JP2013087414A - Joining hardware for hybrid structure of wooden building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide rigid joining hardware for joining a wooden column and a steel beam of a hybrid structure in a framework method for a wooden building.SOLUTION: There is provided the joining hardware between the wooden column and steel beam, the joining hardware comprising beam receiving metal fittings 3 comprising a longitudinally-long web surface 3a formed by bending a steel plate piece in a Z shape and forming bolt holes, a horizontal upper-part plate 3b at an upper end of the web surface, and a horizontal lower part provided with bolt holes at a lower end of the web surface, and a center plate protruding vertically from the web surface and lower-part plate, and provided with bolt holes, and an L-shaped piece 4 formed by bending a steel plate piece in an L shape and providing bolt holes to a longitudinal plate of a vertical piece and a horizontal plate of a horizontal piece, and being characterized in joining the wooden column and steel beam by inserting bolts into the bolt holes while the web surface 3a and longitudinal plate abut against column surface, the upper-part plate 3b is inserted at a predetermined position on the column surface, and the lower-part plate, center plate, and horizontal plate abut against the steel beam.

Description

The present invention relates to a rigid joint hardware for joining a wooden column and a steel beam with a hybrid structure (wood + steel) in a frame construction method of a wooden building.

In recent years, the effects of CO2 absorption in forests (in the case of young trees) are attracting attention from the environmental viewpoint, such as prevention of global warming. The government enforced the “Law on the Promotion of the Use of Wood in Public Buildings” on October 1 last year as a measure to promote the use of wood. Based on the significance of promoting the use of timber in public buildings, the basic direction of the law is to drastically change the past way of thinking that has been oriented toward non-wooden construction, and to make wooden construction as much as possible for public buildings. It is a law to plan. Public buildings include schools, social welfare facilities, government buildings, civil service dormitories, etc. built by the national and local governments. However, even if we want to make public buildings and private non-housing large-scale structures made of wood, we cannot divert the technology of wooden houses that have accumulated due to the difference in scale. In other words, there are cases where it is difficult to make a wooden structure in terms of structure planning and cost, and the current situation is that large-scale wooden techniques are not systematized.

A conventional wooden frame construction method is a construction method in which a frame is first composed of columns and beams, and walls and floors are attached thereto. There are “through columns” and “tube columns”, and the structural role of the columns is to support vertical loads on both the through columns and the tube columns, and to resist compressive and tensile forces generated on the outer periphery as bearing walls. is there. Further, it is to prevent deformation on the outer wall surface that receives wind pressure (horizontal force). The role of the beam is not only to transmit the vertical load transmitted from the floor or the like to the column, but also to resist the compressive force and tensile force generated at the outer periphery during horizontal load.

Comparing the Young's modulus (rigidity) of wood and steel, the Young's modulus of wood is as small as 3% to 5% of steel, so in wooden buildings, if the interval between columns (span) is increased, the comfort and fit will be increased. In view of this, the bending of wooden beams often becomes a problem. The bending of the wooden beam can be reduced by increasing the beam formation (beam height). However, using wood with a large beam cross-sectional area results in high costs. Therefore, at present, solving this problem is an urgent issue. In the future, steel beams that meet performance such as cost, strength, and fire resistance are expected to become popular as beam materials suitable for large-scale wooden buildings such as public buildings.

In recent years, joint metal fittings have been proposed in the case of using high-strength steel beams for wooden columns. For example, in Japanese Utility Model Publication No. 57-168603 (first known example), a mounting plate 5 of a beam mounting bracket 2 is brought into contact with a pillar 1 made of square material, and a plurality of bolt through holes 7 of the mounting plate 5 and Bolts 14 are passed through the plurality of bolt through holes 11 of the column 1 corresponding to this, and fastened with nuts 15 to fasten to the column 1, and the joining plate of the beam mounting bracket 2 6 is brought into contact with the tip portion of the web 9 of the beam material 3 made of I-shaped steel, and a plurality of bolt through holes 10 provided at the tip portion and a plurality of bolt through holes 8 of the joining plate 6 corresponding thereto. Further, a method is disclosed in which the beam member 3 is joined to the beam mounting bracket 2 by passing the bolts 16 and tightening the bolts 16 with the nuts 17.

