JP4186371B2 - Connecting structure of beams and joists - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection structure between a beam and a joist.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a technique for attaching a shape steel joist to a beam, for example, a technique for fixing a joist to a beam using a connecting hardware as disclosed in JP-A-11-181939 is known. In this prior art, a structure is adopted in which one end of the connecting hardware is fixed to the joist and the other end is placed and fixed on the upper surface of the beam.
[0003]
[Problems to be solved by the invention]
However, the above prior art has the following problems.
First, since it is a structure in which the connecting hardware is placed and fixed on the upper surface of the beam, when a floor base material such as a structural plywood is attached to the upper surface of the joist, the connecting hardware is placed between the beam and the floor base material. A gap corresponding to the thickness is generated. As a result, the adhesion between the beam and the floor base material becomes insufficient, and the beam and the floor base material are not sufficiently integrated. Therefore, the in-plane shear rigidity and proof stress, which are typical structural performance of the floor, are It is considered to be significantly inferior to the case where the floor base material is in close contact and fully integrated, which is clearly disadvantageous in terms of seismic performance.
[0004]
Further, due to the gap, there is a possibility that floor noise or creaking sound may occur. In order to fill such a gap, it is necessary to spread wood, a steel plate, or the like having a thickness corresponding to the thickness of the connecting hardware over the entire gap portion on the beam.
An object of the present invention is to solve the above-described problems of the prior art and provide a connection structure between a beam and a joist that does not cause the above-described gap between the beam and the floor base material. To do.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, the connection structure of the beam and joist according to claim 1 of the present invention is a connection structure for connecting the beam and the joist made of shaped steel through the connection hardware, and the connection hardware is fixed to the joist. The beam has a first connecting portion and a second connecting portion fixed to the beam, and the beam is continuous with the side surface on the side connecting the joists and has a depth equal to or greater than the thickness of the second connecting portion. The second connecting portion is fixed in the seat carved portion, and the lower surface of the upper flange of the section steel constituting the joist is connected to the first connecting portion. It is fixed or placed.
[0006]
Further, the connecting structure of the beam and joist according to claim 2 of the present invention is the connecting structure of the beam and joist according to claim 1, wherein the connecting hardware is a flat plate shape, and the seat carved portion is the first structure. 2 having a depth equal to or greater than the sum of the thickness of the connecting portion and the thickness of the upper flange, and the upper surface of the beam and the upper surface of the upper flange are located at the same height. Features.
[0007]
Furthermore, the connection structure of the beam and joist according to claim 3 of the present invention is the connection structure of the beam and joist according to claim 1, wherein the connection hardware is the first connection portion and the second connection. A step portion having a step larger than the thickness of the upper flange is provided between the two portions, and the connecting portions are parallel to each other.
Furthermore, the connection structure of the beam and joist according to claim 4 of the present invention is a connection structure for connecting the beam and the joist made of shaped steel through a connection hardware, and the connection hardware is fixed to the joist. A first connecting portion that is fixed to the beam, and the two connecting portions are perpendicular to each other, and the second connecting portion is connected to the joist of the beam. The lower surface of the upper flange of the shape steel constituting the joist is fixed or placed on the first connecting portion.
[0008]
If it is a connection structure of a beam and joists of such a configuration, there will be no gap between the beam and the floor base material, and the beam and the floor base material will be in close contact and fully integrated, Excellent in-plane shear rigidity and proof stress, and high seismic performance.
In addition, since there is no gap between the beam and the floor base material, there is little risk of floor noise or creaking noise.
[0009]
In addition, in this invention, an "upper flange" means the flange located most on top when it is arrange | positioned as a joist among the flanges of a shape steel.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a connecting structure of a beam and a joist according to the present invention will be described in detail with reference to the drawings.
(First embodiment)
1-3 is a figure explaining the structure which connected the wooden beam 20 and the joist 40 comprised with the grooved steel with a lip using the connection metal fitting 10, Comprising: FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIGS. 3A and 3B are plane views of the connecting hardware 10. It is a figure and a side view.
