JP7233586B1 - building material - Google Patents

Abstract

A building member with improved manufacturability, fire resistance, environmental friendliness and workability is provided. A web (10) extending along a first direction, a first flange (20) perpendicular to the web (10) and provided at one end of the web (10), and a flange (20) perpendicular to the web (10) and provided at the other end of the web (10). a second flange 30, wherein the first flange 20 is attached to the structure A, and the side of the second flange 30 opposite the one end side is attached with the first wood 40. Characterized by [Selection drawing] Fig. 1

Description

The present invention relates to building members.

Composite members made of wooden members and steel members are sometimes used as building members. Non-Patent Document 1 discloses a member in which a fire-resistant laminated lumber is arranged around an H-shaped steel.

Japan Laminated Timber Industry Cooperative, “Pamphlet of Woody Hybrid Laminated Lumber” [online]. wp-content/uploads/2016/04/hybridsyuseizai_pamphlet.pdf >

The member disclosed in Non-Patent Document 1 is arranged so that the laminated lumber covers the entire circumference of the H-section steel except for the ends in the longitudinal direction. Therefore, it is necessary to process the laminated lumber in accordance with the shape of the H-section steel. In addition, high precision is required when processing laminated lumber in conformity with H-section steel. In addition, when a pipe or the like is to be passed through a beam, it is difficult to construct a beam through-hole in laminated lumber. As described above, there is a problem in the manufacturability of building members.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a building member with improved manufacturability and workability.

In order to solve the above problems, the present invention proposes the following means.
A building member according to the present invention comprises a web extending along a first direction, a first flange perpendicular to the web and provided on one end of the web, and a flange perpendicular to the web and on the other end of the web. and a second flange provided, wherein the first flange is attached to the structure, and a side surface of the second flange opposite to the one end side is attached with the first wood. and

According to the invention, the first flange is attached to the structure and the side of the second flange opposite to the one end of the web is attached with the first timber. That is, the first timber is attached to the opposite side of the first flange attached to the structure. As a result, it is possible to secure the appearance while minimizing the amount of wood to be installed. Therefore, it is possible to eliminate the need to process wood with high precision in order to cover the entirety of the web, the first flange, and the second flange. Therefore, manufacturability can be improved. In addition, manufacturing costs can be reduced by minimizing the amount of wood used.

A second wooden piece may be attached to a side surface of the second flange on the one end side.

According to this invention, the second timber is attached to the side surface of the second flange, which is the side surface on the one end side of the web. As a result, for example, both side surfaces of the second flange can be covered by the first wooden piece and the second wooden piece so as to be sandwiched between the wooden pieces without processing the wooden piece to match the shape of the shaped steel with high accuracy. Therefore, as compared with the case where only the first wooden piece is attached to the second flange, it is possible to remarkably obtain effects such as reinforcement without impairing the effects of improving manufacturability and reducing manufacturing costs.

Further, the first wooden piece may be attached to a side surface of the second flange opposite to the one end side by a connector.

According to this invention, the first wooden piece is attached by the connector to the side surface of the second flange opposite to the one end side. As a result, the degree of close contact between the first wooden piece and the second flange can be made higher than when the first wooden piece and the second flange are directly attached only by bolts or the like without using a connector. Therefore, it is possible to remarkably obtain effects such as reinforcement and rigidity impartation.

Further, the head of the connector may be covered with a first wood grain member.

According to this invention, the head of the connector is covered with the first wood grain member. Therefore, it is possible to prevent the head of the connector from being seen when the first wooden piece is viewed from the outside. Therefore, the degree of close contact between the first wooden piece and the second flange can be increased, and the design can be improved.

Further, the first wood may be characterized in that it bears a stress due to a load.

According to this invention, the first wood bears the stress due to the load. Specifically, the load applied to the second flange is transmitted to the first wood, thereby bearing the stress. Thereby, the second flange can be reinforced. Therefore, the strength and fatigue strength of the building member can be improved against the stress generated by the weight of the structure itself and the input due to an earthquake or the like.

Further, the first wood may be characterized by having a fireproof coating function.

According to this invention, the first wood has a fireproof coating function. Thereby, when a fire occurs in the structure, it is possible to delay the propagation of heat to the second flange. Therefore, it is possible to improve the fire resistance of the building member.

Further, on the side surface of the second flange on the one end side, the area of the building member to which the second wood is attached and which is separated from both ends of the building member by a predetermined distance is defined as a first area. A region other than the first region is defined as a second region, a third wood is arranged in the second region, and the first wood and the second wood arranged in the first region are loaded The third wooden piece placed in the second region may not bear the stress caused by the load.

