhesive to strengthen the combined state of the columns and the beams.

[0006]

As described above, according to the present invention, the joint area between the first fitting portion and the second fitting portion is significantly increased and the joint strength between the columns and the beams is enhanced. Since it is possible to significantly enhance the shear resistance of the frame body and enhance the structural strength of the frame body 1, the frame body can be provided with necessary strength characteristics as an opening frame, and When the body is used as an opening frame, the opening area can be enlarged.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to the drawings. A wooden frame body 1 applied as an opening frame or a wall frame of a wooden building has a pair of vertical columns 2 and 2 arranged in parallel, and a thickness equal to the thickness of the columns 2, and A horizontal beam 3 having left and right ends coupled to the upper end is framed to form a gate shape.

The columns 2 and the beams 3 are each formed of a structural single-plate laminated material in which thin plates are superposed and joined in multiple layers.

The lower ends of both columns 2 are fixed to the base or the beams 12 on the lower floors by fixing members 4, respectively.

Of the connecting portions 5 between the columns 2 and the beams 3, the first fitting portions 6 formed at the left and right ends of the beams 3 have the same thickness and are arranged in the front-rear direction. First rectangular plate-shaped first plate portions 7 and two first cut portions 8 having a cut width equal to the thickness of the first plate portions 7 are alternately formed. The first plate portions 7 and the first cut portions 8 are alternately arranged in the front-rear direction.

Of the joints 5 between the columns 2 and the beams 3, both columns 2
The second fitting portions 9 respectively formed at the upper end portions of the two have the same shape as the shape of the first plate portion 7, are arranged in the front-rear direction, and are fitted into the first cut portions 8 in a close-fitting state. The two second plate portions 10 and the three second cut portions 11 having the same shape as the first cut portion 8 and each of the first plate portions 7 fitted in the close fitting state are alternately arranged. Is formed in.

In the first fitting portion 6 and the second fitting portion 9, each first plate portion 7 is fitted in each second notch portion 11 and both second plate portions 10 are both first notch portions 8. The first plate part 7 and the second plate part 7 and the second plate part 9 adjacent to each other of the fitting parts 6 and 9 are fitted to each other while being fitted into each other.
The plate portion 10 is joined by an adhesive such as a resorcinol resin adhesive or an epoxy resin adhesive applied to the contact surfaces of the fitting portions 6 and 9 before fitting the fitting portions 6 and 9.

In the state where the first fitting portion 6 and the second fitting portion 9 of both joint portions 5 of the frame body 1 are fitted and adhered to each other, both columns 2 and the beam 1 are joined to form the frame body 1. Created.

Next, the operation and effect of the embodiment having the above configuration will be described. In this example, a pair of pillars 2 which are erected in parallel with each other, and a beam 3 whose left and right end portions are respectively connected to the upper end portions of both pillars 2 are connected to each other at both joint portions 5 by a first fitting portion 6 and Second
The first fitting portion 6 has three rectangular plate-shaped first plate portions 7 which are arranged in the front-rear direction and have the same thickness, and the thickness of the first plate portion 7. And two first notch portions 8 having a notch width equal to that of the second notch portion 8 are alternately formed, and the second fitting portion 9 has two second plates fitted in the first notch portion 7 in a close-fitting state. Part 10 and the first
The plate portions 7 are alternately formed with the three second cut portions 11 fitted in the close-fitting state, and the first plate portion 7 and the second plate portion 10 adjacent to each other are joined by an adhesive.

For this reason, the joint area between the first fitting portion 6 and the second fitting portion 9 can be greatly increased, and the joint strength between the columns 2 and the beams 3 can be increased, so that the frame 1 The structural strength of the frame 1 can be enhanced by significantly improving the shear resistance of the frame 1, and the frame 1 can be provided with the necessary strength characteristics as an opening frame. When used as, the opening area can be enlarged.

According to the Building Standards Law, a wall structure having a predetermined shear resistance against a horizontal shear load is a load bearing wall,
The magnitude of shear resistance of the wall structure is defined as the wall magnification of the bearing wall.

As shown in FIG. 4, the wall ratio of the load-bearing wall was such that a load was applied in the horizontal direction to the nip portion of the wall body having a height of h and a length of d and both lower ends fixed to each other. When the horizontal displacement amount of the nub portion of the wall body is a and the shear deformation angle of the wall body is b, the shear stress P / d when the shear deformation angle b = a / h reaches 1/120 radian is 130 (kg /
The numerical value divided by m) is the wall magnification of the bearing wall, and P / d is 13
The load bearing wall magnification when 0 is defined as 1.0, and the shear resistance performance of the frame can be determined by the numerical value of this wall magnification.

Table 2 shows the frame 1 of the present invention formed of a structural veneer laminate having the specifications and physical properties shown in Table 1 when the horizontal displacement of the frame 1 is 1/120 radian. The shear load and the wall magnification of the frame 1 are shown by showing the test results obtained by measuring the interval d1 between the columns 2 and the cross-sectional dimension of the column 2, the cross-sectional dimension of the beam 3 and the length d2 of the frame 1 in three stages. It is a thing.

[0019]

[0020]

According to the test results, the wall magnification of the frame 1 is 2.0 or more, and the frame 1 has excellent shear resistance comparable to that of a load bearing wall having a wall magnification of 2.0 or more. It was confirmed that 1 can be used as an opening frame having a wide opening area.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is an exploded perspective view of the vicinity of a joint portion of a frame body.

FIG. 2 is a perspective view of the vicinity of the joint portion of the frame body.

FIG. 3 is a front view of a frame body.

FIG. 4 is an explanatory diagram illustrating a method of calculating a wall magnification.

FIG. 5 is a front view of a frame body used in a test.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Column 3 Beam 5 Connection part 6 1st fitting part 7 1st plate part 8 1st notch part 9 2nd fitting part 10 1st plate part 11 2nd notch part

Claims (1)

[Claims] 1. A first fitting portion and a second fitting portion at both joint portions of a pair of pillars standing upright in parallel and a beam whose left and right end portions are joined to the upper end portions of both pillars, respectively. And n-square first plate portions arranged in the front-rear direction and (n-1) first cutout portions are alternately formed in the first fitting portion. And the (n-1) second plate portions and the first plate portions, which are respectively formed in the first cutout portions in the close fitting state, are formed in the second fitting portion. The wooden frame for a building, characterized in that the n second cutouts are formed alternately and the adjacent first plate portion and second plate portion are respectively joined by an adhesive agent.