JPH10338968A - Joint metal for woody framework member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the aseismicity of a wooden building by increasing the tensile strength of a wooden framework by a joint metal. SOLUTION: The end section of the lower end section of a column 5 is joined with a sill 4 by the joint metal. The joint metal is combined with the lower end section of the column 5 by pins 6 inserted into a pinhole 5a penetrated and formed to the lower end section of the column 5 towards the direction orthogonal to the axial direction of the column 5 while a pipe tenon member 11 united even with the sill 4 and made of a metal and a ring 12 fitted around the lower end section of the column 5 and made of the metal are joined integrally by a bottom plate 13 and combined at that time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining bracket used for joining an end surface of an end portion of a wooden frame member such as a pillar to another wooden frame member such as a base. .

[0002]

2. Description of the Related Art Conventionally, as a metal fitting used for joining an end surface of an end portion of a wooden frame member such as a pillar to another wooden frame member such as a base, for example, Utility Model Registration No. 3
The one disclosed in Japanese Utility Model Registration No. 008178 is known.

[0003] As shown in FIG. 5, the conventional joint fitting is formed by combining a pipe-shaped tenon member 1 and a separate flat plate-shaped base plate 2.
Has a plurality of pin holes 1a penetratingly formed in a direction perpendicular to the axial direction on the side surface thereof, and having an interval in the axial direction, and having an annular flange 1b at an intermediate portion, Also, the base plate 2 allows insertion of a portion other than the flange 1b of the tenon member 1, but the flange 1b has a tenon hole 2a for a tenon member to be hooked at the center,
Fixing through holes 2b for inserting anchor bolts and nails for fixing the base plate 2 are provided on both sides of the tenon member through hole 2a.

According to such a joint, as shown in FIG. 6, a mortise 4a extending in the vertical direction is formed in a base 4 horizontally fixed on a foundation 3, and a lower end of a pillar 5 is formed from an end face. A tenon hole 5a extending in the vertical direction which is the axial direction of the pillar 5 is opened, and the mortise hole of each of the base 4 and the lower end of the pillar 5 is located at a position corresponding to the tenon hole 4a, 5a. The pin holes 4b, 5b are formed penetrating in the direction perpendicular to the axial direction, and the tenon member 1 is inserted into the tenon hole 4a of the base 4, and then aligned with the pin hole 4b of the base 4. The tenon member 1 is connected to the base 4 by passing the pin 6 through the pin hole 1a of the tenon member 1, and then the tenon member 1 and the tenon member through-hole 2a of the base plate 2 are fitted to each other so that the tenon member 1 And then attach the base plate 2 to the anchor bolt 7 or Fixed to the base 4 by such a tenon member 1 reinforces to pull from the base 4 by engagement of the flange 1b and the base plate 2, then,
The tenon member 1 projecting from the base 4 and the tenon hole 5a at the lower end of the column 5 are fitted together to fit the lower end of the column 5 into the tenon member 1, and then the pin hole 5b at the lower end of the column 5 is fitted. By joining the tenon member 1 to the column 5 by passing the pin 6 through the pin hole 1a of the tenon member 1 aligned therewith, the end face of the lower end of the column 5 can be joined to the base 4.

[0005]

By the way, in recent years, further improvement of the seismic resistance of a wooden building has been demanded, and the tensile strength of a wooden frame using a wooden member has been determined to be higher than that of a wooden house using the frame. It is thought to affect. However, the inventor of the present application has proposed that the tenon 1
When a tensile test was performed to apply a tensile force in the axial direction to the column 5 with respect to the frame assembly in which the column 5 was joined to the base 4 by using the method, the lower end of the column 5 was positioned at the position of the pin hole 5b with a not so high tensile force. The result was that the lower end of the pillar 5 was broken by tearing through.

[0006] As a result of an investigation and analysis by the present inventor of this point, in the above-mentioned joint fitting, the connection between the lower end of the column 5 and the tenon member 1 is performed only through the pin 6,
Due to the reaction force from the pin 6 toward the end face applied to the lower end portion of the column 5 against the pulling force, a large amount of the direction intersecting with the direction of the fiber extending along the axial direction of the column 5, that is, the direction of weaker strength. It has been found that a force is generated inside the pin hole 5b, and the large component force causes the lower end of the column 5 to be spread, torn and broken.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a joint which advantageously solves the above-mentioned problems, and a joint for a wooden frame member according to the present invention is provided. A joining bracket for joining an end surface of an end portion of the first wood frame member to the second wood frame member, wherein the end portion of the first wood frame member is orthogonal to the axial direction. A metal connecting member coupled to the end portion by a pin inserted into a pin hole penetratingly formed in the direction, and also coupled to the second wooden frame member; A metal frame-shaped end reinforcing member fitted around the end of the shaft assembly is combined.

