JP2601113B2 - Column-beam connection structure in glulam 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 column / beam joint structure in a laminated timber structure in which a rigid frame structure is constituted by columns and beams of a laminated timber.

[0002]

2. Description of the Related Art Generally, a wooden frame using glued laminated lumber has a dome-shaped or arch-shaped structure since a joint between a column and a beam is usually a pin joint. . Recently, the technology of large-section laminated timber has been advanced, and with the establishment of construction methods and design techniques for improving fire prevention performance, there has been an increasing demand for various forms of building using wooden structures, including office buildings for ramen frames. But the traditional,
In the method of bolting by incorporating metal fittings in the connection, since the object is wood, it is difficult to substantially rigidize it because it can not apply enough axial force to the bolt to expect friction welding,
It is considered impossible to construct a multi-layer pure ramen frame.

[0003] The present invention has been made in view of the current state of laminated timber frames, and aims at newly proposing a joint structure that enables a pure ramen frame.

[0004]

At the joint position, it is advantageous in terms of joining to penetrate either the column or the beam, but if one penetrates, the joint on the other side becomes a pin. According to the invention, the glued lumber pillars are cut off on the upper and lower floors, the joint hardware is straddled between them, the two are connected by a grout material and a tensile material, and the fixing hardware is projected on the joint hardware, while the fixing hardware is mounted on the glued lumber beam. The glue beam is fixed to the glued-lambular beam with the grout material, and the glued-lambular beam is joined to the glued-lambular column. To assemble.

A tenon is formed in the joint surface of each glued lumber column and is inserted into the joint hardware, and a tensile member is inserted into the inside of the tenon in the axial direction. A cutout groove is formed in the intermediate direction of the end of the glulam beam in the width direction.

The fitting has a box-shaped cross section having a larger area than a tenon, and a fixing metal which is inserted into a cutout groove of the laminated timber beam is provided from the outer periphery thereof.

The mortise is inserted into the joint metal fittings on the upper and lower floors to face each other, and the grout material is filled between the inside of the fitting metal fittings and the tenon of the laminated wood pillar, and tension is applied to the tensile material inserted therein. Is given, and they are tensile-bonded and integrated with each other.

The glued lumber beam is installed with the cutout groove surrounding the fixing hardware, the end face of which is abutted against the fitting hardware, and the inside of the cutout groove is filled with a grout material and the fixing metal is fixed to fix the glued metal pillar. Joined to.

When the fixing metal protruding from the joint hardware that joins the two glue straddles over the two glued lumber pillars is fixed to the glued lumber beam by the grout material, the tensile force acting on the glued lumber beam is a notch groove. It is transmitted from the grout material inside to the fitting hardware through the fixing hardware, the bending moment from the glued glue beam is reliably transmitted to the glued lumber column, the joint of both is rigidly joined, and it is possible to construct a pure ramen frame .

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing one embodiment.

In the present invention, as shown in FIG. 1, the glued lumber columns 1 and 1 of the upper and lower floors are formed by using a joint fitting 3, and a tensile material 4 and a grout material are used.
The glued laminated beams 2 are rigidly joined to the glued laminated lumber columns 1 by fixing the fixing metal pieces 6 protruding from the joint metal pieces 3 with the grout material 52 while being connected by 51.

A tenon 11 is protruded from the joint surface of each of the glued lumber columns 1 by shaving the periphery thereof.
The tenon 11, 11 is inserted into the fitting 3, and the tenon 11,
11 is installed in a state where an end face around the end comes into contact with an end face of the joint fitting 3. Both tenons 11, 11 face each other at a distance from each other in the joint fitting 3.

A through-hole 12 is formed in the laminated timber column 1 so as to penetrate in the axial direction evenly on the plane, and the tension member 4 is inserted into the through-hole 12 as shown in FIGS. In addition to being fixed to the joint hardware 3 by the grout material 51 filled in the joint hardware 3, the glued lumber columns 1, 1 are integrated with each other by applying tension to the tensile member 4 and receiving a compressive force. I do. A sleeve 7 for preventing the grout material 51 from penetrating into the insertion hole 12 is disposed at least at a tenon 11 of the glued wood pillar 1, and an end of the sleeve 7 protrudes from an end face of the tenon 11, and is attached to a diaphragm 31 described later. bump into. Tensile material 4
In addition to the steel rods and the reinforcing bars, wires are used, and the number thereof is determined in accordance with the cross-sectional area, cross-sectional shape, etc. of the laminated timber column 1. As shown in FIG. 2, corner members 14 corresponding to a part of the glued laminated wood pillars 1 are installed at four corner positions on the outer peripheral side of the joint fitting 3, and are sandwiched between upper and lower glued laminated wood pillars 1, 1.

