JP7187188B2 - Joint structure of wooden shaft members - Google Patents

Description

The present invention relates to a joint structure for wooden shaft members.

In wooden buildings constructed using the wooden frame construction method, wooden shaft members that form columns, beams, foundations, etc., are joined together using joint metal fittings (drift pins) to improve earthquake resistance, etc. is planned.

An example of a structure for joining pillars and beams of a wooden building and a joint metal fitting applied to this joint structure using the joint metal fitting described above has been proposed. Specifically, it has a column joint plate inserted into the vertical hole of the column on one side of the side plate overlaid on the side of the column, and a beam joint plate into which the longitudinal groove formed in the butt end of the beam is inserted on the other side. , a joint fitting is formed by providing a beam receiving plate at a lower position of the beam joint plate. A plurality of connection holes for fastening columns with fasteners are provided in the column connection plate of the connection fitting, and a plurality of connection holes are provided in the beam connection plate for fastening the beams with fasteners. The arrangement and number of holes are set according to the edge clearance condition of the steel plate used for each joint plate. Drift pins are applied to the fasteners, and a wooden rigid-frame structure is formed by connecting wooden columns and beams that form a portal frame (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2005-299150

As described above, in joining a plurality of wooden shaft members using joint fittings, increasing the number of drift pins, which are joint fittings, can be cited as a measure for improving the strength of the joint. However, increasing the number of drift pins reduces the effective cross-section of the wooden shaft member. can decrease. This splitting fracture or the like is a brittle fracture and sharply lowers the yield strength of the joint, so suppression thereof is an important issue.

Therefore, in order to improve the strength of the joint without increasing the number of drift pins, for example, instead of arranging the drift pins in a grid pattern, they are arranged randomly to make splitting fracture less likely to occur. Conceivable.

However, if the drift pins are randomly arranged, it is likely that a combination of drift pins that are very close to each other will occur, and cracks will occur in the wooden shaft member by connecting the drift pins that are close to each other. become.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a joint structure for wooden shaft members that has high joint strength and can effectively prevent splitting failure and the like.

In order to achieve the above object, one aspect of the joint structure for wooden shaft members according to the present invention is to:
A joint structure of wooden shaft members comprising a first wooden shaft member and a second wooden shaft member,
An embedded metal fitting is attached to the first wooden shaft member, and a plurality of first pin holes through which drift pins are inserted are formed in the embedded metal fitting,
The second wooden shaft member is provided with a housing groove into which the embedded metal fitting is fitted, and the second wooden shaft member further includes a plurality of the first wood shaft members in a state where the embedded metal fitting is fitted into the housing groove. A second pin hole is opened at a position corresponding to the pin hole,
An insertion hole is formed by the second pin hole corresponding to the first pin hole, the drift pin is inserted through the insertion hole, and the second wooden shaft member extends in the longitudinal direction through the plurality of insertion holes. A virtual splitting surface is formed,
In the second wooden shaft member, a tensile resistance wire is arranged in a direction orthogonal to both the longitudinal direction of the second wooden shaft member and the insertion direction of the drift pin,
The tip of the tensile resistance wire is positioned beyond the virtual split plane.

According to this aspect, the tip of the tensile resistance wire crosses (straddles) the virtual split surface formed by the plurality of insertion holes, so that the virtual split surface can be formed with as few tensile resistance wires as possible. It is possible to effectively prevent the splitting failure in the joint structure of the wooden shaft member and to form a joint structure of the wooden shaft member with high strength. In the joint structure of the wooden shaft member of this aspect, a plurality of insertion holes (and drift pins) are arranged to intentionally form a virtual split surface (a surface on which splitting is likely to be formed), and then the virtual split surface is straddled. It is based on the technical idea of preventing the actual splitting failure at the virtual splitting surface by reinforcing the virtual splitting surface with a tensile resistance wire rod arranged at the same time.

In addition, according to this aspect, by not arranging the drift pins at random, it is possible to prevent the occurrence of a combination of drift pins that are extremely close to each other. can prevent the occurrence of In this aspect, the insertion hole through which the tensile resistance wire is inserted is formed by connecting the corresponding first pin hole and second pin hole. A drift pin is inserted through the insertion hole, and a plurality of tensile resistance wires, for example, are arranged in a direction orthogonal to both the longitudinal direction of the second wooden shaft member and the insertion direction of the drift pin. Here, the "tensile resistance wire" is a wire that resists the applied tensile force, and examples thereof include screws. As the first wooden shaft member and the second wooden shaft member which are objects of the joint structure, various wooden materials such as solid wood and laminated wood using lamina can be applied.

