JP6688623B2 - Axial force transmission structure - Google Patents

Description

  The present invention relates to an axial force transmission structure.

  Patent Document 1 listed below discloses a seismic reinforced structure in which wooden braces are crossed at a joint (notch) and the intersections are fixed with nails, bolts and nuts.

JP 2000-220303 A (FIG. 5)

  However, in the seismic retrofit structure of Patent Document 1, the axial force of one brace acts on the other brace as a compressive force, so that the intersection is easily damaged.

  The present invention has been made in view of the above facts, and an object thereof is to provide an axial force transmission structure in which an intersection is less likely to be damaged.

The axial force transmission structure according to claim 1, wherein a wooden through brace , a wooden split brace formed by including split members arranged to face each other across the through brace , and a through hole formed in the through brace. A hole, and an axial force transmission member that is inserted into the through hole and that transmits the axial force of one of the split members to the other of the split members as an axial force.
Is equipped with.

  According to the axial force transmission structure of the first aspect, the axial force of the split member is transmitted by the axial force transmission member at the intersection of the through member and the split member. Therefore, the through member has a structure in which the axial force of the split member does not act, and the crossing portion is less likely to be damaged.

  On the other hand, for example, in a structure in which two members are cut out and intersect with each other, the axial force of one member acts on the side surface of the other member as a compressive force, so that the intersection is easily damaged.

  Therefore, in the axial force transmission structure according to the first aspect, it is possible to secure the proof stress at the intersection, as compared with the structure in which two members are cut out and joined to each other.

Further, in the axial force transmitting structure according to claim 1, the through member and the dividing member are brace members.

According to the axial force transmitting structure of claim 1 , when the frame is deformed and a compressive force acts on the through member or the dividing member, the intersecting portion is reached before the compressive force reaches the allowable compressive stress of the through member or the dividing member. Is prevented from being destroyed in advance. Therefore, the through member and the dividing member can sufficiently exert the compressive strength. Therefore, the through member and the dividing member can effectively function as a compression brace.

Further, the wooden brace member has high strength in the fiber direction, but is vulnerable to a force from a direction intersecting the fiber direction. By transmitting the axial force of the dividing member via the axial force transmitting member at the intersection of the dividing member and the passing member which is a wooden brace member, the passing member is less likely to receive the compressive force from the direction intersecting the fiber direction. . Therefore, the proof stress of the axial force transmission structure is secured.
In the axial force transmitting structure according to the second aspect, the connecting pin is inserted into the insertion hole formed in the side surface of the through brace and the end surface of the dividing member .

  The axial force transmission structure according to claim 3 is the axial force transmission structure according to claim 1 or 2, further comprising a steel plate disposed on an end surface of the split member, the axial force transmission member penetrating the through hole. Then, the round steel is joined to the steel plate.

According to the axial force transmitting structure of the third aspect, by disposing the steel plate on the end surface of the dividing member, the axial force transmitted through the round steel is evenly distributed to the dividing member. Further, since round steel does not have a weak axis direction as compared with flat steel, buckling is less likely to occur, and proof stress at the intersection of the brace members can be secured.
The axial force transmitting structure according to claim 4 is the axial force transmitting structure according to any one of claims 1 to 3, wherein a pressing member is joined to the split brace to apply an axial compressive force. .
An axial force transmitting structure according to a fifth aspect is the axial force transmitting structure according to any one of the first to fourth aspects, in which the through brace is formed by connecting a plurality of members.
The axial force transmission structure according to claim 6 is the axial force transmission structure according to any one of claims 1 to 5, wherein a buried member is disposed between the through brace and the dividing member. ing.

  According to the axial force transmission structure of the present invention, it is possible to obtain an excellent effect that the intersecting portion is hard to be damaged.