Further, a joining structure and joining hardware of a wooden framework that can easily join a horizontal member such as a steel beam made of lightweight steel to a wooden pillar is disclosed in Japanese Patent Application Laid-Open No. 2010-95968 (second known example). .

Japanese Utility Model Publication No.57-168603 JP 2010-95968 A

However, the joint hardware according to the first and second known examples is devised with a brace structure while having a hybrid structure, and is applicable to a ramen structure required for a large-scale wooden building. It can be said that it is an unsuitable joint hardware.

In the case of the first known example, the flange portion of the column member and the beam member is not joined. For example, at the upper and lower ends of the joining plate 6 forming the beam mounting bracket 2, no joining plate for joining to the flange of the beam is found. Therefore, the joining plate 6 and the flange of the beam member 3 cannot be joined, and the bending stress cannot be transmitted. Further, the mounting plate 5 of the beam mounting bracket 2 is brought into contact with the pillar 1 made of square material, and the plurality of bolt through holes 7 of the mounting plate 5 and the plurality of bolt through holes 11 of the column member 1 corresponding thereto are arranged. Although the bolts 14 are passed through and tightened with the nuts 15, the plate surface of the mounting plate 5 on the side in contact with the column surface is flat and has no protrusions. Therefore, the protrusion cannot bite into the joint portion of the column member 1, and the shear strength acting on the joint portion is limited to the bolt 14 having the role of tensile stress, and sufficient shear strength cannot be obtained.

Next, the second known example is composed of a steel beam 2 made of lightweight H-shaped steel and a joint metal 3 for joining the wooden pillar 1, but the fixing portion 3 a of the joint hardware 3 is made of the wooden pillar 1. It is described that the joint 3b of the metal fitting 3 is joined to the web 2a of the steel beam 2 by bolting to the side surface 1a, and the connection between the metal fitting 3 and the flange of the steel beam 2 is not described. Therefore, the bending stress cannot be transmitted. Moreover, the fixed part 3a surface of the metal joint 3 is flat, and sufficient shear strength cannot be obtained at the joint portion of the wooden column 1.

The problem to be solved by the present invention is a ramen structure corresponding to the structural characteristics of a large-scale wooden building, for example, a public building having a long span between pillars and a pillar and a high ceiling. It provides the most important wooden columns and steel beams.

  As a result of studying to solve the above-mentioned problems, the present inventor has obtained technical knowledge of joint hardware in a ramen structure in a hybrid structure (wood + steel). The gist is as follows.

(1) In a wooden structure with wooden pillars and steel beams, a vertically long web surface in which a steel plate piece is bent into a Z shape and a plurality of bolt through holes are provided, and a wooden material at the upper end of the web surface Horizontal upper plate bent at right angles to the column direction, horizontal lower plate bent at right angles to the wooden column at the lower end of the web surface and separated from the wooden column, and provided with a plurality of bolt through holes, and web surface width At the center of the web, and a vertical portion of a vertical piece that protrudes perpendicularly from the web surface and the lower plate and is formed by a central plate provided with a plurality of bolt through holes, and a steel plate piece bent into an L-shape. An L-shaped piece formed by providing a plurality of bolt through holes in a horizontal plate of a plate and a horizontal piece, wherein the web surface and the vertical plate are in contact with a wooden column surface, and the upper plate is Inserted into a predetermined position on the wooden pillar surface, the lower plate, the central plate and the horizontal plate abut on the steel beam, By inserting bolts into the bolt through-hole, hybrid structural bonding hardware wooden structure, characterized by comprising bonding the wood pillars and steel beams.

