JP2021195842A - Joint structure of wooden member and steel member, and steel joint element - Google Patents

Abstract

[Problem] To provide a joint structure between a wooden member and a steel member, and a steel connector, which has high energy absorbing performance, is simple in structure and easy to design. [Solution] A joint structure 1 between a wooden member and a steel member, in which a wooden beam 20 (wooden member) is joined via a steel connector 30 fixed to a steel pipe column 10 (steel member), the steel connector 30 has a first portion 301 whose base end is fixed to the steel pipe column 10, and a second portion 302 which is joined to the wooden beam 20 over a predetermined length from its tip, and the yield strength of at least the first portion 301 is formed lower than that of the steel pipe column 10 and the wooden beam 20 [Selected Figure] Figure 1

Description

The present invention relates to a joining structure between a wooden member and a steel member and a steel joining tool.

Conventionally, in large-scale spatial structures such as sports halls and event halls, a lattice shell structure in which beam members are connected in a triangular lattice shape or a square lattice pattern is adopted as a roof frame. In recent lattice shell structures, wooden members are adopted as beam members in consideration of the aesthetics and lightness of the wooden members.
When a wooden member is used as a beam member, the rigidity and proof stress of the joint portion are insufficient as compared with the case where a conventional steel member is used, and the lattice shell structure is liable to buckle or deform.
Therefore, a structure has been proposed in which a steel metal fitting having a flange formed at at least one of the upper and lower ends of the web portion is used for the joint portion between the wooden member and the steel joint to improve the rigidity and proof stress of the joint portion. (See Patent Document 1).

In Patent Document 1, a T-shaped or H-shaped steel material is used as a steel member having a web portion and a flange portion, and a wooden member is placed along the web portion and the flange portion of the steel member together with the web portion and the flange portion. Lag screws and fastening bolts that penetrate wooden members are used.
As the joining structure between the wooden member and the steel member, various structures other than those described in Patent Document 1 are used. For example, there is a structure in which a concave groove portion is provided in the center of an end portion of a wooden member, and a plate portion of a T-shaped metal fitting is sandwiched therein and fixed with bolts (see Patent Document 2).

On the other hand, in the large-scale spatial structure as described above, a seismic isolation / damping structure for reducing the force and shaking applied to the structure in the event of an earthquake is attracting attention. For example, in a structure in which a K-type or V-type brace frame is installed in a frame of a steel column beam, an oil damper is installed integrally with the brace frame to ensure vibration control performance (see Patent Document 3).
In the structure of Patent Document 1, the joint portion of wood is formed by forming a dog bone shape in which the width of the flange portion is reduced in the vicinity of the steel pillar portion and separating the joint portion between the steel metal fitting and the wooden member from the dog bone. The steel metal fittings at the joint are made to be plasticized before fracture, and sufficient toughness is imparted to the steel metal fittings.

Japanese Unexamined Patent Publication No. 2019-35255 Japanese Unexamined Patent Publication No. 8-60742 Japanese Unexamined Patent Publication No. 11-172959

The above-mentioned joint structure of Patent Document 1 has a problem that a reliable design cannot be performed due to the joint strength between the steel member and the wooden member and the variation in the characteristics of the wooden member. Further, in the structure of FIG. 7 of Patent Document 1, the boundary between the steel member and the wooden member is not clear, and it is necessary to consider the stress concentration due to the end portion of the wooden member, which causes a problem that the design is complicated. rice field.
Further, when trying to improve the energy absorption performance of an earthquake or the like, there is a problem that the structure is complicated and the cost increases, such as installing an energy absorption damper as described in Patent Document 3 separately.

An object of the present invention is to provide a joint structure between a wooden member and a steel member and a steel joint, which have high energy absorption performance and a simple structure and are easy to design.

The present invention has a joining structure between a wooden member and a steel member to which the wooden member is joined via a steel joining tool fixed to the steel member, and the steel joining tool has a base end portion thereof. It has a first portion fixed to the steel member and a second portion joined to the wooden member over a predetermined length from the tip portion, and the yield strength of the first portion is the steel member and the wooden member. It is formed lower than the member, and is characterized in that seismic energy applied to the steel member and the wooden member is absorbed in the first portion.
In the present invention as described above, the yield strength of the first portion in which the base end portion is fixed to the steel member is made lower than that of the wooden member and the steel member, so that the strength of the first portion of the steel joint is lowered. As a portion, it can be plasticized prior to the wooden and steel members. As a result, the seismic energy applied to the joint structure is exclusively plastically deformed in the first portion and absorbed by the first portion, and the destruction of the second portion and the wooden member or the steel member can be suppressed.
In the present invention, the first portion is formed as a part of a steel joint, and the steel joint is easy to design as a member interposed between the wooden member and the steel member, and is made of steel. Therefore, sufficient toughness can be obtained even during plastic deformation, and there is no variation in yield strength, and design is easy in these respects as well. Further, by making the structure capable of ensuring sufficient energy absorption performance in the first portion of the steel joint, it is possible to eliminate the need to provide a separate energy absorption damper or the like.
Thereby, it is possible to provide a joint structure of a wooden member and a steel member having high energy absorption performance, a simple structure and an easy design.

In the joint structure of the wooden member and the steel member of the present invention, it is preferable that at least the first portion is formed of a low yield point material.
In the present invention, as the low yield point material, for example, a low yield point steel material LY225 for building structures can be used.
In the present invention as described above, since the first portion is formed of the low yield point material, the yield strength of the first portion can be easily set low.

In the joint structure of the wooden member and the steel member of the present invention, the second portion is fixed along the surface of the wooden member with the second web portion inserted into the slit formed in the wooden member. A first web portion having at least one of the upper and lower second flange portions, the first portion being connected to the second web portion, and a first flange portion connected to the second flange portion. , It is preferable to have.
In the present invention as described above, the first portion and the second portion each have a web portion and a flange portion that are continuous with each other, and the web portion and the flange portion of the second portion are connected to the slit and the surface of the wooden member. It is possible to transmit the load reliably.

In the joint structure of the wooden member and the steel member of the present invention, the second portion is fixed along the surface of the wooden member with the second web portion inserted into the slit formed in the wooden member. It has at least one of the upper and lower second flange portions, and the first portion is displaced in the thickness direction with respect to the first web portion extending on the extension of the second web portion and the second flange portion. It may have a first flange portion that is arranged and extends in a direction parallel to the second flange portion.
In the present invention as described above, by shifting the first flange portion and the second flange portion in the thickness direction (height direction), the height of the first web can be made smaller than that of the second web, and the yield of the first portion can be made. The strength can be easily set low.

In the joining structure of the wooden member and the steel member of the present invention, the second web portion and the second flange portion are joined to one surface, and the first web portion and the first flange portion are joined to the opposite surface. It is preferable to have an end plate.
In the present invention as described above, the first web and the second web, and the first flange and the second flange are joined via the end plate, respectively, and the first flange is largely displaced in the thickness direction of the second flange. Even if it deviates from the extension line of the second flange, the connection between the first flange and the second flange can be maintained via the end plate, and the load transmission can be ensured.