The joint fitting 3 has a box-shaped cross section having a plane area whose inner periphery is larger than the tenon 11, and its axial length is larger than the sum of the tenon 11, 11 of the two laminated timber columns 1, 1. When the laminated wood pillars 1 and 1 face each other, a clearance is created between the periphery of the tenon 11 and the inner peripheral surface of the joint fitting 3 and between the facing tenons 11 and 11. The inside of the joint fitting 3 is vertically partitioned by a diaphragm 31 welded to an intermediate portion in the axial direction for stiffening when stress is applied, but a clearance in the height direction is formed between the end face of the tenon 11 and the diaphragm 31. .

The grout material 51 is filled in a clearance formed between the tenon 11 of each laminated wood pillar 1 and the joint fitting 3.
In the clearance on the lower floor side, there is a scallop 32 formed at the four corners of the diaphragm 31 as shown in FIG. 2, and in the clearance on the upper floor side, as shown in FIG. Injection holes drilled in several places up to the circumference of 1
Injected from 13 each. The filling state of the grout material 51 is confirmed by discharging the grout material 51 from the other scallops 32 on the lower floor side and from the other injection holes 13 on the upper floor side.

The fixing hardware 6 protrudes from the outer periphery of the joint metal 3 on the connection side with the glued glue beam 2, and is fixed in the grout material 52 filled in the cutout groove 21 of the glued glue beam 2. The bending moment and shear force from the glulam beam 2 are transmitted to the glulam column 1. In addition to the illustrated T-shaped steel, stud bolts and the like are used for the fixing hardware 6, and the fixing hardware 6 is arranged in a plurality of rows in the width direction of the laminated timber beam 2 according to the magnitude of the stress.

A notch groove 21 is formed in the middle direction of the end of the glued laminated wood beam 2 except for a lower end portion 22 in the width direction, and the notch groove 21 surrounds the fixing hardware 6 and is assembled. A receiving metal member 8 for transmitting the tensile force of the beam 2 to the fixing metal member 6 is inscribed and fixed. The receiving metal member 8 has a shape such as a groove-shaped cross-section for transmitting the tensile force as a supporting force, and has a shape sandwiching the fixing metal member 6 from both sides in the direction of force application. It is fixed to the glulam beam 2. The reaction force of the receiving hardware 8 when transmitting the tensile force is determined by the anchor rod 9.
To bear. The anchor rods 9 are arranged in some sections of the glulam beam 2 or over the entire length.

As shown in FIG. 2, the laminated timber beam 2 is a grout material.
Since it is necessary to partition the filling region of the fitting 52, the end surface is installed in a state of abutting against the outer peripheral surface of the fitting 3, and the lower end portion 22 of the notch groove 21 becomes a mold for filling the grout material 52, as in the embodiment. When the beam is larger than the length of the joint fitting 3, the lower end portion 22 is cut out in accordance with the shape of the head of the laminated wood column 1 as shown in FIG. Lower end 22
End faces the side surfaces of the laminated wood pillar 1.

The inside of the notch groove 21 of the laminated timber beam 2 is filled with a grout material 52 from above.
The fixing metal 6 is fixed to the laminated metal pillars 1 and 1 via the joint metal 3. The tensile force acting on the upper and lower ends of the glued laminated timber 2 is transmitted from the grout 52 in the cutout groove 21 to the joint fitting 3 through the fixing hardware 6, and the bending moment from the glued laminated timber 2 is applied to the glued laminated lumber column 1. Communication is assured.

Here, the construction procedure of the column / beam frame will be described.

