JP7394256B1 - Joint structure - Google Patents

Abstract

[Problem] To provide a column and beam joint structure etc. that can be easily constructed. A joint structure 1 is one in which a wooden column 2 and a wooden beam 4 are joined by a concrete joint 3. In the joint structure 1, a joint hardware 8 is provided at the end of the wooden beam 4 on the joint part 3 side, and a perforated steel plate dowel 84 that protrudes from the joint hardware 8 halfway in the horizontal direction of the joint part 3 is attached to the joint part 3. Horizontal reinforcing bars 10 are embedded in the joint 3 and protrude from the wooden beams 4 on both sides of the joint 3 and are connected by a joint 11 within the joint 3. [Selection diagram] Figure 1

Description

The present invention relates to a column-beam joint structure and the like.

In a wooden rigid-frame frame made of wooden columns and wooden beams, the wooden columns and wooden beams are sometimes joined via concrete joints (shiguchi parts).

Patent Document 1 discloses that the joint and the wooden beams on both sides are connected by protruding hardware provided on both sides of the joint, and these protruding hardware are connected by through bolts embedded in the joint, and For the wooden columns above and below the joint, the threaded reinforcing bars of the steel rods are buried in these wooden columns, and the deformed reinforcing bars of the steel rods that protrude from the wooden columns are connected to both ends of the deformed reinforcing bars buried in the joint. It is stated that the connection is to be made by reinforcing joints.

Patent No. 6638905

However, in the above-mentioned joint structure, the number of through bolts in the joint portion is large, and construction is labor-intensive. At the joints between columns and beams, there was a need for a structure that would solve these problems and be easy to construct.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a column-beam joint structure etc. that can be easily constructed.

A first invention for achieving the above-mentioned object is a joint structure in which a column and a wooden beam are joined by a concrete joint, wherein a joining hardware is provided at an end of the wooden beam on the joint side. A shear resistance member protruding from the joining hardware part way in the horizontal direction of the joint is embedded in the joint, and horizontal reinforcing bars protruding from the wooden beams on both sides of the joint are connected to the joint within the joint. The joint hardware includes an end plate provided on the end surface of the wooden beam, and a joint plate embedded in the end of the wooden beam on the joint side, and the horizontal reinforcing bar is connected to the The joint structure is characterized in that an end portion of the joint plate is fixed to the end plate so as to penetrate through the end plate and the joint plate is perpendicular to the end plate .
Moreover, the installation range in the height direction or the position in the beam width direction of the bonding plate and the shear resistance member may be different.
A second invention is a joint structure in which a column and a wooden beam are joined by a joint made of concrete, wherein a joining hardware is provided at an end of the wooden beam on the joint side, and the joining hardware is connected to the joining part. A shear resistance member protruding halfway in the horizontal direction of the joint is embedded in the joint, horizontal reinforcing bars protruding from the wooden beams on both sides of the joint are connected by a joint within the joint, and the joint hardware includes an end plate provided on the end face of the wooden beam, a joint plate buried in the end of the wooden beam on the joint side, and a load supporting portion of the wooden beam that is joined to the lower end of the end plate. a flange disposed on the lower surface of the end on the joint side side, the horizontal reinforcing bar penetrates the end plate, and the lower surface of the flange is covered with a flame retardant layer on the lower surface of the wooden beam. This is a joint structure characterized by the following.
It is also desirable that the width of the flange is smaller than the width of the wooden beam by the thickness of flame retardant layers on both sides of the wooden beam.
It is also desirable that the flange is disposed in a recess provided on the lower surface of the load-bearing portion of the wooden beam.

In the present invention, when joining a column and a wooden beam through a concrete joint, a joining hardware is provided at the end of the wooden beam on the joint side, and a shear resistance member protruding from the joining hardware is attached to the joint. Buried in concrete. Additionally, the horizontal reinforcing bars protruding from the wooden beams on both sides of the joint are connected by joints within the joint. By transmitting shear force between the wooden beam and the joint using the above joint hardware, there is no need to place numerous through bolts or horizontal reinforcing bars within the joint, simplifying the configuration within the joint and facilitating construction. become. Furthermore, in the present invention, since the horizontal reinforcing bars protruding from the wooden beams are connected by joints, one wooden beam is moved in the beam axis direction and the horizontal reinforcing bars protruding from the wooden beam are inserted into the holes of the other wooden beam. There is no need to do this, and the wooden beams can be installed by simply dropping them from above, making construction easier.