According to this invention, the third wooden piece is arranged in the second area, the first wooden piece and the second wooden piece arranged in the first area bear the stress due to the load, and the second wooden piece arranged in the second area bears the stress caused by the load. 3 Wood does not bear stress due to loading. Since the third wooden material does not bear the stress due to the load, the first area of the building member is deformed, and even if the first and second wooden materials are deformed, the third wooden material located in the second area is deformed. can prevent you from doing it. Therefore, it is possible to prevent other members connected to both longitudinal ends of the building member from being affected by the third wood located in the second region. In addition, when the building member is deformed, it is possible to prevent the first wooden piece or the second wooden piece from being damaged due to the interference of the third wooden piece.

In addition, the third lumber arranged in the second region includes both end-side lumber located on both end sides of the building member and opposite-side lumber located on the opposite side to the both end sides, and The lumber may be arranged in the second area after the lumber on both ends is arranged in the second area.

According to this invention, the third piece of wood includes both end-side pieces of wood and the opposite-side piece of wood, and the opposite-side piece of wood is placed in the second area after both end-side pieces of wood are placed in the second area. Here, the connecting portion between the building member and the other member is located, for example, in the second area where the opposite-side lumber is arranged. In such a case, in the second region, the both-end members are first attached to the portions where the connecting portion between the building member and the other member is not located. Thereby, regardless of the construction schedule of the structure, both end members can be attached. Then attach the wood on the other side. Thereby, after the building member and another member are connected, the connection can be hidden by the wood on the opposite side. Therefore, at the construction site, it is possible to arbitrarily determine the timing of attaching the wood on the opposite side. Therefore, it is possible to make it easier to adjust the construction schedule.

Further, a covering member that covers the first wooden piece may be further provided, and the covering member may have a fireproof function.

According to this invention, the covering member that covers the first wooden piece is further provided, and the covering member has a fireproof function. As a result, when a fire breaks out in the structure, it is possible to delay the propagation of heat to the first wood. Therefore, it is possible to further improve the fire resistance of the building member. When the first lumber has fireproof coating performance, the fireproof performance of the building member can be improved more remarkably.

Further, the covering member may include a flaming margin layer positioned on the outer peripheral surface side, and a flaming stop layer positioned inside the flaming margin layer.

According to this invention, the burnout layer located on the outer peripheral surface side and the burnout stop layer located inside the burnout layer are provided. As a result, when a fire occurs in the structure, the flammable layer burns first. As a result, it is possible to delay the propagation of heat to the first wood or the like or the direct contact of the flame with the first wood or the like. After the burning margin layer burns, the flame hits the burning stop layer. At this time, since the covering member is difficult to burn, it is possible to further delay the flame from directly hitting the first wood or the like. Therefore, it is possible to improve the fire resistance of the building member.

The structure may further include a second wood grain member disposed between the first wood and the structure.

According to this invention, the second wooden member is further provided between the first wooden piece and the structure. This prevents the web and the first flange located between the first wood and the structure from being seen from the outside. Therefore, it is possible to improve the design of the building member. Furthermore, when the density of the second wood grain member is 0.4 g/cm ³ or more, the fire resistance can be secured.

In addition, a heat insulating material covering the web and the first flange may be further provided.

According to the invention, it further comprises a thermal insulator covering the web and the first flange. Thereby, when a fire occurs in the structure, it is possible to delay the propagation of heat to the web and the first flange. Therefore, it is possible to further improve the fire resistance of the building member.

Also, the density of the first wood may be 0.4 g/cm ³ or more.

According to this invention, the density of the first wood is 0.4 g/cm ³ or more. As a result, the fireproof covering performance of the first wood can be ensured.

Further, the first wood may be characterized by being a wood impregnated with an incombustible chemical.

According to this invention, the first wood is wood impregnated with the non-combustible chemical. As a result, the fireproof covering performance of the first wood can be ensured more reliably.

ADVANTAGE OF THE INVENTION According to this invention, the building member which improved manufacturability and workability can be provided.

It is an example in which the building member according to the present invention is attached to a structure. It is the 1st example of the section which intersects perpendicularly with the longitudinal direction of the building member concerning the present invention. It is a modification of the first example of the building member shown in FIG. It is the 2nd example of the cross section orthogonal to the longitudinal direction of the building member which concerns on this invention. It is a modification of the second example of the building member shown in FIG. 3 is a third example of a cross section perpendicular to the longitudinal direction of the building member according to the present invention; It is the 4th example of the section which intersects perpendicularly with the longitudinal direction of the building member concerning the present invention. It is the 5th example of the section which intersects perpendicularly with the longitudinal direction of the building member concerning the present invention. It is the 6th example of the section which intersects perpendicularly with the longitudinal direction of the building member concerning the present invention.