FIG. 1 is an elevational view showing a brace and a column / beam structure to which an axial force transmission structure according to a first embodiment of the present invention is applied. It is an exploded sectional view showing composition of a through brace to which an axial force transmission structure concerning a 1st embodiment of the present invention was applied. It is an exploded perspective view showing composition of an intersection of a through brace and a division brace to which an axial force transmission structure concerning a 1st embodiment of the present invention was applied. It is an elevation view showing a procedure of attaching a brace to which an axial force transmission structure according to a first embodiment of the present invention is applied to a column-beam frame, and (A) is a first example of joining a brace body to a column-beam joint. The connecting part and the upper member are shown attached, (B) shows the state where the crossing unit is attached to the upper member of the through brace, and (C) is between the upper member of the split brace and the intersecting unit. The state where the dividing member is attached is shown, (D) shows the state where the lower member of the through brace and the pressing member for applying the axial compression force to the lower member are attached to the intersection unit, (E) shows the dividing member of the dividing brace, The lower member and a pressing member for applying an axial compressive force to the lower member are attached to the intersection unit. It is sectional drawing which shows the pressing member of the brace to which the axial force transmission structure which concerns on 1st Embodiment of this invention is applied. It is sectional drawing which showed the beam-column joint part of the beam beam structure to which the axial force transmission structure which concerns on 2nd Embodiment of this invention was applied, (A) the wooden column and the wooden beam were connected by the connection pin. It is a vertical cross-sectional view showing a state, (B) is a vertical cross-sectional view showing a state in which round steel is passed through a through hole of a wooden beam, and (C) is a horizontal cross-sectional view showing the arrangement of the round steel. FIG. 9 is an exploded partial cross-sectional view showing an axial force transmission structure according to a modified example of the present invention, in which (A) the fiber direction of the joining member is substantially the same as the axial direction of the upper member and the lower member of one brace. (B) shows the case where the fiber direction of the joining member is different from the axial direction of the upper member and the lower member.

[First Embodiment]
As shown in FIG. 1, the axial force transmission structure of the first embodiment is installed between column-beam joints of a column-beam frame structure 10 formed by reinforced concrete columns 12 and beams 14 bridged over the columns 12. Applies to a wooden brace 20.

(Brace)
The brace 20 is a seismic strengthening member for performing seismic reinforcement of the beam-column frame structure 10. The brace 20 is diagonally disposed between the beam-column joints 15 and 16, and is diagonally disposed between the beam-column joints 17 and 18. A split brace 24 that is split at the intersection with the through brace 22 is included.

(Through brace)
As shown in the exploded view of FIG. 2, the through brace 22 includes a first connecting portion 30, an upper member 42, an intermediate member 44, a lower member 46, and a second connecting portion 50. The upper member 42, the middle member 44, and the lower member 46 are made of a laminated material whose fiber direction substantially coincides with the axial direction L1. The laminated wood may be a solid wood cut from a log.

The first connecting portion 30 is formed of a wooden joining member 32 provided in contact with the end portion of the upper member 42, and an adhesive agent for adhesively fixing the joining member 32 to the beam-column joining portion 15 (see FIG. 1). And an adhesive layer 34. The joining member 32 has a tip portion formed at a substantially right angle so that the joining member 32 can be integrally bonded and fixed to the beam-column joining portion 15 via the adhesive layer 34.

  Although the first connecting portion 30 is provided between the upper member 42 and the beam-column joint portion 15 in the present embodiment, the embodiment of the present invention is not limited to this. For example, the end portion of the upper member 42 may be directly joined to the beam-column joining portion 15 without providing the first connecting portion 30.

  Insertion holes 32A and 42A are formed in the central portions of the end faces where the joining member 32 and the upper member 42 are in contact with each other, and a connecting pin 48 made of steel is inserted into the insertion holes 32A and 42A to join the joining member 32 and the upper member. 42 is positioned and connected.

  In the present embodiment, the insertion holes 32A and 42A are formed in the center of the end surface where the joining member 32 and the upper member 42 contact each other, but the embodiment of the present invention is not limited to this. For example, the insertion holes 32A and 42A may be formed at two or more locations in the center of the end surface where the joining member 32 and the upper member 42 contact each other, and two or more connecting pins 48 may be inserted. By doing so, it is possible to suppress relative rotation of the joining member 32 and the upper member 42 around the connecting pin 48. In the present embodiment, all the places to which the connecting pins 48 are applied can be formed with a plurality of insertion holes, and two or more connecting pins 48 can be inserted.

