Floor beam support material, and connection structure between floor beam and foundation

Abstract

To provide a floor receiving material for canceling concentration of anchor bolts on the top end face of foundation, and a connection structure of the floor beam with the foundation.SOLUTION: A floor receiving material 30 connects a floor beam 50 to foundation 10, while supporting the floor beam 50 of a steel structure, and has an abutting piece 31 abutting on a side face 12 of the foundation 10, locking pieces 32 extended to the foundation 10 side from a back face of the abutting piece 31 and locked to a top end 11 of the foundation 10, and a support piece 33 extended to an opposite side of the foundation 10 from a front face of the abutting piece 31 to support the floor beam 50. First bolt holes 34 are opened to the abutting piece 31, and the abutting piece 31 is fixed to the side face 12 via first bolts 41 inserted into the first bolt holes 34. Second bolt holes 35 are opened to the support piece 33, and positioned with a third bolt hole 52 of the floor beam 50 of the steel structure, and the support piece 33 and the floor beam 50 are fixed via second bolts 42 inserted into both bolt holes.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a floor beam support member and a connection structure between a floor beam and a foundation.

Background Art

[0002] In a structure where a floor beam is connected to a foundation such as a mat foundation through a mounting jig (floor beam support member) and a floor material (such as a floor surface material or a floor panel material) is supported by a plurality of floor beams, various types of floor beam support members are applied to connect the floor beam and the foundation.

[0003] For example, Patent Document 1 proposes a floor beam support member (here, a beam support fitting for a mat foundation) having a U-shaped main body installed across a mat foundation and beam receivers that bend laterally at both lower ends of the main body. A beam support fitting for a mat foundation is installed so as to straddle the mat foundation, a base plate of a steel column is placed on the beam support fitting for a mat foundation, and in a state where an anchor bolt is inserted through corresponding bolt holes of both the beam support fitting for a mat foundation and the base plate, a structure in which a floor beam is received by the beam receiver is described.

[0004] On the other hand, Patent Document 2 proposes a mounting fitting having a Z-shaped support body in which an upper piece is welded to a steel base and a lower piece supports a floor beam. The mounting fitting is fixed to the base by an anchor bolt penetrating the upper piece of the base and the support body, and the floor beam is placed on the lower piece and joined with bolts.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] By applying the beam support fittings and mounting fittings for strip foundations described in Patent Documents 1 and 2, it is possible to reliably and accurately connect the foundation or sill plate to the floor beams. However, both the beam support fittings and mounting fittings for strip foundations described in Patent Documents 1 and 2 have the problem that anchor bolts tend to concentrate on the top surface of the foundation or sill plate, and if anchor bolts for fixing steel columns are included, the number of anchor bolts is even more concentrated on the top surface.

[0007] This invention has been made in view of the above problems, and aims to provide a floor beam support member and a connection structure between the floor beam and the foundation that can eliminate the concentration of anchor bolts on the top surface of the foundation. [Means for solving the problem]

[0008] To achieve the above objective, one embodiment of the floor beam support material according to the present invention is: A floor beam support member that connects a steel-framed floor beam to a foundation, while supporting the floor beam. A contact piece that abuts against the side surface of the aforementioned foundation, A locking piece extends from the back surface of the contact piece toward the foundation and is locked to the top surface of the foundation, The abutment piece has a support piece that extends from the front surface of the abutment piece toward the opposite side of the foundation and supports the floor beam, A first bolt hole is provided in the contact piece, and the contact piece is fixed to the side surface of the foundation via a first bolt inserted through the first bolt hole. The support piece is characterized in that a second bolt hole is provided in it, which is aligned with a third bolt hole in the steel-framed floor beam, and the support piece and the floor beam are fixed together via the second bolt inserted through both bolt holes.

[0009] According to this embodiment, the foundation has a contact piece that abuts against the side surface of the foundation, a locking piece that locks to the top surface of the foundation, and a support piece that supports the floor beam. By fixing the contact piece to the side surface of the foundation, it is possible to eliminate the concentration of bolts (anchor bolts) that fix the floor beams and columns to the top surface of the foundation. Here, the foundation includes various types of foundations, such as reinforced concrete strip foundations and steel frame foundations (sill plates). The floor beams include steel beams made of H-shaped steel or square steel pipes, as well as reinforced concrete precast beams.