In this joint, the metal connecting member is formed by a pin inserted into a pin hole formed through an end of the first wooden frame member in a direction perpendicular to the axial direction. Is connected to the end, and the connecting member is also connected to the second wood frame member. In this joint, a metal frame-shaped end reinforcing member fitted around the end of the first wood-framed member extends in the axial direction of the first wood-framed member. The ends are reinforced against forces in a direction transverse to the direction of the extending fibers.

Therefore, according to this joint, the end face of the end portion of the first wood frame member can be joined to the second wood frame member, and the first wood frame member is attached to the first wood frame member. Fiber that extends along the axial direction of the first wood-framed member due to a reaction force from the pin toward the end face applied to the lower end portion of the first wood-framed member against the pulling force when an axial pulling force is applied. Even if a large component force, that is, a tearing force, in the direction intersecting the direction of
Since the end of the first wooden framing member reinforced by the end reinforcing member can sufficiently resist the large tearing force,
It is possible to effectively prevent the tearing and destruction of the end of the first wooden frame member, to increase the tensile strength of the frame, and to improve the earthquake resistance of a wooden building using the frame. .

In the present invention, the connecting member and the frame-shaped end reinforcing member may be integrally connected. If the connecting member and the end reinforcing member are integrally connected, when the connecting member is connected to the end of the first wooden frame member by a pin, the end reinforcing member can be simultaneously attached to the end of the connecting member. In addition, since the end reinforcing member is integrally connected to the connecting member and is positioned, the positioning of the connecting member with respect to the end of the first wood frame member can be performed at the same time around the end. Since the end reinforcing member is positioned with respect to the end portion, the end reinforcing member can be easily fitted around the end of the first wood frame member, and therefore, when assembling the frame. Construction can be facilitated.

On the other hand, in the present invention, the connecting member and the frame-shaped end reinforcing member may be separated and formed separately. If the connecting member and the end reinforcing member are separated and separated from each other, a step of joining the connecting member and the end reinforcing member by welding or the like becomes unnecessary, so that the joining fitting of the present invention can be easily and inexpensively manufactured. Since the connecting member and the end reinforcing member can be separately stored and transported separately, since the joining metal fittings are not bulky,
The storage and transportation of the joint fitting of the present invention in a warehouse or a site can be facilitated.

Further, in the present invention, the connecting member has a pipe shape, and has a plurality of pin holes formed in a side surface thereof in a direction perpendicular to an axial direction thereof, with a gap in the axial direction. You may have it open.
If the connecting member is formed in the shape of a pipe having such a pin hole, it is lighter than a solid case because of the hollow shape, which facilitates handling during transportation and use, and has a secondary cross-section without significantly increasing the weight. Since the moment can be increased, it is possible to have a high strength against bending force, and since it is hollow, drilling of a pin hole can be performed more easily than in a solid case.

Further, in the present invention, preferably, the height of the end portion reinforcing member is not less than 10 mm and not more than 80 mm,
More preferably, the height of the end reinforcing member is not less than 20 mm and not more than 50 mm. When the height is less than 10 mm, the first wood frame is formed by a reaction force applied from the end reinforcing member in order to suppress the deformation of the end when a tearing force acts on the end of the first wood frame member. The surface pressure on the end surface of the member becomes too high, and the end reinforcing member sinks into the end surface of the first wood frame member, and the strength of the end portion of the first wood frame member against tearing failure is reduced. This is because the height may not be high enough.
This is because it becomes difficult to fix another wooden member near the end of the wooden frame member with nails or wooden screws.

When the height of the end reinforcing member is set to 20 mm or more, even if the first wooden frame member is made of a relatively soft material, the end of the first wooden frame member can be sufficiently strengthened against tearing and fracture. If the height is set to 50 mm or less, for example, when the first wood frame member is a pillar and the second wood frame member is a base, the lower end of the pillar is usually used as a floor base material and a floor finish material. At a position away from the base for a thickness of up to 45 mm,
For example, a narrow baseboard can be fixed with a nail, a wood screw, or the like, so that the application range to the frame can be broadened.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Here, FIG. 1 is an exploded perspective view showing an embodiment of a joint for a wooden frame member of the present invention together with a wooden frame member, and FIG. 2 shows a shaft using the joint of the embodiment. FIG. 3 is a cross-sectional view, and FIG. 3 is a side view showing an example in which a frame using the joint fitting of the embodiment is applied to a wooden building.

