JP2005120602A - Joint structure of wooden building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure for firmly joining two wood members in a wooden building. <P>SOLUTION: Hangers 10 are embedded in one wood A. Drift pin insertion holes 12 are formed in the hangers 10. After inserting drift pins 15 embedded in the wood A, an adhesive 18 is injected in injection holes 16 and discharge holes 17 of the drift pins 15 and filled in clearances between the drift pins 15 and the drift pin insertion holes 12 of the hangers 10. Joining members 1 are arranged at the joining surfaces of the wood A with the hangers embedded and the facing wood B to join them respectively. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a joining structure for joining two timbers in a wooden building, and more particularly to a joining structure for a wooden building joined by rigid joining.

  Conventionally, as what joins two timbers with a wooden building by rigid joining, there exists what is described in patent document 1. FIG. The contents of this Patent Document 1 are configured to firmly join the foundation and the first floor pillar, and according to this, anchor bolts are embedded in the foundation, and metal pipe pins are screwed into the anchor bolts. After that, a pipe pin is inserted into the lower end of the first floor pillar. And it is comprised so that a 1st floor pillar and a pipe pin may be fixed with a some pin. However, when inserting the pin into the pipe pin, there is a backlash between the pin insertion hole formed in the pipe pin and the pin, and the fitting state of the plurality of pins arranged in parallel with each other is the same. impossible. Therefore, although the pipe pin is fixed to the first floor pillar by the pin, strictly speaking, play occurs along the axial direction of the pipe pin with the first floor pillar. Due to this play, a shearing force is applied to the pin when vibration is generated, and the bonding strength is weakened.

  In order to solve this problem, there has been proposed a joint structure with improved joint strength as shown in FIGS. According to this, a pair of grooves 221 are formed in a round bar-like rigid rod (hereinafter referred to as a hanger) 22 embedded in the wood 21 at a position opposed to each other across the axis in a direction orthogonal to the axis. Has been. A plurality of the pair of grooves 221 are formed so as to alternately intersect along the axis of the hanger 22. A drift pin 24 is inserted into the hanger 22 embedded in the wood 21 from the outside of the wood 21 so as to pass through the groove 221 of the hanger 22.

  Accordingly, the hanger 22 is fixed by being fitted into the groove 221 of the hanger 22 so that two pairs of drift pins 24 sequentially intersect with the buried hanger 22.

Further, in order to fill the play formed between the hanger insertion hole 211 of the wood 21 and the hanger 22, the adhesive is injected toward both ends of the hanger 22 in the direction orthogonal to the axial direction of the hanger 22 of the wood 21. A hole 25 is formed, and an adhesive is injected from one of the injection holes 25 to fill a gap between the hanger 22 and the wood 21. As a result, the hanger is firmly bonded to the 22 wood 21.
Japanese Patent Laid-Open No. 2003-13503 (see pages 2 and 2 and FIG. 1)

  However, the conventional joint structure shown in FIGS. 5 to 6 is mainly employed in European timber buildings. That is, a wooden building is a relatively large building compared to a Japanese structure. Therefore, grooves 221 are formed on both sides of the axis of the hanger 22, and the pair of drift pins 24 are hung. Although it is possible to secure a necessary thick portion even if it is fitted in the groove 221 so as to intersect along the axis of 22, it is not possible to adopt it for a small Japanese structure due to insufficient strength. That is, in order to form the groove 221 for fitting the pair of drift pins 24, the hanger 22 itself must be formed thick. To thicken the hanger 22 itself, wood for embedding the hanger 22 I had to increase 21. Since it is difficult to enlarge the original wood from the current situation in Japan, in order to employ the hanger 22 shown in FIGS. 5 to 6, the outer diameter of the hanger 22 is reduced, and the outer diameter is reduced. As a result, the required thickness cannot be ensured, and the strength of the hanger 22 itself is reduced, thereby reducing the bonding strength.