A construction member 1000 according to an embodiment of the present invention will be described below with reference to the drawings. The building member 1000 is used for a structure A such as a building, for example.
In this embodiment, the building member 1000 is arranged horizontally along the counterpart member B of the structure A, as shown in FIG. The mating member B is, for example, a slab. The building member 1000 may be arranged vertically along the pillar P of the structure A.

In the building member 1000, longitudinal ends of the web 10, the first flange 20, and the second flange 30, which will be described later, are connected to other members. Both ends of the web 10, the first flange 20, and the second flange 30 in the longitudinal direction are connected to joint portions PJ projecting from the columns P of the structure A, for example. The connecting portions J between the longitudinal ends of the web 10, the first flanges 20, and the second flanges 30 and the joint portions PJ are bolted via splicing plates SP, for example.
In this embodiment, the building member 1000 is described as including a joint portion PJ in addition to each configuration described later.

In this embodiment, the building member 1000 bears the stress due to the load. The load is, for example, a static load due to the weight of the structure A itself. The load may be a dynamic load applied to the structure A due to an earthquake, strong wind, or the like.
Hereinafter, in the present embodiment, the longitudinal regions of the building member 1000 may be distinguished into a first region A1 and a second region A2. The first area A1 is an area separated by a predetermined distance from both ends of the building member 1000 in the longitudinal direction. The predetermined distance is, for example, about 10% to 20% of the total length of the building member 1000 . The second area A2 is an area of the building member 1000 other than the first area A1.

As shown in FIGS. 1 and 2, the building member 1000 includes a web 10, a first flange 20, a second flange 30, a first wood 40, a second wood 50, a connector 60, and a first wood grain. A member 70, a third wood 80, a heat insulating material 90, and a second wood grain member 100 are provided.
The web 10 extends along the first direction D1. In this embodiment, the first direction D1 is the vertical direction. The first direction D1 may be horizontal.

First flange 20 is perpendicular to web 10 . A first flange 20 is provided on one end side of the web 10 . A first flange 20 is attached to the structure A. Specifically, the first flange 20 is attached to the structure A on the side opposite the side facing the web 10 .
In this embodiment, the one end side of the web 10 means the upper side in the vertical direction. The surface of the first flange 20 opposite to the side facing the web 10 refers to the surface positioned above the first flange 20 . The first flange 20 is attached to the counterpart member B of the structure A on the upper side.

The side of the first flange 20 opposite the side facing the web 10 may be attached to the post P of the structure A if the building member 1000 is oriented vertically.
Attachment of the 1st flange 20 and the structure A is performed by bolt fastening, for example. Attachment of the first flange 20 and the structure A may be performed by welding or the like.

A second flange 30 is perpendicular to the web 10 . A second flange 30 is provided on the other end side of the web 10 . In the present embodiment, the other end side of the web 10 means the lower side in the vertical direction.
With the above configuration, the web 10, the first flange 20 and the second flange 30 are formed in an H shape. A steel plate, for example, is preferably used for the web 10, the first flange 20, and the second flange 30. As shown in FIG. The web 10, the first flange 20 and the second flange 30 are joined by welding or the like, for example. As a structure corresponding to the web 10, the first flange 20, and the second flange 30, a known H-section steel may be used.

The first wood 40 is wood attached to the second flange 30 . The first wood 40 is arranged in the first area A1. The first wooden piece 40 is attached to the side surface of the second flange 30 that is opposite to the one end side. In other words, in this embodiment, the first wooden piece 40 is attached to the lower surface of the second flange 30 .
The first wooden piece 40 has a connector hole 60h for arranging a connector 60, which will be described later. First wood 40 is attached to second flange 30 by connector 60 . Thereby, the first wood 40 reinforces the second flange 30 . That is, the first wood 40 bears the stress generated in the second flange 30 due to the load applied to the building member 1000 . Specifically, the load applied to the second flange 30 is transmitted to the first wood 40, thereby bearing the stress.