In the joint structure of the wooden member and the steel member of the present invention, the thickness of the first flange portion is formed to be thinner than the second flange portion, or the thickness of the first web portion is smaller than that of the second web portion. It is also preferable that the thickness of the first flange portion is formed thinner than that of the second flange portion and the thickness of the first web portion is formed thinner than that of the second web portion.
In the present invention as described above, since each portion of the first portion is formed thinner than each portion of the second portion, the yield strength of the first portion can be easily set low.

In the joint structure of the wooden member and the steel member of the present invention, the width of the first flange portion is formed to be narrower than that of the second flange portion, or the width of the first web portion is smaller than that of the second web portion. It is also preferable that the width of the first flange portion is formed narrower than that of the second flange portion and the width of the first web portion is formed narrower than that of the second web portion.
In the present invention as described above, since each portion of the first portion is formed narrower than each portion of the second portion, the yield strength of the first portion can be easily set low.

In the joint structure of the wooden member and the steel member of the present invention, it is preferable that the first web portion has a concave or hole-shaped strength relaxing portion.
In the present invention, as the concave strength relaxing portion, a concave portion formed on the surface of the first web portion by stamping, cutting, polishing or the like can be used. As the hole-shaped strength relaxing portion, a portion having an opening penetrating the front and back is formed in the middle of the first web portion. The number and arrangement of these strength relaxation portions in the first web portion can be appropriately selected. The concave strength relaxing portion may be formed on one side or both sides of the first web portion.
In the present invention as described above, the yield strength of the first portion can be easily set low by forming the concave or hole-shaped strength relaxing portion in the first web portion. Since the strength relaxation portion is formed in the middle portion of the first web portion and does not change the outer peripheral shape of the first web portion, the effect on the rigidity and proof stress of the steel joint while setting the yield strength of the first portion low. Can be made smaller.

In the joint structure of the wooden member and the steel member of the present invention, it is preferable that the first flange portion has a notch on the side edge.
In the present invention as described above, by forming a notch on the side edge of the first flange portion, a narrow portion is formed in the middle of the first flange portion, and the yield strength of the first portion is set low. Can be easily done. The narrow portion of the first flange portion corresponds to the conventional dogbone shape, but the yield strength of the first portion is set low by the other configuration of the present invention described above, and the rigidity and proof stress of the steel joint are set. The influence of the narrow part on the surface can be reduced.

In the joint structure of the wooden member and the steel member of the present invention, the second flange portion is fixed along the upper surface of the wooden member and the second upper flange portion fixed along the lower surface of the wooden member. A spacer is provided in at least one of the gap between the upper surface of the wooden member and the second upper flange portion and the gap between the lower surface of the wooden member and the second lower flange portion, including the second lower flange portion. It is preferable that it is intervened.
In the present invention as described above, even if a gap is generated between the upper surface of the wooden member and the second upper flange portion and between the lower surface of the wooden member and the second lower flange portion, this can be filled with the spacer. , The rattling between the second part and the wood member can be surely eliminated.

That is, in the joint structure of the present invention, when the second portion has upper and lower flange portions (when there are a second upper flange portion and a second lower flange portion), a wood member is introduced between the upper and lower portions. .. At this time, due to the nature of the wood member, the finishing accuracy unlike that of a metal material cannot be obtained, and the wood member is liable to be distorted due to temperature and humidity. Therefore, in order to smoothly introduce the wood member between the upper and lower flange portions, it is necessary to form the vertical dimension of the wood member smaller than the space dimension of the upper and lower flange portions. As a result, it is inevitable that a gap will be generated between the upper and lower flanges and the introduced wood member. On the other hand, by interposing a spacer between the upper and lower flange portions and the introduced wood member, the generated gap can be reliably filled.

In the joint structure of the wooden member and the steel member of the present invention, it is preferable that the spacer is a wedge-shaped member that is press-fitted into the gap.
In the present invention, a wooden member or a metal member can be used as the wedge-shaped spacer, and a hammer can be used for press-fitting. A plurality of spacers may be arranged with respect to the gap.
In the present invention as described above, since the wedge-shaped spacer is press-fitted into the gap between the second upper flange portion or the second lower flange portion and the wood member, the gap can be reliably eliminated. Further, since the spacer is press-fitted, even if there is a gap between the second upper flange portion and the wood member and between the second lower flange portion and the wood member, the spacer can be press-fitted into either one of them. Both gaps can be eliminated.

In the joint structure of the wooden member and the steel member of the present invention, it is preferable that the spacer is a filler that is filled in the gap and cured.
In the present invention, as the filler that is filled in the gap and cured, a material having high strength at the time of curing such as a two-component mixed curing type epoxy resin, a photocurable resin or a thermosetting resin, and having a good meat quality is used. preferable.
In the present invention as described above, since the filler is filled in the gap between the second upper flange portion or the second lower flange portion and the wood member, the gap can be reliably eliminated. Further, since the filler is only filled in the gap, the work is quiet and can be performed relatively easily.

In the joint structure of the wooden member and the steel member of the present invention, the second flange portion is fixed along the upper surface of the wooden member and the second upper flange portion fixed along the lower surface of the wooden member. The upper surface of the wooden member and the second upper flange portion are joined by a plurality of wood screws or adhesives, and the lower surface of the wooden member and the second lower flange portion are plurality of. It is joined with a wood screw or an adhesive, and the joining structure between the upper surface of the wooden member and the second upper flange portion and the joining structure between the lower surface of the wooden member and the second lower flange portion are formed vertically symmetrically. It is preferable that it is.
In the present invention as described above, the wooden member and the second portion can be reliably joined to each other, and the joint structure is formed vertically symmetrically, so that the rigidity and proof stress of the joint can be ensured and the plasticity of the joint can be obtained. The effect of plasticity can be enhanced.
Furthermore, since the joint structure from the steel member to the wooden member is vertically symmetrical, the characteristics depending on the bending direction are the same up and down, and it is possible to eliminate the need to consider asymmetry when evaluating the rigidity and proof stress at the design stage. Easy to design.

In the joining structure of the wooden member and the steel member of the present invention, the wooden member and the second web portion are joined by one or more drift pins penetrating the second web portion and the wooden members on both sides thereof. The wooden member, the second web portion, and the plurality of drift pins are preferably formed vertically symmetrically.
In the present invention as described above, the wooden member and the second portion can be reliably joined, and the joint structure is formed vertically symmetrically, so that the joint portion is plasticized while ensuring the rigidity and proof stress of the joint portion. The effect of can be enhanced.
Furthermore, since the joint structure from the steel member to the wooden member is vertically symmetrical, the characteristics depending on the bending direction are the same up and down, and it is possible to eliminate the need to consider asymmetry when evaluating the rigidity and proof stress at the design stage. Easy to design.

In the joint structure of the wooden member and the steel member of the present invention, it is preferable that the first portion is formed vertically symmetrically with respect to the same plane of symmetry as the second portion.
In the present invention as described above, the wooden member and the second portion can be reliably joined, and the joint structure is formed vertically symmetrically, so that the joint portion is plasticized while ensuring the rigidity and proof stress of the joint portion. The effect of can be enhanced.
Furthermore, since the joint structure from the steel member to the wooden member is vertically symmetrical, the characteristics depending on the bending direction are the same up and down, and it is possible to eliminate the need to consider asymmetry when evaluating the rigidity and proof stress at the design stage. Easy to design.