It is preferable that the shear resistance member is a perforated steel dowel provided along the vertical direction.
In this case, the shear force can be reliably transmitted due to the shear resistance of the concrete at the joint filled in the hole of the perforated steel plate dowel, and the shear resistance member has a structure with high strength and high rigidity.

It is also desirable that a shear resistance member protruding from a column below the joint to a midway point in the vertical direction of the joint is embedded in the joint.
By transmitting shear force between the column and the joint using the above-mentioned shear resistance member, there is no need to arrange many vertical reinforcing bars etc. within the joint, simplifying the configuration inside the joint and making construction easier. .

It is also desirable that a vertical reinforcing bar that is integrally continuous between the columns above and below the joint be arranged so as to penetrate through the joint.
Regarding the vertical reinforcing bars mentioned above, by arranging one vertical reinforcing bar continuously between the upper and lower columns, there is no need to connect the vertical reinforcing bars with mechanical joints, etc. within the joint, making construction easier. .

The joint hardware includes an end plate provided on the end surface of the wooden beam, and a joint plate embedded in the end of the wooden beam on the joint side, and the horizontal reinforcing bar penetrates the end plate. do. Further, it has flanges that are joined to the upper and lower ends of the end plate and arranged on the upper and lower surfaces of the end of the joint part side of the load support part of the wooden beam , and the upper and lower flanges support the load. It is also desirable that the parts be sandwiched .
The joining hardware can be reliably joined to the wooden beam by the above-mentioned joining plate, and the upper and lower flanges can support both the long-term load applied to the wooden beam and the shear force during an earthquake.

It is also desirable that a slab be provided above the joint, and that a convex portion protruding from the slab be buried in a column above the slab.
Thereby, shear force can be transmitted between the column above the slab and the slab, and the number of vertical reinforcing bars and the like can be reduced.

According to the present invention, it is possible to provide a column-beam joint structure etc. that can be easily constructed.

FIG. 1 is a diagram showing a joining structure 1; FIG. 8 is a diagram showing a joining hardware 8; 1 is a diagram showing a method of constructing a joining structure 1. FIG. A diagram showing a joining structure 1a. A diagram showing a joining metal fitting 8a. A diagram showing a joining structure 1b. The figure which shows the construction method of the joining structure 1b. A diagram showing a joining structure 1c. A diagram showing a joining metal fitting 8c.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

[First embodiment]
(1.Joint structure 1)
FIG. 1(a) is a diagram showing a joining structure 1 according to a first embodiment of the present invention. This joint structure 1 connects a wooden column 2 and a wooden beam 4 via a joint 3 made of concrete. 1(b) is a vertical cross section of the wooden beam 4, and FIG. 1(c) is a horizontal cross section of the joint 3. FIGS. 1(b) and 1(c) correspond to cross sections taken along lines AA and BB in FIG. 1(a), respectively. Further, FIG. 1(a) corresponds to a cross section taken along line CC in FIG. 1(c).

The wooden pillar 2 is a pillar made of wood, and the wooden beam 4 is a beam made of wood. As the wood material, LVL (Laminated Veneer Lumber), CLT (Cross Laminated Timber), BP material, laminated wood, etc. can be used, but there is no particular limitation.

The wooden column 2 has a rectangular cross section perpendicular to the axial direction (hereinafter simply referred to as the cross section), and has a flame retardant layer 22 provided around a load support portion 21 located at the center of the cross section. There is. The flame retardant layer 22 is made of wood impregnated with a chemical.

The wooden beam 4 also has a structure in which a flame retardant layer 42 similar to the above is provided around a load support portion 41 located at the center of the rectangular cross section. However, the upper surface of the load support part 41 is in contact with the slab 5, and the flame retardant layer 42 is omitted.

In the joint structure 1, wooden pillars 2 are arranged above and below the joint part 3. The plane of the joint 3 is rectangular, and its dimensions correspond to the dimensions of the cross section of the wooden column 2. The concrete of the joint 3 is continuous with the concrete of the slab 5 provided above, and the upper wooden column 2 is placed on the slab 5.