The first wood 40 has a fireproof covering function. Specifically, the first wood 40 has fire resistance. The first wood 40 is attached to the building member 1000 to cover the building member 1000 . As the fire resistance, the first wood 40 is, for example, wood having fire resistance. Specifically, the first wood 40 is wood having a density of 0.4 g/cm ³ or more. Larch, for example, is preferably used for the first wood 40 . A material that satisfies the density described above may be appropriately selected and used for the first wooden piece 40 . Also, the first wood 40 is a wood impregnated with an incombustible chemical. For example, a boron-based chemical, liquid glass, or the like is used as the nonflammable chemical. As a result, the first wood 40 delays the propagation of heat from the flame to the second flange 30 when a fire breaks out in the structure A. Thus, the first wood 40 has a fireproof covering function in the building member 1000 .

The second wood 50 is wood attached to the second flange 30 . The second wooden piece 50 is the same as the first wooden piece 40 in that it is arranged in the first area A1. The second wood 50 is attached to the side surface of the second flange 30 on the one end side. In other words, in this embodiment, the second wooden piece 50 is attached to the upper surface of the second flange 30 .
The second wood 50 has a connector hole 60h for arranging the connector 60. As shown in FIG. The second wood 50 is attached to the second flange 30 by the connector 60 arranged inside the connector 60 hole. Thereby, the second wood 50 reinforces the second flange 30 . That is, the second wood 50 bears the stress generated in the second flange 30 due to the load applied to the building member 1000 . In this embodiment, when the second flange 30 is provided with both the first wooden piece 40 and the second wooden piece 50, at least one of the first wooden piece 40 and the second wooden piece 50 bears the stress due to the load. Specifically, the load applied to the second flange 30 is transmitted to at least one of the first wood 40 and the second wood 50 to bear the stress. This reinforces the second flange 30 .

In this embodiment, the second wooden piece 50 has the same fireproof coating function as the first wooden piece 40 . Alternatively, the second wood 50 may not have the fireproof coating function.
The second wooden piece 50 differs from the first wooden piece 40 in that it is arranged on the opposite side of the first wooden piece 40 across the second flange 30 . Further, the second lumber 50 differs from the first lumber 40 in that it is divided across the web 10 as shown in FIG.

The connector 60 attaches the first wooden piece 40 and the second wooden piece 50 to the second flange 30 . Connector 60 has a hollow portion. The connector 60 is, for example, a tubular member made of steel. The connector 60 is arranged in a connector hole 60 h provided in the first wooden piece 40 and the second wooden piece 50 . A plurality of connectors 60 are provided at intervals in the longitudinal direction of the building member 1000 . That is, a plurality of connector holes 60h are also provided at intervals. The connectors 60 may be concentrated near the ends in the longitudinal direction of the building member 1000 .

The connector 60 is fixed by being press-fitted into the connector hole 60h, for example. Therefore, the outer diameter of the connector 60 is preferably larger than the inner diameter of the connector hole 60h. Also, the connector 60 is attached to the second flange 30 by high-strength bolts TB and nuts N. As shown in FIG. Therefore, the inner diameter of the hollow portion of the connector 60 is preferably larger than the diameter of the high-strength bolt TB. Specifically, a high-strength bolt TB passing through a bolt hole provided in the connector 60 and the second flange 30 is tightened with a nut N. Thereby, the connector 60 is friction-joined to the second flange 30 .

At this time, the connector 60 is compressed by the tightening force of the high-strength bolt TB and nut N. Accordingly, the connector 60 deforms so as to expand in a direction perpendicular to the axial direction of the high-strength bolt TB. As a result, the connector 60 bites into the inner wall of the connector hole 60h. As a result, the connector 60 and the first wooden piece 40 and the second wooden piece 50 are fixed more firmly. Thus, the connector 60 attaches the first wooden piece 40 and the second wooden piece 50 to the second flange 30 . This allows the first wooden piece 40 and the second wooden piece 50 to bear the stress generated in the second flange 30 .

As shown in FIGS. 1 and 2, the first wooden piece 40 and the second wooden piece 50 are simultaneously attached to the second flange 30 by a set of high strength bolts TB and nuts N. As shown in FIGS. Therefore, the positions of the connector holes 60h of the first member and the second member are preferably formed at positions corresponding to each other.

The first wood grain member 70 covers the head of the connector 60 . Specifically, the first wood grain member 70 is arranged in the connector hole 60 h provided in the first wooden piece 40 or the second wooden piece 50 . This serves to prevent the connector 60 from being seen from the outside. The first wood grain member 70 is, for example, a disk-shaped member having a diameter larger than that of the connector hole 60h. The first wood grain member 70 is fixed by being fitted inside the connector hole 60h. The first wood grain member 70 may be fixed to the inner peripheral surface of the connector hole 60h with an adhesive or the like.

