JP2014227800A - Joining structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joining structure having high initial rigidity, sufficient toughness and stable rupture strength and capable of reducing cost, in a joining part for joining a wooden building member.SOLUTION: A joining structure is provided for joining at least two or more of building members, and the building members are provided with a tool insertion hole for inserting a joining tool, and the joining tool is inserted into the tool insertion hole, and an adhesive is filled for fixing the joining tool and the building members, and the joining tool inserted into the tool insertion hole comprises: a cylindrical body part; an intermediate shaft part; and a screw end part, and the screw end part is provided by a rolling screw.

Description

  The present invention relates to a joining structure using joining jigs for joining wood building members, wood building members and concrete, stone, wood building members, steel members and the like.

  In recent years, the “Public Building Timber Utilization Promotion Law” has been enforced, and medium- and large-scale wooden buildings have been constructed. In this medium-sized and large-scale wooden building, high performance is required for the joint, and it is necessary to develop a joint hardware having high initial rigidity, sufficient toughness, stable fracture strength, and high fire resistance. It has been demanded.

  As shown in Patent Documents 1 to 3, as a conventional general joint structure, a method using a combination of all screw bolts, deformed reinforcing bars and an adhesive having a high joint performance in a wooden building member, and a lag screw method are known.

Japanese Patent Laid-Open No. 5-331919 JP 2013-14940 A JP 2008-280786 A

  However, the joint structure of Patent Document 1 is a structure in which a hollow building screw bolt and an adhesive are used together to join a wooden building member. There was a problem that the material was affected and the fracture strength varied.

  Moreover, in the connection structure of patent document 2, it is a joining system comprised with the hardware which produces a lag screw bolt and frictional resistance. However, according to this joining method, a certain degree of rigidity and toughness can be secured, but there is a problem that the joining strength and the initial rigidity are inferior to those of Patent Document 1 as compared with the joint structure of Patent Document 1. Moreover, since the metal object which produces frictional resistance is exposed to a junction part, while deteriorating aesthetics, it is inferior to fireproof performance.

  Furthermore, in the connection structure of Patent Document 3, in order to give the steel material deformation performance, it is a joining method in which a part of a deformed reinforcing bar or the like is cut and a rod having a deformed portion with a reduced cross-sectional area and an adhesive are used in combination. This is a bonding method having high bonding strength, rigidity and toughness. However, in this joining method, the deformed portion is only for providing toughness, and the cross-sectional area is set by the yield strength of the steel material. Moreover, in order to form a deformation | transformation part, you had to cut steel materials, and there existed a subject that cost etc. will start.

  Therefore, an object of the present invention is to provide a joint structure that can suppress high initial rigidity, sufficient toughness, stable fracture strength, and cost in a joint portion that joins wooden building members.

  In order to solve the above-described problem, the present invention is a joining structure for joining at least two or more building members, and the building member is provided with a jig insertion hole into which a joining jig is inserted, The jig insertion hole is filled with an adhesive for fixing the bonding jig and the building member, and the bonding jig inserted into the jig insertion hole is a cylindrical main body. Part, an intermediate shaft part, and a screw end part, and the screw end part is provided with a rolling screw.

  In addition, the inner periphery of the joining jig has a hollow portion into which an adhesive can be injected.

  Furthermore, the intermediate shaft portion of the joining jig is provided with a slit portion, and the outer diameter of the slit portion is formed to be smaller than the screw end portion.

  Furthermore, the building member is characterized in that an adhesive injection hole for injecting an adhesive into the jig insertion hole is formed.

  In addition, the building member is formed with an adhesive discharge hole for discharging the adhesive injected from the adhesive injection hole to the jig insertion hole.

  According to the features of the present invention, the building member is provided with a jig insertion hole into which a joining jig is inserted, and the joining jig is inserted into the jig insertion hole, and the joining jig and the building member are inserted. The bonding jig to be inserted into the jig insertion hole is provided with a cylindrical main body portion, an intermediate shaft portion, and a screw end portion, and the screw end portion is a rolled screw. The diameter of the screw end portion can be made larger than that of the intermediate shaft portion, and the strength of the screw end portion can be made stronger than the strength of the intermediate shaft portion.