Both ends of an integrally continuous vertical reinforcing bar 6 are embedded in the ends of the upper and lower wooden pillars 2 on the side of the joint 3. The vertical reinforcing bars 6 are arranged so as to penetrate the joint 3 and the slab 5, and are buried in the concrete of the joint 3 and the slab 5. The vertical reinforcing bars 6 may be deformed reinforcing bars or threaded reinforcing bars, but there is no need to switch between the deformed reinforcing bars and the threaded reinforcing bars midway, as in Patent Document 1 mentioned above.

Both ends of the vertical reinforcing bar 6 are connected to the load supporting portions 21 of the upper and lower wooden columns 2 by GIR (Glued in Rod). GIR (Glued in Rod) joining is a joining method in which the end of the vertical reinforcing bar 6 is inserted into a hole formed in the load support part 21, and the hole is filled with adhesive. As shown in FIG. 1(c), the vertical reinforcing bars 6 are arranged at a total of eight locations, which correspond to the corners of the rectangle and the center of each side of the rectangle, on the plane, and the joints are placed so as to surround these vertical reinforcing bars 6. The hoop reinforcement 7 is buried in the concrete of 3. The hoop lines 7 are arranged in multiple stages with vertical intervals.

The lower part of the circular steel pipe 9 is buried in the upper surface of the load support part 21 of the lower wooden column 2. The upper part of the circular steel pipe 9 protrudes in a convex shape from the load support part 21 to the middle of the joint part 3 in the vertical direction, and by embedding this convex part (shear resistance member) in the concrete of the joint part 3, the joint part 3 Transmission of shear force becomes possible between the wooden column 2 and the wooden column 2 below.

The circular steel pipe 9 is also buried in the upper surface of the slab 5, and the upper part of the circular steel pipe 9 protrudes convexly from the slab 5. By inserting this convex portion into the load support portion 21 of the upper wooden column 2, it becomes possible to transmit shear force between the slab 5 and the wooden column 2 above it.

The wooden beams 4 are arranged on both left and right sides of the joint 3. Joining hardware 8 is provided at the ends of the left and right wooden beams 4 on the joint portion 3 side. The joining hardware 8 has the function of once supporting the shearing force of the wooden beam 4 and transmitting this to the joining part 3.

FIG. 2 is a diagram showing the joining metal fitting 8. As shown in FIG. The joining hardware 8 is formed by combining steel plates and the like, and has an end plate 81, a joining plate 82, a flange 83, a perforated steel plate dowel 84, and the like.

The end plate 81 is a plate material arranged along the end surface of the load support part 41 of the wooden beam 4 on the joint part 3 side. The joining plate 82 and the flange 83 are plate materials that protrude from the end plate 81 toward the wooden beam 4 side, and the joining plate 82 is arranged at the center portion of the end plate 81 in the width direction with the plate surface in the vertical direction. The flange 83 is a horizontal plate member that is joined to the upper and lower ends of the end plate 81 and the joining plate 82.

The joining hardware 8 is constructed by passing the horizontal reinforcing bar 10 protruding from the load supporting part 41 of the wooden beam 4 through the hole 811 of the end plate 81, and inserting the joining plate 82 into the slit 411 formed in the load supporting part 41 in the beam axis direction. It is arranged at the end of the load support part 41 on the joint part 3 side. At this time, the hole 821 provided in the joint plate 82 and the hole 413 provided in the load support part 41 in the width direction of the wooden beam 4 are continuous. By disposing the drift pin 85 through these holes 821 and 413, the joint metal fitting 8 is fixed to the end of the load support part 41 on the joint part 3 side.

The flange 83 is arranged in a recess 412 provided above and below the load support section 41 . The upper and lower flanges 83 are provided to receive long-term loads from the wooden beam 4 and shear forces during earthquakes, and the shear forces received by these flanges 83 are transferred to the perforated steel plate dowel 84 via the joint plate 82. communicated. By providing the recess 412, the upper and lower flanges 83 can be accommodated in the same plane as the upper and lower surfaces of the load support part 41, but the recess 412 is omitted and the upper and lower flanges 83 are arranged above and below the load support part 41. It is also possible.