(2) A vertically long mounting plate provided with a plurality of bolt through holes in an L-shaped vertical piece formed by bending a steel plate piece, and a horizontal shape bent at a right angle to the wooden column at the upper end of the mounting plate A top plate, a horizontal shelf plate with a plurality of bolt through holes projecting perpendicularly to the mounting plate in a direction away from the wooden pillar near the lower portion of the mounting plate, and a mounting plate and a shelf at the center of the mounting plate width A beam receiving rigid bracket formed by a middle plate protruding by providing a plurality of bolt through holes vertically from the plate, a vertical plate of a vertical piece obtained by bending a steel plate piece into an L shape, and a horizontal plate of a horizontal piece The L-shaped piece is formed by providing a plurality of bolt through-holes, and the mounting plate and the vertical plate are in contact with the wooden column surface, and the top plate is placed at a predetermined position on the wooden column surface. The shelf plate, the intermediate plate and the horizontal plate are in contact with the steel beam, and the bolt is inserted through the bolt through hole. Hybrid structural bonding hardware wooden structure, characterized by comprising bonding the wood pillars and steel beams.

(A) According to the present invention, it is a rigid joint hardware capable of transmitting shear, axial force and bending stress. Therefore, because it can have a ramen structure, it is possible to increase the ceiling and lengthen the long span, and attach importance to seismic resistance and durability corresponding to the structural characteristics of public buildings. Design can be made rationally, and effects such as a tenacious structure can be obtained.

(B) According to the hybrid hardware for a wooden structure according to the present invention, a beam receiving bracket or the like is bonded to a wooden column using a fixing bracket such as a bolt, and an upper plate of the beam receiving bracket is bonded to the wooden column. It bites into the part and is tightly joined. Therefore, the shear strength is increased and a high bonding strength can be obtained.

It is a schematic diagram which shows the 1st Example of the junction part of the wood pillar and steel beam of the joint hardware for hybrid structures of the wooden building which concerns on this invention. It is a disassembled perspective view of the junction part of the metal joint which shows the 1st Example concerning the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows 1st Examples, such as a beam receiving metal fitting concerning this invention, (a) is a schematic diagram of a beam receiving metal fitting, (b) is a schematic diagram of an L-shaped piece. It is a schematic diagram which shows the 2nd Example of the junction part of the wooden pillar and steel beam of the joint hardware for hybrid structures of the wooden building which concerns on this invention. It is a disassembled perspective view of the junction part of the metal joint which shows the 2nd Example which concerns on this invention. It is explanatory drawing which shows 2nd Examples, such as a beam joining bracket concerning this invention, (a) is a schematic diagram of a beam receiving rigid bracket, (b) is a schematic diagram of an L-shaped piece.

Hereinafter, based on FIGS. 1-6, two examples of embodiment of the metal fitting for hybrid structures of the wooden construction which concerns on this invention are demonstrated.
Example 1
FIG. 1 is a schematic view showing a first embodiment of a joint portion between a wooden column and a steel beam for a hybrid structure of a wooden structure according to the present invention, and FIG. 2 is a first embodiment according to the present invention. It is a disassembled perspective view of the junction part of the metal joint which shows an example. In this example, a wooden pillar 1, a steel beam 2, an upper flange 2a, a lower flange 2b, a web 2c, a beam support 3, a web surface 3a, an upper plate 3b, a lower plate 3c, a central plate 3d, an L-shaped piece. 4, vertical plate 4a, horizontal plate 4b, rib 4c, bolt through hole 5, bolt 6, long bolt 7, washer 8, nut 9, long bolt through hole 10 and flange insertion port 11. Hereinafter, it demonstrates along this.