  Furthermore, since the slit part is provided in the intermediate shaft part of the joining jig, the breaking strength of the joining jig can be adjusted and broken from the slit part. It can be stabilized. Further, since the joining jig breaks from the slit portion, the breaking position can be set to a desired position, and the intermediate shaft portion of the joining jig can prevent the building member from sliding off.

The perspective view of the joining jig used for the joining structure of this invention. (A) A side view of a joining jig used in the joining structure of the present invention, (b) a side view showing an end portion of the joining jig used in the joining structure of the present invention, (c) the joining structure of the present invention The elements on larger scale of the joining jig used for a. The partial cross section figure which shows the joining structure of this invention. The partial cross section figure of the junction structure which shows the 1st modification. The partial cross section figure of the junction structure which shows the 2nd modification. The partial cross section figure of the junction structure which shows the 3rd modification. The partial cross section figure of the junction structure which shows the 4th modification. The side view of the joining jig which shows 2nd Example. The partial cross section figure of the junction structure which shows the 2nd example. The partial cross section figure of the junction structure showing the 3rd example. Sectional view on the AA line of FIG. 10 which shows 3rd Example.

  Hereinafter, embodiments and modifications of the present invention will be described in detail with reference to the drawings.

[Example 1]
A joining structure 1 according to the present embodiment will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, a joining jig 5 made of a steel material used in the joining structure 1 includes a cylindrical main body 19, a screw end 21 formed by rolling, and an intermediate shaft having a curved shape. Part 23.

  The cylindrical main body portion 19 has a hollow portion 25 formed on the inner peripheral side, and is filled with an adhesive 10 to be described later.

  Screw ends 21 formed by rolling are formed at both ends of the joining jig 5. As shown in FIGS. 2A and 2B, an adapter mounting portion for mounting an adapter for filling an adhesive 10 to be described later on the first screw end portion 21a on one side of the screw end portion 21. 27 is formed on the inner peripheral side of the first screw end portion 21a. The adapter mounting portion 27 is formed on the inner peripheral side of the first screw end portion 21a and communicates with the hollow portion 25 described above. In this embodiment, the adapter mounting portion 27 is formed on the first screw end portion 21a. However, the adapter mounting portion 27 may be formed on the second screw end portion 21b.

  In addition, the length L1 of the first screw end portion 21a and the length L2 of the second screw end portion 21b of the present embodiment are set to the same length, but the lengths of the screw end portions at both ends are not necessarily the same. Not necessarily.

  The intermediate shaft portion 23 disposed so as to be sandwiched between the first screw end portion 21a and the second screw end portion 21b has a curved surface shape on the outer peripheral side. The intermediate shaft portion 23 is made of steel, and can be extended and deformed in a direction in which the first screw end portion 21a and the second screw end portion 21b are separated from each other. Further, in the vicinity of the second screw end portion 21b of the intermediate shaft portion 23, a slit portion 29 is formed to be recessed as shown in FIG.

  The outer diameter of the slit portion 29 formed in the joining jig 5 is set smaller than the valley diameter of the screw end portion 21. For example, when the outer diameter of the intermediate shaft portion 23 is 21.7 mm, the valley diameter of the screw end portion 21 is 20.7 mm, and the outer diameter of the slit portion 29 is 20.6 mm.

  Thus, since the breaking strength of the slit part 29 can be adjusted by making the outer diameter of the slit part 29 smaller than the other part of the joining jig 5, the fracture from the slit part 29 is generated. Can do. That is, the breaking strength of the joining jig 5 can be adjusted by appropriately changing the outer diameter of the slit portion 29.

  As shown in FIG. 3, the building member of this embodiment is composed of two building members 2 and 3.

  A first jig insertion hole 9 into which the first screw end 21a of the bonding jig 5 and the adhesive 10 are inserted and filled is formed on one surface side of the first building member 2. The first jig insertion hole 9 is set to be larger than the diameter of the first screw end portion 21a of the joining jig 5 described above.

