JP6532144B2 - Column connection structure - Google Patents

Description

  The present invention mainly relates to a joint structure of columns in a wooden building.

  In a wooden structure, particularly in a wooden house, even if ventilation under the first floor is taken into consideration, pillars erected on the foundation, including the foundation, may corrode for a long period of time. In such a case, column reinforcement must be performed so that the load from the upper floor can be conventionally supported in some way.

  On the other hand, even if the legs are corroded, there are cases where the upper part can be used without any problem as a structural member, and there are not a few needs to leave pillars as much as possible for reasons such as luxury materials.

  For this reason, so-called rooting, in which the leg is removed and the supplementary material is joined under it, has been used since ancient times, but in the old joining method, joint processing is complicated and time consuming, and the tensile strength of the joint is insufficient It is sometimes difficult to adopt in recent home renovation work where earthquake resistance is important.

  Therefore, the present applicant forms a fitting groove in the end face of one pillar member among the pillar members joined to each other, and forms a fitting protrusion fitted in the fitting groove on the end face of the other pillar member. And fitting projections formed on the other column member into fitting grooves formed on one of the column members, in such a state so as to straddle the contact region of the two column members and to sandwich from both sides We have developed a jointing method of columns in which the backing plates are adhered to the side surfaces of the members (Patent Document 1).

  According to this joining method, it is sufficient to simply fit the fitting projections into the fitting grooves and then bond the backing plate, so that the workability at the site can be improved, and sufficient tensile strength can be achieved by bonding. It will also be possible to secure.

JP, 2008-190172, A

"Aseismatic diagnosis and reinforcement method for wooden houses-Seismic precision diagnosis and reinforcement method for wooden houses (revised version)" (Supervision by Housing Planning Division, Housing Bureau, Ministry of Land, Infrastructure, Transport and Tourism, published by Japan Building Disaster Prevention Association, July 12, 2004)

  However, even with the joint structure described in Patent Document 1, there is a problem that there is room for further improvement in workability because the joint processing requires a corresponding time.

  Further, in the joint structure described in Patent Document 1, since the pair of backing plates are positioned at the same height, in the large wall method, that is, in the method of attaching the backing plate to the side surface of the column member as it is, the entire edge portion of the backing plate When the cross section changes greatly to cause stress concentration, in the case of the mam-wall method, ie, a method in which the side surface of the column member is notched and the guide plate is fitted into the notch, Since load transfer between the end face is difficult, the cross section equivalent to twice the thickness of the backing plate will be lost at the position corresponding to the edge of the backing plate, and in any case, it is weak in structural margin Was also a concern that

  In this respect, also in the joint structure described on page 135 of Non-Patent Document 1, the same problem arises as described above because the base plate is also positioned at the same height position.

  On the other hand, in order to solve the problem, when the backing plate is attached to one side and the other side of the column so that the heights of the backing plates are different, in the joint structure described in Patent Document 1, the bonding area of the backing plate to the two pillar members is In the joint structure described in Non-Patent Document 1, the numbers of nailing for two column members are different from each other, so in any case, the tensile strength at the joint site, and hence the bending strength, is sufficient. Create a new problem that can not be secured.

  The present invention has been made in consideration of the above-mentioned circumstances, and it is easy to form a joint, does not form a structural weak point due to a change in cross section, and can secure a sufficient bending strength. Aims to provide a joint structure of pillars.

In order to achieve the above object, the joint structure of a column according to the present invention has a first notch having a step-like shape on the end face of the first column member as described in claim 1 and the first cut. A second notch fitted to the notch is provided on an end face of a second pillar member coaxially arranged with the first pillar member, and the first notch and the second notch are fitted to each other The first column member and the second column member are brought into contact with each other at their end faces in a mating manner, and the step shape is such that the contact portion of each column member is sandwiched from both sides Bonding the backing plate so that the side surface to be exposed is exposed and the side surface orthogonal to the side surface is covered, and the bonding area between the backing plate and the first pillar member is the bonding plate and the second pillar member The backing plate is positioned so as to be approximately equal to the bonding area .

  Further, in the joint structure of a column according to the present invention, one of the first column member and the second column member is connected to a column member or a base placed on a foundation such as a bundle stone or a cobble. It is used as a pillar member.

  In the joint structure of columns according to the present invention, the backing plate is sandwiched and bonded from both sides of the first column member and the second column member so as to straddle the contact portions thereof as in the conventional case. In this case, the end face of the first pillar member is provided with a first notch having a step-like shape, and the end face of the second pillar member is provided with a second notch fitted to the first notch. After the first and second pillar members are brought into contact with each other at their end faces in such a manner that they fit each other, the side surface where the step shape appears as an appearance is exposed, and the side surface orthogonal to the side surface is covered Glue the backing plates as shown.