  Similarly, insertion holes 42A and 44A are formed in the central portions of the end faces where the upper member 42 and the middle member 44 are in contact with each other, and the connecting pin 48 is inserted and positioned and connected. Further, insertion holes 44A and 46A are also formed in the central portions of the end faces where the middle member 44 and the lower member 46 are in contact with each other, and the connecting pins 48 are inserted and positioned and connected.

  The second connecting portion 50 includes a base member 52 made of a steel plate fixed to the end surface of the lower member 46 with a lag screw 51, a pressing member 56 provided with a compression coil spring 54, and a pressing member 56 with the beam-column joint portion 16 ( 1) and a connection block 58 made of mortar. The pressing member 56 includes a steel fixed plate 56A and a steel tubular bottomed member 56B that is provided in the center of the fixed plate 56A and that projects toward the side opposite to the lower member 46. The compression coil spring 54 is inserted into the tubular bottomed member 56B, and the end portion thereof projects from the tubular bottomed member 56B in a free state.

(Split brace)
As shown in FIG. 1, the split brace 24 includes a first connecting portion 31, an upper member 62, split members 64 and 66, a lower member 68, and a second connecting portion 53. The upper member 62, the dividing members 64 and 66, and the lower member 68 are formed of a laminated material whose fiber direction substantially coincides with the axial direction L2. The configurations of the first coupling portion 31 and the second coupling portion 53 are the same as the configurations of the first coupling portion 30 and the second coupling portion 50, respectively. The structure of the intersection between the split brace 24 and the through brace 22 will be described later.

  In the present embodiment, the split brace 24 has a structure in which the parts other than the first connecting portion 31 and the second connecting portion 53 are divided into four (upper member 62, dividing members 64, 66 and lower member 68). However, the embodiment of the present invention is not limited to this. For example, if the brace is long, the structure may be divided into six or eight.

  Insertion holes 31A and 62A are formed in the central portions of the end faces where the first connecting portion 31 and the upper member 62 are in contact with each other, and the connecting pin 48 is inserted into the insertion holes 31A and 62A to connect the first connecting portion 31 and the upper portion. The member 62 is positioned and connected.

Similarly, insertion holes 62A and 64A are respectively formed in the central portions of the end faces where the upper member 62 and the dividing member 64 are in contact with each other, and the connecting pins 48 are inserted and positioned and connected. Insertion holes 66A and 68A are formed in the end faces where the split member 66 and the lower member 68 are in contact with each other, and the connecting pins 48 are inserted and positioned and connected.

(Intersection)
FIG. 3 shows an exploded view of the intersection of the through brace 22 and the split brace 24 in which the axial direction of the split brace 24 is arranged as the vertical direction of the paper surface. At the intersection of the through brace 22 and the split brace 24, the middle member 44 of the through brace 22 is a through member, and the split members 64 and 66 of the split brace 24 are arranged to face each other with the middle member 44 interposed therebetween.

  Four through holes 44B are formed on the side surface of the middle member 44 along the axial direction of the split brace 24, and round steel 70 as an axial force transmitting member is passed through each of the through holes 44B. Both end surfaces 70B of the round steel 70 project from the through holes 44B, and the projecting portions penetrate through the through holes 72B of the wedge-shaped embedded wood members 72 arranged on both side surfaces of the intermediate member 44.

  The end surface 70B of the round steel 70 and the end surface 72C of the embedded member 72 are flush with each other, and the steel plate 74 is arranged so as to contact the end surface 70B. Through holes 74A, 72A are formed in the central portions of the steel plate 74 and the buried member 72, respectively, and insertion holes 44C, 64A, 66A are formed in the central portions of the side surfaces of the intermediate member 44 and the end surfaces of the dividing members 64, 66, respectively. Has been formed. The connecting pin 48 is inserted into the insertion hole 64A, the through holes 74A and 72A, and the insertion hole 44C, and the division member 64, the steel plate 74, the padding member 72, and the middle member 44 are positioned and connected.

  Similarly, the connecting pin 48 is inserted into the insertion hole 66A, the through holes 74A and 72A, and the insertion hole 44C to position and connect the dividing member 66, the steel plate 74, the burying member 72, and the middle member 44.

