JP6989194B1 - T-shaped steel frame for beam material and hybrid beam material of steel frame and wood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a T-shaped steel frame for a beam material which has a small environmental load and can be appropriately manufactured according to various specifications with respect to a T-shaped steel frame which can be used to construct a hybrid beam material having higher fire resistance more rationally. And a hybrid beam material of steel frame and wood. SOLUTION: A vertical plate portion 20 which is a long flat plate-shaped steel material constituting a core portion of a beam material and has a long cross-sectional shape in the vertical direction so as to form a web, and a long flat plate constituting the upper surface of the beam material. A T-shaped steel frame 10 for a beam material whose cross-sectional shape is formed in a T-shape by a horizontal plate portion 30 which is a shaped steel material and whose cross-sectional shape is long in the lateral direction so as to form a flange. In the plurality of grooves 31 provided by opening in the horizontal plate portion 30 in a slit shape at intervals, a plurality of grooves 23 provided on the upper edge side of the vertical plate portion 20 corresponding to the grooves 31 are provided. By being fitted, the vertical plate portion 20 and the horizontal plate portion 30 are fixedly provided. [Selection diagram] FIG. 7

Description

The present invention is a long flat plate-shaped steel material that constitutes the core of the beam material, and has a vertical plate portion having a long cross-sectional shape in the vertical direction so as to form a web, and a long flat plate shape that constitutes the upper surface of the beam material. The present invention relates to a T-shaped steel frame for a beam material having a cross-sectional shape formed into a T-shape by a horizontal plate portion having a cross-sectional shape long in the lateral direction so as to form a flange, and a hybrid beam material of a steel frame and wood.

Conventionally, the hybrid beam material of steel frame and wood is made of laminated wood, and the wood member that secures the coating thickness according to the heating time is used as the fireproof coating of the steel frame member that is the structural material such as columns and beams. Therefore, it is possible to realize a steel-framed fire-resistant coating with a fire-resistant coating material made of wood members (glulam), and it is possible to easily realize fire-resistant structure and wood conversion of a building at the same time without waste, thus shortening construction time and reducing costs. The use of wood as a fireproof coating material can be utilized in new fields, the range of utilization of forest resources can be expanded, the forestry industry can be activated, and CO ₂ can be reduced (Patent Document 1). Things have been proposed.

Japanese Unexamined Patent Publication No. 2013-11063 (page 1)

The problem to be solved with respect to the T-shaped steel frame for the beam material and the hybrid beam material of the steel frame and wood has been improved in fire resistance by using H-shaped steel and arranging wood around it. Although it has been proposed, there has been no proposal for a hybrid beam material that can be constructed more rationally and appropriately as a hybrid beam material with wood using a T-shaped steel frame, and the T-shaped steel frame has a small environmental load and various specifications. It is that there is no proposal that can be manufactured in response to the above.

Therefore, an object of the present invention is to provide a T-shaped steel frame that can be used to construct a hybrid beam material having higher fire resistance more rationally, for a beam material that has a small environmental load and can be appropriately manufactured according to various specifications. It is an object of the present invention to provide a T-shaped steel frame and a hybrid beam material of a steel frame and wood.

The present invention comprises the following configurations in order to achieve the above object.
According to one form of the T-shaped steel frame for the beam material according to the present invention, it is a long flat plate-shaped steel material constituting the core portion of the beam material, and the cross-sectional shape is long in the vertical direction so as to form a web. For beam materials whose cross-sectional shape is formed in a T-shape by a horizontal plate portion which is a long flat plate-shaped steel material constituting the plate portion and the upper surface of the beam material and whose cross-sectional shape is long in the lateral direction so as to form a flange. In the T-shaped steel frame of the above, a plurality of grooves provided in the horizontal plate portion by opening in a slit shape at intervals in the long direction, and above the vertical plate portion corresponding to the grooves. The vertical plate portion and the horizontal plate portion are fixedly provided by fitting a plurality of grooves provided on the edge side.