  That is, the backing plate is not bonded to the side surface where the concavo-convex shape appears in the appearance as in the bonding structure described in Patent Document 1 or Non-Patent Document 1, but is bonded to the side surface orthogonal thereto.

  In this case, the heights of the contact end surfaces of the first and second column members are shifted up and down by the step difference in the side surfaces on which the backing plate is installed, and therefore, the heights of the two column members Even in the case where the side plates are adhered such that the adhesion areas of the side plates become equal, the side plates are shifted up and down.

  Therefore, in the large wall construction method, the total cross-sectional area of the two backing plates is not simultaneously increased / decreased at the edge of the backing plate as in the prior art, but divided in two stages at the edge of each backing plate. In the construction method, the cross section corresponding to the two sheets is not broken at the edge of the backing plate as in the prior art, but the cross section for one sheet is broken at the edge of each backing plate.

  Therefore, it is possible to significantly reduce the effects of stress concentration and cross section loss while sufficiently securing the bending strength at the joint portion of the two column members, and to form the first end surface of the first column member Since the second notch which should be formed on the end face of the second pillar member or the notch of the second column member has a step shape or a shape fitting thereto, joint processing is also facilitated.

Each guide plate is positioned so that the bonding area between the first pillar member and the second pillar member is substantially equal. By doing this, it is possible to sufficiently increase the bending strength at the joint portion between the first column member and the second column member.

  It is optional what kind of existing column is applied to the joint structure of columns according to the present invention, and it may be applied to a pipe column, but application to a through column is a typical example.

  In addition, although it is optional to apply to any part of the existing pillar, for example, it is possible to apply to the attic and the first floor ceiling or floor of the first floor, but the configuration applied to the first floor below Among the first pillar member and the second pillar member, a typical example is a configuration in which one of the first pillar member and the second pillar member is connected to a pillar member placed on a foundation such as a cobble stone or a cobble stone or a foundation.

The disassembled perspective view of the joining structure of the pillar which concerns on this embodiment. It is a figure of the joining structure of the pillar which concerns on this embodiment, (a) is a side view, (b) is the arrow line view seen from the AA line direction. The figure which showed the construction procedure of the joining structure of the pillar which concerns on this embodiment. The figure which showed the construction procedure of the joining structure of the pillar which concerns on this embodiment continuously. It is a figure showing increase and decrease of the cross-sectional area along the material axial direction of a pillar member, and (a) is a front view and a BB view seen from the front view and the mode of increase and decrease of the cross-sectional area in the conventional joint structure of columns. The figure shown with the arrow view, and the figure which showed the mode of increase / decrease in the cross-sectional area in the joining structure of the pillar of this embodiment with the side view. The disassembled perspective view of the joining structure of the pillar which concerns on a modification. It is a figure of the joining structure of the pillar which concerns on a modification, (a) is a side view, (b) is the arrow line view seen from the C-C line direction. It is the figure which showed the cross section defect | deletion along the material axial direction of a pillar member, (a) is the arrow view which looked at the appearance of the cross section defect | deletion in the joining structure of the conventional column from the front view and DD line direction The figure shown collectively, (b) is a figure which showed the mode of the cross-sectional defect in the joined structure of the pillar of this embodiment with the side view.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a joint structure of columns according to the present invention will be described with reference to the attached drawings.

First Embodiment
FIG. 1 is an exploded perspective view showing a joint structure of columns according to the present embodiment, and FIG. 2 is a side view and a front view thereof. As can be seen from these figures, the joint structure 1 for a pillar according to the present embodiment is provided with a notch 3a as a first notch having a step shape on the end face of the pillar member 2a which is a first pillar member. The notch 3b as a second notch fitted to the notch is provided on the end face of the pillar member 2b which is a second pillar member coaxially arranged with the pillar member 2a, and these notches 3a and 3b And the column members 2a and 2b are brought into contact with each other at their end faces so as to fit each other.

  The notches 3a and 3b are formed by appropriately setting the equivalent dimension for raising so that the dimensions corresponding to 1/2 of the column width and 52.5 mm become equivalent to the tread surface when the column dimension is, for example, 105 mm × 105 mm. Just do it.

  In each pillar member 2a, 2b, the side plates are exposed so that the above-described step shape appears and the side surfaces orthogonal to the side surfaces are covered so as to be sandwiched from both sides across the contact portions. , 5 are adhered respectively.