The perforated steel plate dowel 84 transmits the above-mentioned shearing force to the joint portion 3. The perforated steel plate dowel 84 is a plate material that protrudes from the end plate 81 to the middle of the joint portion 3 in the horizontal direction, and is arranged at the center portion of the end plate 81 in the width direction with the plate surface in the vertical direction.

The perforated steel plate dowel 84 is buried in the joint part 3, and the hole 841 (see FIG. 1(a)) of the perforated steel plate dowel 84 is filled with concrete of the joint part 3. The perforated steel plate dowel 84 functions as a shear resistance member that transmits shear force due to the shear resistance of the concrete. The perforated steel plate dowel 84 is disposed only at the middle portion of the end plate 81 in the height direction, and the amount of steel material is reduced compared to the case where the perforated steel plate dowel 84 is disposed over the entire height of the end plate 81.

One end of the horizontal reinforcing bar 10 is GIR-jointed to the end of the load-bearing part 41 of the wooden beam 4 on the joint part 3 side, and the other end passes through the hole 811 of the end plate 81 of the joining hardware 8. Projects into the concrete at joint 3. The ends of the horizontal reinforcing bars 10 protruding from the left and right wooden beams 4 of the joint 3 are connected by a joint 11 within the joint 3, as shown in FIG. 1(a). Although a mechanical joint can be used as the joint portion 11, it is not limited to this.

(2. Construction method of joining structure 1)
To construct the joint structure 1, after constructing the lower wooden pillar 2 on site, as shown by the arrow in FIG. 4 is dropped from above and installed on the lower wooden pillar 2 as shown in FIG. 3(b). The vertical reinforcing bars 6 and the circular steel pipe 9 are fixed in advance to the upper end portion of the load support portion 41 of the lower wooden column 2. The joining hardware 8 and the horizontal reinforcing bars 10 are attached to the wooden beam 4 on-site, but may be done in advance at a factory or the like.

When installing the wooden beam 4, the end of the lower flame-retardant layer 42 on the joint portion 3 side is placed on the flame-retardant layer 22 of the wooden column 2. This prevents the flame retardant layer 42 on the lower side of the wooden beam 4 from peeling off from the load support part 41 due to gravity. In addition, the upper surface of the flame retardant layer 22 of the wooden column 2 is located at a lower position than the upper surface of the load support part 21. The top surface will be at the same height.

After this, as shown in FIG. 3(b), the tips of the horizontal reinforcing bars 10 of the left and right wooden beams 4 are connected with the joint part 11, and the hoop reinforcements 7, etc. are arranged, and then as shown in FIG. 3(c). Concrete is poured for the joint 3 and slab 5 as shown. A circular steel pipe 9 is buried in the upper surface of the slab 5. Further, the end plate 81 of the joint hardware 8 functions as a formwork when pouring concrete for the joint portion 3, and when pouring concrete for the joint portion 3, it is only necessary to arrange the remaining necessary formwork.

Thereafter, as shown by the arrow in FIG. It is inserted into the hole 211 or cut 212 formed in the support part 21. The hole 211 is filled with an adhesive, thereby forming the bonding structure 1 shown in FIG. 1(a) and the like.

As described above, in this embodiment, when joining the wooden column 2 and the wooden beam 4 via the concrete joint 3, the joining hardware 8 is provided at the end of the wooden beam 4 on the joint 3 side. A perforated steel plate dowel 84 protruding from the joint hardware 8 is buried in the concrete of the joint portion 3. Further, horizontal reinforcing bars 10 protruding from the wooden beams 4 on both sides of the joint 3 are connected by joints 11 within the joint 3. By transmitting shear force between the wooden beam 4 and the joint 3 using the joint hardware 8 described above, there is no need to arrange many through bolts or horizontal reinforcing bars 10 within the joint 3, and the structure within the joint 3 can be improved. This simplifies construction and makes construction easier. Further, in this embodiment, since the horizontal reinforcing bars 10 protruding from the wooden beam 4 are connected by the joint part 11, one wooden beam 4 is moved in the beam axis direction and the horizontal reinforcing bars 10 protruding from the wooden beam 4 are connected to the other wooden beam 4. There is no need to insert the wooden beam 4 into a hole, and the wooden beam 4 can be installed by simply dropping it from above, making construction easier.