According to one form of the T-shaped steel frame for a beam material according to the present invention, the mortise has a protrusion that penetrates the mortise and protrudes from the upper surface of the horizontal plate portion, and a slit is formed in the protrusion of the mortise. A fixing insertion hole provided by opening in a shape is provided, and is inserted into the fixing insertion hole and is positioned and fixed on the upper side of the horizontal plate portion arranged on the upper edge side of the vertical plate portion. This makes it possible to provide a fixing member for fixing the horizontal plate portion so as not to separate from the vertical plate portion.

According to one form of the T-shaped steel frame for a beam material according to the present invention, the center of the upper edge of the vertical plate portion in the longitudinal direction is formed in an arch shape curved to the uppermost side. be able to.
According to one form of the T-shaped steel frame for a beam material according to the present invention, a plurality of lightweight through holes for reducing the weight are provided in the vertical plate portion in the long direction of the T-shaped steel frame. It can be characterized by being.
According to one form of the T-shaped steel frame for a beam material according to the present invention, a plurality of stud gibber is fixed to the upper surface of the horizontal plate portion.

According to one form of the hybrid beam material of steel frame and wood according to the present invention, it is a hybrid beam material of steel frame and wood using the T-shaped steel frame for the beam material, and the long direction in the T-shaped steel frame. The vertical plate portion, which is a portion excluding both end portions and the upper surface side of the horizontal plate portion, may be provided with a surrounding wood portion provided so as to cover and enclose the vertical plate portion.

According to one form of the hybrid beam material of steel frame and wood according to the present invention, the surrounding wood portion is provided in two layers, an inner wood layer and an outer wood layer, and the inner wood layer and the outer wood. It can be characterized in that a non-combustible material layer is arranged between the layers.

According to the T-shaped steel frame for the beam material and the hybrid beam material of the steel frame and the wood according to the present invention, the environmental load of the T-shaped steel frame that can be used to form the hybrid beam material having higher fire resistance more rationally. It has a special advantageous effect that it can be manufactured in a small size and can be manufactured appropriately according to various specifications.

It is sectional drawing which shows the morphological example of the hybrid beam material of a steel frame and wood which concerns on this invention. It is (a) front view and (b) end view which shows the morphology example of the T-shaped steel frame which can be used for the morphology example of FIG. It is (a) front view and (b) end view which shows the other form example of the T-shaped steel frame which can be used for the form example of FIG. It is (a) front view and (b) end face view which shows the morphological example of the T-shaped steel frame (mortise assembly structure) for the beam material which concerns on this invention. FIG. 4 is an enlarged view of a portion (right end portion) of FIG. FIG. 4 is a cross-sectional view taken along the line AA of FIG. It is a partial exploded view of the form example of FIG. It is (a) front view and (b) end face view which shows the morphological example of the hybrid beam material of the steel frame and wood using the T-shaped steel frame (the hozo assembly structure) which concerns on this invention. It is sectional drawing which shows the morphological example of the hybrid beam material of a steel frame and wood using the T-shaped steel frame (the hozo assembly structure) which concerns on this invention. It is sectional drawing which shows the use state of the form example of the hybrid beam material of a steel frame and wood which concerns on this invention.

Hereinafter, morphological examples of the T-shaped steel frame for the beam material and the hybrid beam material of the steel frame and wood according to the present invention will be described in detail with reference to the drawings (FIGS. 1 to 10).

As shown in FIGS. 1 and 9, the steel-frame and wood hybrid beam material according to the present invention is a long flat plate-shaped steel material constituting the core of the beam material and has a cross-sectional shape so as to form a web. The cross-sectional shape is T-shaped due to the vertical plate portion 20 that is long in the vertical direction and the horizontal plate portion 30 that is a long flat plate-shaped steel material constituting the upper surface of the beam material and has a long cross-sectional shape in the horizontal direction so as to form a flange. A T-shaped steel frame 10 for a beam material formed in the above, and a vertical plate portion 20 which is a portion of the T-shaped steel frame 10 excluding both ends in the long direction and the upper surface side of the horizontal plate portion 30 are included. It is provided with a surrounding timber portion 50 provided so as to cover it. It should be noted that this steel frame and wood hybrid beam material is used by being attached to the steel frame column by a fastening means using the attachment holes 11 to the steel frame column provided at both ends in the long direction.