  The backing plates 4 and 5 can be a Hinoki board having a length of 240 mm, a width of 105 mm, and a thickness of 15 mm, as long as the dimensions of the columns are as described above.

  Here, the backing plate 4 is positioned so that the bonding area with the column member 2a is substantially equal to the bonding area with the column member 2b, and the backing plate 5 is also similar to the backing plate 4 with the column member 2a. Although the bonding area is positioned so as to be approximately equal to the bonding area with the column member 2b, since the notch 3a, 3b has a step corresponding to a dimension h for raising, the upper edge position of the backing plate 5 is It is lower than the upper edge position of 4 by a kick equivalent dimension h.

  It is a foundation structure where a foundation 31 is laid on a foundation 30 as shown in FIG. 3 (a), as shown in FIG. 3 (a), in the joint structure 1 of columns according to the present embodiment, the root of the through pillar 32 erected on the foundation. In order to apply the joint, first, as shown in the figure, the side of the through column 32 joined to the base 31 is cut at an appropriate height, and the base side is removed as shown in the figure (b). Do.

  Next, a lumber having the same cross section and the same length as the removed column portion is procured, and the notch 3a is processed and formed on the end surface thereof to form the column member 2a, and the end surface of the through pillar 32 on the left side The notch 3b is processed and formed into a pillar member 2b.

  Next, an adhesive is previously applied to the notches 3a and 3b, and as shown in FIG. 4 (a), the pillar members 2a and 2b are brought into contact with each other at their end faces in such a manner that they fit together. These are joined as shown in FIG.

  Next, the backing plates 4 and 5 are bonded so as to be sandwiched from both sides across the contact portions of the column members 2a and 2b, but in the case of bonding, as shown in FIG. While selecting the mounting surface so that the side surface where the shape appears is exposed and the side surface orthogonal to the side surface is covered, as shown in the figure (d), the bonding area with the column member 2a and the adhesion with the column member 2b The heights of the base plates 4 and 5 are respectively positioned so that the areas become substantially equal.

  In this case, since the notches 3a and 3b have steps corresponding to the raising dimension h, the upper edge position of the backing plate 5 is lower than the upper edge position of the backing plate 4 by the equivalent lifting dimension h.

  Therefore, in the large-wall construction method as in the present embodiment, the total cross-sectional area of the side plates 51, 51 does not increase or decrease at the same time, as in the conventional joint structure shown in FIG. (B) increase and decrease in two steps at the edge of each backing plate 4 and 5 as shown in FIG.

  In the conventional joint structure shown in FIG. 6A, the fitting groove 3a 'is fitted in the end face of one of the pillar members 2a' and 2b 'and the fitting groove is fitted in the fitting groove. The coupling projections 3b 'are respectively formed on the end face of the other column member 2b', and the column members 2a 'and 2b' are abutted so that the fitting projections 3b 'are fitted into the fitting grooves 3a'. The side plates 51 and 51 are bonded to the side surfaces so as to straddle the contact portion and to sandwich the contact portion from both sides.

  As described above, according to the column joint structure 1 according to the present embodiment, the heights of the contact end surfaces of the column members 2a and 2b are steps due to the step shape on both side surfaces on which the backing plates 4 and 5 are installed Even when the side plates 4 and 5 are bonded to each other so that the bonding areas of the side plates 4 and 5 to the two column members 2a and 2b become equal, the side plates 4 and 5 are vertically shifted by a distance h. It will be out of alignment.

  Therefore, in the large-wall construction method, the total cross-sectional area of the backing plates 4 and 5 increases and decreases in two steps at the edge of each backing plate 4 and 5, thus sufficient bending strength at the joint portion of the column members 2a and 2b. The effect of stress concentration can be significantly reduced while securing, and since the notches 3a and 3b to be formed on the end surfaces of the column members 2a and 2b have a step shape, joint processing is also facilitated.

Second Embodiment
Next, a second embodiment will be described. In addition, about the structure substantially the same as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 6 is an exploded perspective view showing the joint structure of columns according to the second embodiment, and FIG. 7 is a side view and a front view thereof. As can be seen from these figures, the joint structure 1 'of the column according to the present embodiment is provided with the first notch 63a having a step shape on the end face of the column member 62a which is the first column member, A notch 63b as a second notch fitted to the notch is provided on the end face of a pillar member 62b which is a second pillar member coaxially arranged with the pillar member 62a, and the notches 63a and 63b are The column members 62a and 62b are brought into contact with each other at their end faces so as to fit each other.