  In addition, on the one surface side of the second building member 3, the second jig end 21 b of the joining jig 5 and the second jig insertion hole 13 into which the adhesive 10 is inserted and filled are formed. The tool insertion hole 13 is also set larger than the diameter of the second screw end 21b.

  The adhesive 10 filled in the first and second jig insertion holes 9 and 13 fills the gap between the bonding jig 5 inserted in the first and second jig insertion holes 9 and 13. Injected.

  This adhesive 10 is a liquid when injected into the first and second jig insertion holes 9 and 13, and the liquid is cured in the first and second jig insertion holes 9 and 13 to form a solid state. For example, an epoxy resin or the like is used.

  In this embodiment, before the first building member 2 and the second building member 3 are joined, the first jig insertion hole 9 and the second jig insertion hole 13 are filled with the adhesive 10 in advance and bonded. After filling the agent 10, the joining jig 5 is inserted into the first jig insertion hole 9 and the second jig insertion hole 13 to join the first building member 2 and the second building member 3.

  In the present embodiment, with the above-described configuration, the diameter of the screw end portion 21 can be made larger than that of the intermediate shaft portion 23, and the strength of the screw end portion 21 is made stronger than the strength of the intermediate shaft portion 23. be able to.

  In addition, since the adhesive 10 is filled between the screw threads at the screw end 21, it is possible to ensure the adhesion strength between the screw end 21 and the adhesive 10. On the other hand, in the intermediate shaft portion 23, since no thread is formed, the adhesive strength of the adhesive 10 is lower than that of the screw end portion 21, so that the first building member 2 and the second building member 3 are separated from each other. When an excessive force is applied, the intermediate shaft portion 23 is stretched and deformed by the yield of the steel material, and the joining jig 5 can be broken at the slit portion 29 formed in the intermediate shaft portion 23. That is, since the adhesion strength between the screw end portion 21 and the adhesive 10 can be made higher than the yield or fracture strength of the steel material of the intermediate shaft portion 23, the intermediate shaft without breaking or the like in the screw end portion 21. A break can be caused at the portion 23.

  Furthermore, when the joining jig 5 is broken at the slit portion 29, the first jig insertion hole 9 and the second jig insertion hole 13 in which the intermediate shaft portion 23 is formed in the first building member 2 and the second building member 3. Therefore, it is possible to prevent the building member from sliding down along with the breakage of the joining jig 5.

  In addition, it is possible to provide the joining jig 5 by forming the screw end portion 21 with a rolled screw and forming the slit portion 29 in a recessed manner. Can be suppressed.

  Next, the modification of the joining structure 1 is demonstrated using FIGS. The description of the same configuration as that of the first embodiment described above is omitted.

[First Modification]
In the 1st modification shown in FIG. 4, the building member consists of three building members 2,3,4.

  The joint structure 1 is configured such that the first building member 2 is opened to the first jig insertion hole 9 into which the first screw end 21a of the joining jig 5 is inserted on one surface side of the first building member 2. An adhesive injection hole 11 for injecting the adhesive 10 from the other side is formed.

  Further, the second building member 3 is provided with a second jig insertion hole 13 so as to penetrate the second building member 3.

  The third building member 4 is formed with a third jig insertion hole 15 into which the second screw end 21b of the bonding jig 5 is inserted on one surface side. An adhesive discharge hole 17 through which the adhesive 10 injected from the adhesive injection hole 11 is discharged is formed on the bottom side of the third jig insertion hole 15.

  That is, the first jig insertion hole 9 and the third jig insertion hole 15 communicate with each other via the second jig insertion hole 13 and are injected from the adhesive injection hole 11 of the first building member 2. The adhesive 10 is filled in the first jig insertion hole 9 and the second jig insertion hole 13 in the third jig insertion hole 15 and discharged from the adhesive discharge hole 17 formed in the third building member 4. The By visually observing that the adhesive 10 is discharged from the adhesive discharge hole 17, the filling of the adhesive 10 is completed.