In another aspect of the joining structure of wooden shaft members according to the present invention, the embedded metal fitting is a metal plate, and the metal plate is provided with the plurality of first pin holes arranged in a grid pattern,
The tensile resistance wire is provided on the first row surface of the drift pin farthest from the joint end of the second wooden shaft member with the first wooden shaft member, arranged at least between the side-by-side surface and
The tip of the tensile resistance wire is positioned beyond the imaginary split plane perpendicular to the first row plane, which is the farthest end in the direction in which the tensile resistance wire is arranged.

According to this aspect, in the metal plate-embedded joint structure, a lattice-shaped insertion formed by the first pin holes opened in the metal plate and the second pin holes of the second wooden shaft member Brittle fracture such as splitting fracture can be effectively suppressed in a joint structure having grid-like drift pins arranged in holes.

Here, 16 drift pins are arranged at predetermined intervals in 4 rows and 3 columns, and the tensile resistance wires are arranged in the lateral direction. For example, above the joint end of the second wooden shaft member with the first wooden shaft member, there are four rows of drift pins, each row having three drift pins arranged in the horizontal direction. Three vertically extending imaginary split planes are formed at intervals in the lateral direction by the three drift pins. In this aspect, the lined surface farthest from the joint end is defined as the first lined surface, the second lined surface is defined as the second lined surface, and at least the tension resistance between the first lined surface and the second lined surface Arrange the wires. Since splitting failure or the like can occur starting from this first lined surface, by arranging a tensile resistance wire rod between the first lined surface and the second lined surface, which are the starting points, the occurrence of splitting failure can be prevented. It can be effectively suppressed in the vicinity of the starting point.

"At least arranged between the first and second lined surfaces" means that the tensile resistance wire is arranged only between the first and second lined surfaces, and the first lined surface and the second alignment surface, as well as between other alignment surfaces. According to the verification by the inventors of the present invention, when the tensile resistance wire is arranged only between the first and second parallel surfaces, and when the tensile resistance wire is arranged between all the parallel surfaces, It has been verified that the same degree of splitting fracture suppression effect can be obtained.

Further, in this aspect, the tip of the tensile resistance wire is located beyond the imaginary split plane at the farthest end in the direction of arrangement of the tensile resistance wire. In the above example of the drift pins arranged in 4 rows and 3 columns, among the columns composed of the four vertically aligned drift pins, the four drift pins (the A corresponding through-hole) forms an imaginary split plane at the farthest end in the direction in which the tensile resistance wire is laid. That is, the virtual splitting surface at the farthest end is a surface perpendicular to the above-described first and second alignment surfaces. The fact that the tensile resistance wire is located beyond the virtual splitting plane at the farthest end in its direction of deployment means, in other words, that the tensile resistance wire extends across all rows (in the above example, three rows (three virtual splitting planes)). ))). By arranging the tensile resistance wire in this way, it is possible to arrange the tensile resistance wire so as to intersect all the virtual splitting planes, and it is possible to suppress splitting failure on all the virtual splitting planes. Become. For example, when the tensile resistance wire is formed by screws, by applying full-thread type screws, for example, one screw can suppress splitting failure on all virtual splitting surfaces.

In another aspect of the joining structure of wooden shaft members according to the present invention, the embedded fitting is a hozopipe, and the plurality of first pin holes are formed in the hozopipe,
The tip of the tensile resistance wire is positioned beyond the virtual split plane.

According to this aspect, the embedded metal fitting is a tenon pipe, and the insertion hole formed by the first pin hole opened in the ten pipe and the corresponding second pin hole of the second wooden shaft member. By arranging the tensile resistance wire, it is possible to effectively prevent brittle fracture such as splitting fracture even in the tenon pipe-embedded joint structure.

Another aspect of the joining structure of wooden shaft members according to the present invention is characterized in that the tensile resistance wire is one of screws, nails, bolts, and reinforcing bars.