  The pillar member 62a is provided with notches 64a and 65a for fitting the side plates 4 and 5 integrally and continuously with the notches 63a, and the pillar member 62b is integrally formed with the notches 63b. And notches 64b and 65b for fitting in the backing plates 4 and 5 in a continuous form are provided, and the backing plate 4 is fitted in the notches 64a and 64b, and the backing plate 5 is fitted in the notches 65a and 65b. In a form in which the side plates 4 and 5 are sandwiched from both sides across the contact portions of the column members 62a and 62b, the side surface where the above-described step shape appears is exposed and the side surface orthogonal to the side surface is covered As is known, it is adhered to the column members 62a and 62b.

  The notches 63a and 63b have substantially the same configuration as the notches 3a and 3b, and have dimensions of half the column width, for example, 52.5 mm from the side plate 4 if the column dimension is 105 mm × 105 mm, The kick equivalent dimension may be appropriately set and processed so that the value obtained by subtracting the thickness of 5 becomes the tread equivalent dimension.

  The notches 64a and 64b are processed and formed so that the bonding area between the backing plate 4 and the column members 62a and 62b is substantially equal, and the notches 65a and 65b are also similar to the notches 64a and 64b. Is processed so that the adhesion area between the rod and the column members 62a and 62b is almost equal, but the notch 63a and 63b has a step corresponding to the dimension h for raising, so the upper edge position of the notch 65b, The upper edge position of the plate 5 is lower than the upper edge position of the notch 64 b, that is, the upper edge position of the guide plate 4 by a kick equivalent dimension h.

  In the joint structure 1 'of a column according to the present embodiment, as in the first embodiment, after applying an adhesive to the notches 63a and 63b in advance, the column members 62a and 62b are formed by fitting them to each other. The end faces of the two are brought into contact with each other and joined, and then the guide plates 4, 5 are fitted in the notches 64a, 64b and the notches 65a, 65b, respectively, to straddle the contact portions of the respective pillar members 62a, 62b Bond so as to be sandwiched from both sides.

  In this case, as described above, since the notches 63a and 63b have a step corresponding to the kicking up dimension h, the upper edge position of the backing plate 5 is lower than the upper edge position of the backing plate 4 by the kicking equivalent dimension h. It becomes.

  Therefore, in the true wall construction method as in the present embodiment, as in the conventional joint structure shown in FIG. As shown in (b), the cross section of one sheet remains at the edge of each of the side plates 4 and 5.

  In the conventional joint structure shown in FIG. 6A, the fitting groove 63a 'is fitted in the end face of one of the pillar members 62a' and 62b 'and the fitting groove is fitted in the fitting groove. The coupling projections 63b 'are respectively formed on the end face of the other column member 62b', and the column members 62a 'and 62b' are abutted so that the fitting projections 63b 'are fitted into the fitting grooves 63a'. The side plates 51 and 51 are provided so as to straddle the contact portions of the pillar members 62a 'and 62b' in such a manner that the notches are provided on both side surfaces where the fitting state of the connector appears as an appearance and fitted into the notches. It adheres to those sides so that it may pinch from both sides.

  As described above, according to the column joint structure 1 'according to the present embodiment, the heights of the contact end faces of the column members 62a and 62b have the step shape on both side surfaces on which the guide plates 4 and 5 are installed. Even in the case where the side plates 4 and 5 are bonded such that the bonding areas of the side plates 4 and 5 to the two pillar members 62a and 62b become equal, the side plates 4 and 5 are vertically shifted by the height h. It will be in the state of

  Therefore, in the true wall construction method, the cross section of only one sheet will be lost at the edge of each backing plate 4 and 5, thus ensuring sufficient bending strength at the joint portion of the column members 62a and 62b In addition, since the notches 3a and 3b to be formed on the end faces of the column members 62a and 62b have a step shape, joint processing is also facilitated.

1,1 'Column connection structure 2a, 62a 1st column member 2b, 62b 2nd column member 3a, 63a 1st notch 3b, 63b 2nd notch 4, 5 parallel plate

Claims (2)

A second notch having a step-like first notch formed on the end face of the first column member and a second notch fitted in the first notch coaxially with the first column member The first and second post members abut each other at their end faces such that the first notch and the second notch fit with each other. together is, the添板as side and the stepped shape is manifested side so as to be sandwiched from both sides across the contact sites of the respective pillar members are perpendicular to the side surface is exposed is covered with adhesive, respectively, wherein the added A joint structure of pillars characterized in that the joint plate is positioned such that a bonding area between the plate and the first pillar member is substantially equal to a bonding area between the joint plate and the second pillar member . The joint of the pillars according to claim 1, wherein one of the first pillar member and the second pillar member is a pillar member placed on a foundation such as a bundle stone or a cobble stone or a pillar member joined to a foundation. Construction.

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