In the joining structure of the wooden member and the steel member of the present invention, in the steel joining tool, the first portion and the second portion are the first steel material and the second steel material using H-shaped steel or T-shaped steel, respectively. It is preferably made of steel.
In the present invention as described above, the first steel material according to the conditions required for the first portion (material, thickness, shape, etc. described above) and the second steel material according to the conditions required for the second portion (same as above). By preparing and welding these, a steel joint having the desired first portion and second portion can be easily manufactured. As long as these first steel materials and second steel materials meet the conditions as the first part and the second part, respectively, standard products of commercially available mold steel materials can be used, and procurement is easy and cost reduction can be achieved.

In the joint structure between the wooden member and the steel member of the present invention, the steel member is a steel pipe column, the wooden member is a wooden beam, and the floor member supported by the wooden beam is the steel pipe column. It is preferable that an interval is formed between them.
In the present invention as described above, when a load is applied to the floor member, the applied load is exclusively borne by the wooden beam, and direct transmission from the floor member to the steel pipe column can be prevented. As a result, the load is reliably transmitted to the first portion where the yield strength is set low, and the steel joint can be plasticized prior to the wooden member.

The present invention is a steel joining tool used for a joining structure between a wooden member and a steel member, wherein the base end portion is fixed to the steel member and the tip portion extends over a predetermined length. It has a second portion joined to the wooden member, and is characterized in that at least the yield strength of the first portion is formed to be lower than that of the steel member and the wooden member.
According to such a steel joining tool of the present invention, the effects as described in the above-mentioned joining structure of the present invention can be obtained.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a bonding structure between a wooden member and a steel member and a steel joining tool, which have high energy absorption performance, a simple structure and an easy design.

The side view which shows the junction structure of 1st Embodiment of this invention. The plan view which shows the joining structure of the 1st Embodiment. The cross-sectional view which shows the joining structure of the 1st Embodiment. The perspective view which shows the steel joint of the 1st Embodiment. The side view which shows the joining structure of the 2nd Embodiment of this invention. The cross-sectional view which shows the joining structure of the 2nd Embodiment. The side view which shows the joining structure of the 3rd Embodiment of this invention. The cross-sectional view which shows the joining structure of the 3rd Embodiment. The side view which shows the joining structure of 4th Embodiment of this invention. The side view which shows the junction structure of 5th Embodiment of this invention. The side view which shows the joining structure of 6th Embodiment of this invention. The plan view which shows the joining structure of the 6th Embodiment. The graph which shows the history characteristic of the steel joint of the 6th Embodiment. The side view which shows the joining structure of 7th Embodiment of this invention. The plan view which shows the joining structure of the 7th Embodiment. The side view which shows the joining structure of 8th Embodiment of this invention. The side view which shows the joining structure of the 9th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
Each of FIGS. 1 to 4 shows a first embodiment of the present invention.
The joining structure 1 joins a steel pipe column 10 which is a steel member and a wooden beam 20 which is a wooden member. These steel pipe columns 10 and wooden beams 20 are joined via a steel joining tool 30 fixed to the steel pipe columns 10.

As shown in FIG. 1, the steel pipe column 10 has an upper column 11 and a lower column 12 joined vertically, and a beam-column joint portion 13 is arranged between them. The upper column 11, the lower column 12, and the beam-column joint 13 are each formed of a steel pipe having a rectangular cross section. A diaphragm 14 is installed between the upper column 11 and the beam-column joint portion 13, and a diaphragm 15 is installed between the lower column 12 and the beam-column joint portion 13. The diaphragms 14 and 15 are steel plates, and the ends of the upper column 11, the lower column 12, and the beam-beam joint 13 are welded all around the surface of each of the diaphragms 14 and 15.

As shown in FIGS. 2 and 3, the wooden beam 20 is formed by arranging a pair of laminated lumbers 21 in parallel, sandwiching a rectangular plate-shaped spacer 22 between them, and using a bolt 23 passing through the central hole of the spacer 22. It is formed integrally by fastening.

In FIGS. 1 and 2, a slit 24 having a thickness corresponding to the thickness of the spacer 22 is formed between the pair of laminated lumbers 21.
When joining the wooden beam 20 and the steel joiner 30, the second web portion 321 of the steel joiner 30, which will be described later, is inserted into the slit 24 and fastened together with the pair of laminated materials 21 with bolts 23. It is possible.

In FIGS. 1 and 3, a flat recess 25 is formed on the lower surface 203 of the wooden beam 20 over a section having a predetermined length. The recess 25 can be formed by cutting the lower surface 203 of the wooden beam 20 by a predetermined thickness.
Due to the recess 25, the height dimension from the upper surface 202 to the recess 25 is smaller than the height dimension from the upper surface 202 to the lower surface 203 (the height dimension of the original laminated lumber 21).

As shown in FIGS. 1 and 2, the steel joint 30 is a first portion 301 whose base end portion is fixed to a steel pipe column 10 which is a steel member, and a wooden member over a predetermined length from the tip end portion. It has a second portion 302 joined to the wooden beam 20.

As shown in FIG. 4, the steel joint 30 is formed by welding a first steel material 31 using a relatively short H-shaped steel and a second steel material 32 using a relatively long H-shaped steel. .. Then, the first steel member 31 forms the first portion 301 of the steel joiner 30, and the second steel member 32 forms the second portion 302 of the steel joiner 30.

The first steel material 31 has a first web portion 311 and has a first upper flange portion 312 and a first lower flange portion 313 above and below the first web portion 311.
The edge of the first web portion 311 on the steel pipe column 10 side is welded to the column-beam joint portion 13. The edge of the first upper flange portion 312 on the steel pipe column 10 side is welded to the diaphragm 14. The end edge of the first lower flange portion 313 on the steel pipe column 10 side is welded to the diaphragm 14.

The first steel material 31 has a shape in which the edge of the first web portion 311 protrudes from the edge of the first upper flange portion 312 and the first lower flange portion 313. The protruding length is adjusted to the dimension in which the outer circumferences of the diaphragms 14 and 15 project outward from the beam-column joint 13.
As a result, when the first steel material 31 is fixed to the steel pipe column 10, the first web portion 311 and the column-beam joint portion 13 are in close contact with each other, and the first upper flange portion 312, the first lower flange portion 313, and the diaphragm 14 are brought into close contact with each other. , 15 are in close contact, and each welding can be performed properly.
The first steel material 31 is formed symmetrically with respect to a vertical axis, and both ends of the steel pipe column 10 side and the second steel material 32 side have a shape in which the first web portion 311 protrudes.

The second steel material 32 has a second web portion 321 and has a second upper flange portion 322 and a second lower flange portion 323 above and below the second web portion 321.
The edge of the second web portion 321 on the side of the first steel material 31 is welded to the edge of the first web portion 311. The second upper flange portion 322 is welded to the edge of the first steel material 31 side to the edge of the first upper flange portion 312. The second lower flange portion 323 is welded to the edge of the first steel material 31 side to the edge of the first lower flange portion 313.