According to the present invention, the T-shaped steel frame is used to obtain a particularly advantageous effect of being able to construct a more rationally high fire resistance hybrid beam material of steel frame and wood. That is, according to the hybrid beam material of steel frame and wood of the present invention, since the T-shaped steel frame 10 is used, it is lower than the case where the hybrid beam material of steel frame and wood is constructed by using the conventional H-shaped steel. The surrounding wood portion 50 according to the present invention has a simpler form than the conventional surrounding wood portion formed so as to cover the lower flange thereof. Since there is no lower flange portion, the surrounding wood portion 50 can sufficiently cover the vertical plate portion 20 in a sufficiently thick and suitable manner, so that the fire resistance can be improved.

In other words, in the event of a fire, the beam material is easily damaged by being roasted by the flame around the lower corners, the fire spreads if it is composed only of wood, and the temperature is high if it is composed only of steel frame. Easy to be exposed and deformed. On the other hand, in the steel frame and wood hybrid beam material according to the present invention, the surface of the surrounding wood portion 50 is damaged, but the T-shaped steel frame 10 including the internal vertical plate portion 20 is in the case of H-shaped steel. In comparison, it is more rationally protected by the surrounding timber portion 50 and is less likely to be damaged, and the structural strength of the building can be maintained. In the case of H-section steel, the heat of the fire is easily transferred to the lower flange, which tends to cause damage. Therefore, according to the steel-frame hybrid beam material using the T-shaped steel frame according to the present invention, the steel-framed structure of the T-shaped steel frame makes it possible to realize a building with a long span and improve its fire resistance. can.

Further, as a method for manufacturing the T-shaped steel frame 10 according to the present invention, as will be described later, the steel plates constituting the vertical plate portion 20 and the horizontal plate portion 30 are fixed and integrated without rolling molding or welding. A method of rolling can be used. However, as the T-shaped steel frame 10, the conventional method for manufacturing T-shaped steel is not excluded, and it goes without saying that those manufactured by rolling molding or welding can be used.

According to the T-shaped steel frame 10 of this embodiment, the plate thickness of the vertical plate portion 20 (web) is set to be thicker than that of the H-shaped steel. According to the T-shaped steel frame 10, although it is T-shaped and has a simpler form than the H-shaped steel, it is possible to appropriately obtain the strength to receive a vertical load (vertical load). For example, a steel plate having a thickness of 25 mm or 28 mm can be used as the vertical plate portion 20 of the T-shaped steel frame 10 of the present embodiment, and a steel plate having a thickness of 9 mm or 12 mm can be used as the horizontal plate portion 30. can.

Further, in this embodiment, as shown in FIGS. 1 and 9, the surrounding wood portion 50 is provided in two layers, an inner wood layer 51 and an outer wood layer 52. According to this, the fire resistance can be improved, and the outer wood layer 52 can be replaced as appropriate.

Further, in the morphological examples shown in FIGS. 1 and 9, the fire resistance is further improved by interposing the noncombustible material layer 53 in the surrounding wood portion 50. That is, the surrounding wood portion 50 is provided in two layers, the inner wood layer 51 and the outer wood layer 52, and the noncombustible material layer 53 is arranged between the inner wood layer 51 and the outer wood layer 52. Intervened. The non-combustible material layer 53 of this embodiment is a plate-shaped member (mortar plate) formed of mortar, and is provided in a form of being fitted into a recess or groove formed in the inner wood layer 51. In this embodiment, a mortar plate is used as the non-combustible material layer 53, but the present invention is not limited to this, and it goes without saying that a highly non-combustible material can be appropriately and selectively used. Further, by using laminated lumber with less warpage or deviation as the surrounding timber portion 50, it is possible to more appropriately construct a hybrid beam material of steel frame and timber.