FIGS. 1 and 2 show a joint fitting of this embodiment.
As shown in the figure, the end face of the lower end of the pillar 5 as the first wood frame member is mounted on the base 4 as the second wood frame member which is laid horizontally on the foundation 3 and fixed by anchor bolts 7. A pin hole 5b is formed at the lower end of the pillar 5 so as to penetrate the pillar 5 in a direction perpendicular to the axial direction thereof.
The pin 6 is connected to the lower end of the column 5 by a pin 6 inserted through the pin 4 and is inserted into a pin hole 4b formed through the base 4 in a direction perpendicular to the axial direction.
A tenon member 11 as a metal connecting member, which is also connected to the base 4 thereof, and a rectangular ring 12 as a metal frame-shaped end reinforcing member fitted around the lower end of the pillar 5. Are combined.

In the joint fitting of this embodiment, the tenon member 11 is formed in a pipe shape using, for example, a steel pipe, and a pin is formed on a side surface of the tenon member 11 in a direction perpendicular to the axial direction. A plurality of holes 11a, for example, three in the illustrated example, are formed so as to penetrate at intervals in the axial direction, and a bottom plate 13 is formed integrally with the ring 12, and the ring 12 is provided with a tenon member 11 through the bottom plate 13. Is integrally connected to the middle part of In addition, such a structure, for example, forms a ring 12 by bending an elongated steel plate into a ring shape and welding both ends of the steel plate, and forms a bottom plate 13 by drilling a through hole in the center of a rectangular steel plate. And its bottom plate
13 can be formed by welding the tenon member 11 to the bottom plate 13 by inserting the tenon member 11 into the through hole of the bottom plate 13 while welding the 13 to the lower end of the ring 12. The material of the ring 12 and the bottom plate 13 is, for example, JIS G310
SS material (rolled steel material for general structure) specified in 1.
In addition to SPHC material (hot rolled mild steel sheet) specified in SG3131, SAPH material specified in JIS, SP
High-strength steel plates such as FH materials and SPFC materials are suitable for their production and for the reinforcing function of the lower end of the column 5, and stainless steel materials may be used in consideration of the rust prevention effect.

According to the joint fitting of this embodiment, as shown in FIGS. 1 and 2 and as described above,
A mortise hole 4a extending in the vertical direction is drilled in the base 4 horizontally fixed on the top, and a mortise hole 5a extending in the vertical direction which is the axial direction of the pillar 5 is formed in the lower end of the pillar 5 from the end face. And the height of the ring 12 around the lower end of the pillar 5 (the bottom plate)
A notch portion 5b having a notch depth corresponding to the plate thickness of the ring 12 at a height corresponding to the inner method from 13), and a tenon hole at each of the base 4 and the lower end of the column 5 Pin holes 4b and 5b are formed at positions corresponding to 4a and 5a in a direction perpendicular to the axial direction of the tenon, respectively.
After the tenon member 11 is inserted into the tenon hole 4a, the pin 6 is inserted through the pin hole 4b of the base 4 and the pin hole 11a of the tenon member 11 aligned therewith, and the tenon member 11 is joined to the base 4, The tenon member 11 protruding from the base 4 and the tenon hole 5a at the lower end of the column 5 are fitted together, and the ring 12 connected to the tenon member 11 and the notch 5b around the lower end of the column 5 are formed. Is fitted to the tenon member 11 so that the lower end of the post 5 is fitted thereto, and then the pin 6 is inserted through the pin hole 5b at the lower end of the post 5 and the pin hole 11a of the tenon member 11 aligned therewith. By connecting the member 11 to the column 5, the end face of the lower end of the column 5 can be joined to the base 4.