According to this aspect, a high-strength joint structure can be formed at the lowest possible cost by using general-purpose wires such as screws that have a desired tensile resistance. Here, as described above, when a screw is used as the tensile resistance wire, a full-thread type screw is suitable. Further, when a bolt is applied as the tensile resistance wire, for example, the insertion hole formed by the first pin hole and the second pin hole is used as a through hole passing through the second wooden shaft member, and the headed bolt is inserted into this through hole. The bolt can be attached by, for example, inserting the bolt and tightening the end of the bolt with a nut. In addition, when a reinforcing bar (including deformed steel bar, round bar, PC steel wire, etc.) is applied as the tensile resistance wire, after inserting the reinforcing bar into the insertion hole, an adhesive or adhesive is applied between the reinforcing bar and the insertion hole. Reinforcing bars can be attached by filling with a binding agent such as mortar.

In another aspect of the joint structure of wooden shaft members according to the present invention, the first wooden shaft member and the second wooden shaft member are:
(A) one is a wooden post and the other is a wooden beam to which the wooden post is joined;
(B) a configuration in which both are wooden beams joined together;
(C) a configuration in which either one is a brace and the other is a wooden beam or column to which the brace is joined;
It is characterized by being in the form of any one of

According to this aspect, it is possible to obtain a joint structure capable of effectively suppressing splitting fracture and the like in joint structures of wooden shaft members for various uses. That is, regarding a wooden building constructed by a wooden frame construction method in which drift pins are applied to the joints of a plurality of wooden shaft members, it is possible to form a wooden building with high joint strength and excellent earthquake resistance.

As can be understood from the above description, according to the wooden shaft member joint structure of the present invention, the strength of the joint portion is high, and splitting failure and the like can be effectively suppressed.

FIG. 2 is an exploded perspective view of the wooden shaft member joining structure according to the first embodiment before assembly; 1 is a perspective view showing a joining structure of wooden shaft members according to a first embodiment; FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram for explaining the technical concept of a joining structure of wooden shaft members according to an embodiment, wherein (a) is a conceptual diagram in which a virtual splitting surface is formed, and (b) is a conceptual diagram in which a virtual splitting surface is formed; It is a conceptual diagram explaining that a tensile resistance wire is arrange|positioned, (c) is a figure corresponding to (b), Comprising: It is a conceptual diagram explaining the arrangement|positioning form of another tensile resistance wire. FIG. 4 is a perspective view showing a modification of the joint structure of the wooden shaft member according to the first embodiment; FIG. 11 is an exploded perspective view of the wooden shaft member joining structure according to the second embodiment before assembly; FIG. 7 is a perspective view showing a joint structure of wooden shaft members according to a second embodiment; 7 is a view in the direction of arrow VII in FIG. 6; FIG.

Hereinafter, joint structures for wooden shaft members according to respective embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in the present specification and drawings, substantially the same components may be denoted by the same reference numerals, thereby omitting duplicate descriptions.

[Joint structure of wooden shaft member according to first embodiment]
First, referring to FIGS. 1 to 3, a joint structure of wooden shaft members according to a first embodiment will be described. Here, FIG. 1 is an exploded perspective view of the wooden shaft member joint structure according to the first embodiment before assembly, and FIG. 2 is a perspective view showing the wooden shaft member joint structure according to the first embodiment. It is a diagram. 3A and 3B are conceptual diagrams for explaining the technical idea of the joining structure of the wooden shaft members according to the embodiment, FIG. ) is a conceptual diagram explaining that a tensile resistance wire is arranged so as to penetrate the virtual splitting surface. Furthermore, FIG. 3(c) is a diagram corresponding to FIG. 3(b) and is a conceptual diagram for explaining another arrangement form of the tensile resistance wire.

A joint structure 100 of wooden shaft members according to the present embodiment is a joint structure between a first wooden shaft member 10 that is a wooden floor beam (an example of a wooden beam) and a second wooden shaft member 20 that is a wooden pillar. . Both the first wooden shaft member 10 and the second wooden shaft member 20 may be made of solid wood, or laminated wood with laminated lamina.