Further, as shown in FIGS. 1 and 9, the method of fixing the surrounding wood portion 50 to the T-shaped steel frame 10 of this embodiment and the method of incorporating the surrounding wood portion 50 including the noncombustible material layer 53 include bolts 12 and nuts. Of course, it is possible to appropriately selectively use the fastening means by the 13 and the washer 14, the fixing means and the joining means such as the wood screw 55 and the nail, or the adhesive, and the incorporating form using the unevenness and the groove. The outer wood layer 52 also functions as a decorative board, and can be appropriately replaced by using the wood screws 55 in this embodiment.

In the embodiment of FIG. 1, the inner wood layer 51 is fitted into the T-shaped steel frame 10, fixed by a fastening member composed of bolts 12, nuts 13, and washers 14, and the noncombustible material layer 53 is fitted. The inner wood layer is interposed by the wood screws 55 so that the outer wood layer 52 temporarily fixed by the adhesive is interposed between the outer wood layer 52 by contacting the outer surface of the inner wood layer 51 with the side of the noncombustible material layer 53. It is fixed to 51. As shown in FIGS. 1 and 4, bolt holes 25 through which bolts 12 can be inserted are provided in the vertical plate portion 20 of the T-shaped steel frame 10 at appropriate intervals.

Further, in the T-shaped steel frame 10 that can be used for the hybrid beam material of the steel frame and the wood according to the present invention, as shown in FIG. 2, in the longitudinal direction at the upper edge of the vertical plate portion 20 (T-shaped steel frame 10). The center is formed in an arch shape curved to the uppermost side. That is, as shown in FIG. 2, the center (Y) of the upper edge of the T-shaped steel frame 10 with respect to the straight line (horizontal straight line) connecting the X points and the X'points at the upper corners of both ends of the T-shaped steel frame 10. The points) are arched and curved (bulged) upward. In this embodiment, the center of the lower edge of the vertical plate portion 20 in the longitudinal direction (the point of the lower edge directly below the Y point) is formed in an arch shape curved to the uppermost side. Therefore, in this embodiment, the vertical width of the vertical plate portion 20 is provided to be the same width over the entire length of the vertical plate portion 20 in the longitudinal direction. Not limited to this, even if the lower edge of the vertical plate portion 20 is provided flat in the longitudinal direction thereof, the vertical load can be appropriately received.

As for the size of the arch-shaped curve, for example, when the length from the X point to the X'point is 6000 mm, the distance from the line segment to the upwardly bulging Y point can be set to about 10 mm. According to this, the vertical load applied to the T-shaped steel frame 10 can be appropriately received, and due to the deflection caused by the vertical load, the upper surface of the T-shaped steel frame 10 and the lower surface in this embodiment (vertical plate portion 20). The lower edge) can be adjusted to flatten. In FIGS. 2 and 3, the description of the bolt holes 25 used for fixing the surrounding wood portion 50 to the T-shaped steel frame 10 is omitted, but as shown in FIG. 4, the bolt holes 25 are connected to each other. Of course, the interval, quantity, etc. can be selectively set according to the specifications.

Further, in the T-shaped steel frame 10 that can be used for the hybrid beam material of the steel frame and the wood of this embodiment, as shown in FIG. 3, the vertical plate portion 20 has a lightening through hole 21 for reducing the weight. , A plurality of T-shaped steel frames 10 are provided in the long direction.

According to the embodiment shown in FIG. 3, the lightening through holes 21 are provided in a shape with rounded corners based on an equilateral triangle. According to this, the stress concentration due to the square notch can be avoided, and the truss structure allows the vertical load to be rationally received. That is, the shape is such that the structural strength can be maintained and the weight can be appropriately reduced.