  According to this modification, the same effect as that of the first embodiment described above can be obtained.

  In addition, after the filling of the adhesive 10 is completed, the adhesive injection hole 11 and the adhesive discharge hole 17 are closed with a wooden plug or the like, so that the aesthetic appearance is not deteriorated. 4 joining can be performed.

[Second Modification]
Next, a second modification will be described with reference to FIG.

  In the present modification shown in FIG. 5, the building member is composed of two building members 2 and 3 as in the first embodiment.

  In this joint structure 1, the first jig insertion hole 9 is provided so as to penetrate the first building member 2, and the first jig insertion hole 9 and the adhesive injection hole 11 are continuously formed. ing.

  In addition, an adapter 12 for injecting the adhesive 10 is screwed and attached to the adapter attachment portion 27 formed on the inner peripheral side of the first screw end portion 21 a of the joining jig 5, and is connected to the adapter 12. The adhesive 10 is injected into the inner peripheral side of the joining jig 5 from the existing pipe 14.

  That is, the first jig insertion hole 9 formed in the first building member 2 and the second jig insertion hole 13 formed in the second building member 3 are arranged to communicate with each other, and the first and second jigs The joining jig 5 is inserted into the insertion holes 9 and 13. At this time, the adapter 12 is attached to the adapter attachment portion 27 formed on the first screw end portion 21a of the joining jig 5.

  The adapter 12 is attached to the adapter attachment portion 27 formed on the inner peripheral side of the first screw end portion 21a of the joining jig 5 inserted into the first and second jig insertion holes 9 and 13, and is connected to the adapter 12. The adhesive 10 passes from the tube 14 through the inner peripheral side of the joining jig 5, the adhesive 10 is discharged from the opening end 28 of the second screw end portion 21 b, and the second jig insertion hole 13 is filled with the adhesive 10. Furthermore, the first jig insertion hole 9 is also filled with the adhesive 10. When the adhesive 10 is discharged from the adhesive injection hole 11, the filling of the adhesive 10 is completed.

  Also in this modification, the first and second building members 2 and 3 can be joined without impairing the aesthetic appearance by closing the adhesive injection hole 11 with a wooden plug or the like.

[Third Modification]
Next, a third modification will be described with reference to FIG.

  In the modification shown in FIG. 6, the building member is composed of three building members 2, 3, and 4 as in the first modification shown in FIG. 4.

  In the joint structure 1, an adhesive injection hole 11 is provided so as to open at an end portion of the first jig insertion hole 9 provided in the first building member 2. Moreover, the slit part 29 is formed also in the intermediate shaft part 23 by the side of the 1st screw end part 21a of the joining jig 5 of this modification.

  In this modification, the first jig insertion hole 9 of the first building member 2 and the second jig insertion hole 13 of the second building member 3 are arranged to communicate with each other, and the joining jig 5 is used as the second jig. Insert into the insertion hole 13 and the first jig insertion hole 9. In this state, the second screw end portion 21 b of the joining jig 5 protrudes from the one surface side of the second building member 3.

  At this time, the first screw end 21a is inserted into the first jig insertion hole 9 with the adapter 12 attached.

  In this state, the tube 14 is inserted from the adhesive injection hole 11 formed in the first building member 2 and connected to the adapter 12.

  Then, the second screw end portion 21 b protruding from the one surface side of the second building member 3 is inserted into the third jig insertion hole 15 of the third building member 4.

  In a state where the joining jig 5 is inserted into the first, second and third jig insertion holes 9, 13, and 15, the adhesive 10 is injected into the inner periphery of the joining jig 5 through the pipe 14.

  The adhesive 10 injected into the inner periphery of the joining jig 5 is discharged from the opening end 28 of the second screw end portion 21b and fills the third jig insertion hole 15 and the second jig insertion hole 13, The filling of the adhesive 10 is completed by being injected into the first jig insertion hole 9 and discharging the adhesive 10 from the adhesive injection hole 11.