The second steel material 32 has a shape in which the edge of the second upper flange portion 322 and the second lower flange portion 323 on the first steel material 31 side protrudes from the edge of the second web portion 321 on the first steel material 31 side. Has been done. This protrusion length is such that the edge of the first web portion 311 of the first steel material 31 protrudes from the edge of the first upper flange portion 312 and the first lower flange portion 313 (the outer circumferences of the diaphragms 14 and 15 are the outer circumferences of the diaphragms 14 and 15). It corresponds to the dimension that protrudes outward from the column-beam joint portion 13).
As a result, when the first steel material 31 and the second steel material 32 are welded, the second web portion 321 and the first web portion 311 are in close contact with each other, and the second upper flange portion 322 and the first upper flange portion 312, The second lower flange portion 323 and the first lower flange portion 313 are in close contact with each other, and each welding can be appropriately performed.

The second steel material 32 has a plurality of screw holes 324 in the second upper flange portion 322 and the second lower flange portion 323.
Two sets of three screw holes 324 are arranged on both sides of the second web portion 321, and a total of 12 screw holes 324 are formed in each of the second upper flange portion 322 and the second lower flange portion 323.
A wood screw 325 is inserted into each of the screw holes 324 and can be screwed into the upper surface 202 of the wooden beam 20 when it is joined to the wooden beam 20 (see FIGS. 1 and 3).

When joining the wooden beam 20 and the second steel material 32, that is, the steel joining tool 30, the second web portion 321 is inserted into the slit 24, and the pair of laminated materials 21 of the wooden beam 20 is inserted into the second web portion 321. The wooden beam 20 and the second steel material 32 are integrated by arranging them on both sides and fastening them with bolts 23.
In the second steel material 32, the distance between the lower surface of the second upper flange portion 322 and the upper surface of the second lower flange portion 323 is formed to be larger than the height dimension from the upper surface 202 to the recess 25 in the wooden beam 20, and a pair of laminated layers. The work of arranging the material 21 on both sides of the second web portion 321 can be smoothly performed.

By tightening the wood screw 325 described above, the upper surface 202 of the wooden beam 20 is brought into close contact with the lower surface of the second upper flange portion 322, and the laminated material 21 is lifted so that the upper surface of the second lower flange portion 323 and the recess 25 There is a gap between the surface and the surface.
A wedge-shaped member 326 is press-fitted into this gap from the side, and the second lower flange portion 323 and the recess 25 or the wooden beam 20 are pressed against each other by the wedge-shaped member 326.
In this way, the wooden beam 20 and the steel joint 30 sandwich the second web portion 321 with the pair of laminated materials 21, fasten the upper surface 202 to the second upper flange portion 322 with the wood screw 325, and further, the recess 25. Is pressed against the second lower flange portion 323 with the wedge-shaped member 326, so that reliable joining and load transmission are possible.

In the present embodiment, the steel joint 30 is formed so that the yield strength of at least the first portion 301 is lower than that of the steel pipe column 10 and the wooden beam 20.
First, the first steel material 31, which is the first portion 301, is formed of a low yield point material, and is formed to have a lower yield strength than the steel pipe column 10 and the wooden beam 20 at the material stage. As the low yield point material, for example, a low yield point steel material LY225 for building structures can be used.

Second, the first steel material 31, which is the first portion 301, is formed to have a lower yield strength than the second steel material 32, which is the second portion 302, and is formed as a steel joint 30 as compared to the steel pipe column 10 and the wooden beam 20. The yield strength is low, and the first steel material 31 is formed to have a lower yield strength among the steel joining tools 30, and the first steel material 31 (first portion 301) is most likely to yield in the series of joining structures 1. It is said to be a part.
Then, in order to form the yield strength of the first steel material 31 to be low, the following means are used in combination in the present embodiment.

In the steel joint 30, the thickness of the first upper flange portion 312 is thinner than that of the second upper flange portion 322, and the thickness of the first lower flange portion 313 is formed to be thinner than that of the second lower flange portion 323. The yield strength of 31 is formed to be lower than that of the second steel material 32.
The lower surfaces of the first upper flange portion 312 and the second upper flange portion 322 are flat and continuous at the time of joining, and the first lower flange portion 313 and the second lower flange portion 323 are the upper surfaces of the respective upper surfaces at the time of joining. Is a flat and continuous shape.

In the first steel material 31, the first web portion 311 is formed with two openings 314 as strength relaxing portions. The opening 314 is a rectangular hole with rounded corners penetrating the front and back of the first web portion 311 and is formed one near the first upper flange portion 312 and one near the first lower flange portion 313. There is. In this respect as well, the yield strength of the first steel material 31 is lower than that of the second steel material 32.
In order to secure the desired rigidity, the first web portion 311 is left around the opening 314 with a predetermined width along the outer circumference of the first web portion 311.

In the first steel material 31, C-shaped notches 315 are formed on both side edges of the first upper flange portion 312 and the first lower flange portion 313, respectively, whereby the first upper flange portion 312 and the first lower flange portion 312 and the first lower flange portion 315 are formed. The planar shape of the flange portion 313 is formed into a dogbone shape having a narrow intermediate portion. In this respect as well, the yield strength of the first steel material 31 is lower than that of the second steel material 32.

In such an embodiment, the joint structure 1 is assembled by the following procedure.
Prior to assembly, the upper column 11 to the lower column 12 are joined to form a steel pipe column 10, and the first steel material 31 of the steel joining tool 30 is fixed to this. Further, the pair of laminated lumber 21 and the spacer 22 are fastened with bolts 23 to temporarily assemble the wooden beam 20.
A steel pipe column 10 is erected at a construction site, the end face 201 side of the wooden beam 20 is brought close to the second steel material 32 of the steel joint 30, and the second web portion 321 is inserted into the slit 24. When the end of the second web portion 321 reaches the innermost part of the recess 25, the wood screw 325 is screwed in, the wooden beam 20 is pulled up, and the upper surface 202 and the second upper flange portion 322 are brought into close contact with each other. Further, the wedge-shaped member 326 is sequentially driven from both sides of the gap of the recess 25 and press-fitted between the second lower flange portion 323 and the wooden beam 20. As a result, the steel pipe column 10 and the wooden beam 20 are joined via the steel joining tool 30 fixed to the steel pipe column 10.

According to the present embodiment as described above, the following effects can be obtained.
In the present embodiment, in the joining structure 1 in which the wooden beam 20 (wooden member) is joined via the steel joining tool 30 fixed to the steel pipe column 10 (steel member), the base end portion is fixed to the steel pipe column 10. By lowering the yield strength of the first portion 301 (first steel material 31) to be formed, the first portion 301 of the steel joint 30 is plasticized prior to the wooden beam 20 and the steel pipe column 10 as a strength reducing portion. Can be done. As a result, the seismic energy applied to the joint structure 1 is exclusively plastically deformed by the first portion 301 (first steel material 31) and absorbed by the first portion 301 (first steel material 31), and is absorbed by the second portion 302 (second steel material). 32) and the destruction of the wooden beam 20 (wooden member) or the steel pipe column 10 (steel member) can be suppressed.

In the present embodiment, the first portion 301 (first steel material 31) is formed as a part of the steel joining tool 30, and the steel joining tool 30 is a wooden beam 20 (wooden member) and a steel pipe column 10 (steel member). In addition to being easy to design as a member that intervenes between the two, sufficient toughness can be obtained even during plastic deformation because it is made of steel, and there is no variation in yield strength, etc., and design is also easy in these respects. .. Further, since sufficient energy absorption performance can be ensured in the first portion 301 of the steel joining tool 30, it is not necessary to provide a separate energy absorption damper or the like.
Thereby, it is possible to provide a joint structure 1 of a wooden member and a steel member having high energy absorption performance, a simple structure and an easy design.