Further, as the T-shaped steel frame 10 for the beam material according to the present invention, as shown in FIGS. 4 to 7, a plurality of T-shaped steel frames 10 provided by opening in the horizontal plate portion 30 in a slit shape at intervals in the long direction. The vertical plate portion 20 and the horizontal plate portion 30 are fixed by fitting a plurality of grooves 23 provided on the upper edge side of the vertical plate portion 20 corresponding to the mortise hole 31 into the mortise hole 31. It is possible to adopt the one that is provided integrally with. The mortise 23 and the mortise 31 provided in the steel material (vertical plate portion 20 and horizontal plate portion 30) can be appropriately formed by a known cutting means such as plasma cutting.

According to this, since the tenon 23 fits into the mortise hole 31, the vertical plate portion 20 and the horizontal plate portion 30 are mutually regulated in the long direction and the horizontal direction, and the vertical plate portion 20 and the horizontal plate portion 20 are mutually regulated. The unit 30 can be appropriately integrated. If the mortise 23 is simply fitted into the mortise hole 31, the mortise 23 is detached in the vertical direction. Therefore, a means for preventing the detachment as described later is required. Of course, the fixing means such as screwing, caulking, brazing, and welding can be appropriately and selectively used without limitation.

Further, in the T-shaped steel frame for the beam material of the present embodiment, the tenon 23 is provided with a protruding portion 23a that penetrates the tenon 31 and protrudes from the upper surface of the horizontal plate portion 30, and a slit is provided in the protruding portion 23a of the tenon 23. A fixing insertion hole 24 provided by opening in a shape is provided, and is positioned above the horizontal plate portion 30 which is inserted through the fixing insertion hole 24 and arranged on the upper edge side of the vertical plate portion 20. A fixing member 40 for fixing the horizontal plate portion 30 so as not to separate from the vertical plate portion 20 by being fixed is provided.

According to this, the T-shaped steel frame 10 for the beam material can be constructed without using a manufacturing method that requires a large amount of energy such as rolling molding and welding, so that the environmental load is small and heat is not applied, so that the steel frame 10 is deformed. There is no need to correct the deformation. Therefore, there is an advantage that various specifications of the T-shaped steel frame 10 for a beam material can be easily met and an optimum form can be easily manufactured.

As shown in FIG. 7, the specific shape of this embodiment corresponds to the mortise 23 in which the mortise 31 of the horizontal plate portion 30 corresponds to the convex portion of the uneven portion formed on the upper edge of the vertical plate portion 20. It is formed so as to be formed, and is provided in a long and thin rectangular slit shape (long hole shape) having a width that fits the thickness of the vertical plate portion 20. Further, in the mortise 23 corresponding to the convex portion of the vertical plate portion 20 of the present embodiment, the protruding portions 23a that cut through the mortise hole 31 and project to the upper surface side of the horizontal plate portion 30 are continuously integrated in a rectangular shape. It is provided. The fixing insertion hole 24 is formed in a rectangular slit shape (long hole shape) so that the rectangular plate-shaped fixing member 40 is inserted. The mortise 23, the mortise 31, the fixing insertion hole 24, and the fixing member 40 are not limited to a rectangular shape as in the example of the present embodiment, but may have an appropriate fitting relationship. For example, it may have an oval fitting shape with rounded corners.

Further, the receiving edge surface 22 corresponding to the bottom surface of the concave and convex concave surface formed so that the tenon 23 is provided on the upper edge of the vertical plate portion 20 receives and supports the horizontal plate portion 30 fitted to the tenon 23. The fixing insertion hole 24 provided in the protruding portion 23a is provided at a portion on the side protruding from the receiving edge surface 22 by the thickness interval of the horizontal plate portion 30. Then, in this embodiment, the horizontal plate portion 30 and the fixing member 40 are provided with a pair of fastening holes 32 provided in the horizontal plate portion 30 at symmetrical positions with respect to the center in the width direction (left and right). Using the pair of fastening holes 42 provided in the fixing member 40 corresponding to the pair of fastening holes 32, the plates are joined together by a pair of fastening members 45 (bolts and nuts in this embodiment). It is fixed to the form. According to this, it is possible to prevent the vertical plate portion 20 and the horizontal plate portion 30 from being separated from each other in the vertical direction, and the front-back and left-right directions are regulated by the fitting relationship between the tenon 23 and the tenon hole 31. It can be rationally fixed to the vertical plate portion 20 and the horizontal plate portion 30.