  Also in the present modification, the first, second, and third building members 2, 3, and 4 can be joined without impairing the aesthetic appearance by closing the adhesive injection hole 11 with a wooden plug or the like.

[Fourth Modification]
Next, a fourth modification will be described with reference to FIG.

  This modification is a joint between the first building member 2 made of wood and the base material 6 made of reinforced concrete or the like.

  As shown in FIG. 7, a fourth jig insertion hole 16 into which the joining jig 5 is inserted is formed in the base material 6.

  Also in this modification, the first building member 2 is provided with an adhesive injection hole 11.

  In this modification, the adapter 12 is attached to the adapter attachment portion 27 of the first screw end portion 21a, the joining jig 5 is inserted into the first jig insertion hole 9 of the first building member 2, and the adhesive injection hole 11 Tube 14 is inserted and connected to adapter 12. Then, the joining jig 5 protruding from the first building member 2 is inserted into the fourth jig insertion hole 16 of the base material 6.

  The adhesive 10 is injected into the inner periphery of the joining jig 5 from the pipe 14 attached to the adapter 12 of the joining jig 5 inserted into the first and fourth jig insertion holes 9 and 16.

  The adhesive 10 injected into the inner periphery of the joining jig 5 is discharged from the opening end 28 of the second screw end portion 21 b and fills the fourth jig insertion hole 16 and the first jig insertion hole 9. The filling of the adhesive 10 is completed by discharging the adhesive 10 from the adhesive injection hole 11.

  Also in this embodiment, the first building member 2 and the base material 6 can be joined without impairing the aesthetic appearance by closing the adhesive injection hole 11 with a wooden plug or the like.

  In addition, also in the 1st-4th modification mentioned above, the effect similar to the above-mentioned 1st Example can be acquired.

[Example 2]
Next, a second embodiment will be described with reference to FIGS. The description of the same configuration as that of the first embodiment described above is omitted.

  In the joining structure 1 of the present embodiment, the length L3 of the first screw end 21a of the joining jig 5 is set shorter than the length L2 of the second screw end 21b.

  As shown in FIG. 9, such a joining structure 1 is joined via a base plate 7 between the first building member 2 and the foundation material 6 when the first building member 2 and the foundation material 6 are joined. Applies to cases.

  As shown in FIG. 9, an embedded portion 31 for fixing the base plate 7 to the base material 6 is embedded in the base material 6 so that one end side protrudes from the base material 6. A base plate 7 is fixed to the embedded portion 31 protruding from the base material 6 by a nut 8.

  The base plate 7 is a metal object having a substantially H-shaped cross section, and an opening 18 for fixing the joining jig 5 is formed.

  The first screw end 21 a of the joining jig 5 is inserted into the opening 18, and the joining jig 5 is fixed to the base plate 7 by the nut 8.

  In this embodiment, first, the joining jig 5 is inserted into the first jig insertion hole 9 of the first building member 2, the adhesive 10 is injected into the first jig insertion hole 9, and the first jig insertion hole 9. Is filled with the adhesive 10, and the first building member 2 and the joining jig 5 are fixed.

  Then, the first screw end 21 a of the joining jig 5 fixed to the first building member 2 is inserted into the opening 18 of the base plate 7, and the joining jig 5 and the base plate 7 are fixed by the nut 8.

  According to the present embodiment, in addition to the effects of the first embodiment described above, the length of the screw end portion is appropriately changed even when a base plate or the like is interposed between the building members. Can do.

Example 3
Next, a third embodiment will be described with reference to FIGS. Note that a description of the same configurations as those of the first and second embodiments described above will be omitted.

  In the joining structure 1 of the present embodiment, it consists of three building members, and the joining jig 50 described above is connected.

  As shown in FIG. 10, the joining jig 50 of the present embodiment includes a cylindrical main body portion 19, a screw end portion 21 formed by rolling, and an intermediate shaft portion 23 having a curved shape. .

  The screw end 21 includes a first screw end 52 a inserted into the first building member 2, second and third screw ends 52 b and 52 c inserted into the second building member 3, and the third building member 4. And a fourth screw end 52d to be inserted.