  In the first embodiment, the sectional shape of the steel plate 74 is substantially the same as the sectional shape of the split members 64 and 66, but the embodiment of the present invention is not limited to this. For example, the sectional shape may be smaller than that of the dividing members 64 and 66. By doing so, the periphery of the steel plate 74 can be covered with the same wood as that of the dividing members 64 and 66, and the design of the brace 20 can be enhanced.

(Brace assembly method)
When the brace 20 to which the axial force transmitting structure of the first embodiment is applied is attached to the beam structure 10, the constituent members of the brace 20 are assembled before the attachment. First, the pressing member 56 is joined to the lower member 46 of the through brace 22 shown in the exploded view of FIG. Specifically, the base member 52 is fixed to the end surface of the lower member 46 by the lag screw 51.

Next, the compression coil spring 54 is housed in the cylindrical bottomed member 56B so that the tip of the compression coil spring 54 projects from the fixing plate 56A of the pressing member 56.

  Next, the compression coil spring 54 is sandwiched between the base member 52 and the pressing member 56, and the pressing member 56 is arranged so as to face the base member 52. In this state, the through-hole formed in the base member 52. The bolt member 59 is penetrated through 52A, and the end portion of the bolt member 59 is screwed into the female screw portion of the cap nut 57 provided on the fixing plate 56A. By screwing and tightening the bolt member 59 into the female screw portion of the cap nut 57, the compression coil spring 54 is compressed and the fixing plate 56A of the pressing member 56 is brought into close contact with the base member 52.

  Through the above steps, the pressing member 56 is joined to the lower member 46 of the through brace 22. The pressing member 56 is also joined to the lower member 68 of the split brace 24 by the same process (see FIG. 1).

  Further, as shown in the upper side of the paper surface of FIG. 3, the round steel 70 is inserted into the through hole 44B of the middle member 44 and the through hole 72B of the filling member 72, and the through hole 74A of the steel plate 74 and the through hole of the filling member 72 are inserted. 72A, the connecting pin 48 is inserted into the insertion hole 44C of the intermediate member 44, and the intermediate member 44, the embedded member 72, and the steel plate 74 are assembled.

Similarly, as shown in the lower side of the paper surface of FIG. 3, the connecting pin 48 is inserted into the through hole 74A of the steel plate 74, the through hole 72A of the embedded member 72, and the insertion hole 44C of the intermediate member 44 to insert the intermediate member 44 and the embedded tree. The member 72 and the steel plate 74 are assembled.

  Through the above steps, the intersection unit 80 in which the middle member 44 of the through brace 22, the round steel 70, the embedded member 72, and the steel plate 74 are assembled is formed.

(How to attach brace)
When the brace 20 is attached to the beam structure 10, as shown in FIG. 4 (A), an adhesive such as an epoxy resin adhesive is applied to the tip surface of the joining member 32, and the adhesive formed by this adhesive is applied. The joining member 32 is adhesively fixed to the beam-column joining portion 15 by the layer 34 to form the first connecting portion 30. Then, the connecting pin 48 is inserted into the insertion hole 42A formed in the end surface of the upper member 42 and the insertion hole 32A formed in the end surface of the joining member 32 to connect the upper member 42 and the first connecting portion 30. .

  Similarly, the joining member 32 is also adhesively fixed to the beam-column joining portion 17 by the adhesive layer 34 to form the first connecting portion 31. Then, the connecting pin 48 is inserted into the insertion hole 62A formed in the end surface of the upper member 62 and the insertion hole 31A formed in the end surface of the first connecting portion 31 to connect the upper member 62 and the first connecting portion 31. Link.

  Note that no adhesive is applied to the insertion holes 31A, 32A, 42A, 62A and the connecting pin 48. Further, no adhesive is applied to the joint surface between the joint member 32 and the upper members 42 and 62. That is, the upper members 42 and 62 are not fixed to the joining member 32, but in the state shown in FIG. 4 (A), they are placed on a pedestal (not shown) and temporarily fixed. In the present embodiment, the members connected by using the connecting pin 48 are not bonded to each other.

Next, as shown in FIG. 4B, the intersection unit 80 in which the middle member 44, the embedded member 72, and the steel plate 74 are assembled is attached to the upper members 62 and 42. Specifically, first, the connecting pin 48 is inserted into the insertion hole 42A formed in the end surface of the upper member 42 and the insertion hole 44A formed in the end surface of the middle member 44 to connect the upper member 42 and the middle member 44 to each other. To connect.