[0011]
The connection hardware 10 is a rectangular metal plate, and has a first connection part 11 for fixing or placing the joist 40 on one side (right side in FIG. 3A) from the center in the longitudinal direction, On the left side (left side in FIG. 3A), there is a second connecting portion 12 that is fixed to the wooden beam 20. The second connecting portion 12 is provided with a plurality of holes 13 for inserting screws or the like.
[0012]
As the metal plate, a normal steel plate having a strength of 400 MPa class is often employed, but of course, a high-tensile steel plate having a strength of 500 MPa class or more may be employed.
The type and thickness of the metal plate, the diameter, the number, the interval, and the like of the holes 13 are appropriately determined in consideration of the design connection strength, and are not particularly limited in the present invention.
[0013]
On the upper surface 21 of the wooden beam 20, a seat carved portion 30, which is a rectangular recess, is provided across both side surfaces of the wooden beam 20. The width of the carved portion 30 is slightly larger than the width of the second connecting portion 12 of the connecting hardware 10, and the depth thereof is the same as the thickness 12a of the second connecting portion 12 of the connecting hardware 10 and a lip. It is the same as the total value with the thickness 41a of the upper flange 41 of the channel steel (see FIG. 2). If desired, an interposition material such as a sound insulating material or a seismic isolation material may be provided between the connecting hardware 10 (both connecting portions 11 and 12), the wooden beam 20 (the bottom surface of the carved portion 30), and the upper flange 41 of the joists 40. In this case, the depth of the carved portion 30 needs to be the same as a value obtained by adding the thickness of the interposed material to the total value. The seat carved portion 30 is basically pre-cut at a factory.
[0014]
By fitting the second connecting portion 12 of the connecting hardware 10 into such a carved portion 30 of the wooden beam 20 (the side 22 on the side connecting the joists 40 of the wooden beam 20), screws, nails, etc. The connecting hardware 10 is fixed to the wooden beam 20 by the fixing means. Next, the lip groove steel constituting the joist 40 is arranged so that the first connecting portion 11 of the connecting hardware 10 is located below the upper flange 41 of the lip groove steel. In some cases, the first connecting portion 11 is fixed to the lower surface 42 of the upper flange 41 by fixing means such as screwing or spot welding. By such a procedure, the wooden beam 20 and the joist 40 are connected at a right angle by the connecting hardware 10.
[0015]
In such a connection structure, the depth of the carved portion 30 is the sum of the thickness 12a of the second connection portion 12 of the connection hardware 10 and the thickness 41a of the upper flange 41 of the lip-shaped channel steel. 2, the connecting hardware 10 does not protrude from the upper surface 21 of the wooden beam 20, and the upper surface 21 of the wooden beam 20 and the upper surface 43 of the upper flange 41 are the same. It is high and forms a single plane.
[0016]
Then, as shown in FIGS. 1 and 2, when the floor base material 50 is placed on the wooden beam 20 and the joist 40, a gap is formed between the wooden beam 20 and the joist 40 and the floor base material 50. Instead, the wooden beams 20 and joists 40 and the floor base material 50 are brought into close contact with each other and are sufficiently integrated, so that the seismic performance of the floor is improved. Moreover, since there is no said clearance, there is little possibility that a floor noise or a creaking sound will occur.
[0017]
In addition, you may perform the fixation to the wooden beam 20 of the 2nd connection part 12 of the connection hardware 10 in either a factory or the field.
In addition, if desired, the first connecting portion 11 of the connection hardware 10 is fixed to the joists 40 at either the factory or the site, and the joists 40 to which the connection hardware 10 is fixed are attached to the wooden beams 20 at the site. A procedure opposite to the procedure may be adopted.
[0018]
(Second embodiment)
4-6 is a figure explaining the structure which connected the wooden beam 20 and the joist 40 using the connection metal fitting 10, Comprising: FIG. 4 shows the connection part of the wooden beam 20 and the joist 40 of the floor base material 50. FIG. FIG. 5 is a cross-sectional view taken along line AA of FIG. 4, FIGS. 6A, 6B, and 6C are plan views, side views, and FIG. FIG.