First, the structure of the parts of the joint hardware for hybrid structure which joins the wooden pillar 1 and the steel beam 2 will be described. As shown in FIG. 2, the beam support 3 includes a web surface 3 a of the beam support 3 that contacts the surface of the wooden column 1 (vertical material), an upper plate 3 b that is inserted into the flange insertion port 11 of the wooden column 1, The lower plate 3c joined to the lower flange 2b of the steel beam 2 and the central plate 3d joined to the web 2c of the steel beam 2 are formed. The L-shaped piece 4 is formed by a vertical vertical plate 4 a that abuts the wooden pillar 1 and a horizontal horizontal plate 4 b that is joined to the upper flange 2 a of the steel beam 2.

Next, the beam bracket 3 will be described. As shown in FIG. 2, the beam bracket 3 has a plurality of bolt through holes 5 through which the long bolts 7 are inserted in the web surface 3a, and the upper plate 3b is formed horizontally at the upper end of the web surface 3a. Is provided. This upper plate 3b is inserted into the flange insertion port 11 processed into a concave shape on the wooden pillar 1, and is tightly joined to the wooden pillar 1 together with the tension bolt (long bolt 7), thereby being made of steel. A high shear strength can be achieved against the vertical forces such as fixed load and carrying load received by the beam 2. Subsequently, the lower end of the web surface 3a is provided with a horizontal lower plate 3c and a center plate 3d projecting vertically from the center of the width of the web surface 3 so that it can be joined to the steel beam 2. Each plate is provided with a plurality of bolt through holes 5. The L-shaped piece 4 is formed by a vertical plate 4a as a vertical piece and a horizontal plate 4b as a horizontal piece. Both the pieces are provided with a plurality of bolt through holes 5 so that long bolts 7 and bolts 6 are used and can be joined to the wooden pillar 1 and the steel beam 2. By attaching the rib 4c, it is possible to increase the strength of the bent portion and improve the rigidity.

Next, the bonding mode of the hybrid structure bonding hardware will be described. As shown in FIGS. 1 and 2, the beam bracket 3 includes a long bolt 7 in which the upper plate 3 b is inserted into the flange insertion port 11 of the wooden pillar 1 and the long bolt through hole 10 and the washer 8 are inserted. It is fastened with a nut 9 and attached to the wooden pillar 1. Next, the center plate 3d of the beam bracket 3 attached to the wooden column 1 is inserted and fitted into the space (gap) formed between the webs 2c of the steel beam 2 so that the center plate 3d is fitted. And the web 2c, and the lower flange 2b and the lower plate 3c are fastened with bolts 6 and nuts 9, and the steel beam 2 is fixed. As an example, a double light groove steel is described as a representative of the steel beam 2. However, the present invention is not limited to this, and the shape is not limited as long as sufficient strength can be obtained as a beam material. Absent. For example, H-section steel, lightweight H-section steel, etc. can be mentioned. Next, the horizontal plate 4b of the L-shaped piece 4 and the upper flange 2a of the steel beam 2, and the vertical plate 4a of the L-shaped piece 4 and the wooden column 1 are brought into contact with each other, and the bolt 6 and the long bolt 7 is fastened with a nut 9, and the wooden column 1 and the steel beam 2 are firmly joined. The force transmission is composed of the long bolt 7 inserted through the wooden column 1 for the tensile force acting on the outer periphery, and the wooden column 1 and the steel beam 2 for the compressive force. In addition, the shearing force is mainly borne by the center plate 3d, and the bending is borne by the beam receiving bracket 3, the L-shaped piece 4 and the steel beam 2. That is, a moment resistance junction type system is constructed by arranging the components described above.

The enforcement method will be explained according to the work procedure. In the construction site, first, as shown in FIG. 2, the upper plate 3 b of the beam support 3 is inserted into the flange insertion port 11 processed into the wooden column 1, and the washer 8 and the long plate are inserted from the outside of the wooden column 1. The long bolt 7 inserted through the long bolt through hole 10 is fastened with a nut, and the beam support 3 is coupled to the wooden column 1. It should be noted that the place where the beam support 3 is joined to the wooden pillar 1 is originally desirable in terms of quality for work in the factory, but it is low after considering site conditions, curing conditions, transportation costs, construction period, etc. Cost selection.