In the present embodiment, the first portion 301 (first steel material 31) and the second portion 302 (second steel material 32) are continuous web portions (first web portion 311 and second web portion 321), respectively, and each other. It has continuous flange portions (first upper flange portion 312 and second upper flange portion 322, first lower flange portion 313 and second lower flange portion 323), of which the second web portion 321 of the second portion 302 has. The second upper flange portion 322 is sandwiched between the slits 24 of the wooden beam 20 and fastened to the upper surface 202 of the wooden beam 20 with a wood screw 325, and the second lower flange portion 323 is pressed against the lower surface 203 of the wooden beam 20 by the wedge-shaped member 326. This enables reliable load transmission.

In the present embodiment, since the first portion 301 (first steel material 31) is formed of a low yield point material, the yield strength of the first portion 301 can be easily set low.
In the present embodiment, each part of the first part 301 (first upper flange part 312 and first lower flange part 313) is formed thinner than each part of the second part (second upper flange part 322 and second lower flange part 323). By doing so, the yield strength of the first portion 301 becomes lower than that of the second portion 302, and the yield strength of the first portion 301 can be easily set low.

In the present embodiment, since the two openings 314 are formed in the first web portion 311 as the strength relaxing portion, the yield strength of the first portion 301 can be easily set low. The opening 314, which is a strength relaxation portion, is formed in the middle portion of the first web portion 311 and does not change the outer peripheral shape of the first web portion 311. Therefore, the rigidity of the steel joint 30 is set while the yield strength is set low. And the effect on strength can be reduced.

In the present embodiment, notches 315 are provided on both sides of the side edges of the first upper flange portion 312 and the first lower flange portion 313 to form narrow portions, so that the yield strength of the first portion 301 is lowered. It can be easily set. The narrow portion formed by the notch 315 in the first upper flange portion 312 and the first lower flange portion 313 corresponds to the conventional dogbone shape, but has another configuration (low yield point) of the present embodiment described above. The yield strength of the first portion 301 is also reduced by the material and the opening portion 314) which is a strength relaxation portion, and the influence of the narrow portion on the rigidity and proof stress of the steel joint 30 can be reduced.

In the present embodiment, since the wedge-shaped member 326 as a spacer is press-fitted into the gap between the recess 25 of the lower surface 203 of the wooden beam 20 and the second lower flange portion 323, the space between the second portion 302 and the wooden beam 20 is formed. You can surely eliminate the rattling.
In particular, since the wedge-shaped member 326 is used as a spacer and is driven from the side, the gap can be reliably eliminated. Further, even if there is a gap between the second upper flange portion 322 and the wooden beam 20 and between the second lower flange portion 323 and the wooden beam 20, both are formed by the wedge-shaped member 326 press-fitted into the lower gap. The gap can be eliminated.

In the present embodiment, in the steel joint 30, the first portion 301 and the second portion 302 are formed of the first steel material 31 and the second steel material 32 using H-shaped steel, respectively. Therefore, the first steel material 31 according to the conditions required for the first portion 301 (material, thickness, shape, etc. described above) and the second steel material 32 according to the conditions required for the second portion 302 (same as above). By preparing and welding these, the steel joint 30 having the desired first portion 301 and second portion 302 can be easily manufactured. As long as the first steel material 31 and the second steel material 32 meet the conditions as the first part 301 and the second part 302, respectively, standard products of commercially available mold steel materials can be used, and procurement is easy and costly. It can also be reduced.

[Second Embodiment]
5 and 6 show a second embodiment of the present invention.
The joint structure 2 has the same basic structure as the joint structure 1 of the first embodiment described above. Therefore, the same reference numerals are used for the common parts, duplicate explanations are omitted, and different parts will be described below.

In the first embodiment described above, a flat recess 25 is formed from the end surface 201 on the lower surface 203 of the wooden beam 20, and a wedge shape as a spacer is formed between the recess 25 and the second lower flange portion 323 of the second steel material 32. The member 326 was press-fitted.
On the other hand, in the present embodiment, the recess 25 is formed slightly thin, and the filler 327 is filled as a spacer between the recess 25 and the second lower flange portion 323 of the second steel material 32.
As the filler 327, a material having high strength at the time of curing and having good meat, such as a two-component mixed curing type epoxy resin, a photocurable resin or a thermosetting resin, is used.
In the installation of the filler 327, the wooden beam 20 is introduced into the steel joining tool 30, the upper surface 202 is brought into close contact with the second upper flange portion 322 by the wood screw 325, and the upper surface 202 is brought into close contact with the second lower flange portion 323 of the second steel material 32. With the gap maximized, the gap is filled with the uncured filler 327 and cured.

According to this embodiment, the effects described in the above-described first embodiment can be obtained. Further, by filling the gap with the filler 327, it is possible to surely eliminate the rattling between the second portion 302 and the wooden beam 20.
At this time, since the filler 327 is used instead of the wedge-shaped member 326 of the first embodiment, it is only necessary to fill the gap with the filler 327, and there is no work such as tapping the wedge-shaped member 326. The work is quiet and easy to do.

[Third Embodiment]
7 and 8 show a third embodiment of the present invention.
The joint structure 3 has the same basic structure as the joint structure 1 of the first embodiment described above. Therefore, the same reference numerals are used for the common parts, duplicate explanations are omitted, and different parts will be described below.

In the above-mentioned first embodiment, the wedge-shaped member 326 as a spacer is press-fitted between the recess 25 and the second lower flange portion 323 of the second steel material 32, whereas in the present embodiment, the above-mentioned first embodiment is used. Similar to the second embodiment, the recess 25 is formed slightly thinly, and the filler 327 as a spacer is filled between the recess 25 and the second lower flange portion 323.

In the first embodiment described above, the second upper flange portion 322 and the wooden beam 20 are fastened with a wood screw 325.
On the other hand, in the present embodiment, the second upper flange portion 322 and the wooden beam 20 are fastened with a wood screw 325, and a filler 327 as a spacer is filled between the concave portion 25 and the second lower flange portion 323. After the filler 327 is solidified, the second lower flange portion 323 and the wooden beam 20 are fastened with another wood screw 325.

According to this embodiment, the effects described in the first embodiment and the second embodiment described above can be obtained, and the second lower flange portion 323 and the wooden beam 20 are also fastened with a wood screw 325 to obtain steel. The connection rigidity between the metal joint 30 and the wooden beam 20 can be further increased.

[Modification of the first to third embodiments]
In each of the first to third embodiments, the yield strength of the first portion 301 is set low by forming the first steel material 31 with a low yield point material. On the other hand, in each of the above-described embodiments, the thickness of the flange portion (the thickness of the first upper flange portion 312 and the first lower flange portion 313 is formed thinner than the second upper flange portion 322 and the second lower flange portion 323. ), An opening 314 formed in the first web portion 311 as a strength relaxation portion, a notch portion 315 forming a narrow portion in the first upper flange portion 312 and the first lower flange portion 313, and the like. The yield strength of the first portion 301 can be set low, and it is not essential for the present invention to form the first steel material 31 with a low yield point material.

