JP2018012975A - Structure for connecting column and beam together - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for connecting a column and a beam together, which enables the column and the beam to be easily and inexpensively connected together, while keeping earthquake resistance of a wooden building proper.SOLUTION: In a structure 1 for connecting a column 10 and beams 20 and 30 together by inserting tenons 21 and 31, which protrude from end surfaces of the beam 20 and 30, into mortises 14 and 15 formed on a side surface of the wooden column 10, the column 10 comprises a rectangular cross-section base 11, and a plurality of rib parts 12 and 13 that are provided in the state of overhanging to a lateral side of the base 11 and on which the end surfaces of the beam 20 and 30 abut, respectively. The rib parts 12 and 13 are equal in width to the corresponding beams 20 and 30, and the mortises 14 and 15 are formed in the rib parts 12 and 13.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a column and beam connection structure, and more particularly to a column and beam connection structure in a wooden building.

  When connecting a beam to a through-column in a wooden building, it has been conventionally performed to insert a tenon projecting from the end face of the beam into a mortise formed on the side of the column having a rectangular cross section and fasten ( For example, Patent Document 1).

  However, in the connection structure of the columns and beams described above, since the cross-sectional defect of the columns becomes large due to the formation of the mortise, there is a possibility that the column breaks at the defective portion due to a large shake and the building collapses. For this reason, various metal construction methods using dedicated hardware instead of forming mortises in the columns have been studied, but there has been a problem that manufacturing costs and work costs are increased.

JP-A-8-105143

  Therefore, an object of the present invention is to provide a column and beam connection structure capable of easily and inexpensively connecting a column and a beam while maintaining good earthquake resistance of the wooden building.

  The object of the present invention is a structure in which a tenon projecting from an end face of a beam is inserted into a tenon formed in a side surface of a wooden column to connect the column and the beam, and the column has a rectangular cross section. And a plurality of rib portions provided so as to project to the side of the base portion and in contact with the end surfaces of the beams, and the rib portions have the same width as the corresponding beams. The mortise is achieved by a column and beam connection structure formed in the rib portion.

  In this column and beam connection structure, it is preferable that the base portion and the rib portion are integrally formed by laminating a plurality of laminated members having different widths in one direction. Alternatively, each of the rib portions is preferably formed by laminating a plurality of laminated materials in the depth direction of the mortise.

  ADVANTAGE OF THE INVENTION According to this invention, the connection structure of the pillar and beam which can connect a pillar and a beam easily and cheaply can be provided, maintaining the earthquake resistance of a wooden building favorably.

It is a principal part perspective view of the connection structure of the pillar and beam which concerns on one Embodiment of this invention. It is sectional drawing which decomposes | disassembles and shows the principal part of the connection structure of the pillar shown in FIG. It is sectional drawing which shows the modification of the pillar shown in FIG. It is principal part sectional drawing of the connection structure of the pillar and beam which concerns on other embodiment of this invention. It is principal part sectional drawing of the connection structure of the pillar and beam which concerns on further another embodiment of this invention. It is sectional drawing which shows the modification of the pillar shown in FIG. It is sectional drawing which shows the modification of the pillar shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a main part perspective view of a column and beam connection structure according to an embodiment of the present invention, and FIG. 2 is a main part sectional view showing the column and beam shown in FIG. 1 in an exploded state. The column and beam connection structure 1 shown in FIGS. 1 and 2 includes two end surfaces of two wooden beams 20 and 30 in contact with two side surfaces of a wooden column 10 that is a through column of a wooden building. The two beams 20 and 30 are configured to have an L shape in plan view.

  The pillar 10 is configured by laminating a plurality of laminated materials 10a and 10b, which are dried strip-shaped building materials, and bonding them with an adhesive. The two types of laminated materials 10a and 10b have mutually different widths W1 and W2 in the cross-sectional direction, and by laminating them in one direction, a base 11 having a rectangular cross section and two ribs 12 and 13 are provided. Is formed.

  The rib parts 12 and 13 are sections having a rectangular cross section provided so as to project to the side of the base part 11, extend in parallel with the longitudinal direction of the base part 11, and an arbitrary cross section of the column 10 is L-shaped. It is comprised so that it may become. Each of the rib portions 12 and 13 has the same width as the width of the beams 20 and 30 with which the ribs 12 and 13 come into contact. The end faces come into contact.

  The beams 20 and 30 are provided with tenons 21 and 31 protruding from the end faces, respectively. The tenons 21 and 31 may be made of metal, but are preferably formed by cutting the ends of the wooden beams 20 and 30. Fastening insertion holes 22 and 32 are formed in the center of the beams 20 and 30 along the longitudinal direction.

  In the rib portions 12 and 13, mortises 14 and 15 into which the mortises 21 and 31 are inserted are formed at different height positions of the column 10, respectively. The depth of the mortises 14 and 15 is set shallower than the protruding length of the rib portions 12 and 13 in this embodiment. The shapes of the mortises 21 and 31 and the mortises 14 and 15 are steps having a step portion in the present embodiment, but are not particularly limited, and may be various known shapes.