Next, as shown in FIG. 4C, the dividing member 64 is connected between the upper member 62 and the intersection unit 80. Specifically, the connecting pin 48 is inserted into the insertion hole 62A formed in the end surface of the upper member 62 and the insertion hole 64A formed in the end surface of the dividing member 64 to connect the upper member 62 and the dividing member 64. To do. Further, the connecting pin 48 (see FIG. 3) inserted into the through hole 74A of the steel plate 74, the through hole 72A of the embedded member 72, and the insertion hole 44C of the middle member 44 in the intersection unit 80 is attached to the end surface of the dividing member 64. It inserts in the formed insertion hole 64A and connects the intersection unit 80 and the division member 64.

Next, as shown in FIG. 4D, the lower member 46 to which the pressing member 56 is joined is attached to the intersection unit 80. Specifically, the connecting pin 48 is inserted into the insertion hole 44A formed in the end surface of the middle member 44 and the insertion hole 46A formed in the end surface of the lower member 46 to connect the middle member 44 and the lower member 46. To do.

Next, as shown in FIG. 4 (E), the connecting pin 48 (FIG. 4) inserted into the through hole 74A of the steel plate 74, the through hole 72A of the embedded member 72, and the insertion hole 44C of the middle member 44 in the intersection unit 80 (FIG. 3) is inserted into the insertion hole 66A formed in the end surface of the dividing member 66 to connect the intersection unit 80 and the dividing member 66. Further, the connecting pin 48 is inserted into the insertion hole 66A formed in the end surface of the dividing member 66 and the insertion hole 68A formed in the end surface of the lower member 68 to connect the dividing member 66 and the lower member 68.

  Next, a mold (not shown) is assembled to the beam-column joints 16 and 18, and mortar is filled between the beam-column joints 16 and 18 and the pressing member 56. The pressing member 56 is fixed to the beam-column joint portions 16 and 18 by hardening the mortar to form the connection block 58. As a result, the second connecting portions 50 and 53 shown in FIG. 1 are formed.

  Next, as shown in FIG. 5, the bolt member 59 of the pressing member 56 joined to the lower member 68 is loosened and removed from the base member 52 and the pressing member 56. As a result, the axial compression force is applied to the lower member 68 by the repulsive force of the compression coil spring 54, and the axial compression force acts on the entire split brace 24 shown in FIG. At this time, the axial compression force is transmitted between the dividing member 64 and the dividing member 66 via the round steel 70 and the steel plate 74. As shown in FIG. 5, the base member 52 is housed in a frame member 56C formed at the end of the pressing member 56. As for the height of the frame member 56C, when the tensile force acts on the split brace 24 and the compression coil spring 54 expands and the base member 52 and the pressing member 56 are separated by the maximum distance assumed by the design, the base member 52 is The height is set to be accommodated in the frame member 56C.

  Similarly, the bolt member 59 (see FIG. 2) of the pressing member 56 joined to the lower member 46 is loosened and removed. As a result, the axial compression force acts on the entire through brace 22 shown in FIG.

  Through the above steps, the brace 20 of the first embodiment is attached to the post beam frame structure 10.

(Action and effect)
According to the axial force transmitting structure of the first embodiment, the repulsive force of the compression coil spring 54 constantly applies the compressive force to the through brace 22 and the split brace 24. For this reason, it is possible to prevent the members connected by the connecting pin 48 from being separated from each other without being bonded to each other.

  Further, even when a tensile force acts on the through brace 22 or the split brace 24, the compression coil spring 54 continues to press the base member 52 while extending, as shown in FIG. 5, so that the through brace 22 or the split brace 24 is compressed. It is possible to maintain a state of applying force. Further, since the base member 52 is housed in the frame member 56C, it is possible to prevent the base member 52 from jumping out in the out-of-plane direction of the post beam frame 10 (for example, the front direction or the rear direction in the plane of FIG. 1). Therefore, the brace 22 is unlikely to collapse.