Further, in this embodiment, as shown in FIGS. 6 and 7, a rectangular plate-shaped fixing member 40 is provided in a relatively long form on the left and right, and an insertion hole 24 for fixing the vertical plate portion 20 is provided. The distance between the pair of fastening members 45 (bolts and nuts in this embodiment) arranged symmetrically with the portion inserted into the center position is set to be relatively long enough to allow the fixing member 40 to bend. Has been done. According to this, the fitting relationship between the vertical plate portion 20 and the horizontal plate portion 30 by the mortise 23 and the mortise hole 31, and the fixing inserted so as to be located above the horizontal plate portion 30 and the horizontal plate portion 30. It cannot be easily assembled without a slight backlash (play) in the fitting relationship and positional relationship with the member 40, but the structure absorbs the slight play by bending and deforming the fixing member 40. It is provided to stabilize the mortise and tenon. That is, when a vertical load (vertical load) is applied from above the building, the horizontal plate portion 30 is pressed against the above-mentioned receiving edge surface 22 of the vertical plate portion 20 by bending the fixing member 40. It will be fixed in a state, and the horizontal plate portion 30 and the vertical plate portion 20 can be integrated into a T-shaped steel frame 10 in a structurally stable state.

Then, by using the T-shaped steel frame 10 for the beam material shown in FIGS. 4 to 7, a hybrid steel frame and wood hybrid beam material can be configured as shown in FIGS. 8 and 9. According to the embodiment shown in FIGS. 8 and 9, the protrusion 23a, the fixing member 40, and the fastening member 45 are added to the upper surface side of the horizontal plate portion 30 as compared with the embodiment shown in FIG. Although they are arranged, these configurations can be integrated with the floor slab 60, for example, as a portion to be embedded by constructing the floor slab 60 (FIG. 10). Therefore, it acts to structurally increase the strength and has no demerit. The inner wood layer 51 in the morphological examples shown in FIGS. 9 and 10 of the surrounding wood portion 50 has a half-split structure divided into left and right, and a vertical plate is formed on the inner step portion of the inner wood layer 51. The portion 20 is fitted so that the manufacturing cost of the inner wood layer 51 can be reduced.

Further, in the steel frame and wood hybrid beam material of this embodiment, as shown in FIG. 10, a plurality of stud gibber 61s are fixed to the upper surface of the horizontal plate portion 30 (flange of the T-shaped steel frame 10). Since the stud gibber 61 can be provided in this way, the floor slab 60 can be appropriately constructed. As a result, a building with high structural strength can be appropriately constructed.

That is, by fixing the deck plate 62 to the upper surface of the horizontal plate portion 30 of the hybrid beam material of the steel frame and the wood of this embodiment, the deck plate 62 can be arranged between the beam materials, and the horizontal plate portion 30 can be arranged. Reinforcing bars 63 can be appropriately arranged by utilizing the stud gibber 61 provided on the upper surface of the above. As a result, the concrete 65 can be appropriately placed and the floor slab 60 can be appropriately constructed, and a building having high structural strength can be appropriately constructed.

Although various examples of the present invention have been described above, the present invention is not limited to the examples of the present invention, and it goes without saying that many modifications can be made without departing from the spirit of the invention. That is.