This invention solves the above-mentioned subject, and it aims at providing the joining structure of the wooden building which can improve intensity | strength using the hanger of a magnitude | size suitable for a wooden building of Japan. In order to achieve the above object, the joining structure of a wooden building according to the present invention is configured as follows. That is,
According to the first aspect of the present invention, a pair of wood to be joined, a joining member disposed between opposing surfaces of the wood, a buried fitting embedded in one piece of wood, and the buried fitting as the one piece of wood. A drift pin that adheres to a wooden building, and a wooden building joining structure that joins a pair of wood by fixing the buried fitting and the joining member,
The embedded metal fitting is formed in a circular column shape and has a plurality of drift pin insertion holes along the axial direction.
The drift pin has an injection hole formed along the axial direction, and a discharge hole penetrating the outer peripheral surface of the drift pin perpendicular to the injection hole,
After inserting the drift pin into the drift pin insertion hole of the embedded metal embedded in the one piece of wood through the one piece of wood, filling the injection hole and the discharge hole of the drift pin with adhesive. It is a feature.

  The invention according to claim 2 is characterized in that the drift pin holes of the embedded metal fitting are alternately formed along the axis.

  According to invention of Claim 1, when joining a pair of timber, after embed | buried metal fitting in one timber and fixing with a drift pin, a joining member is interposed in each joining surface, Secure the buried bracket. When fixing the embedded bracket with the drift pin, the drift pin is inserted from the end face of the wood into the drift pin insertion hole formed along the axial center of the embedded bracket, and the injection hole formed in the drift pin Fill the drain hole with adhesive. When the adhesive is injected from the injection hole of the drift pin and passes through the discharge hole, the gap between the drift pin and the drift pin insertion hole of the embedded metal fitting is filled, and the drift pin is fixed to the embedded metal fitting. Become.

  Since the adhesive originally bonds the buried metal fitting and the drift pin, the drift pin can be firmly fixed to the buried metal fitting at the same time as filling the gap. This eliminates play between the embedded metal fitting and the drift pin, eliminates play in the axial direction of the embedded metal fitting, and provides a firm joint structure.

  In addition, since the drift pin is inserted so as to be orthogonal to the axial center toward the axial center of the embedded bracket, it is necessary to secure a thick portion around the drift pin in the embedded bracket even if the embedded bracket has a small diameter. This reduces the number of cross-sectional defects, and the strength can be maintained. Therefore it can be suitable for Japanese buildings.

  According to the invention described in claim 2, since the plurality of drift pins to be inserted into the embedded metal fitting are arranged so as to cross in order along the axial direction, that is, the drift pin holes formed in the embedded metal fitting are sequentially provided. Since it is formed in the orthogonal direction, the shear plane is shifted and the strength of the embedded metal fitting is not lowered.

  The joining structure of the wooden building according to the embodiment is an embedding method in which buried metal fittings are embedded in a pair of opposing timbers, and a joining member is interposed between opposing surfaces of the pair of timbers, and each timber is secured to each joining member. A metal fitting is connected to bend and tension-join.

  FIG. 1 is a cross-sectional view showing a joining structure of two pieces of wood that are joined so as to be orthogonal to each other, and wood A (hereinafter referred to as a horizontal beam 3) and wood B (hereinafter referred to as a vertical column 5) are connected via a joining member 1. Are arranged so that the joint surfaces face each other. The surface of the cross beam 3 facing the upright column 5 has the central protrusion 3a in contact with the end surface of the upright column 5, and the box-shaped joining members 1 are arranged in the space portions on both sides of the central protrusion 3a. The lateral beam side wall portion 1 a of the joining member 1 is brought into contact with the end surface of the transverse beam 3, and the upright column side wall portion 1 b of the joining member 1 is brought into contact with the end surface of the upright column 5.

  On the other hand, on both sides of the central protrusion 3 a of the horizontal beam 3, metal fitting insertion holes 8 are formed from the contact surfaces with the respective joining members 1 toward the inside of the horizontal beam 3. A buried metal fitting (hereinafter referred to as a hanger) 10 is inserted into the metal fitting insertion hole 8 and fixed to the cross beam 3 and fastened to the joining member 1 with a bolt 6 at the joining member side end face of the hanger 10.