Subsequently, as shown in FIG. 2, first, the wooden pillar 1 is vertically built by the construction work, and the horizontal plate is placed on the central plate 3 d protruding from the beam receiving metal fitting 3 attached to the wooden pillar 1. The web 2c of the steel beam 2 is abutted, and the central plate 3d and the web 2c, and the lower flange 2b and the lower plate 3c are fastened using bolts 6 and nuts 9, and the steel beam 2 is fixed. Next, the L-shaped piece 4 is placed on the upper flange 2a of the steel beam 2, and the holes of the bolt through holes 5 of the upper flange 2a and the bolt through holes 5 of the horizontal plate 4b are matched. Thus, at the same time as inserting the bolt 6, the bolt through hole 5 of the vertical plate 4 a of the L-shaped piece 4 and the hole of the long bolt through hole 10 of the wooden pillar 1 are matched, and the long bolt 7 is inserted, Each bolt is fastened with a nut 9, and the wooden pillar 1 and the steel beam 2 are joined. Therefore, it is possible to obtain a rigid frame structure having a high moment resistance performance with a rigid joint metal capable of transmitting shear, axial force and moment.

(Example 2)
FIG. 4 is a schematic view showing a second embodiment of a joint portion between a wooden column and a steel beam for a hybrid structure of a wooden structure according to the present invention, and FIG. 5 shows a second embodiment according to the present invention. It is a disassembled perspective view of the junction part of the metal joint which shows an example. In this example, a wooden pillar 1, a steel beam 2, an upper flange 2a, a lower flange 2b, a web 2c, a beam receiving bracket 12, a mounting plate 12a, a top plate 12b, a shelf plate 12c, a middle plate 12d, an L-shaped peak 4, vertical plate 4 a, horizontal plate 4 b, rib 4 c, bolt through hole 5, bolt 6, long bolt 7, washer 8, nut 9, long bolt through hole 10, and flange insertion port 11. Hereinafter, it demonstrates along this.

First, the structure of the parts of the joint hardware for hybrid structure which joins the wooden pillar 1 and the steel beam 2 will be described. As shown in FIG. 5, the beam receiving bracket 12 includes a mounting plate 12 a for the beam receiving bracket 12 that contacts the surface of the wooden column 1 (vertical material), and a top plate 12 b that is inserted into the flange insertion port 11 of the wooden column 1. And a shelf plate 12c joined to the lower flange 2b of the steel beam 2 and an intermediate plate 12d joined to the web 2c of the steel beam 2. The L-shaped piece 4 is formed by a vertical vertical plate 4 a that abuts the wooden pillar 1 and a horizontal horizontal plate 4 b that is joined to the upper flange 2 a of the steel beam 2.

Next, the beam receiving bracket 12 will be described. As shown in FIG. 5, the beam receiving rigid bracket 12 has a plurality of bolt through holes 5 through which the long bolts 7 are inserted in the mounting plate 12a, and a horizontal top plate at the upper end of the mounting plate 12a. 12b is provided. This top plate 12b is inserted into the flange insertion port 11 processed into a concave shape on the wooden pillar 1, and tightly joined to the wooden pillar 1 together with the tension bolt (long bolt 7), thereby making the steel plate A high shear strength can be achieved against the vertical forces such as fixed load and carrying load received by the beam 2. Subsequently, a horizontal shelf 12c and a middle plate 12d protruding vertically from the center of the width of the mounting plate 12a are provided in the vicinity of the lower portion of the mounting plate 12a so as to be joined to the steel beam 2. Each plate is provided with a plurality of bolt through holes 5. The L-shaped piece 4 is formed by a vertical plate 4a as a vertical piece and a horizontal plate 4b as a horizontal piece. Both the pieces are provided with a plurality of bolt through holes 5 so that long bolts 7 and bolts 6 are used and can be joined to the wooden pillar 1 and the steel beam 2. By attaching the rib 4c, it is possible to increase the strength of the bent portion and improve the rigidity.