  On the bottom surfaces of the mortises 14 and 15, through holes 16 and 17 are formed that open on the opposite side surface of the column 10. The beams 20 and 30 are fixed to the column 10 by inserting pulling bolts (not shown) into the insertion holes 22 and 32 respectively aligned with the through holes 16 and 17 of the column 10. Since the fastening method of the column and the beam using the pulling bolt is well known, detailed description is omitted.

  In the column and beam connection structure 1 having the above-described configuration, the mortises 14 and 15 of the column 10 are formed in the rib portions 12 and 13, and thus the through hole 16 for fastening the beams 20 and 30 to the base portion 11. , 17 need only be formed, and the column 10 and the beams 20, 30 can be easily and inexpensively connected while suppressing the cross-sectional defect of the base 11. The mortises 14 and 15 are preferably formed only in the rib portions 12 and 13 so as not to reach the base portion 11 as in the present embodiment.

  For example, when mortises are formed at two locations of a conventional 105-square through column, the cross-sectional defect rate is about 38% at the maximum, but according to the column and beam connection structure 1 of this embodiment. For example, the cross-sectional defect rate when the base 11 is 105 corners can be suppressed to about 18% at the maximum, and the strength of the column can be ensured to obtain good earthquake resistance. In addition, since the both sides | surfaces of the rib parts 12 and 13 projecting from the base 11 become flush with the both side faces of the joined beams 20 and 30, the internal space of the building by providing the rib parts 12 and 13 Reduction can be prevented.

  Further, by configuring the pillar 10 from a plurality of laminated members 10a and 10b having different widths W1 and W2, not only the warpage of the pillar 10 is reduced, but also the strength is improved as compared with the case of using a solid material. The column 10 having an L-shaped cross section in which the base portion 11 and the rib portions 12 and 13 are integrated can be easily formed.

  As mentioned above, although one Embodiment of this invention was explained in full detail, the specific aspect of this invention is not limited to the said embodiment. For example, in this embodiment, the pillars 10 are formed by laminating a plurality of laminated members 10a and 10b having different widths in one direction. However, as shown in FIG. The rib portions 12 and 13 may be formed by laminating the laminated members 10c in the direction. According to this configuration, the laminated direction of the laminated material 10c where the mortises 14 and 15 are formed coincides with the axial direction of the pulling bolts (not shown) inserted into the through holes 16 and 17. Moreover, the joint strength of the beams 20 and 30 to the column 10 can be increased, and the earthquake resistance of the building can be further improved. In the configuration shown in FIG. 3, the same width can be used as the laminated material 10 c for forming the rib portions 12 and 13. However, when the beams 20 and 30 have different widths, they have different widths. Glulam may be used.

  Further, in the present embodiment, the two rib portions 12 and 13 projecting to the side of the base portion 11 are provided so as to have an L-shaped cross section, but as shown in FIG. The protruding three rib portions 112, 113, 114 may be provided to have a T-shaped cross section, and the pillar 110 may be formed so as to be connected to the three beams 120, 130, 140. Alternatively, as shown in FIG. 5, four rib portions 212, 213, 214, and 215 projecting to the side of the base portion 211 are provided so as to have a cross-shaped cross section, and four beams 220, 230, 240, and 250 are The pillar 210 may be formed so that it can be connected. Thus, according to the position of the through pillar in the wooden building, a pillar having an appropriate cross-sectional shape can be used.

  In the configuration shown in FIG. 4, it is preferable that the mortises 115, 116, 117 formed in the rib portions 112, 113, 114 are set to have a depth so that none of them reaches the base 111. Similarly, in the configuration shown in FIG. 5, the mortises 216, 217, 218, and 219 formed in the rib portions 212, 213, 214, and 215 are set to a depth so that none of them reaches the base portion 211. It is preferable.

  The pillars 110 and 210 shown in FIGS. 4 and 5 are configured by laminating laminated materials 110a and 110b (or laminated materials 210a and 210b) having different widths in one direction. As shown in FIG. 5, the laminated member 110c (or the laminated member 210c) is laminated in the depth direction of the mortises 115, 116, 117 (or the mortise holes 216, 217, 218, 219), and the rib portion 112 is laminated. , 113, 114 (or rib portions 212, 213, 214, 215) may be formed.

DESCRIPTION OF SYMBOLS 1 Connection structure of pillar and beam 10 Pillar 10a, 10b Glued material 11 Base part 12, 13 Rib part 14, 15 Mortise 20, 30 Beam 21, 31 Mortise

Claims (3)

A tenon projecting from the end face of the beam is inserted into a mortise formed in the side surface of the wooden column, and the column and the beam are connected,
The column includes a base portion having a rectangular cross section, and a plurality of rib portions that are provided so as to project to the side of the base portion, and respectively contact the end surfaces of the beams.
The rib portion has the same width as the corresponding beam;
The mortise is a connecting structure of columns and beams formed in the rib portion.   The column and beam connection structure according to claim 1, wherein the base is integrally formed with the base and the rib by laminating a plurality of laminated members having different widths in one direction.   2. The column and beam connection structure according to claim 1, wherein each of the rib portions is formed by laminating a plurality of laminated members in the depth direction of the mortise.

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