10 T-shaped steel frame 11 Mounting hole for steel frame column 12 Bolt 13 Nut 14 Washer 20 Vertical plate part 21 Lightening through hole 22 Receiving surface 23 Hozo 23a Protruding part 24 Insertion hole for fixing 25 Bolt hole 30 Horizontal plate Part 31 Groove hole 32 Fastening hole 40 Fixing member 42 Fastening hole 45 Fastening member 50 Surrounding wood part 51 Inner wood layer 52 Outer wood layer 53 Non-combustible material layer 55 Wood screw 60 Floor slab 61 Stud gibber 62 Deck plate 63 Reinforcing bar 65 concrete

Claims (6)

It is a long flat plate-shaped steel material that constitutes the core of the beam material, and has a vertical plate portion whose cross-sectional shape is long in the vertical direction so as to form a web, and a long flat plate-shaped steel material that constitutes the upper surface of the beam material. It is a T-shaped steel frame for a beam material whose cross-sectional shape is formed in a T-shape by a horizontal plate portion whose cross-sectional shape is long in the lateral direction so as to form a flange.
A plurality of mortises provided on the upper edge side of the vertical plate portion corresponding to the mortise holes are provided in a plurality of mortise holes provided in the horizontal plate portion in a slit shape at intervals in the long direction. By being fitted, the vertical plate portion and the horizontal plate portion are fixedly provided .
A T-shaped steel frame for a beam material, wherein the center of the upper edge of the vertical plate portion in the longitudinal direction is formed in an arch shape curved to the uppermost side. The mortise has a protrusion that penetrates the mortise and protrudes from the upper surface of the horizontal plate portion, and the protrusion of the mortise is provided with an insertion hole for fixing provided by opening in a slit shape. The horizontal plate portion is fixed so as not to separate from the vertical plate portion by being inserted into the insertion hole for the vertical plate portion and being positioned and fixed above the horizontal plate portion arranged on the upper edge side of the vertical plate portion. The T-shaped steel frame for a beam material according to claim 1, further comprising a fixing member. The T-shaped steel frame for a beam material according to claim 1 or 2, wherein a plurality of stud gibber is fixed to the upper surface of the horizontal plate portion. It is a long flat plate-shaped steel material that constitutes the core of the beam material, and has a vertical plate portion whose cross-sectional shape is long in the vertical direction so as to form a web, and a long flat plate-shaped steel material that constitutes the upper surface of the beam material. It is a T-shaped steel frame for a beam material whose cross-sectional shape is formed in a T-shape by a horizontal plate portion whose cross-sectional shape is long in the lateral direction so as to form a flange.
A plurality of mortises provided on the upper edge side of the vertical plate portion corresponding to the mortise holes are provided in a plurality of mortise holes provided in the horizontal plate portion in a slit shape at intervals in the long direction. In a steel frame and wood hybrid beam material using a T-shaped steel frame for a beam material in which the vertical plate portion and the horizontal plate portion are fixedly provided by being fitted.
The T-shaped steel frame is provided with a surrounding wood portion provided so as to cover and enclose both ends in the long direction and the vertical plate portion which is a portion excluding the upper surface side of the horizontal plate portion.
The surrounding wood portion is provided in two layers, an inner wood layer and an outer wood layer, and a non-combustible material layer is arranged between the inner wood layer and the outer wood layer. Hybrid beam material of steel frame and wood. The mortise has a protrusion that penetrates the mortise and protrudes from the upper surface of the horizontal plate portion, and the protrusion of the mortise is provided with an insertion hole for fixing provided by opening in a slit shape. The horizontal plate portion is fixed so as not to be separated from the vertical plate portion by being inserted into the insertion hole for the vertical plate portion and being positioned and fixed on the upper side of the horizontal plate portion arranged on the upper edge side of the vertical plate portion. The steel frame and wood hybrid beam material according to claim 4, further comprising a fixing member. The hybrid beam material of a steel frame and wood according to claim 4 or 5, wherein a plurality of stud gibber is fixed to the upper surface of the horizontal plate portion.

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