An embedded fitting 30 is attached to the first wooden shaft member 10 . The embedded metal fitting 30 is connected to a pair of opposed mounting plates 32 and 33 which are rectangular in plan view, and a wide surface of one of the mounting plates 32 by welding or the like. It has a rectangular embedding plate 31 (an example of a metal plate) and mounting bolts 34 connecting a pair of mounting plates 32 and 33 together. In the illustrated example, the mounting plates 32 and 33 have two mounting bolts 34 at two positions on a diagonal line sandwiching the embedded plate 31. may have four mounting bolts in the In the illustrated example, the wide surface of the embedded plate 31 is arranged parallel to the axial direction of the first wooden shaft member 10, but the wide surface of the embedded plate 31 extends in the direction perpendicular to the axis of the first wooden shaft member 10. It may be arranged.

Mounting plates 32 and 33 are provided on the upper and lower surfaces of the ends of the first wooden shaft member 10 , and mounting bolts 34 are inserted into two bolt holes (not shown) formed in the first wooden shaft member 10 . The embedded metal fitting 30 is tightened with respect to the first wooden shaft member 10 by inserting them respectively and tightening them with nuts. The embedded metal fitting 30 may have various configurations other than the illustrated example, and the mounting plates 32 and 33 are integrally connected by a bent metal plate (not shown) at the center, so that the rigidity as a whole is increased. It may be a raised embedded metal fitting or the like.

The embedded plate 31 is provided with a plurality of first pin holes 35 through which a plurality of drift pins are inserted. In the illustrated example, nine first pin holes 35 are arranged in a grid pattern of 3 rows and 3 columns at predetermined intervals.

In the center position of the lower end surface of the second wooden shaft member 20, a housing groove 21 into which the embedding plate 31 is fitted is provided so as to extend in the vertical direction. Further, nine pairs of second pin holes 22 are formed in the second wooden shaft member 20 at positions corresponding to the nine first pin holes 35 when the embedded plate 31 is fitted in the accommodation groove 21. It is Each set of second pin holes 22 communicates horizontally across the accommodation groove 21, and the drift pin 40 is inserted through the first pin hole 35 and the pair of second pin holes 22 corresponding to each other. A through hole is formed.

As shown in FIG. 1, the embedding plate 31 is fitted in the housing groove 21 of the second wooden shaft member 20 in the X1 direction, and then the drift pins 40 are inserted in the respective insertion holes in the X2 direction. The wooden shaft member 10 and the second wooden shaft member 20 are joined together. For this attachment, a nut accommodating groove 23 for accommodating a nut of the mounting bolt 34 is formed at the lower end of the second wooden shaft member 20. By accommodating the nut in the nut accommodating groove 23, the second wooden shaft member 20 is mounted. The lower end surface of the member 20 is in surface contact with the wide surface of the mounting plate 32 without gaps.

After the drift pins 40 are inserted into the respective insertion holes, three of the virtual planes in three rows formed by the three drift pins 40, specifically, between the top plane and the middle plane, and between the middle plane and the top plane. Between the lower surfaces and between the lowermost surface and the end surface of the second wooden shaft member 20, screw-type screws 50 (an example of a tensile resistance wire) are driven in the X3 direction. More specifically, two full-thread type screws 50 are driven into each of the left and right positions of the embedded plate 31 at each driving position, thereby forming the joint structure 100 shown in FIG. By applying the full-thread type screw 50 as the tensile resistance wire, a high-strength joint structure can be formed at the lowest possible cost. It is possible to demonstrate resistance to the tensile force applied. As the tensile resistance wire, other than the full screw type screw 50, general screws, nails, bolts, reinforcing bars, and the like can be applied.

Returning to FIG. 1, in the second wooden shaft member 20, the driving direction of the all-thread type screw 50 is the Y1 direction, which is the longitudinal direction of the second wooden shaft member 20, and the Y2 direction (Y1 and the Y2 direction are directions perpendicular to each other).

Next, with reference to FIG. 3, the design concept of the joint structure 100 according to the embodiment will be described. As shown again in FIG. 3(a), nine drift pins 40 are arranged in a grid of 3 rows and 3 columns. When a plurality of drift pins 40 are arranged in a lattice in this way, splitting fracture occurs through (through holes corresponding to) three drift pins 40 arranged at intervals in the vertical direction. becomes easier.

In the joint structure 100 according to the present embodiment, by arranging the drift pins 40 in a grid pattern in this way, virtual split planes C1, C2, and C3 including three rows of split fracture lines are purposely formed. Cleavage fracture is likely to be formed downward starting from (the insertion holes corresponding to) the three drift pins 40 in the uppermost row.