  In addition, the joining member 1 is a box-shaped box having a front cross-sectional shape that includes a cross beam side wall portion 1a, a vertical column side wall portion 1b, and a pair of connecting wall portions 1c that connect the cross beam side wall portion 1a and the vertical column side wall portion 1b. Is formed. The cross beam 3 is connected by a bolt 6 attached from the side beam side wall portion 1a side of the joining member 1, and the upright column 5 is a bolt inserted from the opposite side of the joining member 1 to the upright column side wall portion 1b side. 7 is connected to the joining member 1.

  In addition, in the Example, as shown in FIG. 2, the hanger 10 is embed | buried at four places by the side beam 3 side with respect to 1 joining surface of the side beam 3 and the upright column 5. As shown in FIG.

  As shown in FIG. 3, the hanger 10 is formed in a round bar shape, and a drift pin insertion hole 12 is formed in order along the axis. The drift pin insertion hole 12 is formed in two directions so as to cross the directions orthogonal to each other in order, and from the end surface orthogonal to the axis of the hanger 10 of the horizontal beam 3 as shown in FIG. The drift pin 15 is inserted. Therefore, also in the cross beam 3, as shown in FIG. 2, the axial center is set so that the drift pin driving hole 9 for driving the drift pin 15 toward the hanger 10 corresponds to each drift pin insertion hole 12 of the hanger 10. Are formed so as to cross each other in order.

  As shown in FIG. 4, the drift pin 15 includes an injection hole 16 extending from one end surface along the axial direction, and an outer peripheral surface of the drift pin 15 orthogonal to the end of the injection hole 16. And a discharge hole 17 reaching the surface. The injection hole 16 and the discharge hole 17 are filled with an adhesive.

  Next, a joining procedure for joining the cross beam 3 and the upright column 5 with the joining member 1 and the hanger 10 will be described.

  First, a metal fitting insertion hole 8 and a plurality of drift pin driving holes 9 are formed in the horizontal beam 3, and the hanger 10 is inserted into the metal fitting insertion hole 8. At this time, if one end surface of the hanger 10 inserted into the horizontal beam 3, that is, the end surface toward the upright column 5 is inserted into the horizontal beam 3 so as to coincide with the insertion side end surface of the horizontal beam 3, a plurality of drift pins of the hanger 10 are inserted. The holes 12 coincide with the pitches of the plurality of drift pin driving holes 9 formed in the horizontal beam 3. At the same time, the hanger 10 is rotated moderately about the axis, so that the drift pin insertion hole 12 of the hanger 10 and the drift of the cross beam 3 formed so as to cross each other in order to form a cross shape along the axis. The pin driving hole 9 is aligned.

  In this state, a plurality of drift pins 15 are driven into the drift pin insertion holes 12 of the hanger 10 through the drift pin insertion holes 9 of the cross beam 3 at positions that intersect in order to form a cross shape along the axis. It becomes. As a result, the hanger 10 is fixed to the cross beam 3, but strictly speaking, there is a gap between the drift pin 15 and the drift pin insertion hole 12 of the hanger 10. As shown in FIG. 4, the drift pin 15 inserted through the horizontal beam 3 and the hanger 10 injects an epoxy resin adhesive 18 from the end face of the injection hole 16. The adhesive 18 passes from the injection hole 16 of the drift pin 15 through the discharge hole 17, between the outer peripheral surface of the drift pin 15 and the drift pin insertion hole 12 of the hanger 10, and between the drift pin 15 and the drift pin of the cross beam 3. It will be injected and filled between the driving holes 9.

  Note that the adhesive may be a sealant used for general construction, but in the examples, a crout mortar material (for example, Master Seal 560 manufactured by Pozoris Co., Ltd.) is used.