[0019]
The second embodiment is an example in which the tube pillar is joined to the upper surface 21 of the wooden beam 20 at a right angle to the joist 40, and a mortise 23 for joining the tube pillar is provided. Since the configuration is substantially the same as that of the first embodiment except that the shape of the seat carved portion 30 and the shape of the connecting hardware 10 are different, only the different portions will be described and the description of the same portions will be omitted. 4 to 6, the same or corresponding parts as those in FIGS. 1 to 3 are denoted by the same reference numerals as those in FIGS.
[0020]
The connection hardware 10 is a substantially T-shaped metal plate, and has a first connection portion 11 that is fixed to the joist 40 at a portion corresponding to a vertical line in the T shape (right side in FIG. 6A). In addition, the second connecting portion 12 fixed to the wooden beam 20 is provided in a portion corresponding to the horizontal line in the T-shape (left side in FIG. 6A). The second connecting portion 12 is provided with a plurality of holes 13 for inserting screws or the like.
[0021]
Further, on the upper surface 21 of the wooden beam 20, a carved portion 30 that is a rectangular recess is provided continuously to the side surface 22 on the side connecting the joists 40 of the wooden beam 20. The seat carved portion 30 is a rectangle in which a side parallel to the longitudinal direction of the wooden beam 20 forms a long side, and has a shape in which both the long side and the short side are slightly larger than those of the second connecting portion 12 that is also rectangular. . The depth is the same as in the first embodiment.
[0022]
Further, a mortise 23 for joining a tube pillar (not shown) is provided on the upper surface 21 of the wooden beam 20 so that the tube pillar can be joined at a right angle to the joist 40.
From such a configuration, similarly to the first embodiment, the connecting hardware 10 does not protrude from the upper surface 21 of the wooden beam 20, and the upper surface 21 of the wooden beam 20 and the upper surface 43 of the upper flange 41 have the same height. Then, the wooden beam 20 and the joists 40 are connected by the connecting hardware 10 (see FIG. 5). Therefore, when the floor base material 50 is placed on the wooden beam 20 and the joist 40, no gap is formed between the wooden beam 20, the joist 40 and the floor base material 50. Therefore, the same as in the first embodiment. The effect of.
[0023]
(Third embodiment)
FIGS. 7 to 9 are views for explaining a structure in which the wooden beam 20 and the joist 40 are connected using the connecting hardware 10, and FIG. 7 shows the connecting portion of the wooden beam 20 and the joist 40 as the floor base material 501. , 502 is a partially cutaway perspective view, FIG. 8 is a cross-sectional view taken along line AA of FIG. 7, FIGS. 9A, 9B, and 9C are plan views of the connecting hardware 10. It is a side view and a front view.
[0024]
In addition, 3rd embodiment is an example which provided the level | step difference in the height of the floor base material 502 mounted on the joist 40, and the floor base material 501 mounted on the wooden beam 20, Comprising: Since the configuration of the hardware 10 is substantially the same as that of the first embodiment except for the difference in the shape of the hardware 10 and the floor base materials 501 and 502 placed with the steps, only the different parts will be described and the description of the same parts will be omitted. To do. 7-9, the same code | symbol as FIGS. 1-3 is attached | subjected to the part which is the same as that of FIGS. 1-3, or corresponds.
[0025]
As shown in FIG. 9B, the connecting hardware 10 has a shape in which a rectangular metal plate is bent near the center in the longitudinal direction, and is perpendicular to the horizontal portion between two parallel horizontal portions. And has a vertical portion 15 that forms a step 15a.
Of the two horizontal portions, the lower horizontal portion (the right side in FIG. 9B) has a first connecting portion 11 on which the joists 40 are placed or fixed, and both side surfaces thereof. Are provided with flat plates 16 and 16 downward (see FIG. 9C). Note that the flat plates 16 may not be provided.