  A steel plate 74 is arranged between the round steel 70 and the split members 64 and 66. Therefore, the axial compressive force acting on the round steel 70 can be dispersed and transmitted to the split members 64 and 66. Therefore, as compared with the case where the steel plate 74 is not provided, the axial force is uniformly applied to the dividing members 64 and 66, so that the dividing members 64 and 66 are less likely to be locally damaged.

  Although the steel plate 74 is used in the present embodiment, if local breakage does not occur in the dividing members 64 and 66, it is omitted and the round steel 70 and the dividing members 64 and 66 are in direct contact with each other. You can also do it. Omission of the steel plate 74 simplifies the structure and improves workability.

  The through brace 22 is configured by combining the upper member 42, the middle member 44, and the lower member 46, and the split brace 24 is configured by including the upper member 62, the split members 64, 66, and the lower member 68. That is, the braces 22 and 24 are formed by connecting a plurality of members. Therefore, when the entire length of the braces 22 and 24 is long, or when the cross-sectional size is large, the length per member can be shortened and the weight can be reduced. Therefore, it is possible to carry using an existing elevator or the like without using a crane or the like.

[Second Embodiment]
Next, an axial force transmission structure according to the second embodiment of the present invention will be described. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

  As shown in FIGS. 6A to 6C, the axial force transmission structure according to the second embodiment is applied to the joint between the wooden column 82 and the wooden beam 84. 6A is a sectional view taken along the line AA in FIG. 6C, and FIG. 6B is a sectional view taken along the line BB in FIG. 6C.

  As shown in FIG. 6A, the wooden beam 84 is a through member at the joint between the wooden column 82 and the wooden beam 84, and the wooden columns 82 are arranged facing each other with the wooden beam 84 sandwiched from above and below. . The wooden columns 82 and the wooden beams 84 are made of laminated wood whose fiber directions substantially match the axial directions L3 and L4, respectively.

  As shown in FIG. 6B, four through holes 84B are formed in the wooden beam 84 along the axial direction of the wooden columns 82, and round steel 70 is passed through each of the through holes 84B.

  The end surface 70B of the round steel 70 is flush with the upper surface 84C and the lower surface 84D of the wooden beam 84, and the steel plate 74 is arranged so as to contact the end surface 70B. The wooden column 82 is connected to the wooden beam 84 via the steel plate 74.

  As shown in FIG. 6 (A), a through hole 74A is formed in the central portion of the steel plate 74, and the end faces 82B of the wooden columns 82, the upper surface 84C of the wooden beams 84, and the lower surface 84D are inserted holes 82A, 84A, respectively. 84A is formed. The connecting pin 48 is inserted into the insertion holes 82A and 84A and the through hole 74A to position the wooden column 82, the steel plate 74, and the wooden beam 84, and the lateral relative movement of the wooden column 82 and the wooden beam 84 is suppressed.

(effect)
The axial force transmission structure of the second embodiment is applied to the joint portion between the wooden column 82 and the wooden beam 84, and the axial compressive force acting on the wooden column 82 is transmitted via the round steel 70. Therefore, the wooden beam 84 does not receive a compressive force from the direction orthogonal to the axial direction (fiber direction). Therefore, the compressive deformation of the wooden beam 84 is suppressed, and the proof stress of the joint between the wooden column 82 and the wooden beam 84 can be secured.

  In addition, since the wooden beam 84 is a through member, the wooden beam 84 has a higher degree of fixation compared to the case where the wooden beam 84 is divided at the joint between the wooden column 82 and the wooden beam 84. Therefore, since the bending moment that the wooden beam 84 bears at the joint with the wooden column 82 can be increased, the bending of the central portion of the wooden beam 84 can be reduced.

  In the second embodiment, the connecting pin 48 is used to suppress the relative movement of the wooden column 82 and the wooden beam 84, but the connecting pin 48 does not necessarily have to be used. For example, after arranging the wooden pillar 82 and the wooden beam 84 at the design position, the joint between the wooden pillar 82 and the wooden beam 84 may be fixed from the outside with a metal object and a screw.

  Alternatively, a plurality of connecting pins 48 may be used. In this case, for example, by providing the connecting pin 48 between the round steel bars 70 that are adjacent to each other in the vertical direction and the horizontal direction of the paper surface of FIG. 6C, it is possible to suppress the wooden column 82 from rotating around the connecting pin 48. .