Further, in this embodiment, shear force can be reliably transmitted due to the shear resistance of the concrete of the joint portion 3 filled in the hole 841 of the perforated steel plate dowel 84, and the structure also has high yield strength and high rigidity. Furthermore, in this embodiment, by transmitting shear force between the wooden column 2 and the joint 3 using the circular steel pipe 9 provided on the wooden column 2 below the joint 3, a large number of vertical reinforcing bars are installed in the joint 3. 6 etc., the configuration inside the joint part 3 can be simplified, and construction can be facilitated.

Regarding the above-mentioned vertical reinforcing bars 6, in this embodiment, the vertical reinforcing bars 6 are continuously arranged between the upper and lower wooden columns 2, and the vertical reinforcing bars 6 are connected to each other within the joint 3 using a mechanical joint or the like. There is no need to do this, making construction easier. However, it is possible to connect the tips of the vertical reinforcing bars protruding from the upper and lower wooden columns 2 to each other within the joint 3 using a joint such as a mechanical joint.

The circular steel pipe 9 is also provided on the upper surface of the slab 5, and its upper part is buried in the wooden column 2 above the slab 5, so that shear force can be transmitted between the wooden column 2 and the slab 5, and the vertical reinforcing bar 9 etc. can be reduced.

Further, the joining hardware 8 can be reliably joined to the wooden beam 4 by the joining plate 82, and can support both the long-term load applied to the wooden beam 4 and the shear force during an earthquake by the upper and lower flanges 83.

However, the present invention is not limited to the above embodiments. For example, in this embodiment, the wooden column 2 and the wooden beam 4 are connected by the joint structure 1, but it is also possible to use a reinforced concrete column instead of the wooden column 2, and a composite structure of concrete and wooden materials can be used. It can also be used as a pillar.

Furthermore, the joint structure 1 of the present embodiment is applied to a rigid frame structure with a single plane, but a rigid frame structure in two directions, that is, a frame shown in FIG. may be applied to joints of In this case, the wooden beams 4 are provided not only on the left and right sides of the joint 3 but also on the front and rear of the joint 3 (corresponding to the top and bottom in FIG. 1(c)).

Furthermore, the configurations of the wooden pillars 2 and wooden beams 4 are not limited to the above. For example, a decorative material may be provided on the outside of the flame-retardant layers 22, 42, or a gypsum board or the like can be used as the flame-retardant layers 22, 42. Flame retardant materials may also be used. Further, although the cross sections of the wooden pillars 2 and the wooden beams 4 are rectangular, the shapes are not particularly limited.

Further, in this embodiment, a perforated steel plate dowel 84 is used as the shear resistance member of the joining hardware 8, but a bar-shaped protruding member such as a headed stud or a reinforcing bar may be used instead of the perforated steel plate dowel 84. Similarly, although the circular steel pipe 9 is used as the shear resistance member of the wooden column 2 in this embodiment, it is also possible to use a bar-shaped protruding member such as a headed stud or a reinforcing bar instead of the circular steel pipe 9.

Further, in this embodiment, the joint hardware 8 is fixed to the load support portion 41 of the wooden beam 4 using the drift pin 85, but the present invention is not limited to this, and the structure can be achieved even without the drift pin 85.

Other shapes, configurations, etc. of the joining hardware 8 are not particularly limited either. Examples using different joining hardware will be described below as second to fourth embodiments. In these embodiments, configurations that are different from the embodiments described up to that point will be mainly described, and similar configurations will be designated by the same reference numerals in the figures and the like, and a description thereof will be omitted. Furthermore, the configurations described in each embodiment, including the first embodiment, can be combined as necessary.

[Second embodiment]
4(a) to 4(c) show cross sections similar to FIGS. 1(a) to 1(c) regarding a joining structure 1a according to a second embodiment of the present invention. The joining structure 1a differs from the joining structure 1 of the first embodiment mainly in the shape of the joining hardware 8a.

FIG. 5 is a diagram showing the joining metal fitting 8a. The joining hardware 8a has an end plate 81, a joining plate 82, a flange 83, and a perforated steel plate dowel 84 similar to those of the above-mentioned joining hardware 8, but the perforated steel dowel 84 has two parts on both sides of the end plate 81 in the width direction. It is provided over the entire height of the end plate 81.