In each of the above embodiments, the first upper flange portion 312 and the first lower flange portion 313 are formed to be thinner than the second upper flange portion 322 and the second lower flange portion 323, whereby the yield strength of the first portion 301 is increased. Was set low. On the other hand, the yield strength of the first portion 301 may be lowered by forming the thickness of the first web portion 311 thinner than that of the second web portion 321, or each portion of the first portion 301 (first). The web portion 311 and the first upper flange portion 312 and the first lower flange portion 313) are formed thinner than each portion of the second portion 302 (second web portion 321 and second upper flange portion 322 and second lower flange portion 323). You may.

In each of the above embodiments, two openings 314 penetrating the front and back of the first web portion 311 are formed as the strength relaxing portion of the first web portion 311. On the other hand, the number of openings 314 may be one or three or more, and the shape thereof is not limited to a rectangle with rounded corners, such as a polygonal shape, a circular shape, an elliptical shape, or any other shape. Can be used.

In FIG. 9, as a fourth embodiment of the present invention, the joint structure 4 has the same structure as the joint structure 1 of the first embodiment described above, and has front and back surfaces in the center of the first web portion 311 as a strength relaxation portion. A circular opening 316 that penetrates is formed.
In FIG. 10, as a fifth embodiment of the present invention, the joint structure 5 has the same structure as the joint structure 1 of the first embodiment described above, and is biased toward the upper part of the first web portion 311 as a strength relaxation portion. A circular opening 316 that penetrates the front and back is formed at the position.
The joining structures 4 and 5 having these openings 316 can also obtain the same effect as the joining structure 1 of the first embodiment described above.

Further, as the strength relaxing portion of the first web portion 311, instead of the openings 314 and 316 penetrating the front and back, a recessed portion is formed on one or both sides of the surface of the first web portion 311 by stamping, cutting, polishing or the like. The strength of the first web portion 311 may be relaxed by forming and thinning the surface.

In each of the above-described embodiments, notches 315 are formed on both side edges of the first upper flange portion 312 and the first lower flange portion 313, respectively, and in the intermediate portion between the first upper flange portion 312 and the first lower flange portion 313. Each narrow portion was formed. On the other hand, the notch portion 315 may be only one of the first upper flange portion 312 and the first lower flange portion 313, or all the notch portions 315 may be omitted.

In each of the above embodiments, a wedge-shaped member 326 or a filler 327, which is a spacer, is installed in the gap between the first lower flange portion 313 and the recess 25 formed in the lower surface 203 of the wooden beam 20 to eliminate the gap. On the other hand, the recess 25 may be omitted, and a spacer may be installed between the first lower flange portion 313 and the lower surface 203 of the wooden beam 20.
Further, the spacer may be installed not only on the lower surface side of the wooden beam 20 but also between the first upper flange portion 312 and the upper surface 202 of the wooden beam 20. In this case, the wood screw 325 may be installed so as to fasten the first lower flange portion 313 and the lower surface 203 of the wooden beam 20.
Further, if sufficient joining rigidity is obtained for fixing the wooden beam 20 and the steel joining tool 30, such as fixing the first upper flange portion 312 and the wooden beam 20 with the wood screw 325, the spacer may be omitted. good.

[Sixth Embodiment]
11 and 12 show a sixth embodiment of the present invention.
The joining structure 6 has the same basic structure as the joining structure 1 of the first embodiment described above. Therefore, the same reference numerals are used for the common parts, duplicate explanations are omitted, and different parts will be described below.

In the joint structure 1 of the first embodiment described above, the height dimension of the first steel material 31 is substantially the same as the height dimension of the second steel material 32. That is, the width (height dimension) of the first web portion 311 is the same as that of the second web portion 321, the first upper flange portion 312 and the second upper flange portion 322, and the first lower flange portion 313 and the second lower. The flange portions 323 and the flange portions 323 were connected to each other at the same height.
On the other hand, in the present embodiment, the height of the first steel material 31 is formed lower than that of the second steel material 32. That is, the width (height dimension) of the first web portion 311 is formed to be smaller than that of the second web portion 321, and the first upper flange portion 312 is arranged at a position lower than that of the second upper flange portion 322. 1 The lower flange portion 313 is arranged at a position higher than that of the second lower flange portion 323.

In the present embodiment, the end plate 33 is installed at the end of the second steel material 32.
The end plate 33 is arranged along the end surface 201 of the wooden beam 20, the upper edge is welded to the lower surface of the second upper flange portion 322, the lower edge is welded to the upper surface of the second lower flange portion 323, and one side thereof. The edge of the second web portion 321 is welded to the second web portion 321.
The first steel material 31 has the end edges of the first web portion 311, the first upper flange portion 312, and the first lower flange portion 313 welded to the surface of the end plate 33 (opposite side surface of the second web portion 321). .. As a result, the first upper flange portion 312 and the second upper flange portion 322, and the first lower flange portion 313 and the second lower flange portion 323 whose heights are shifted are transmitted to each other via the end plate 33. Can be connected.

In the joint structure 1 of the first embodiment described above, when connecting the second steel material 32 and the wooden beam 20, the second upper flange portion 322 and the upper surface 202 of the wooden beam 20 are fastened with a large number of wood screws 325 and made of wood. A wedge-shaped member 326, which is a spacer, is interposed between the recess 25 of the lower surface 203 of the beam 20 and the second lower flange portion 323.
On the other hand, in the present embodiment, the second upper flange portion 322 and the upper surface 202 of the wooden beam 20 and the second lower flange portion 323 and the lower surface 203 of the wooden beam 20 are bonded with the adhesive 34, respectively. .. For bonding, leave a slight gap between the second upper flange portion 322 and the upper surface 202 of the wooden beam 20 and between the second lower flange portion 323 and the lower surface 203 of the wooden beam 20, and leave a slight gap between the wooden beam 20. After arranging the second steel material 32 and the second steel material 32 in a connected state, the adhesive 34 can be injected into the gap.

Also in such an embodiment, the same effect as that of the above-mentioned first embodiment can be obtained.
In particular, in the present embodiment, the yield strength of the first steel material 31 can be set low by reducing the height of the first steel material 31. In particular, by increasing or decreasing the height of the first steel material 31, the yield strength of the first steel material 31 can be easily adjusted.
At this time, since the end plate 33 is used to connect the first steel material 31 and the second steel material 32, the first upper flange portion 312 and the first lower flange portion 313 can be set to arbitrary heights, and the first steel material can be set to any height. 31 can be set to a desired height.
In the present embodiment, since the first steel material 31 and the second steel material 32 are formed vertically symmetrically with respect to the same plane of symmetry Rs, the joint structure 6 is formed while ensuring the rigidity and proof stress of the joint structure 6. The effect of plasticization can be enhanced.
Furthermore, since the joint structure 1 from the steel pipe column 10 (steel member) to the wooden beam 20 (wooden member) is vertically symmetrical, the characteristics depending on the bending direction are the same up and down, and the rigidity and proof stress are evaluated at the design stage. The need to consider asymmetry can be eliminated and the design can be facilitated.