On the other hand, among the three rows of aligned surfaces formed by the three drift pins 40 arranged in the horizontal direction, the aligned surface of the top row is the upper aligned surface L1 (an example of the first aligned surface), and the aligned surface of the middle row is the middle aligned surface. L2 (an example of the second alignment surface), and the bottom alignment surface is defined as the third alignment surface L3. In FIG. 3B, the virtual splitting surface at the right end formed by the three drift pins 40 at the tip of the screw 50 in the insertion direction is the first virtual splitting surface C1, and the virtual splitting surface at the center is the second virtual splitting surface. Cleavage surface C2, and the virtual cleft surface at the left end is defined as a third imaginary cleft surface C3.

At a position between the upper row surface L1 (first row surface) and the middle row row surface L2 (second row surface), the all-thread type screw 50 is driven from the left side of the second wooden shaft member 20, and the all-thread type screw 50 is inserted. Position the tip beyond the first imaginary splitting plane C1. Similarly, between the middle row surface L2 and the lower row surface L3, and between the lower row surface L3 and the lower end surface of the second wooden shaft member 20, the tips of all the screw-type screws 50 extend beyond the first imaginary split surface C1. position. In the illustrated example, the tips of all screw-type screws 50 remain inside the second wooden shaft member 20 , but the tips of the screws may be arranged to pass through the second wooden shaft member 20 .

In this way, by positioning the tip of each screw-type screw 50 beyond the first virtual splitting surface C1 at the farthest end in the direction of arrangement, all three virtual splitting surfaces intentionally formed are arranged so that all the screw type screws 50 straddle over. With this configuration, all of the screw-type screws 50 reinforce all the virtual splitting surfaces, so that actual splitting failure at the virtual splitting surfaces can be prevented, and the joining structure 100 of the wooden shaft members with high strength is formed. . In addition, by arranging the plurality of drift pins 40 regularly in a grid pattern and not randomly arranging them, it is possible to prevent the occurrence of a combination of drift pins that are extremely close to each other. It is possible to prevent the occurrence of cracks connecting them.

FIG. 3(c) shows an embodiment in which all-thread type screws 50 are provided only at positions between the upper row surface L1 (first row surface) and the middle row row surface L2 (second row surface). As described above, splitting fracture can occur starting from the first lined surface L1, so the all-thread type screw 50 is arranged between the first lined surface L1 and the second lined surface L2 that serve as starting points. Therefore, the occurrence of splitting fracture can be effectively suppressed in the vicinity of its starting point.

The inventors made a prototype of the joint structure 100 according to the present embodiment formed by two wooden shaft members, and conducted a shear fracture test in which a load up to the yield load that the joint structure can withstand was applied. As a result, it has been demonstrated that a yield strength equivalent to that obtained when all-thread type screws 50 are arranged at three locations shown in FIG. 3(b) can be obtained.

Therefore, as shown in FIG. 3(b), all screw type screws 50 are arranged at three locations, and as shown in FIG. A configuration in which the screw-type screws 50 are arranged can be applied. Also, although illustration is omitted, a mode in which the all-thread type screws 50 are arranged at two locations between the first aligned surface L1 and the second aligned surface L2 and between the second aligned surface L2 and the third aligned surface L3. is also applicable. Since various forms other than 3 rows and 3 columns can be applied to the arrangement form of the drift pins 40, the driving form of the screws 50 depends on the arrangement form (lattice form) of the drift pins 40 to be applied. can be set.

<Modified example of joint structure of wooden shaft member>
Next, with reference to FIG. 4, a modification of the joining structure of the wooden shaft members according to the first embodiment will be described. A joint structure 100A of wooden shaft members shown in FIG. 20 is a joint structure.

On the upper and lower surfaces of the end of the first wooden shaft member 10, the embedded plate 31 is welded to the mounting plate 32 in a manner perpendicular to the mounting plate 32, and each mounting plate 32 is attached by two mounting bolts 34 positioned on a diagonal line. An embedding metal fitting 30A is formed by tightening.