The first wood grain member 70 is made of the same material as the first wood 40 or the second wood 50, for example. The first wood grain member 70 may be another material having a grain similar to that of the first wood 40 or the second wood 50 . For example, the first woodgrain member 70 may be a resin material or the like having a woodgrain surface.

The third wood 80 is arranged in the second area A2. The third wooden piece 80 is the same as the first wooden piece 40 and the second wooden piece 50 in that it is attached to the second flange 30 . In this embodiment, the third wooden piece 80 has the same fireproof coating function as the first wooden piece 40 . Alternatively, the third wood 80 may not have the fireproof coating function.
The third wooden piece 80 arranged in the second area A2 differs from the first wooden piece 40 and the second wooden piece 50 in that it does not bear the stress due to the load.
Therefore, when attaching the third wooden piece 80 to the second flange 30 , it is attached in a manner different from that of the first wooden piece 40 and the second wooden piece 50 . Specifically, the third wooden piece 80 is attached with a lower degree of adhesion to the second flange 30 than the first wooden piece 40 and the second wooden piece 50 . For example, the third wood 80 is attached to the second flange 30 only by high-strength bolts TB and nuts N without using the connector 60 .

The third wood 80 may be attached to the second flange 30 using the connector 60 as follows. That is, for example, the third wooden piece 80 has a connector hole 60h having the same diameter as the first wooden piece 40 and the second wooden piece 50, and the connector hole 60h of the third wooden piece 80 has the first wooden piece 40 and the second wooden piece 50. A connector 60 having a smaller outer diameter than that used in the . When using the same connector 60 as that used for the first wooden piece 40 and the second wooden piece 50, the connector hole 60h formed in the third wooden piece 80 is formed larger than the first wooden piece 40 and the second wooden piece 50. good too.
By doing so, the connector 60 is prevented from biting into the inner wall of the connector hole 60 h of the third wood 80 . This reduces the degree of adhesion between the connector 60 and the third wooden piece 80 . As described above, the third wooden piece 80 may be attached with a lower degree of adhesion to the second flange 30 than the first wooden piece 40 and the second wooden piece 50 .

The third wooden piece 80 includes, as shown in FIG.
The end-side wooden pieces 81 are positioned on both end sides of the building member 1000 in the longitudinal direction. The opposite-side wood 82 is located on the opposite side to the both end sides in the second area A2.
The woods 81 on both ends are attached to the joints PJ of the pillars P, as shown in FIG. Here, the joint portion PJ has a shape corresponding to each of the web 10 , the first flange 20 , and the second flange 30 in the longitudinal direction of the building member 1000 . The wood pieces 81 on both ends are attached to portions of the joint portion PJ corresponding to the second flanges 30 . The opposite side wood 82 is attached so as to cover the connecting portion J between the joint portion PJ and the second flange 30 .

The opposite side wood 82 is arranged in the second area A2 after the both end side wood 81 is arranged in the second area A2. As a result, in the construction of the structure A, it is possible to first attach the both end-side lumbers 81 to the joint portions PJ. In addition, the step of covering the connecting portion J with the wood 82 on the opposite side can be performed later. This makes it easier to adjust the construction schedule of the structure A.

In this embodiment, in order to prevent the opposite-side wood 82 from being erroneously attached first, it is preferable to have a structure in which the opposite-side wood 82 cannot be attached unless both end-side woods 81 are attached first. For example, it is preferable to provide a structure in which the wood pieces 81 on both ends and the wood piece 82 on the opposite side are in contact with each other so that they are arranged in correct positions by meshing with each other.

The wood pieces 81 on both ends and the wood pieces 82 on the opposite side are formed in a U shape, for example, in accordance with the shapes of the second flange 30 and the portion corresponding to the second flange 30 of the joint portion PJ. As a result, the wood 81 on both ends and the wood 82 on the opposite side approach the second flange 30 or the joint PJ from the thickness direction of the web 10, and the second flange 30 or the joint PJ is located in the U-shaped valley. It is attached by being fitted. Alternatively, the wood pieces 81 on both ends and the wood piece 82 on the opposite side may be formed separately and arranged so as to sandwich the second flange 30 or the joint portion PJ from both side surfaces in the thickness direction of the second flange 30. .

A thermal insulator 90 covers the web 10 and the first flange 20 . The heat insulating material 90 is, for example, a material having a fire resistance performance of 1 to 3 hours. As a result, the portions of the building member 1000 to which the first wooden piece 40, the second wooden piece 50, and the third wooden piece 80 are not attached are protected from the heat of the fire. The heat insulating material 90 is, for example, a spray material. For example, rock wool is preferably used as the spray material. The heat insulating material 90 may be a wrapped material. A sheet-like member made of, for example, nonwoven fabric and rock wool is preferably used as the wrapping material.