That is, in each of the above-mentioned first to fifth embodiments, the means for joining the steel joining tool 30 itself and the wooden beam 20 (wood screw 325 or the adhesive 34) is vertically asymmetric. For this reason, the historical characteristics when a bending force is applied to the steel joint 30 also become vertically asymmetric, which may complicate the design.
On the other hand, in the present embodiment, the first steel material 31 and the second steel material 32 are vertically symmetrical, and the adhesive 34, which is a means for joining the steel joining tool 30 and the wooden beam 20, is also vertically symmetrical and joined. The entire structure 6 is vertically symmetrical.
FIG. 13 shows an angle R (vertical axis) with respect to the steel pipe column 10 generated in the wooden beam 20 when the bending moment M (vertical axis) is repeatedly applied to the steel joining tool 30 in the joining structure 6 of the present embodiment. The historical characteristics of are shown. As shown in this graph, in the joint structure 6 of the present embodiment, since the entire structure is vertically symmetrical, the history characteristics are symmetrical with respect to the origin, and the design can be simplified.

Further, in the present embodiment, the second upper flange portion 322 and the upper surface 202 of the wooden beam 20 and the second lower flange portion 323 and the lower surface 203 of the wooden beam 20 are bonded with the adhesive 34, respectively. The connection work can be simplified.

In the sixth embodiment, the first upper flange portion 312 and the first lower flange portion 313 are arranged at positions shifted from the second upper flange portion 322 and the second lower flange portion 323. Although the first upper flange portion 312 and the second upper flange portion 322 are arranged so as to be offset from each other, the first lower flange portion 313 and the second lower flange portion 323 may have the same height, and the first upper flange portion may be the same height. The portion 312 and the second upper flange portion 322 may be arranged at the same height, but the first lower flange portion 313 and the second lower flange portion 323 may be displaced from each other.

[7th Embodiment]
14 and 15 show a seventh embodiment of the present invention.
The joint structure 7 has the same basic structure as the joint structure 1 of the first embodiment described above. Further, similarly to the joint structure 6 of the sixth embodiment described above, the end plate 33 is provided, the height of the first steel material 31 is formed to be smaller than that of the second steel material 32, and the second steel material 32 and the wooden beam 20 are formed. Adhesive 34 is used for joining.
Therefore, the same reference numerals are used for the common parts of the joint structure 1 and the joint structure 6, duplicate explanations are omitted, and different parts will be described below.

In the joint structure 1 and the joint structure 6 described above, the width dimensions of the first upper flange portion 312 and the first lower flange portion 313 are the same as those of the second upper flange portion 322 and the second lower flange portion 323, but the first steel material. In order to reduce the yield strength of 31, the thickness dimension of the first upper flange portion 312 and the first lower flange portion 313 was formed to be thinner than the thickness dimension of the second upper flange portion 322 and the second lower flange portion 323. ..
Further, the width dimensions of the second upper flange portion 322 and the second lower flange portion 323 were the same, and cutout portions 315 were formed on both side edges of each.

On the other hand, in the present embodiment, the thickness dimensions of the first upper flange portion 312 and the first lower flange portion 313 are the same as the thickness dimensions of the second upper flange portion 322 and the second lower flange portion 323. The notches 315 on both side edges are omitted, and the effect of reducing the yield strength of the first steel material 31 cannot be obtained.
On the other hand, in the present embodiment, the width dimension of the first upper flange portion 312 and the first lower flange portion 313 is formed to be narrower than the second upper flange portion 322 and the second lower flange portion 323, whereby the first steel material 31 is formed. It has the effect of lowering the yield strength of.

Also in such an embodiment, the same effects as those of the first embodiment and the sixth embodiment described above can be obtained.
In particular, in the first steel material 31, the first upper flange portion 312 and the first lower flange portion 313 can be miniaturized, the structure can be simplified, and the manufacturing can be facilitated.
Either the first upper flange portion 312 or the first lower flange portion 313 may have a narrow width dimension. For example, the first upper flange portion 312 has the same width as the second upper flange, but the first one. 1 The lower flange portion 313 may have a shape narrower than that of the second lower flange portion 323, or vice versa.

[Eighth Embodiment]
FIG. 16 shows an eighth embodiment of the present invention.
In the joining structure 6 of the sixth embodiment described above, when the second steel material 32 and the wooden beam 20 are joined, the second upper flange portion 322, the upper surface 202 of the wooden beam 20, and the second lower flange portion 323 are used. The lower surface 203 of the wooden beam 20 was bonded with the adhesive 34, respectively.
On the other hand, in the joint structure 8 of the eighth embodiment, a plurality of drift pins 35 that penetrate the second web portion 321 from one side surface of the wooden beam 20 and reach the other side surface of the wooden beam 20 are used.
Also in such an embodiment, the same effects as those of the first embodiment and the sixth embodiment described above can be obtained.

[9th Embodiment]
FIG. 17 shows a ninth embodiment of the present invention.
In the joining structure 6 of the sixth embodiment described above, when the second steel material 32 and the wooden beam 20 are joined, the second upper flange portion 322, the upper surface 202 of the wooden beam 20, and the second lower flange portion 323 are used. The lower surface 203 of the wooden beam 20 was bonded with the adhesive 34, respectively.
On the other hand, in the joint structure 9 of the ninth embodiment, a plurality of wood screws 325 are screwed into the upper and lower surfaces of the second steel material 32, whereby the second upper flange portion 322 and the upper surface 202 of the wooden beam 20 are fastened. And the second lower flange portion 323 and the lower surface 203 of the wooden beam 20 are fastened.
Also in such an embodiment, the same effects as those of the first embodiment and the sixth embodiment described above can be obtained.

In the wooden beam 20 of the present embodiment, the floor member 41 is placed on the upper surface 202. The floor member 41 is formed of a concrete slab or the like, and a plurality of floor members 41 are laid out side by side on a wooden beam 20.
The edge of the floor member 41 facing the steel pipe column 10 is separated from the surface of the steel pipe column 10 by a predetermined distance, and the sealing material 42 that is flexible and does not transmit a load is packed in this distance.
In such an embodiment, when a load is applied to the floor member 41, the applied load is exclusively borne by the wooden beam 20, and direct transmission from the floor member 41 to the steel pipe column 10 can be prevented. As a result, the load is reliably transmitted to the first portion where the yield strength is set low, and the steel joint 30 can be plasticized prior to the wooden beam 20.

[Other embodiments]
The present invention is not limited to the above-described embodiment, and modifications to the extent that the object of the present invention can be achieved are included in the present invention.
In each of the above embodiments, H-shaped steel is used as the first steel material 31 and the second steel material 32 forming the steel joint 30, but T-shaped steel may be used for these. In this case, the first portion 301 and the second portion 302 may have the flange portion up or down. Further, since the flange portion is on either the upper or lower side, the spacer as in the above embodiment is omitted.
Further, the first steel material 31 and the second steel material 32 may be steel pipes having a rectangular cross section. In this case, the upper and lower surfaces or both side surfaces of the steel pipe may be used instead of the web portion and the flange portion, and both sides or both sides thereof may be used. The yield strength of the first portion 301 may be reduced by forming a strength relaxing portion on the upper and lower surfaces or reducing the wall thickness.
In addition, the steel joining tool 30 is not limited to the one in which the first steel material 31 and the second steel material 32 are joined, and the first portion 301 and the second portion 302 may be a continuous steel material, and the first portion may be used. The yield strength of the first portion 301 may be reduced by forming a strength relaxing portion in the portion corresponding to the 301 or reducing the wall thickness.
In each of the above-described embodiments, the wooden beam 20 is formed by bundling a pair of laminated materials 21. However, the wooden beam 20 is not limited to the laminated material 21, and may be a solid material. An intermediate steel plate or the like may be sandwiched. In the above embodiment, the slit 24 is formed at the end of the wooden beam 20 by sandwiching the spacer 22 between the pair of laminated materials 21, but the wooden beam 20 is formed at the end of the wooden beam 20 and cut at the end. The slit 24 may be cut by processing.