In the embedded metal fitting 30A of the illustrated example, the embedded plates 31 are arranged with a 90 degree shift from each other. Therefore, two mounting bolts 34 for tightening the two mounting plates 32 can be arranged at positions on the diagonal line of the mounting plate 32 . In other words, by arranging the two embedded plates 31 with a 90 degree shift from each other, the two mounting plates 32 can be tightened with the two mounting bolts 34 without interfering with the embedded plates 31 . As shown in FIG. 4, in the upper and lower second wooden shaft members 20, the insertion directions of the drift pins 40 are deviated from each other by 90 degrees, and the driving directions of all the screw-type screws 50 are also deviated from each other by 90 degrees. .

In the joint structure 100A as well, in the upper and lower second wooden shaft members 20, the all-thread-type screws 50 are arranged so as to straddle all three virtual split surfaces, so that the all-thread-type screws 50 By reinforcing the virtual splitting surface, actual splitting failure at the virtual splitting surface can be prevented, and the joined structure 100A of the wooden shaft member with high strength is formed.

[Joint structure of wooden shaft member according to second embodiment]
Next, a joint structure of wooden shaft members according to a second embodiment will be described with reference to FIGS. 5 to 7. FIG. Here, FIG. 5 is an exploded perspective view of the wooden shaft member joint structure according to the second embodiment before assembly, and FIG. 6 is a perspective view showing the wooden shaft member joint structure according to the second embodiment. It is a diagram. Moreover, FIG. 7 is a VII direction arrow directional view of FIG.

A wooden shaft member joint structure 100B according to the present embodiment is a joint structure between a first wooden shaft member 10A, which is a wooden pillar, and a second wooden shaft member 20A, which is a wooden beam. An embedded fitting 60 is attached to the first wooden shaft member 10A. The embedded fitting 60 is connected by welding or the like to a pair of opposing mounting plates 62 and 63 which are rectangular in plan view and the wide surface of one of the mounting plates 62 , and extends in a direction orthogonal to the mounting plate 62 . It has two tenon pipes 61 and a mounting bolt 64 connecting a pair of mounting plates 62 and 63 together. That is, instead of the embedding plate 31 in the embedding fitting 30 shown in FIGS. 1 and 2, two tenon pipes 61 serve as constituent members.

Mounting plates 62 and 63 are provided on the left and right sides of the end portion of the first wooden shaft member 10A, and mounting bolts 64 are inserted into the two bolt holes 11 opened in the first wooden shaft member 10A, By tightening the nut, the embedded fitting 60 is tightened with respect to the first wooden shaft member 10A.

A plurality of first pin holes 65 (three in the illustrated example) through which a plurality of drift pins are inserted are formed in the tenon pipe 61 at intervals.

A housing groove 24 into which the tenon pipe 61 is fitted is provided so as to extend in the horizontal direction at the upper and lower positions in the center of the left end surface of the second wooden shaft member 20A. Further, the second wooden shaft member 20A further extends vertically at positions corresponding to the three first pin holes 65 of each of the tenon pipes 61 when the tenon pipes 61 are fitted in the accommodation grooves 24. Three sets of second pin holes 25 are opened. Each set of second pin holes 25 communicates in the vertical direction with each accommodation groove 24 interposed therebetween. An insertion hole is formed.

As shown in FIG. 5, the accommodation groove 24 of the second wooden shaft member 20A is fitted in the X4 direction to the hozopipe 61 of the embedded fitting 60 attached to the first wooden shaft member 10A, and then each insertion hole is fitted. The first wooden shaft member 10A and the second wooden shaft member 20A are joined together by inserting the drift pin 40 in the X5 direction from above and below. For this attachment, a nut accommodating groove 26 for accommodating the nut of the mounting bolt 64 is formed at the left end of the second wooden shaft member 20A. The left end surface of the member 20A is in surface contact with the wide surface of the mounting plate 62 without any gap.

After the drift pins 40 are inserted into the respective insertion holes, six full-thread type screws 50 are installed at the upper and lower positions of the upper and lower hozo pipes 61 between the three drift pins 40 attached to the upper and lower hozo pipes 61, respectively. By driving (an example of a tensile resistance wire) in the X6 direction, the joint structure 100B shown in FIGS. 6 and 7 is formed.

Returning to FIG. 5, in the second wooden shaft member 20A, the driving directions of the all-thread type screws 50 are the d direction which is the longitudinal direction of the second wooden shaft member 20A and the Y5 direction (Y4 direction) which is the insertion direction of the drift pin 40. and the Y5 direction are directions perpendicular to each other).