[0026]
The upper horizontal portion (left side in FIG. 9B) has a second connecting portion 12 that is fixed to the wooden beam 20. The second connecting portion 12 is provided with a plurality of holes 13 for inserting screws or the like.
Further, the step 15a of the vertical portion 15 is equal to or greater than the total value of the thickness 41a of the upper flange 41 and the thickness 50a of the floor base material 502 (see FIG. 8), and the vertical portion 15 is a constituent of the present invention. It corresponds to the step part.
[0027]
If desired, an interposition material such as a sound insulating material or a seismic isolation material may be provided between the connecting hardware 10 (both connecting portions 11 and 12), the wooden beam 20 (the bottom surface of the carved portion 30), and the upper flange 41 of the joists 40. You may interpose. In that case, the level difference 15a needs to be equal to or greater than the sum of the total value and the thickness of the intervention material.
A seat carving in which the lower surface 42 of the upper flange 41 of the lip groove steel is fixed or placed on the first connecting portion 11 of the connecting hardware 10 and the second connecting portion 12 is provided on the upper surface 21 of the wooden beam 20. If the floor base material 501 is placed on the upper surface of the wooden beam 20 by being fitted into the portion 30 and fixed, no gap is formed between the wooden beam 20 and the floor base material 501. The material 501 can be in close contact with each other to improve the earthquake resistance. Further, the upper surface 43 of the upper flange 41 is positioned below the upper surface 21 of the wooden beam 20, and the wooden beam 20 and the joist 40 are connected at a right angle by the connecting hardware 10. Note that a wooden square member 60 is fixed to the side surface 22 on the side connecting the joists 40 of the wooden beam 20 in parallel to the wooden beam 20, but the upper surface 61 and the upper surface 43 of the upper flange 41 are the same. The wooden beam 20 and the joist 40 are connected so as to have a height.
[0028]
When the floor base material 502 is placed on the joist 40 and the wooden square member 60, the upper surface 43 of the upper flange 41 of the joist 40 and the upper surface 61 of the wooden member 60 have the same height. No gap is formed between the square member 60 and the floor base material 502, and the joists 40 and the wooden square member 60 and the floor base material 502 are in close contact with each other and are sufficiently integrated, so that the seismic performance of the floor is improved. . Moreover, since there is no said clearance, there is little possibility that a floor noise or a creaking sound will occur.
[0029]
Since the step 15a of the vertical portion 15 is equal to or greater than the sum of the thickness 41a of the upper flange 41 and the thickness 50a of the floor base material 502, the floor base material 502 is above the upper surface 21 of the wooden beam 20. There is no protrusion, and a step can be provided between the floor base material 501 and the floor base material 502. For example, the height of the floor is intentionally changed, or this step is used as a boundary between tatami and flooring. Is possible.
[0030]
Here, the step 15a of the connecting hardware 10 may be any thickness that is equal to or greater than the thickness 41a of the upper flange 41, and can be determined according to the steps desired to be provided on the floor base materials 501 and 502 to be arranged. If the step 15a of the connection hardware 10 is made equal to the thickness 41a of the upper flange 41, and the depth of the seat carved portion 30 is made equivalent to the thickness 12a of the second connection part 12 of the connection hardware 10, then a wooden beam 20 and the upper surface 43 of the upper flange 41 have the same height, and the floor base materials 501 and 502 have no gap with the upper surfaces 21 and 43 of the wooden beams 20 and joists 40 as in the first or second embodiment. Can be placed.
[0031]
When the mortise 23 for joining the pipe column is provided on the upper surface 21 of the wooden beam 20 as in the second embodiment, and the pipe column is joined so as to make a right angle with the joist 40, (The floor base material 501 is not placed on the upper surface 21 of the wooden beam 20.) The connection hardware 10 may have a shape similar to that of the connection hardware 10 in the second embodiment. That is, the shape is substantially T-shaped when viewed from above (see FIG. 12A), and the portion corresponding to the vertical line in the T-shape (on the right side in FIG. 12A), It has the 1st connection part 11 fixed to the joist 40, and has the 2nd connection part 12 fixed to the wooden beam 20 in the part (left side in Fig.12 (a)) equivalent to the horizontal line in T shape. is doing. The shape of the seat carved portion 30 is the same as in the second embodiment.