According to the joint fitting of this embodiment, the ring 12 fitted around the lower end portion of the column 5 exerts a force in a direction intersecting the direction of the fiber extending along the axial direction of the column 5. The lower end of the column 5 is reinforced with respect to the column 5, so that the column 5 is subjected to a tensile force in the axial direction, and the fiber 5 is subjected to a reaction force with respect to the tensile force from the pin 6 toward the end face of the column 5. Even if a large component force, that is, a tearing force, in the direction intersecting with the pin 5 is generated inside the pin hole 5b, the lower end of the pillar 5 reinforced by the ring 12 can sufficiently oppose the great tearing force. Can effectively prevent tearing and destruction at the lower end of the frame, and can increase the tensile strength of the frame, thereby improving the earthquake resistance of a wooden building using the frame.

The inventor of the present application used a hinoki cypress material having a cross section of 105 mm × 105 mm as a horizontal member corresponding to the base 4, and 10 mm as a vertical member corresponding to the column 5.
Using a 5mm x 105mm cross-section SPF laminated timber, tenon
A joint test specimen corresponding to the prior art in which the horizontal member and the vertical member were joined by only 1 and a joint specimen in which the horizontal member and the vertical member were joined by the joint fitting of this embodiment were created. As a result of conducting a tensile force test in which a tensile load is applied to the horizontal member and the vertical member of those connection specimens using a material testing machine, it is compatible with the conventional technology in which the horizontal member and the vertical member are joined only by the tenon member 11. Whereas, the joint specimens where the horizontal member and the vertical member were joined by the joint fitting of the above example had a tensile joint strength of 4700 kgf.
Met. Therefore, the effect of improving the tensile strength of the joint bracket of this embodiment was confirmed.

Further, according to the joint fitting of this embodiment, the tenon member 11 and the ring 12 are integrally connected, so that
When the tenon member 11 is connected to the lower end of the pillar 5 by the pin 6, the ring 12 can also be attached to the lower end thereof, and since the ring 12 is integrally connected to the tenon member 11 and positioned, The tenon member 11 is a tenon at the lower end of the pillar 5.
Positioning the ring 12 with respect to the notch 5b around the lower end of the column 5 at the same time positions the ring 12 with respect to the notch 5b around the lower end of the column 5. Can be easily fitted together, and therefore, the construction when assembling the frame with the base 4 and the pillars 5 can be facilitated. The tenon member 11 and the ring
The bottom plate 13 that joins the column 12 also has a function of covering the end surface of the lower end of the column 5 and protecting the lower end of the column 5 from entry of moisture.

Further, according to the joint fitting of this embodiment, the tenon member 11 is formed in a pipe shape and has
Since three pin holes 11a formed through in the direction perpendicular to the axial direction are formed at intervals in the axial direction, the weight is lower than that of the solid case because it is hollow. It is easy to handle during transportation and use, and can increase the second moment of area without increasing the weight so much that it can have high strength against bending force, and because it is hollow, it is solid Pin hole than
Drilling of 11a can also be easily performed.

In the joining fitting of this embodiment,
Preferably, the height h of the ring 12 shown in FIG. 3 (external method including the bottom plate 13) is not less than 10 mm and not more than 80 mm, and more preferably, the height h of the ring 12 is not less than 20 mm and not more than 50 mm.
When the height h is less than 10 mm, generally, when a tearing force acts on the lower end of the column 5, the surface pressure on the surface of the lower end of the column 5 due to the reaction force applied from the ring 12 in order to suppress the deformation of the lower end due to the tearing force. Is too high, the ring 12 may sink into the surface of the lower end of the column 5, and the strength of the lower end of the column 5 against tearing and tearing may not be sufficiently high. If it exceeds, it is generally difficult to fix another wooden member near the lower end of the pillar 5 with a nail or a wood screw.

If the height h of the ring 12 is 20 mm or more, even if the column 5 is made of a relatively soft material, the lower end of the column 5 can have sufficiently high strength against tearing.
If the height h is set to 50 mm or less, as shown in FIG. 3, when the frame using the joint fitting of this embodiment is applied to a wooden building, the floor base material 14 is usually made of plywood, OSB or the like. Since the thickness is about 12 mm to 27 mm, the floor finishing material 15 stretched thereon is usually a wooden flooring material, and the thickness is 12 mm to 18 mm. A wall of a thickness of about 12 mm to 15 mm such as a gypsum board or the like between the pillar 5 and the floor base material 14 and the floor finish material 15 at a position away from the base 4 by a maximum thickness of usually 45 mm. Interior) Narrow a baseboard (inside work material) 18 without being hindered by the ring 12, sandwiching a base material 16 and a thin wall (interior) finish material 17 such as a vinyl chloride plate.
It can be fixed at 19, thus providing a wider range of applications for the framework.