As shown in FIG. 7, the tips of all the screw-type screws 50 in the driving direction (Y6 direction) are imaginary splitting surfaces C4 formed by (through holes corresponding to) three drift pins 40 (six vertically). are placed beyond. Also in this embodiment, the tip of the screw may be arranged to pass through the second wooden shaft member 20A.

In this way, by positioning the tip of each screw-type screw 50 beyond the virtual splitting surface C4, the screw-type screw 50 is disposed so as to straddle the intentionally formed virtual splitting surface. With this configuration, all the screw-type screws 50 reinforce the imaginary splitting surface, and actual splitting failure at the imaginary splitting surface can be prevented, thereby forming a joint structure 100B of a wooden shaft member with high strength.

The joint structure 100B forms a bend-resistant joint structure. Also, although not shown, as shown in FIGS. 1 and 2, a bending resistance type joint structure in which an embedded plate is embedded in a wooden beam and fixed may be used.

It should be noted that other embodiments may be possible in which other components are combined with the configurations described in the above embodiments, and the present invention is not limited to the configurations shown here. Regarding this point, it is possible to change without departing from the gist of the present invention, and it can be determined appropriately according to the application form.

One of the first wooden shaft member and the second wooden shaft member in the illustrated example is a wooden pillar, and the other is a wooden beam to which the wooden pillar is joined. may For example, a configuration in which both the first wooden shaft member and the second wooden shaft member are wooden beams joined to each other, or one of which is a brace and the other of which is a wooden beam to which the brace is joined, or Examples include a form that is a wooden pillar.

10: First wooden shaft member (wooden beam), 10A: First wooden shaft member (wooden pillar), 20: Second wooden shaft member (wooden pillar), 20A: Second wooden shaft member (wooden beam), 21, 24: accommodation groove, 22, 25: second pin hole, 23, 26: nut accommodation groove, 30, 30A: embedded fitting, 31: embedded plate, 32, 33: mounting plate, 34: mounting bolt, 35: first Pin hole, 40: Drift pin, 50: Tensile resistance wire rod (screw, full thread type screw), 60: Embedded metal fitting, 61: Hozo pipe, 62, 63: Mounting plate, 64: Mounting bolt, 65: First pin hole, 100, 100A, 100B: joint structure (joint structure of wooden shaft member), L1: first aligned surface (upper aligned surface), L2: second aligned surface (middle aligned surface), C1: first imaginary splitting surface, C4 : Virtual split plane

Claims (5)