The present invention can be used for a joining structure between a wooden member and a steel member and a steel joining tool.

1-9 ... Joint structure, 10 ... Steel pipe column which is a steel member, 11 ... Upper column, 12 ... Lower column, 13 ... Beam beam joint, 14 ... Diaphragm, 15 ... Diaphragm, 20 ... Wooden which is a wooden member Beam, 201 ... end face, 202 ... top surface, 203 ... bottom surface, 21 ... laminated material, 22 ... spacer, 23 ... bolt, 24 ... slit, 25 ... recess, 30 ... steel joint, 301 ... first part, 302 ... 2nd part, 31 ... 1st steel material, 311 ... 1st web part, 312 ... 1st upper flange part, which is the 1st flange part, 313 ... 1st lower flange part, which is the 1st flange part, 314 ... Strength relaxation part Opening part, 315 ... notch part, 316 ... opening part which is a strength relaxation part, 32 ... second steel material, 321 ... second web part, 322 ... second upper flange part which is a second flange part, 323 ... The second lower flange portion, which is the second flange portion, 324 ... screw hole, 325 ... wood screw, 326 ... wedge-shaped member which is a spacer, 327 ... filler which is a spacer, 33 ... end plate, 34 ... adhesive, 35 ... drift. pin.

Claims (18)

It is a joining structure between a wooden member and a steel member to which the wooden member is joined via a steel joining tool fixed to the steel member.
The steel joiner has a first portion in which a base end portion is fixed to the steel member and a second portion to be joined to the wooden member from the tip end portion over a predetermined length.
The first portion is formed to have a lower yield strength than the steel member and the wooden member, and the seismic energy applied to the steel member and the wooden member is absorbed by the first portion. Joining structure between members and steel members. In the joint structure between the wooden member and the steel member according to claim 1,
A joint structure of a wooden member and a steel member, characterized in that at least the first portion is formed of a low yield point material. In the joint structure of the wooden member and the steel member according to claim 1 or 2.
The second portion has a second web portion inserted into a slit formed in the wooden member and at least one of the upper and lower second flange portions fixed along the surface of the wooden member.
A wooden member and a steel member, wherein the first portion has a first web portion connected to the second web portion and a first flange portion connected to the second flange portion. Joining structure. In the joint structure of the wooden member and the steel member according to claim 1 or 2.
The second portion has a second web portion inserted into a slit formed in the wooden member and at least one of the upper and lower second flange portions fixed along the surface of the wooden member.
The first portion is arranged so as to be offset in the thickness direction with respect to the first web portion extending on the extension of the second web portion and the second flange portion and extending in the direction parallel to the second flange portion. A joint structure of a wooden member and a steel member, characterized by having a flange portion. In the joint structure of the wooden member and the steel member according to claim 3 or 4.
A wooden member and a steel member having an end plate to which the second web portion and the second flange portion are joined to one surface and the first web portion and the first flange portion are joined to the opposite surface. Joint structure with. In the joint structure of the wooden member and the steel member according to any one of claims 3 to 5.
The thickness of the first flange portion is formed thinner than that of the second flange portion, or
The thickness of the first web portion is formed thinner than that of the second web portion, or
A wooden member and a steel member characterized in that the thickness of the first flange portion is formed thinner than the second flange portion and the thickness of the first web portion is formed thinner than that of the second web portion. Joint structure with. In the joint structure of the wooden member and the steel member according to any one of claims 3 to 6.
The width of the first flange portion is formed narrower than that of the second flange portion, or
The width of the first web portion is formed narrower than that of the second web portion, or
A wooden member and a steel member characterized in that the width of the first flange portion is formed to be narrower than that of the second flange portion and the width of the first web portion is formed to be narrower than that of the second web portion. Joint structure with. In the joint structure of the wooden member and the steel member according to any one of claims 3 to 7.
A joint structure between a wooden member and a steel member, wherein the first web portion has a concave or hole-shaped strength relaxing portion. In the joint structure of the wooden member and the steel member according to any one of claims 3 to 8.
A joint structure between a wooden member and a steel member, wherein the first flange portion has a notch on a side edge. In the joint structure of the wooden member and the steel member according to any one of claims 3 to 9.
The second flange portion includes a second upper flange portion fixed along the upper surface of the wooden member and a second lower flange portion fixed along the lower surface of the wooden member.
A wooden characterized in that a spacer is interposed in at least one of a gap between the upper surface of the wooden member and the second upper flange portion and a gap between the lower surface of the wooden member and the second lower flange portion. Joining structure between members and steel members. In the joint structure between the wooden member and the steel member according to claim 10.
A joint structure between a wooden member and a steel member, wherein the spacer is a wedge-shaped member that is press-fitted into the gap. In the joint structure between the wooden member and the steel member according to claim 10.
A bonding structure between a wooden member and a steel member, wherein the spacer is a filler that is filled in the gap and hardened. In the joint structure of the wooden member and the steel member according to any one of claims 3 to 9.
The second flange portion includes a second upper flange portion fixed along the upper surface of the wooden member and a second lower flange portion fixed along the lower surface of the wooden member.
The upper surface of the wooden member and the second upper flange portion are joined by a plurality of wood screws or adhesives.
The lower surface of the wooden member and the second lower flange portion are joined with a plurality of wood screws or adhesives.
Wooden characterized in that the joint structure between the upper surface of the wooden member and the second upper flange portion and the joint structure between the lower surface of the wooden member and the second lower flange portion are formed vertically symmetrically. A joint structure between a member and a steel member. In the joint structure of the wooden member and the steel member according to any one of claims 3 to 9.
The wooden member and the second web portion are joined by one or more drift pins penetrating the second web portion and the wooden members on both sides thereof.
A joint structure between a wooden member and a steel member, wherein the wooden member, the second web portion, and the plurality of drift pins are formed vertically symmetrically. In the joint structure of the wooden member and the steel member according to claim 13 or 14.
The first portion is a joint structure of a wooden member and a steel member, characterized in that the first portion is formed vertically symmetrically with respect to the same plane of symmetry as the second portion. In the joint structure of the wooden member and the steel member according to any one of claims 1 to 15.
The steel joint is a wooden member and steel, wherein the first portion and the second portion are formed of a first steel material and a second steel material using H-shaped steel or T-shaped steel, respectively. Joint structure with manufacturing members. In the joint structure of the wooden member and the steel member according to any one of claims 1 to 16.
The steel member is a steel pipe column and
The wooden member is a wooden beam.
The floor member supported by the wooden beam is a joint structure between the wooden member and the steel member, characterized in that a space is formed between the floor member and the steel pipe column. A steel joint used for a joint structure between a wooden member and a steel member.
It has a first portion in which the base end portion is fixed to the steel member and a second portion joined to the wooden member from the tip end portion over a predetermined length.
A steel joiner characterized in that at least the yield strength of the first portion is formed lower than that of the steel member and the wooden member.

Images