First, the laminated timber pillar 1 on the lower floor side is hung at a predetermined position on the foundation concrete 15 or on the slab, and a retainer is held and held, and the joint fitting 3 is set around the tenon 11 around the head. Subsequently, the glued laminated timber beam 2 is suspended and held by a support or the like, and the glued laminated timber column 1 on the upper floor is further erected on the joint fitting 3, and then the grout material 5 is inserted into the joint fitting 3 and the notch groove 21.
Fill 1,52. When the tensile member 4 is previously laid across the entire glued laminated lumber columns 1 from the foundation concrete 15 or the slab, the glued lumber columns 1 on the upper floor side are installed on the joint fitting 3 in a state where they are positioned by the tensile members 4. You. As described above, the grout material 51 is injected into the joint fitting 3 from the scallops 32 of the diaphragm 31 and the injection holes 13 of the laminated wood pillar 1 through the notch grooves 21.
The grout material 52 is injected into the interior from above.

Waiting for the grout materials 51 and 52 to harden and develop their strength, the stays, supports and the like are removed, and the construction of the frame for one layer is completed. After the construction of the column and beam frame for one layer, concrete 10 of the slab is cast, but the construction of the upper floor is performed by repeating the above procedure.

Tension is introduced into the tension member 4 after the entire glued laminated timber columns 1 are erected, and the top of the tension member 4 is attached to a plate 16 or a washer, etc. installed at the top end of the glued laminated timber column 1 on the top floor as shown in FIG. nut
Fixed by 17 mag.

As described above, the tensile members 4 are provided at the standing positions of the laminated wood columns 1 in advance over all the laminated wood columns 1 or all the laminated wood columns 1.
After being installed, the laminated wood pillars 1 are divided over the entire length or each unit of laminated wood pillar 1 for convenience of transportation and insertion workability.
It is erected every time it is installed.

When the tensile member 4 is divided for each glued laminated wood pillar 1, as shown in FIG. 5, a thread is cut at least at the end of the glued laminated wood pillar 4 and inserted into the glued laminated wood pillar 1 on the lowest floor. Tensile material 4
Are fixed to the foundation concrete 15 and the slab by cap nuts 18 and are connected to each other by couplers 19 at the joint fitting 3.

[0026]

As described above, the present invention is as described above. The laminated wood pillars are separated on the upper and lower floors, the joint hardware is laid between them, the two are connected by the grout material and the tensile material, and the fixing hardware is fixed to the joint hardware. At the same time, a notch groove is formed in the glued lumber beam to allow the fixing hardware to enter, and the fixing metal is fixed in the glued lumber beam by the grout material filled in the notched groove, and the glued lumber beam is glued to the glued lumber column. The tensile force acting on the glued laminated beam is transmitted from the grout material in the notch groove to the fitting hardware via the fixing hardware, and the transmission of the bending moment from the laminated glued beam to the glued laminated wood column is ensured. Thus, the two can be rigidly joined, and a frame having a pure ramen structure can be constructed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a column / beam joint.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a perspective view showing a state of connection of the glued laminated timber beams to the glued laminated timber pillars.

FIG. 4 is a perspective view showing a state of fixing of a tension member head.

FIG. 5 is a longitudinal sectional view showing a state of a joint in a case where a tensile material is divided for each laminated wood column.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Glued lumber pillar, 11 ... Mortise, 12 ... Insertion hole, 13 ... Injection hole, 14 ... Corner member, 2 ... Glued lumber beam, 21 ... Notch groove, 22 ... Lower end part, 3 ... fitting hardware, 31 ... diaphragm, 32 ... scallop, 4 ... tensile material, 51, 52 ...
Grout material, 6 Fixing hardware, 7 Sleeve, 8
Receiving hardware, 9 ... anchor rod, 10 ... concrete, 15 ... foundation concrete, 16 ... plate, 17 ...
Nut, 18 ... Cap nut, 19 ... Coupler.

Claims (1)

(57) [Claims] 1. A joint structure for rigidly joining a glued laminated beam to a glued laminated wood pillar while connecting the glued laminated wood pillars of the upper and lower floors to each other,
A mortise is formed on the joint surface of each glued timber column, a tensile material is inserted in the axial direction inside, and a cutout groove is formed in the middle of the glued wood beam end in the width direction. In between the upper and lower glued timber pillars, a fitting metal with a box-shaped cross section with a larger area than the tenon with fixing metal protruding on the outer circumference is laid, and the tenon is glued to the glued timber on the upper and lower floors. The glued lumber beams are installed facing each other with the notch grooves surrounding the fixing hardware, and the end faces are abutted against the fitting hardware, between the inside of the fitting hardware and the tenon of the glued lumber pillar, and A grout material is filled in the notch groove, and tension is given to the tensile material.