When attaching the joint hardware 8a to the wooden beam 4, the horizontal reinforcing bar 10 protruding from the load support part 41 of the wooden beam 4 is passed through the hole 811 of the end plate 81, but the end of the load support part 41 on the joint part 3 side The above-mentioned holes are not provided in the joint plate 82 and the joint plate 82, and the cross-sectional loss of the wooden beam 4 is avoided.

Moreover, in this embodiment, as shown in FIGS. 4(a) and 4(c), instead of the circular steel pipe 9 described above, a cross plate 9a made by combining steel plates in a planar cross shape is used. The lower part of the cross plate 9a is buried in the load support part 21 of the lower wooden column 2 and the upper surface of the slab 5, and its upper part protrudes convexly from the wooden column 2 and slab 5, and this convex part (shear resistance member) is buried in the concrete of the joint part 3 or the load-bearing part 21 of the upper wooden column 2. Note that reference numeral 13 in FIG. 4(c) is a decorative material provided on the outer surface of the joint portion 3.

[Third embodiment]
6(a) to 6(c) show cross sections similar to FIGS. 1(a) to 1(c) regarding a joining structure 1b according to a third embodiment of the present invention. In the joint structure 1b, the projecting length of the perforated steel plate dowel 84 of the joint hardware 8b is increased, and by passing the hoop reinforcement 7a through the hole 841, the shear resistance of the concrete in the hole 841 is increased, and the shear force is reduced. The main difference from the joining structure 1 of the first embodiment is that the transmission performance is improved.

As shown in FIG. 6(c), the hoop reinforcement 7a is formed by combining the ends of a pair of reinforcing bars 71 that are U-shaped in plan to form an annular shape. By passing through the holes 841 of 84 and fixing the ends of both reinforcing bars 71 to each other by welding or the like, the hoop reinforcing bars 7a can be easily arranged when constructing the joint structure 1b.

In addition, in this embodiment, the central part of the cross section of the load-bearing part 21 of the wooden column 2 below the joint 3 is convex upward, and this convex part 9b (shear resistance member) is buried in the concrete of the joint 3. By doing so, it is possible to transmit shear force between the wooden column 2 and the joint portion 3.

Regarding the upper wooden column 2, the load support part 21 is in contact with the upper surface of the joint part 3, and both sides thereof are sandwiched between the slabs 5. Thereby, shear force can be transmitted between the upper wooden column 2 and the slab 5. The flame retardant layer 22 of the wooden column 2 is placed on the slab 5.

To construct the joint structure 1b, after constructing the lower wooden pillar 2, as shown by the arrow in FIG. It is dropped from above and placed on the lower wooden pillar 2 as shown in FIG. 7(b). Thereafter, the ends of the horizontal reinforcing bars 10 of the left and right wooden beams 4 are connected to each other by the joint part 11, the hoop reinforcements 7a are arranged, and the joint part 3 is concreted as shown in FIG. 7(c).

Next, as shown by the arrow in FIG. 7(c), the upper wooden column 2 is dropped from above the slab 5, and the upper end of the horizontal reinforcing bar 10 protruding from the slab 5 is formed into the load support part 21 of the wooden column 2. The adhesive is inserted into the hole 211 that has been formed, and the hole is filled with an adhesive. After the wooden pillars 2 are erected as shown in FIG. 7(d), the concrete of the slab 5 is poured, thereby forming the joint structure 1b shown in FIG. 6(a) etc.

[Fourth embodiment]
8(a) to 8(c) show cross sections similar to FIGS. 1(a) to 1(c) regarding a joining structure 1c according to the fourth embodiment of the present invention. The joining structure 1c differs from the joining structure 1 of the first embodiment mainly in the shape of the joining hardware 8c.

FIG. 9 is a diagram showing the joining metal fitting 8c. The joining hardware 8c has an end plate 81, a joining plate 82, a flange 83, and a perforated steel dowel 84 similar to the joining hardware 8, but the flange 83 is provided only at the lower end of the end plate 81, and the wooden beam 4 Supports long-term loads.