  An adapter 12 is formed between the second screw end 52b and the third screw end 52c. By inserting the tube 14 into the adapter 12 and injecting an adhesive through the tube 14, The adhesive 10 is injected into the inner peripheral side of the joining jig 50.

  The intermediate shaft portion 23 includes a first intermediate shaft portion 23a and a second intermediate shaft portion 23b. A slit portion 29 is formed in each of the first intermediate shaft portion 23a and the second intermediate shaft portion 23b. Yes.

  As shown in FIG. 11, the second building member 3 is provided with an adhesive injection hole 11 for injecting the adhesive 10, and the adhesive injection hole 11 is opened at a position where the adapter 12 is disposed. ing.

  In this embodiment, the joining jig 50 is inserted into the first jig insertion hole 9 of the first building member 2 so that the first screw end portion 52a and the fourth screw end portion 52d protrude from the first building member 2. To be located.

  The second jig insertion hole 13 of the second building member 3 and the third jig insertion hole of the third building member 4 in the first screw end 52a and the fourth screw end 52d protruding from the first building member 2, respectively. 15 and insert.

  Then, the pipe 14 is connected to the adapter 12, and the adhesive 10 is injected into the inner peripheral side of the joining jig 50. The adhesive 10 injected into the inner peripheral side of the bonding jig 50 passes through the inner peripheral side of the bonding jig 50 from the opening end 53 of the first screw end 52a and the opening end 54 of the fourth screw end 52d. By being discharged, filling the second jig insertion hole 13 and the third jig insertion hole 15, flowing into the first jig insertion hole 9, and being discharged from the adhesive injection hole 11 of the first building member 2. The filling of the adhesive 10 is completed.

  Also in the present embodiment, the first, second, and third building members 2, 3, and 4 can be joined without impairing the aesthetic appearance by closing the adhesive injection hole 11 with a wooden plug or the like.

  According to the present embodiment, in addition to the effects of the first embodiment and the second embodiment described above, the length of the joining jig is appropriately changed even when a building member having a thick building member is joined. can do.

  In addition, it is preferable that the jig | tool insertion hole in which a joining jig | tool is inserted in the 1st Example mentioned above, a modification, 2nd Example, and 3rd Example is provided in the construction member in multiple places.

  Moreover, the thickness of the main body part of the joining jigs of the first embodiment, the modified example, the second embodiment, and the third embodiment described above is a thickness at which yielding of the steel material occurs below the joining strength between the screw end and the adhesive. It is preferable to set to.

  Furthermore, the joining jig of the present invention can provide a joining jig having a stable breaking strength by using a steel material having a yield ratio of 80% or less, such as ordinary steel or low yield point steel.

  In addition, the joining structure of the present invention is not limited to the numerical values described above, and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Joining structure 2, 3, 4 Building member 5 Joining jig | tool 9, 13, 15, 16 Jig insertion hole 10 Adhesive 21 Screw end part 25 Hollow part

Claims (5)

A joining structure for joining at least two building members,
The building member is provided with a jig insertion hole into which a joining jig is inserted,
The jig insertion hole is inserted with a bonding jig and filled with an adhesive for fixing the bonding jig and the building member,
The joining jig inserted into the jig insertion hole includes a cylindrical main body, an intermediate shaft, and a screw end.
The screw structure is provided with a rolled screw, and the screw structure is a joining structure. The joint structure according to claim 1,
A joining structure characterized in that an inner periphery of the joining jig has a hollow portion into which an adhesive can be poured. The joint structure according to claim 1 or 2,
A slit portion is provided in the intermediate shaft portion of the joining jig,
The joint structure according to claim 1, wherein an outer diameter of the slit portion is smaller than that of the screw end portion. The joint structure according to claim 1,
An adhesive injection hole for injecting an adhesive into the jig insertion hole is formed in the building member. The joint structure according to claim 4,
An adhesive discharge hole for discharging the adhesive injected from the adhesive injection hole to the jig insertion hole is formed in the building member.

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