[0032]
An example of such a case is shown in FIGS. FIG. 10 is a perspective view showing a connecting portion between the wooden beam 20 and the joist 40 with a part of the floor base material 50 cut away. FIG. 11 is a cross-sectional view taken along the line AA in FIG. (B) And (c) is a top view, a side view, and a front view of the connecting hardware 10. 10-12, the same code | symbol as FIGS. 7-9 is attached | subjected to the part which is the same as that of FIGS.
[0033]
In the third embodiment, as described above, the connection structure in which the joist 40 is positioned below the wooden beam 20 is illustrated, but if desired, the joist 40 is positioned above the wooden beam 20. A connecting structure may be adopted.
In that case, the connection hardware 10 has the 1st connection part 11 fixed to the joist 40 in an upper horizontal part contrary to the structure of (b) of FIG. The second connecting portion 12 is fixed to the wooden beam 20.
[0034]
(Fourth embodiment)
13-15 is a figure explaining the structure which connected the wooden beam 20 and the joist 40 using the connection metal fitting 10, Comprising: FIG. 13 shows the connection part of the wooden beam 20 and the joist 40 of the floor base material 50. FIG. FIG. 14 is a cross-sectional view taken along line AA in FIG. 13, and FIGS. 15A, 15 </ b> B, and 15 </ b> C are a plan view, a side view, and a connection hardware 10. FIG.
[0035]
In addition, 4th embodiment is an example of the connection structure which does not equip the upper surface 21 of the wooden beam 20, and is the structure substantially the same as 1st embodiment except the points from which the shape of the connection metal fitting 10 differs. Therefore, only different parts will be described, and description of similar parts will be omitted. 13 to 15, the same or corresponding parts as those in FIGS. 1 to 3 are denoted by the same reference numerals as those in FIGS.
[0036]
The connecting hardware 10 has a shape in which a rectangular metal plate is bent near the center in the longitudinal direction, and two flat plates form a right angle and have a substantially L-shape when viewed from the side. (See FIG. 15B). One of the two flat plates (horizontal flat plate in FIG. 15B) has the first connecting portion 11 fixed to the joist 40, and the other (vertical flat plate in FIG. 15B). ) Has a second connecting portion 12 fixed to the wooden beam 20. The second connecting portion 12 is provided with a plurality of holes 13 for inserting screws or the like.
[0037]
Further, the upper surface 21 of the wooden beam 20 is not provided with the seat carved portion 30 as in the above embodiments.
The second connecting portion 12 of the connecting hardware 10 is screwed to the side surface 22 of the wooden beam 20 (the side surface to which the joists 40 are connected), and the first connecting portion 11 is oriented horizontally and upward, and is secured with a nail. Fix by fixing means such as a stopper. At that time, the connection hardware 10 is fixed so that the upper surface of the first connection portion 11 of the connection hardware 10 is positioned below the upper surface 21 of the wooden beam 20 by the thickness 41 a of the upper flange 41.
[0038]
If desired, an interposition material such as a sound insulation material or an anti-seismic material may be interposed between the connection hardware 10 (both connection portions 11 and 12), the side surface 22 of the wooden beam 20, and the upper flange 41 of the joists 40. Good. In that case, the upper surface of the first connecting portion 11 of the connecting hardware 10 is positioned below the upper surface 21 of the wooden beam 20 by a value obtained by adding the thickness of the interposing material to the thickness 41a of the upper flange 41. Thus, it is necessary to fix the connecting hardware 10.