The second wood grain member 100 is a plate-like member extending in the longitudinal direction of the building member 1000 . The second wood grain member 100 is arranged along the longitudinal direction of the building member 1000 . The second wood grain member 100 is arranged, for example, at least in the region where the first wooden member 40 of the building member 1000 is arranged. The second wood grain member 100 is arranged between the second wood 50 and the structure A. As shown in FIG. As shown in FIG. 2, the second wood grain member 100 is in contact with the counterpart member B of the structure A at one end in the width direction, for example. For example, the other end in the width direction of the second wood grain member 100 is in contact with the side surface of the web 10 of the second wood 50 on the other end side. The second wood grain member 100 is adhered to the structure A and the first wood 40 with an adhesive. The second wood grain member 100 may be fixed to the structure A and the first wood 40 with nails, bolts, or the like.

The second wood grain member 100 is arranged so as to be flush with the first wooden member 40 and the second wooden member 50 in the thickness direction of the web 10 . Thereby, the second wood grain member 100 functions as a so-called facing wood.
The second wood grain member 100 is made of the same material as the first wood 40 and the second wood 50, for example. At this time, it is preferable that the second wood grain member 100 has a fireproof covering function similar to that of the first wooden member 40 . A material other than wood may be used for the second wood grain member 100. In this case, the second wood grain member 100 preferably has a wood grain finish on its surface. A wood grain sheet may be attached to the surface of the second wood grain member 100 instead of applying the wood grain texture to the surface of the second wood grain member 100 .

(Modification)
Modifications of the building member 1000 according to the present embodiment described above will be described below with reference to FIGS. 3 to 9. FIG.
As shown in FIG. 3, the second wood grain member 100, the heat insulating material 90, and the web 10 may be provided with through holes H through which facilities F such as pipes in the structure A pass. The through-holes H may be provided in advance in each of the above members before construction of the building member 1000 . The through-hole H may be provided by drilling the building member 1000 after construction at the construction site. The through-holes H according to the present embodiment can be easily formed, for example, compared to the case where reinforcing wood is arranged so as to be in close contact with the entire outer peripheral surfaces of the web 10, the first flange 20, and the second flange 30. It is possible to form

As shown in FIG. 4 , when the ceiling C of the living room in the structure A is in contact with the first wooden member 40 , the building member 1000 does not need to include the second wooden member 100 .
As shown in FIG. 5, even if the building member 1000 does not include the second wood grain member 100, the heat insulating material 90 and the web 10 may be provided with through holes H for passing the equipment F therethrough.
As shown in FIG. 6, in the case where the ceiling C of the room in the structure A is in contact with the first timber 40, if the second flange 30 can ensure sufficient strength, the building member 1000 is formed by the second timber 50. You don't have to.
If the building member 1000 does not have the second wood 50, the second wood grain member 100 may be placed between the first wood 40 and the structure A as shown in FIG. 7 or FIG.

As shown in FIG. 8, when the building member 1000 includes a first wooden piece 40 and a second wooden piece 50, a covering member 110 may be provided so as to cover the first wooden piece 40 and the second wooden piece 50. . As shown in FIG. 9 , when the building member 1000 includes only the first wood 40 , the covering member 110 may be provided so as to cover the first wood 40 .

The covering member 110 has a fireproof function. The fireproof function specifically means having fireproof performance for 1 to 3 hours, for example. The covering member 110 includes a burnout layer 111 and a burnout layer 112 .
The embers layer 111 is located on the outer peripheral surface side of the covering member 110 . The embers layer 111 is a portion that burns first when a fire occurs in the structure A. This delays the propagation of the heat of the flame to the first wood 40, the second flange 30, and the like, and the direct contact of the flame.

The burnout layer 112 is positioned inside the burnout layer 111 . The flame stop layer 112 has flame resistance. Specifically, flame retardancy means, for example, not burning for 5 minutes or longer after heating is started. A fire occurs in the structure A, and after the burnout layer 111 burns, the flame hits the burnout layer 112 . At this time, the flame-retardant layer 112 further delays the propagation of the heat of the flame to the first wood 40, the second flange 30, and the like, and the direct contact of the flame.

In this embodiment, the covering member 110 is, for example, a wood different from the first wood 40 . For example, cedar material or the like can be used for the embers layer 111 in the covering member 110 . A material other than wood may be used for the flammable layer 111 . A gypsum board, for example, is used for the flame stop layer 112 . The burnout layer 111 and the burnout layer 112 differ, for example, in terms of fire resistance.

