JP2699792B2 - Structural glulam and its joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structural laminated wood mainly used as a pillar or a beam of a building and a joint structure thereof.

[0002]

2. Description of the Related Art In general, wood has a directionality in strength and is inferior in material in quality to steel and the like. Further, the joint between the column and the beam made of wood is considered to be a so-called pin joint, and it is extremely difficult to obtain a structurally advantageous rigid joint.

[0003] Recently, glued laminated lumber has been used as a structural material such as a column or a beam. However, there is a problem in a joining portion due to the material. Particularly, a horizontal strut or a bearing wall is installed for a horizontal force. It was necessary to reinforce it. In addition, various attempts have been made to join columns and beams to make them as rigid as possible by using various metal fittings, but no definitive one has yet been found.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a large member strength (particularly, bending strength) in spite of a small member cross section, and a structure for rigidly connecting a column and a beam. It is an object of the present invention to provide a glulam and its joint structure.

[0005]

In order to solve the above-mentioned problems, a structural laminated timber according to the present invention comprises a plurality of sawn boards or a plurality of small angled lumbers whose fiber directions coincide with each other in the thickness direction. A plurality of reinforcing rods are inserted through the bonded portion along the fiber direction of the sawn board or small square bar, and a recess is provided at an end of the sawn board or small square bar in the fiber direction, and a cross section of the recess is provided. A joint fitting having a lip groove shape is embedded therein, and the joint fitting is connected to the reinforcing rod.

Further, in the joint structure according to the present invention, when joining the end of the beam made of the structural glued laminated lumber to the beam joint of the column, the concave portion is formed in the beam joint of the column. An engaging portion having a substantially lip groove shape in cross section is provided at a bottom portion of the column-side concave portion so as to face the joint fitting of the beam, and the column-side concave portion is provided. And a column / beam coupling fitting whose both ends respectively engage with the joining fitting on the beam side and the engaging section on the pillar side, and a grout material is provided in the space. Is filled.

[0007]

[Embodiment 1] 1 to 5 show one embodiment of a structural laminated material according to the present invention. In the drawings, reference numerals 1 and 2 denote a core material and a sap material integrally bonded to each other by an adhesive, and 3 A reinforcing rod inserted between the core 1 and the sap 2 in the fiber direction,
Numeral 4 is a groove formed to face a bonding surface between the core material 1 and the sap material 2 to form a through hole 5 for inserting the reinforcing rod 3, and 6 is a fiber of the core material 1 and the sap material 2 Embedded in the bonding portion between the core material 1 and the sap material 2 at the end in the
And a joining metal fitting for joining the structural glued material A to another structural material, and reference numeral 7 denotes bonding between the core material 1 and the sap material 2 at the fiber-direction ends of the core material 1 and the sap material 2. It is a recess formed in the portion and burying the joint fitting 6.

The core material 1 and the sap material 2 are formed by stacking a plurality of sawing boards or a plurality of small square materials in the thickness direction with their fiber directions aligned, and integrally bonding them with an adhesive. Is formed. At this time, the diameters and quantities of the core 1 and the sap 2 are appropriately determined according to the diameter of the structural laminated material A to be formed.

The reinforcing rod 3 is inserted into each of the through holes 5 formed at a predetermined interval in the bonding portion between the core material 1 and the sap member 2, and at this time, a plurality of reinforcing rods 3 are inserted into one through hole 5. It may be inserted. The reinforcing rod 3 is made of a reinforcing steel or P
It is formed from a C steel rod or the like, and the diameter, the number, and the interval are appropriately determined according to the diameter of the structural laminate A.

The joining metal fitting 6 is formed in a substantially lip groove shape in cross section, and is provided along the bonding portion between the core material 1 and the sap material 2 at the fiber-direction ends of the core material 1 and the sap material 2. It is embedded in a continuously formed recess 7 and is integrally connected to the end of the rod 3 by screwing or welding. In addition, the structural glued laminated material A having such a configuration is formed in a factory.

Embodiment 2 FIG. FIG. 6 shows an embodiment of the joint structure according to the present invention,
In the figure, the same parts as those in the first embodiment and corresponding parts are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 8 denotes a beam made of structural glued laminated material A, 9 denotes a column, 10 denotes a beam receiving bracket buried in a beam joint of the column 9,
Numeral 11 denotes a column / beam connecting metal fitting for connecting the beam receiving metal fitting 10 and the metal connecting metal fitting 6 to join the end of the beam 8 to the beam connecting part of the column 9. The grout material is filled in the space A formed by the concave portion 13 formed at the beam joint portion of the column 9 and the column 9 to make the joint portion between the column 9 and the beam 8 rigidly joined.