FIGS. 4 (a) and 4 (b) show other embodiments of the joining member for a wooden frame member of the present invention, in which the connecting member and the end reinforcing member are separated and separated from each other. In the embodiment shown in FIG. 4A, while a rectangular ring 12 as a metal frame-shaped end reinforcing member and a metal bottom plate 13 are integrally connected, A mortise member 11 as a connecting member made of stainless steel is formed separately from the ring 12 and the bottom plate 13 and is formed separately. When the joint fitting of this embodiment is used, the ring 12 and the bottom plate 13 and the tenon member 11 are formed. Are combined. In the embodiment shown in FIG. 4B, there is no bottom plate and a tenon member as a metal connecting member.
11 and a rectangular ring 12 as a metal frame-shaped end reinforcing member are separated from each other and formed separately, and when using the joining fitting of this embodiment, the tenon member 11 and the The ring 12 is combined.

According to this embodiment, the step of welding the tenon member 11 to the ring 12 or the bottom plate 13 by welding or the like is not required, so that the joining fitting can be manufactured easily and inexpensively. And the ring 12 and the bottom plate 13 connected to it
And can be stored separately and transported separately,
Since the joining fitting does not become bulky, it is possible to easily store and transport the joining fitting in a warehouse or a site.

Although the present invention has been described with reference to the illustrated examples, the present invention is not limited to the above examples. For example, the tenon member 11, the ring 12, and the bottom plate 13 are integrally formed from the beginning by casting or the like. Alternatively, the tenon member 11 may be formed by rolling a steel plate into a pipe shape. Then, the connecting member may not be formed in a pipe shape like the tenon member 11 of the above-described embodiment, but may be formed as a solid rod shape and a pin hole may be formed therein. A hookable U-groove may be provided.

The joint fitting of the present invention is not limited to the joint between the column 5 and the base 4 in the above embodiment, but also the joint between other wooden frame members, such as the joint between a column member such as a beam and a column. Needless to say, it can also be used.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a joint for a wooden framed member of the present invention together with a wooden framed member.

FIG. 2 is a cross-sectional view showing a shaft assembly using the joint fitting of the embodiment.

FIG. 3 is a side view showing an example in which a frame using the joint fitting of the above embodiment is applied to a wooden building.

FIGS. 4 (a) and (b) show another embodiment of the joint for a wooden framed member of the present invention, in which the connecting member and the end reinforcing member are separated and separated from each other. It is a perspective view.

FIG. 5 is a perspective view showing a conventional metal fitting.

FIG. 6 is a cross-sectional view showing a shaft assembly using the above-mentioned conventional joint fitting.

[Explanation of symbols]

 Reference Signs List 1 Mortise member 2 Base plate 3 Foundation 4 Base 4a Mortise hole 4b Pin hole 5 Column 5a Mortise hole 5b Pin hole 5c Notch 6 Pin 7 Anchor bolt 11 Mortise member 11a Pin hole 12 Ring 13 Bottom plate 14 Flooring material 15 Floor finishing material 16 Base material for wall (interior) 17 Finishing material for wall (interior) 18 Baseboard (material for internal construction) 19 Nail

Claims (6)

[Claims] 1. A joint for joining an end face of an end of a first wood-framed member to a second wood-framed member, wherein the end of the first wood-framed member has an axial direction. A metal connecting member coupled to the end portion by a pin inserted into a pin hole penetratingly formed in a direction perpendicular to the second wooden frame member; and A metal frame-shaped end reinforcing member fitted around the end of the first wooden frame member; and a metal fitting for a wooden frame member. 2. The joint according to claim 1, wherein the connecting member and the frame-shaped end reinforcing member are integrally connected. 3. The joining fitting for a wooden framed member according to claim 1, wherein said connecting member and said frame-shaped end reinforcing member are separated and formed separately. 4. The connecting member has a pipe shape, and has a plurality of pin holes formed in a side surface thereof in a direction perpendicular to an axial direction thereof at intervals in the axial direction. 4. The method according to claim 1, wherein
The joining bracket for a wooden framed member according to any one of the above. 5. The joining fitting for a wooden framed member according to claim 1, wherein the height of the end reinforcing member is 10 mm or more and 80 mm or less. 6. The joint according to claim 5, wherein the height of the end reinforcing member is not less than 20 mm and not more than 50 mm.