The covering member 110 is attached to the first wooden piece 40 with an adhesive, for example. The covering member 110 may be attached to the first wood 40 with wooden rivets or the like. Not limited to this, the covering member 110 may be attached to the first wooden piece 40 in any manner.
Further, as the coating member 110, only the burn-stop layer 112 may be provided, and the burn-off layer 111 may not be provided.

As described above, according to the building member 1000 according to this embodiment, the first flange 20 is attached to the structure A, and the side surface of the second flange 30 opposite to the one end side of the web 10 is attached with the first timber 40 . That is, the first wooden piece 40 is attached to the opposite surface of the first flange 20 attached to the structure A. As a result, it is possible to secure the appearance while minimizing the amount of wood to be installed. Therefore, in order to cover the web 10, the first flange 20, and the second flange 30 entirely, it is not necessary to process wood with high precision. Therefore, manufacturability can be improved. In addition, manufacturing costs can be reduced by minimizing the amount of wood used.

A second wooden piece 50 is attached to the side surface of the second flange 30 on the one end side of the web 10 . As a result, for example, both side surfaces of the second flange 30 can be covered by the first wooden piece 40 and the second wooden piece 50 so as to be sandwiched between them without processing the wooden pieces to match the shape of the shaped steel with high accuracy. Therefore, as compared with the case where only the first wooden piece 40 is attached to the second flange 30, it is possible to obtain a more remarkable effect such as reinforcement without impairing the effect of improving the productivity and reducing the manufacturing cost.

A first wooden piece 40 is attached by a connector 60 to a side surface of the second flange 30 that is opposite to the one end side. As a result, the degree of close contact between the first wooden piece 40 and the second flange 30 is increased compared to the case where the first wooden piece 40 and the second flange 30 are directly attached only by bolts or the like without using the connector 60. be able to. Therefore, it is possible to remarkably obtain effects such as reinforcement and rigidity impartation.

Also, the head of the connector 60 is covered with a first wood grain member 70 . Therefore, it is possible to prevent the head of the connector 60 from being seen when the first wooden piece 40 is viewed from the outside. Therefore, the degree of close contact between the first wooden piece 40 and the second flange 30 can be increased, and the design can be improved.

Also, the first wood 40 bears the stress due to the load. Specifically, the load applied to the second flange 30 is transmitted to the first wood 40, thereby bearing the stress. Thereby, the second flange 30 can be reinforced. Therefore, the strength and fatigue strength of the building member 1000 can be improved against the stress generated by the weight of the structure A and the input due to an earthquake or the like.

Also, the first wood 40 has a fireproof covering function. As a result, when a fire occurs in the structure A, the propagation of heat to the second flange 30 can be delayed. Therefore, the fireproof performance of the building member 1000 can be improved.

In addition, the third wooden piece 80 is arranged in the second area A2, and the first wooden piece 40 and the second wooden piece 50 arranged in the first area A1 bear the stress due to the load and are arranged in the second area A2. The third wood 80 that is on the side does not bear the stress due to the load. Since the third wooden piece 80 does not bear the stress due to the load, the first area A1 of the building member 1000 is deformed. It is possible to prevent the third wood 80 from deforming. Therefore, it is possible to prevent other members connected to both longitudinal ends of the building member 1000 from being affected by the third wood 80 located in the second region A2. In addition, when the building member 1000 is deformed, the interference of the third wooden piece 80 can prevent the first wooden piece 40 or the second wooden piece 50 from being damaged.

In addition, the third wooden piece 80 includes both end side wooden pieces 81 and the opposite side wooden piece 82, and the opposite side wooden piece 82 is arranged in the second area A2 after the both end side wooden pieces 81 are arranged in the second area A2. be done. Here, the connecting portion J between the building member 1000 and another member is located, for example, in the second region A2 where the opposite-side wood 82 is arranged. In such a case, in the second region A2, the both-end members are first attached to the portions where the joints J between the building member 1000 and other members are not located. Thereby, regardless of the construction schedule of the structure A, both end members can be attached. After that, the wood 82 on the opposite side is attached. Thereby, after the building member 1000 and another member are connected, the connection portion J can be hidden by the opposite side wood 82 . Therefore, it is possible to arbitrarily determine the timing of attaching the opposite-side wood 82 at the construction site. Therefore, it is possible to make it easier to adjust the construction schedule.