Furthermore, the joint plate 82 and the perforated steel plate dowels 84 are provided on both sides of the end plate 81 in the width direction, at positions corresponding to both ends of the load support part 41 of the wooden beam 4 in the width direction (see FIG. 8(c), etc.). (see also), the joining plate 82 has a substantially right triangular shape so as to connect the end plate 81 and the flange 83. Further, as shown in FIG. 8(a), the perforated steel plate dowel 84 is provided slightly below the center portion of the end plate 81 in the height direction, and the upper end of the perforated steel plate dowel 84 and the joint plate 82 It is located at the same height as the top of the . Note that in this embodiment, the plane dimension of the joint 3 corresponds to the cross-sectional dimension of the wooden column 2.

Furthermore, in this embodiment, as shown in FIG. 8(a), the load supporting portion 21 of the wooden column 2 below the joint portion 3 protrudes upwardly than the flame retardant layer 22, and this convex portion (shear resistance It is possible to transmit shear force between the wooden column 2 and the joint 3 by means of the wooden column 2 and the joint 3. Further, the lower part of the reinforcing bar 9c is buried in the upper end of the load supporting part 21, and the upper part of the reinforcing bar 9c is buried in the concrete of the joint part 3. This reinforcing bar 9c functions as a fail-safe against the movement of the lower wooden column 2 in the horizontal direction during an earthquake. A total of four reinforcing bars 9c are provided at positions corresponding to the four corners of the rectangle.

Further, the flame retardant layer 42 on the lower side of the wooden beam 4 is placed on the flame retardant layer 22 of the lower wooden column 2, as described above. Further, in this embodiment, the load support portion 21 of the upper wooden column 2 contacts the upper surface of the joint portion 3 in a manner that it is sandwiched between the concrete of the slab 5.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that those skilled in the art can come up with various changes or modifications within the scope of the technical idea disclosed in this application, and these naturally fall within the technical scope of the present invention. Understood.

1, 1a, 1b, 1c: Joint structure 2: Wooden column 3: Joint part 4: Wooden beam 5: Slab 6: Vertical reinforcement 7, 7a: Hoop reinforcement 8, 8a, 8b, 8c: Joint hardware 9: Circular steel pipe 9a : Cross plate 9b: Convex part 9c: Reinforcing bar 10: Horizontal reinforcing bar 11: Joint part 81: End plate 82: Joint plate 83: Flange 84: Perforated steel plate dowel

Claims (6)

A joint structure in which columns and wooden beams are joined using concrete joints,
A joining hardware is provided at the end of the wooden beam on the joint side,
A shear resistance member that protrudes from the joining hardware part way in the horizontal direction of the joining part is embedded in the joining part,
Horizontal reinforcing bars protruding from the wooden beam on both sides of the joint are connected by a joint within the joint ,
The joining hardware is
an end plate provided on the end surface of the wooden beam;
a joint plate embedded in the end of the wooden beam on the joint side;
has
the horizontal reinforcement passes through the end plate;
A joining structure characterized in that an end portion of the joining plate is fixed to the end plate so that the joining plate is perpendicular to the end plate . 2. The joint structure according to claim 1, wherein the installation range in the height direction or the position in the beam width direction of the joint plate and the shear resistance member are different. A joint structure in which columns and wooden beams are joined using concrete joints,
A joining hardware is provided at the end of the wooden beam on the joint side,
A shear resistance member that protrudes from the joining hardware part way in the horizontal direction of the joining part is embedded in the joining part,
Horizontal reinforcing bars protruding from the wooden beam on both sides of the joint are connected by a joint within the joint ,
The joining hardware is
an end plate provided on the end surface of the wooden beam;
a joint plate embedded in the end of the wooden beam on the joint side;
a flange joined to the lower end of the end plate and disposed on the lower surface of the end of the load-bearing part of the wooden beam on the joint side;
has
the horizontal reinforcement passes through the end plate;
A joint structure characterized in that the lower surface of the flange is covered with a flame retardant layer on the lower surface of the wooden beam . 4. The joint structure according to claim 3, wherein the width of the flange is smaller than the width of the wooden beam by the thickness of flame retardant layers on both sides of the wooden beam. 4. The joint structure according to claim 3, wherein the flange is disposed in a recess provided on the lower surface of the load-bearing portion of the wooden beam. The joining hardware is joined to the upper and lower ends of the end plate, and has flanges disposed on the upper and lower surfaces of the end on the joint side of the load-bearing part of the wooden beam , and the upper and lower flanges The joining structure according to claim 1 or 3, wherein the load supporting portion is sandwiched .

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