The beam receiving member 10 is formed in a tubular shape having a rectangular cross section, and a surface 10a facing the end of the beam 8 is exposed at the bottom of the concave portion 13. Each of the facing surfaces 10a has a substantially lip groove-shaped cross section. Are formed continuously in the up-down direction of the beam receiving member 10, respectively.

The column / beam connecting fitting 11 has engaging portions 11a, 11a having a substantially T-shaped cross section which can engage with the joining fitting 6 of the beam 8 and the engaging portion 10b of the beam receiving fitting 10, respectively, at both ends. The column / beam connecting fitting 11 is provided with a space A formed by the concave portion 7 and the concave portion 13 and engaging portions 11a, 11a at both ends are connected to the joining metal fitting 6.
10b. The space A is filled with the grout material 12. With such a configuration, the beam 8 and the column 9 are integrally joined in a rigidly joined state. The cross section of the column / beam connection fitting 11 is determined according to the stress acting on the joint between the column 9 and the beam 8. Further, the surface of the column / beam connecting fitting 11 may be formed in an uneven shape in order to integrate the surface with the grout material 12. further,
The column / beam connecting metal fitting 11 is installed by being dropped into the concave portions 7 and 13 from above, and the lower end portion 7a of the concave portion 7 is a receiving portion for supporting the column / beam connecting metal member 11 from below.

[0015]

The structural glued laminated lumber according to the present invention has the above-described construction. In particular, the reinforcing rod is inserted through the bonding portion between the core and the sap along the fiber direction.
Particularly, there is an effect that a structural material such as a column or a beam having extremely high bending strength and extremely high strength can be formed in spite of a small cross-sectional size. In addition, since a joining metal fitting having a substantially lip groove shape in cross section is attached to the end portion and connected to the reinforcing rod, it is easily and easily connected to another structural material such as a pillar through a connecting metal fitting that can be engaged with the joining metal fitting. There is also an effect that can be securely joined.

In the joint structure according to the present invention, when joining the end of the beam made of the structural glued laminated lumber to the beam joint of the column, a recess is formed in the beam joint of the column. An engaging portion having a substantially lip groove shape in cross section is provided at a bottom portion of the concave portion on the column side to face a joint fitting of the beam, and the concave portion on the column side is provided with the concave portion on the column side. A column / beam coupling fitting is provided in which a space formed by a beam-side recess is engaged at both ends with the beam-side joining fitting and the column-side engaging portion, respectively.
And by filling the grout material into the space, the column and the beam can be very easily joined in a rigid joint state,
There is an effect that a wooden ramen frame can be configured.

[Brief description of the drawings]

FIG. 1 is a partially broken side view of one embodiment of a structural glued laminated wood according to the present invention.

FIG. 2 is an end view of the structural glulam shown in FIG. 1;

FIG. 3 is a partially cutaway end view of the structural glulam shown in FIG. 1;

FIG. 4 is a partially enlarged cross-sectional view of the structural glulam shown in FIG. 1;

FIG. 5 is a partial perspective view of the structural glulam shown in FIG. 1;

FIG. 6 is a cross-sectional view of one embodiment of the joint structure according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Core material, 2 ... Sapwood, 3 ... Reinforcement rod, 4 ... Recess, 5 ...
Through-hole, 6 ... Joint fitting, 7 ... Recess, 8 ... Beam, 9 ... Column, 10
… Beam receiving fittings, 11… Column and beam connecting fittings, 12… Grout material,
13: recess, A: space.

Claims (2)

(57) [Claims] 1. A plurality of sawn boards or a plurality of small squares are bonded in the thickness direction with their fiber directions aligned with each other, and a plurality of small squares are bonded to the bonded portions along the fiber direction of the sawn board or the small squares. A reinforcing rod is inserted, a concave portion is provided at an end in the fiber direction of the sawing plate or small square material, and a bonding metal having a substantially lip groove shape is buried in the concave, and the bonding metal and the reinforcing rod are connected. Structural laminated timber characterized by being made. 2. A joint structure for joining an end of a beam made of a structural glued laminated lumber to a beam joint of a column according to claim 1, wherein a concave portion is formed at a beam joint of said column. An engaging portion having a substantially lip groove shape in cross section is provided at a bottom portion of the column-side concave portion so as to face a joint fitting of the beam. A column / beam connecting metal fitting is installed in the space formed by the beam-side concave portion, the ends of which are respectively engaged with the beam-side joining metal and the column-side engaging portion, and a grout material is provided in the space. A joint structure characterized by being filled.