  As a result, the hanger 10 is integrally fixed to the cross beam 3. Then, the bonding member 1 is inserted into the bonding surface between the horizontal beam 3 and the upright column 5 with respect to the hanger 10 fixed to the horizontal beam 3. When the joining member 1 is inserted, the lateral beam side wall portion 1 a is disposed so as to contact the end surface of the hanger 10, and the upright column side wall portion 1 b is disposed so as to contact the joining surface of the upright column 5. And the volt | bolt 6 is screwed toward the internal thread of the hanger 10 from the side beam side wall part 1a side. On the other hand, in the upright column 5, the bolt 7 is inserted from the side opposite to the upright column side wall portion 1 b of the upright column 5 and screwed with a nut on the upright column side wall portion 1 b side to fasten the upright column 5 and the joining member 1.

  As described above, in the joining structure of the wooden building of the embodiment, when the pair of cross beams 3 and the upright columns 5 are joined, the hanger 10 is embedded and fixed to one of the cross beams 3, and the joining member 1 is attached to each joint surface. Therefore, a rigid joint can be formed and a strong wooden building can be formed. In particular, when fixing the hanger 10 to the cross beam 3, after a plurality of drift pins 15 are driven into the hanger 10, an adhesive is injected from the drift pin 15, and the drift pin 15 and the drift pin insertion hole 12 of the hanger 10 are And the gap between the drift pin 15 and the drift pin driving hole 9 of the horizontal beam 3 is filled, so that the drift pin 15 is firmly fixed to the hanger 10 and the horizontal beam 3. For example, even if a shearing force is applied to the hanger by vibration, it can sufficiently withstand.

  In addition, the drift pin 15 is inserted in a direction perpendicular to the axis toward the axial center of the hanger 10 and is arranged so as to cross in order along the axial center. Concentrated stress in the same direction is difficult to be applied, and even if the hanger 10 has a small diameter, a thick portion around the drift pin 15 in the hanger 10 can be secured to reduce cross-sectional defects and retain strength. be able to. Therefore it can be suitable for Japanese buildings.

  In addition, the joining structure of the wooden building of this invention is not limited to said form, For example, in the Example, the hanger 10 is embed | buried in the cross beam 3, and it is made to join with the standing pillar 5, Of course, a standing pillar The same applies to the case where the hanger 10 is buried in 5 and joined to the cross beam 3.

It is sectional drawing which shows one form of the junction structure of the wooden building of this invention. It is II-II sectional drawing in FIG. It is a disassembled perspective view which shows a hanger and a drift focus. It is the expanded sectional view which inserted the drift pin in the hanger. It is a disassembled perspective view which shows the joining structure of the conventional wooden building. It is sectional drawing which shows the state which embedded the hanger in FIG. 5 in the timber.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Joining member 1a Side beam side wall part 1b Standing column side wall part 3 Cross beam (wood A)
5 Vertical pillar (wood B)
8 Bracket insertion hole 9 Drift pin driving hole 10 Hanger (buried metal fitting)
12 Drift pin insertion hole 15 Drift pin 16 Injection hole 17 Discharge hole 18 Adhesive

Claims (2)

A pair of wood to be joined; a joining member disposed between opposing faces of the wood; an embedded metal fitting embedded in one wood; and a drift pin for fixing the embedded metal to the one wood. A joining structure of a wooden building that joins a pair of wood by fixing the buried metal fitting and the joining member,
The embedded metal fitting is formed in a circular column shape and has a plurality of drift pin insertion holes along the axial direction.
The drift pin has a vertical hole portion formed along the axial direction, and a horizontal hole portion penetrating the outer peripheral surface of the drift pin perpendicularly from the vertical hole portion,
After the drift pin is inserted into the drift pin insertion hole of the embedded bracket embedded in the one wood through the one wood, the vertical hole portion and the horizontal hole portion of the drift pin are filled with an adhesive. This is a joint structure of wooden buildings.   2. The wooden building joint structure according to claim 1, wherein the drift pin holes of the embedded metal fitting are alternately crossed along the axis.

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