Next, the bonding mode of the hybrid structure bonding hardware will be described. As shown in FIGS. 4 and 5, the beam receiving bracket 12 includes a long bolt 7 in which the top plate 12 b is inserted into the flange insertion port 11 of the wooden column 1 and the long bolt through hole 10 and the washer 8 are inserted. Is fastened with a nut 9 and attached to the wooden pillar 1. Next, the middle plate 12d of the beam receiving rigid bracket 12 attached to the wooden column 1 is inserted into the space portion (gap) formed between the webs 2c of the steel beam 2 so that the middle plate is fitted. 12d and the web 2c, and the lower flange 2b and the shelf board 12c are fastened with the bolt 6 and the nut 9, and the steel beam 2 is fixed. As an example, a double light groove steel is described as a representative of the steel beam 2. However, the present invention is not limited to this, and the shape is not limited as long as sufficient strength can be obtained as a beam material. Absent. For example, H-section steel, lightweight H-section steel, etc. can be mentioned. Next, the horizontal plate 4b of the L-shaped piece 4 and the upper flange 2a of the steel beam 2, and the vertical plate 4a of the L-shaped piece 4 and the wooden column 1 are brought into contact with each other, and the bolt 6 and the long bolt 7 is fastened with a nut 9, and the wooden column 1 and the steel beam 2 are firmly joined. The force transmission is composed of the long bolt 7 inserted through the wooden column 1 for the tensile force acting on the outer periphery, and the wooden column 1 and the steel beam 2 for the compressive force. The shearing force is mainly borne by the intermediate plate 12d, and the bending is supported by the beam receiving rigid bracket 12, the L-shaped piece 4 and the steel beam 2. That is, a moment resistance junction type system is constructed by arranging the components described above.

The enforcement method will be explained according to the work procedure. In the construction site, first, as shown in FIG. 4, the top plate 12 b of the beam receiving bracket 12 is inserted into the flange insertion port 11 processed into the wooden column 1, and the washer 8 is attached from the outside of the wooden column 1. The long bolt 7 inserted through the long bolt through hole 10 is fastened with a nut, and the beam receiving rigid bracket 12 is coupled to the wooden column 1. It should be noted that the work place in the factory is desirable in terms of quality for the place where the beam support rigid bracket 12 is joined to the wooden pillar 1, but after considering the site conditions, curing, transportation costs, construction period, etc. A low cost choice.

Subsequently, as shown in FIG. 5, first, the wooden pillar 1 is vertically built by the construction work, and is horizontally placed on the intermediate plate 12 d protruding from the beam receiving rigid bracket 12 attached to the wooden pillar 1. The web 2c of the steel beam 2 which is a material is brought into contact, and the intermediate plate 12d and the web 2c, and the lower flange 2b and the shelf plate 12c are fastened by using bolts 6 and nuts 9, and the steel beam 2 is fixed. . Next, the L-shaped piece 4 is placed on the upper flange 2a of the steel beam 2, and the holes of the bolt through holes 5 of the upper flange 2a and the bolt through holes 5 of the horizontal plate 4b are matched. Thus, at the same time as inserting the bolt 6, the bolt through hole 5 of the vertical plate 4 a of the L-shaped piece 4 and the hole of the long bolt through hole 10 of the wooden pillar 1 are matched, and the long bolt 7 is inserted, Each bolt is fastened with a nut 9, and the wooden pillar 1 and the steel beam 2 are joined. Therefore, it is possible to obtain a rigid frame structure having a high moment resistance performance with a rigid joint metal capable of transmitting shear, axial force and moment.