A joint structure of wooden shaft members comprising a first wooden shaft member and a second wooden shaft member,
An embedded metal fitting is attached to the first wooden shaft member, and a plurality of first pin holes through which drift pins are inserted are formed in the embedded metal fitting,
The second wooden shaft member is provided with a housing groove into which the embedded metal fitting is fitted, and the second wooden shaft member further includes a plurality of the first wood shaft members in a state where the embedded metal fitting is fitted into the housing groove. A second pin hole is opened at a position corresponding to the pin hole,
An insertion hole is formed by the second pin hole corresponding to the first pin hole, and the drift pin is inserted through the insertion hole so as to connect the plurality of insertion holes arranged in the longitudinal direction of the second wooden shaft member. is formed with a virtual split surface extending in the longitudinal direction of the second wooden shaft member,
In the second wooden shaft member, a tensile resistance wire is arranged in a direction orthogonal to both the longitudinal direction of the second wooden shaft member and the insertion direction of the drift pin,
The tip of the tensile resistance wire is located beyond the virtual splitting surface,
The embedded fitting has an embedded plate that is a metal plate, and the plurality of first pin holes are formed in a grid pattern in the embedded plate,
The tensile resistance wire is provided on the first row surface of the drift pin farthest from the joint end of the second wooden shaft member with the first wooden shaft member, arranged at least between the side-by-side surface and
the tip of the tensile resistance wire is located beyond the imaginary split plane perpendicular to the first lined plane at the farthest end in the direction in which the tensile resistance wire is arranged ;
The embedded metal fitting is
a pair of mounting plates facing each other across the first wooden shaft member;
the embedded plate connected to one of a pair of mounting plates and extending in a direction perpendicular to the mounting plate;
a pair of mounting bolts passing through the first wooden shaft member and connecting the pair of mounting plates;
one of the pair of mounting plates protrudes on both sides of the embedded plate in the plate thickness direction;
The pair of mounting bolts are arranged at two locations on a diagonal line sandwiching the embedding plate with respect to the pair of mounting plates,
Some of the plurality of tensile resistance wires are arranged between one of the pair of mounting plates and the drift pin closest to one of the pair of mounting plates in the longitudinal direction of the second wooden shaft member. A joint structure for wooden shaft members, characterized in that : A joint structure of wooden shaft members comprising a first wooden shaft member and a second wooden shaft member,
An embedded metal fitting is attached to the first wooden shaft member, and a drift pin is attached to the embedded metal fitting.
A plurality of first pin holes through which the pins are inserted are opened,
The second wooden shaft member is provided with a housing groove into which the embedded metal fitting is fitted, and the second wooden shaft member further includes a plurality of the first wood shaft members in a state where the embedded metal fitting is fitted into the housing groove. A second pin hole is opened at a position corresponding to the pin hole,
An insertion hole is formed by the second pin hole corresponding to the first pin hole, and the drift pin is inserted through the insertion hole so as to connect the plurality of insertion holes arranged in the longitudinal direction of the second wooden shaft member. is formed with a virtual split surface extending in the longitudinal direction of the second wooden shaft member,
In the second wooden shaft member, a tensile resistance wire is arranged in a direction orthogonal to both the longitudinal direction of the second wooden shaft member and the insertion direction of the drift pin,
The tip of the tensile resistance wire is located beyond the virtual splitting surface,
The embedded metal fitting is a metal plate, and the metal plate is provided with the plurality of first pin holes in a grid pattern,
The tensile resistance wire is provided on the first row surface of the drift pin farthest from the joint end of the second wooden shaft member with the first wooden shaft member, arranged at least between the side-by-side surface and
the tip of the tensile resistance wire is located beyond the imaginary split plane perpendicular to the first lined plane at the farthest end in the direction in which the tensile resistance wire is arranged;
A structure for joining a pair of said second wooden shaft members extending in mutually opposite directions with said first wooden shaft member interposed therebetween,
The joint structure of wooden shaft members , wherein the metal plates embedded in the pair of second wooden shaft members are arranged with a 90 degree shift from each other. A joint structure of wooden shaft members comprising a first wooden shaft member and a second wooden shaft member,
An embedded metal fitting is attached to the first wooden shaft member, and a plurality of first pin holes through which drift pins are inserted are formed in the embedded metal fitting,
The second wooden shaft member is provided with a housing groove into which the embedded metal fitting is fitted, and the second wooden shaft member further includes a plurality of the first wood shaft members in a state where the embedded metal fitting is fitted into the housing groove. A second pin hole is opened at a position corresponding to the pin hole,
An insertion hole is formed by the second pin hole corresponding to the first pin hole, and the drift pin is inserted through the insertion hole so as to connect the plurality of insertion holes arranged in the longitudinal direction of the second wooden shaft member. is formed with a virtual split surface extending in the longitudinal direction of the second wooden shaft member,
In the second wooden shaft member, a tensile resistance wire is arranged in a direction orthogonal to both the longitudinal direction of the second wooden shaft member and the insertion direction of the drift pin,
The tip of the tensile resistance wire is located beyond the virtual splitting surface,
The embedded fitting has a pair of tenon pipes, and the pair of tenon pipes are provided with the plurality of first pin holes,
The tip of the tensile resistance wire is located beyond the virtual splitting surface,
The pair of tenon pipes are welded to the mounting plate and attached to the first wooden shaft member via the mounting plate disposed between the first wooden shaft member and the second wooden shaft member. A joint structure for wooden shaft members, characterized by: 4. The joining structure of wooden shaft members according to claim 1, wherein said tensile resistance wire is one of screws, nails, bolts and reinforcing bars. The first wooden shaft member and the second wooden shaft member are
(A) one is a wooden post and the other is a wooden beam to which the wooden post is joined;
(B) a configuration in which both are wooden beams joined together;
(C) a configuration in which either one is a brace and the other is a wooden beam or column to which the brace is joined;
5. The joining structure of wooden shaft members according to claim 1, characterized in that it is in the form of any one of:

Images