Moreover, the covering member 110 which covers the 1st wood 40 is further provided, and the covering member 110 has a fireproof function. As a result, when a fire breaks out in the structure A, the propagation of heat to the first wood 40 can be delayed. Therefore, the fireproof performance of the building member 1000 can be further improved. When the first wood 40 has fireproof coating performance, the fireproof performance of the building member 1000 can be improved more remarkably.

It also has a burnout layer 111 located on the outer peripheral surface side and a burnout stop layer 112 located inside the burnout layer 111 . As a result, when a fire occurs in the structure A, the flammable layer 111 burns first. As a result, it is possible to delay the propagation of heat to the first wood 40 and the like and the direct contact of the flame to the first wood 40 and the like. After the burning margin layer 111 burns, the burning stop layer 112 is hit with the flame. At this time, since the covering member 110 is difficult to burn, it is possible to further delay the flame from directly hitting the first wood 40 or the like. Therefore, the fireproof performance of the building member 1000 can be improved.

Moreover, the second wooden member 100 arranged between the first wooden member 40 and the structure A is further provided. As a result, the web 10 and the first flange 20 located between the first wooden piece 40 and the structure A can be prevented from being seen from the outside. Therefore, the designability of the building member 1000 can be improved. Furthermore, when the density of the second wood grain member 100 is 0.4 g/cm ³ or more, it is possible to ensure fire resistance.

Also, a heat insulating material 90 covering the web 10 and the first flange 20 is further provided. As a result, when a fire occurs in the structure A, the propagation of heat to the web 10 and the first flange 20 can be delayed. Therefore, the fireproof performance of the building member 1000 can be further improved.

Also, the density of the first wood 40 is 0.4 g/cm ³ or more. As a result, the fireproof covering performance of the first wooden piece 40 can be ensured.

Also, the first wood 40 is a wood impregnated with an incombustible chemical. As a result, the fireproof covering performance of the first wooden piece 40 can be ensured more reliably.

The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
For example, any of the modifications shown in FIGS. 6 to 9 may have a through hole H.

In addition, it is possible to appropriately replace the constituent elements in the above-described embodiment with well-known constituent elements without departing from the spirit of the present invention, and the modifications described above may be combined as appropriate.

10 Web 20 First flange 30 Second flange 40 First wood 50 Second wood 60 Connector 70 First wood member 80 Third wood 81 Both ends wood 82 Opposite wood 90 Heat insulating material 100 Second wood grain member 110 Covering member 111 Burning White layer 112 Burn-stop layer 1000 Building member A Structure A1 First region A2 Second region D1 First direction

Claims (12)

a building member,
a web extending along a first direction;
a first flange perpendicular to the web and provided on one end side of the web;
a second flange perpendicular to the web and provided on the other end side of the web;
with
the first flange is attached to a structure;
A first wooden piece is attached to a side surface of the second flange opposite to the one end side,
A second wooden piece is attached to a side surface of the second flange on the one end side,
A region of the building member separated by a predetermined distance from both ends of the building member is defined as a first region,
a region of the building member other than the first region is defined as a second region;
A third piece of wood is arranged in the second region,
The first wooden piece and the second wooden piece arranged in the first region bear the stress due to the load,
The third wood arranged in the second region does not bear the stress due to the load,
A building member characterized by: A side surface of the second flange that is opposite to the one end side is attached with the first wooden piece by a connector,
The building member according to claim 1, characterized in that: the head of the connector is covered with a first wood grain member;
The building member according to claim 2, characterized in that: The first wood bears the stress due to the load,
The building member according to any one of claims 1 to 3, characterized in that: The first wood has a fireproof coating function,
The building member according to any one of claims 1 to 4, characterized in that: The third wood arranged in the second region is
Both-ends lumber located on both end sides of the building member;
Opposite side wood located on the opposite side to the both end sides;
including
The opposite side wood is placed in the second area after the both end side wood is placed in the second area,
The building member according to any one of claims 1 to 5, characterized in that: Further comprising a covering member covering the first wood,
The covering member has a fireproof function,
The building member according to any one of claims 1 to 6, characterized in that: The covering member is
a flammable layer located on the outer peripheral surface side;
a burning stop layer located inside the burning margin layer;
comprising
The building member according to claim 7, characterized in that: further comprising a second wood grain member disposed between the first wood and the structure;
The building member according to any one of claims 1 to 8, characterized in that: further comprising insulation covering the web and the first flange;
The building member according to any one of claims 1 to 9, characterized in that: The density of the first wood is 0.4 g/cm ³ or more,
The building member according to any one of claims 1 to 10, characterized in that: The first wood is wood impregnated with an incombustible chemical solution,
The building member according to any one of claims 1 to 10, characterized in that:

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