(Modification)
Next, a modified example of the above-described embodiment will be described. In the first embodiment, as shown in FIG. 3, four through holes 44B through which round steel is inserted are formed, but the embodiment of the present invention is not limited to this. If the axial compression force can be transmitted to the split members 64 and 66, the number of through holes 44B through which the round steel 70 is inserted may be three or less, or the cross-sectional area per one can be reduced to four. The above may be formed. The same applies to the through hole 84B in the second embodiment. Further, the axial force transmitting member is not limited to the round steel 70, and may be, for example, a square bar steel or a pipe having a hollow inside. Furthermore, the material is not limited to steel, and various metals and resins, which have higher compressive strength than wood, can be used.

  Further, in the first embodiment, as shown in FIG. 2, the pressing member 56 including the compression coil spring 54 is used in the second connecting portion 50, but the embodiment of the present invention is not limited to this. For example, instead of using the pressing member 56, a female screw anchor or the like may be embedded in the connecting block 58 and the base member 52 may be bolted to the connecting block 58. Even if a tensile force acts on the through brace having such a structure, the through brace does not collapse unless the connecting pin 48 comes off from the insertion holes 32A, 42A, 44A, 46A.

  In addition, in the first embodiment, as shown in FIG. 1, the through brace 22 is configured by combining the upper member 42, the middle member 44, and the lower member 46, and the split brace 24 is the upper member 62, the split members 64, 66, and the lower member. Although the member 68 is configured to be provided, the embodiment of the present invention is not limited to this. For example, the through brace 22 may be composed of a single member, or the split brace 24 may be a single member by combining the upper member 62 and the split member 64, and a single member by combining the lower member 68 and the split member 66. It may be a member of. Thus, the workability is improved by reducing the number of members.

  Further, in the first embodiment, the long middle member 44 that constitutes the through brace 22 is configured as a through member at the intersection of the through brace 22 and the split brace 24, but the embodiment of the present invention is not limited to this. Absent. For example, as shown in FIG. 7 (A), the axial dimension of the intermediate member 44 is reduced to form a block shape, and the joining member 440 in which the embedded member 72 (see FIG. 1) is integrated is inserted. It may be a member. At this time, the upper member 42, the lower member 46, and the dividing members 64 and 66 are positioned on the joining member 440 using the connecting pins 48, respectively. That is, the axial force transmission structure of the present invention is not limited to long members such as braces and column beams, but may be block-shaped joining members to which braces and column beams are joined.

  In this modification, the fiber direction of the joining member 440 is substantially the same as the axial direction L5 of the upper member 42 and the lower member 46. When the fiber direction of the joining member 440 is different from the axial direction L5 of the upper member 42 and the lower member 46, for example, as shown in FIG. 7B, the joining member 440 has a shaft of the upper member 42 and the lower member 46. By disposing the round steel 70 also in the direction along the direction L5, it is possible to suppress the breakage of the joining member 440.

44 Middle member (through member)
44B Through holes 64, 66 Division member 70 Round steel (axial force transmission member)
74 Steel plate 82 Wooden pillar (divided member)
84 Wooden beam (through member)
84B through hole

Claims (6)

Wooden through brace ,
A wooden split brace formed to include split members arranged to face each other across the through brace ,
A through hole formed in the through brace ,
An axial force transmission member that is inserted into the through hole and that transmits the axial force of one of the division members to the other of the division members as an axial force.
Axial force transmission structure with. The axial force transmission structure according to claim 1 , wherein a connecting pin is inserted into an insertion hole formed in a side surface of the through brace and an end surface of the split member . A steel plate disposed on the end surface of the dividing member,
The axial force transmission member is a round steel that is joined to the steel plate through the through hole,
The axial force transmission structure according to claim 1. The axial force transmission structure according to any one of claims 1 to 3, wherein a pressing member is joined to the split brace to apply an axial compressive force.   The through brace is formed by connecting a plurality of members,
  The axial force transmission structure according to any one of claims 1 to 4.   A buried wood member is arranged between the through brace and the dividing member,
  The axial force transmission structure according to any one of claims 1 to 5.