[0039]
Next, the lip groove steel constituting the joist 40 is arranged so that the first connecting portion 11 of the connecting hardware 10 is located below the upper flange 41 of the lip groove steel. In some cases, the first connecting portion 11 is fixed to the lower surface 42 of the upper flange 41 by fixing means such as screwing or spot welding. By such a procedure, the wooden beam 20 and the joist 40 are connected at a right angle by the connecting hardware 10.
[0040]
Since the connecting hardware 10 is fixed at the position as described above, as shown in FIG. 14, the upper surface 21 of the wooden beam 20 and the upper surface 43 of the upper flange 41 have the same height and form one plane. ing.
Then, as shown in FIGS. 13 and 14, when the floor base material 50 is placed on the wooden beam 20 and the joist 40, a gap is formed between the wooden beam 20 and the joist 40 and the floor base material 50. First, the wooden beam 20 and the joist 40 and the floor base material 50 are in close contact with each other and are sufficiently integrated, so that the seismic performance of the floor is improved. Moreover, since there is no said clearance, there is little possibility that a floor noise or a creaking sound will occur.
[0041]
If desired, the connecting hardware 10 may be fixed below the above position. In that case, as in the third embodiment, the upper surface 43 of the upper flange 41 is positioned below the upper surface 21 of the wooden beam 20, and it becomes possible to install two floor base materials with a step. .
If such a connection metal fitting 10 is used, it is not necessary to provide the carved portion 30 on the wooden beam 20, so that the manufacturing process of the wooden beam 20 is simplified. Moreover, since it is easy to attach the connecting hardware 10 to a desired position as described above, the mounting position (height) of the floor base material 50 can be designed freely.
[0042]
In the fourth embodiment, a connecting hardware 10 as shown in FIG. 17 may be used instead. That is, as shown in FIG. 17C, flat plates 16 are provided on both side surfaces of the first connecting portion 11 so as to face downward, and the vertical flat plate (second connecting portion 12) is laterally disposed. As shown in FIG. 17 (a), it is a connecting hardware having a substantially T-shape when viewed from above.
[0043]
An example of such a case is shown in FIGS. FIG. 16 is a perspective view showing a connection portion between the wooden beam 20 and the joist 40 with a part of the floor base material 50 cut away. FIGS. 17A, 17B, and 17C show the connection hardware 10. It is a top view, a side view, and a front view. 16 and 17, the same or corresponding parts as those in FIGS. 13 and 15 are denoted by the same reference numerals as those in FIGS. 16 is the same as FIG. 14.
[0044]
(About steady rest material)
In such a connection structure between the beam 20 and the joist 40, a steadying member may be attached for the purpose of improving the performance of attenuating vertical floor vibration caused by a person walking or jumping. Examples thereof are shown in FIGS.
FIGS. 18 to 22 are examples in which a steadying material (seismic isolation material) is applied to the connection structure of the beam and joists according to the first embodiment, and (a) in each figure is a side view seen from the longitudinal direction of the wooden beam 20. It is a figure, (b) is the side view seen from the longitudinal direction (side direction of a wooden beam) of the joist 40.
[0045]
In the example of FIG. 18, a wood corner material 71 is used as a steadying material. The wooden rods 71 were fixed to the lower surface of the lower flange 45 of the joists 40 so as to be orthogonal to the joists 40, and the plural joists 40 were connected by the wooden rods 71. A plurality of timber timbers 71 are used, and among them, the timber timber 71 fixed to both ends of the joists 40 is also fixed to the side surface 22 of the timber beam 20. In addition, it is appropriate that the interval between adjacent timbers 71 is 450 mm to 2000 mm.
[0046]
Such a steady rest material is a rod-like or flat plate-like member having a predetermined strength, and is limited to a wood square material as long as it connects a plurality of joists or between joists and beams. It is not a thing.
Another example of the bar-shaped member is a section steel or the like. FIG. 19 shows an example in which a lip groove section steel 72 is used instead of the wood rod 71.