The material of the above-mentioned hardware is shown as a general structural rolled steel (SS400) as a representative. However, the present invention is not limited to this, and any known material can be used as long as a functionally satisfactory strength can be obtained. good. For example, a casting etc. can be mentioned. The size of the hardware is determined by various conditions at the time of design, but the thickness of the plate is about 4.5 to 12.0 mm, and the width is combined with the beam receiving bracket and the L-shaped piece. The height is about 150 to 300 mm, the height is about 300 to 700 mm, and the length is about 450 to 750 mm.

As described above, according to the present invention of the joint hardware for a hybrid structure of a wooden building, it is a moment resistance type rigid joint hardware. This is a joint system that can transmit shear, axial force, and bending stress at the joint between a wooden column and a steel beam. In other words, structural design that emphasizes earthquake resistance and durability is streamlined by providing joint hardware that can be used for the ramen construction method, etc., corresponding to the structural characteristics of large-scale wooden buildings such as public buildings. The effect of a tenacious structure can be obtained. Therefore, it is possible to contribute to the current situation where large-scale wooden technology is not systematized, and the utility to society in the construction industry is extremely large.

1 Wood pillar 2 Steel beam
2a Upper flange 2b Lower flange 2c Web 3 Beam receiving bracket 3a Web surface 3b Upper plate 3c Lower plate 3d Center plate 4 L-shaped piece 4a Vertical plate 4b Horizontal plate 4d Rib 5 Bolt through hole 6 Bolt
7 Long bolt 8 Washer 9 Nut 10 Long bolt through hole 11 Flange insertion port 12 Beam receiving rigid bracket 12a Mounting plate 12b Top plate 12c Shelf plate 12d Middle plate

Claims (2)

In the joint of a wooden column and a steel beam in a wooden building, a steel plate piece is bent in a Z-shape, a vertically long web surface provided with a plurality of bolt through holes, and the top end of the web surface in the direction of the wooden column A horizontal upper plate bent at a right angle, a horizontal lower plate bent at a right angle in the direction away from the wooden pillar at the lower end of the web surface, and provided with a plurality of bolt through holes, and the center of the web surface width , Projecting vertically from the web surface and the lower plate, a beam bracket formed by a central plate provided with a plurality of bolt through holes, and a vertical plate of vertical pieces obtained by bending a steel plate piece into an L shape, An L-shaped piece formed by providing a plurality of bolt through holes in a horizontal plate of a horizontal piece,
The web surface and the vertical plate are in contact with the wooden column surface, the upper plate is inserted into a predetermined position of the wooden column surface, the lower plate, the central plate and the horizontal plate are in contact with the steel beam, A metal fitting for a hybrid structure of a wooden construction, wherein a bolt is inserted into the bolt through hole and a wooden column and a steel beam are joined. A vertically long mounting plate provided with a plurality of bolt through holes in an L-shaped vertical piece formed by bending a steel plate piece, and a horizontal top plate bent at a right angle to the wooden column at the upper end of the mounting plate; In the vicinity of the lower part of the mounting plate, a horizontal shelf plate with a plurality of bolt through-holes protruding at right angles to the mounting plate in a direction away from the wooden pillar, and at the center of the mounting plate width, perpendicular to the mounting plate and the shelf plate A plurality of bolt through holes, a beam receiving rigid bracket formed of a projecting middle plate, a vertical plate of a vertical piece obtained by bending a steel plate piece into an L shape, and a horizontal plate of a horizontal piece. An L-shaped piece formed by providing a bolt through hole,
The mounting plate and the vertical plate are in contact with the wooden column surface, the top plate is inserted into a predetermined position of the wooden column surface, the shelf plate, the middle plate and the horizontal plate are in contact with the steel beam, A metal fitting for a hybrid structure of a wooden construction, wherein a bolt is inserted into the bolt through hole and a wooden column and a steel beam are joined.

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