[0047]
An example of the flat member is a veneer plate, and an example thereof is shown in FIG. In the example of FIG. 20, a veneer plate 73 having a thickness of 2 to 3 mm is fixed to the lower surface of the lower flange 45 of the joist 40 and a plurality of joists 40 are connected by the veneer plate 73. In addition, as shown in FIG. 20, it may be connected by one veneer plate or may be connected by a plurality of veneer plates.
[0048]
Even in a member other than a rod-like or flat plate-like member, the effect of improving the floor vibration damping performance can be expected. An example is shown in FIGS.
FIG. 21 is an example in which a part of the web 46 of the joist 40 is fixed to the side surface 22 of the wooden beam 20 via an L-shaped metal piece 74 made of two flat plates that form a right angle. One of the two flat plates of the hardware 74 is joined to the web 46 at the end of the joist 40 directly or via an interposing material, and the other is joined to the beam 20.
[0049]
Further, FIG. 22 shows that a plurality of rectangular parallelepiped members 75 inscribed in the upper and lower flanges 41 and 45 of the joist 40, the web 46 and the lip 47 are formed by the upper and lower flanges 41 and 45, the web 46 and the lip 47 of the joist 40. This is an example of mounting in a space.
In addition, as a material of the rectangular parallelepiped member 75, wood etc. are mention | raise | lifted. The length of the joist 40 in the longitudinal direction of the rectangular parallelepiped member 75 is suitably 0.5 to 1.5 times the size of the joist, and the interval between adjacent rectangular parallelepiped members 75 is 450. It is appropriate to set it to ˜2000 mm.
[0050]
It should be noted that the steady rest material made of the L-shaped metal piece 74 and the steady rest material made of the rectangular parallelepiped member 75 may be used singly or in combination. Moreover, you may use together with the steadying material which consists of the said rod-shaped or flat-plate member.
As described above, the steady rest material has an effect of improving the damping performance of floor vibration, but when the shape steel is used instead of wood as a joist as in this embodiment, the damping performance is improved particularly. The effect on is high.
[0051]
As described above, in the connection structure of the beam and joist of the present embodiment, a seat carved portion having a predetermined depth is provided in the beam, and a connecting hardware for connecting the beam and joist is embedded in the carved portion. It is possible to make the upper surface of the upper flange of the joist at the same level as the upper surface of the beam by fixing it in the state of the floor, so that when the floor substrate is placed on the beam or joist, the floor substrate and beam There is no gap between or joists.
[0052]
As another means, the same effect can be realized by fixing the connecting hardware directly to a predetermined height position on the side surface instead of the upper surface of the beam or via an interposition material.
As a result, the beams and joists and the floor base material are in close contact and sufficiently integrated, so that the in-plane shear rigidity and proof stress of the floor are excellent and the seismic performance is high. In addition, there is little risk of floor noise and creaking sounds.
[0053]
In addition, this embodiment shows an example of this invention, and if the objective of this invention is achieved, the shape etc. of the connection metal fitting 10 will not be limited to this embodiment.
For example, in the present embodiment, the grooved steel with a lip (C-shaped steel with a lip) is exemplified as the shape steel constituting the joist, but the grooved steel (C-shaped steel without a lip), an H-shaped steel, Square steel (square steel) can be used.
[0054]
Moreover, although a wooden beam was illustrated and explained as a beam, there is no problem even with a steel beam, a steel-wood composite beam, or the like. Examples of the steel beam include H-section steel and C-section steel with back-to-back lips.
Furthermore, as a method of fixing the connecting hardware 10 (the first connecting portion 11 and the second connecting portion 12), when the mating material (beam and joist) is wooden, fixing means such as screwing and nailing, metal In the case of production, fixing means such as screwing and welding can be mentioned.
[0055]
【The invention's effect】
As described above, according to the connection structure of a beam and a joist of the present invention, there is no gap between the beam and the floor base material, and the beam and the floor base material are in close contact and fully integrated. Therefore, it is possible to improve the seismic performance of the floor.
In addition, since there is no gap between the beam and the floor base material, there is little risk of floor noise or creaking noise.
[Brief description of the drawings]
FIG. 1 is a perspective view of a connection structure between a beam and a joist according to a first embodiment.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIGS. 3A and 3B are a plan view and a side view of a connection hardware in the first embodiment. FIGS.
FIG. 4 is a perspective view of a connection structure between a beam and a joist according to a second embodiment.
5 is a cross-sectional view taken along line AA in FIG.
FIGS. 6A and 6B are a plan view, a side view, and a front view of a connecting hardware in the second embodiment. FIGS.
FIG. 7 is a perspective view of a connection structure between a beam and a joist according to a third embodiment.
8 is a cross-sectional view taken along line AA in FIG.
FIGS. 9A and 9B are a plan view, a side view, and a front view of a connecting hardware in the third embodiment. FIGS.
FIG. 10 is a perspective view of a modified example of a connection structure between a beam and a joist according to a third embodiment.
11 is a cross-sectional view taken along line AA in FIG.
FIGS. 12A and 12B are a plan view, a side view, and a front view of a connecting hardware in a modified example of the third embodiment. FIGS.
FIG. 13 is a perspective view of a connection structure between a beam and a joist according to a fourth embodiment.
14 is a cross-sectional view taken along line AA in FIG.
FIGS. 15A and 15B are a plan view, a side view, and a front view of a connecting hardware in the fourth embodiment. FIGS.
FIG. 16 is a perspective view of a modified example of a connection structure between a beam and a joist according to a fourth embodiment.
FIG. 17 is a plan view, a side view, and a front view of a connecting hardware in a modification of the fourth embodiment.
FIG. 18 is a view showing an example in which a steadying member is attached in the connection structure of a beam and joists according to the present invention.
FIG. 19 is a view showing another example when a steadying member is attached in the connecting structure of a beam and joists according to the present invention.
FIG. 20 is a view showing another example in the case where a steadying member is attached in the connection structure of a beam and a joist according to the present invention.
FIG. 21 is a view showing another example when a steadying member is attached in the connection structure of a beam and joists according to the present invention.
FIG. 22 is a view showing another example when a steadying member is attached in the connecting structure of a beam and joists according to the present invention.
[Explanation of symbols]
10 Consolidated hardware
11 1st connection part
12 Second connecting part
12a thickness
15 Vertical part
15a step
20 Wood beams
21 Top surface
22 side
30 Seat carving
40 joist
41 Upper flange
41a thickness
42 Bottom
43 Top view

Claims (4)

It is a connection structure that connects a beam and a joist made of shaped steel via a connection hardware,
The connection hardware has a first connection part fixed to the joist and a second connection part fixed to the beam,
The beam has a carved portion on the upper surface that is continuous with the side surface on the side connecting the joists and has a depth equal to or greater than the thickness of the second connecting portion;
The beam and joist characterized in that the second connecting portion is fixed in the carved portion, and the lower surface of the upper flange of the shape steel constituting the joist is fixed or placed on the first connecting portion. Connection structure with. The connecting hardware has a flat plate shape, and the seat carved portion has a depth equal to or greater than a value obtained by combining the thickness of the second connecting portion and the thickness of the upper flange, and the upper surface of the beam and the The connecting structure of a beam and joists according to claim 1, wherein the upper surface of the upper flange is located at the same height. The connection hardware includes a step portion having a step larger than the thickness of the upper flange between the first connection portion and the second connection portion, and the both connection portions are parallel to each other. The connection structure of a beam and a joist according to claim 1 characterized by the above-mentioned. It is a connection structure that connects a beam and a joist made of shaped steel via a connection hardware,
The connection hardware has a first connection portion fixed to the joist and a second connection portion fixed to the beam, and both the connection portions are at right angles,
The second connecting portion is fixed to a side surface of the beam on the side connecting the joists, and the lower surface of the upper flange of the shape steel constituting the joists is fixed or placed on the first connecting portion. A connecting structure of beams and joists characterized by

Images