[0010] Furthermore, in another embodiment of the floor beam support material according to the present invention, The first bolt hole is an elongated hole extending in the vertical direction, and is characterized by forming a means for adjusting the vertical position of the contact piece with respect to the foundation.

[0011] According to this embodiment, the first bolt hole provided in the abutment piece is an elongated hole, and this elongated hole forms a means for adjusting the vertical position of the abutment piece relative to the foundation. This makes it possible to adjust the overall vertical (e.g., vertical) position of the floor beam support member, including the abutment piece, on site. This allows for easy and highly accurate connection of the foundation and the floor beam via the floor beam support member, even when there are construction tolerances for the foundation or manufacturing tolerances for the floor beam support member.

[0012] Furthermore, in another embodiment of the floor beam support material according to the present invention, The second bolt hole is an elongated hole extending in a lateral direction perpendicular to the longitudinal direction of the floor beam, and is characterized in that it forms a means for adjusting the lateral position of the floor beam relative to the support piece.

[0013] According to this embodiment, the second bolt hole provided in the support piece is an elongated hole, and this elongated hole forms a means for adjusting the position of the floor beam in the lateral direction (direction perpendicular to the longitudinal direction of the floor beam) relative to the support piece. As a result, even if there are manufacturing tolerances for the floor beam or for the floor beam support material including the support piece, the foundation and the floor beam can be easily and accurately connected via the floor beam support material.

[0014] Furthermore, in another embodiment of the floor beam support material according to the present invention, An intervening piece is provided between the support piece and the floor beam. The intervening piece is characterized by having a fourth bolt hole that is larger in diameter than the second bolt hole and the third bolt hole, and by having a bolt guide means for when there is an intersection between the second bolt hole and the third bolt hole, which guides the insertion of the second bolt into the second bolt hole and the third bolt hole.

[0015] According to this embodiment, the fourth bolt hole in the intervening piece interposed between the support piece and the floor beam is larger in diameter than the second bolt hole in the support piece and the third bolt hole in the floor beam, and is located between the second bolt hole and the third bolt hole. Therefore, even if there is an intersection between the second bolt hole and the third bolt hole in the floor beam, the connection between the support piece and the floor beam by the second bolt can be achieved by inserting the second bolt through the fourth bolt hole, for example, in an oblique direction.

[0016] Furthermore, in another embodiment of the floor beam support material according to the present invention, A fifth bolt hole is provided in the aforementioned locking piece. A height adjustment bolt for adjusting the height of the locking piece relative to the foundation is screwed into the fifth bolt hole, and the tip of the height adjustment bolt reacts with the top surface of the foundation, causing the entire floor beam support member, including the locking piece, to move up and down.

[0017] According to this embodiment, a height adjustment bolt for adjusting the height of the locking piece relative to the foundation is screwed into a fifth bolt hole provided in the locking piece, and the tip of the bolt takes reaction force from the top surface of the foundation, raising and lowering the entire floor beam support member, thereby making it possible to smoothly adjust the height of the floor beam, for example, while the floor beam is placed on the locking piece. Here, the height adjustment bolt may be removed and reused after the height adjustment of the floor beam is completed, or it may be left in place.

[0018] Furthermore, one embodiment of the connection structure between the floor beam and the foundation according to the present invention is: An insert nut is embedded in the side surface of the foundation. The contact piece of the floor beam receiving member abuts against the side surface, the first bolt hole and the insert nut are aligned, and they are bolted together with the first bolt. The floor beam is directly or indirectly supported by the support piece, the second bolt hole and the third bolt hole are aligned, and they are bolted together with the second bolt.

[0019] According to this aspect, the first bolt hole formed in the contact piece of the floor beam receiving member is aligned with the insert nut embedded in the side surface of the foundation, and the first bolt is inserted and bolted, so that the side surface of the foundation and the contact piece of the floor beam receiving member can be fixed simply and with high strength. Here, "the floor beam is directly or indirectly supported by the support piece" means both a form in which the floor beam is directly supported by the support piece and a form in which an intervening piece is present between the support piece and the floor beam, and thus the floor beam is indirectly supported by the support piece.

[0020] The weight acting from the floor beam is supported by the foundation via the first bolt and also supported by the foundation via the locking piece, and the load sharing ratio can be set variously depending on the size and number of the support pieces, the size and number of the first bolts, etc. However, at least the positions of the floor beam receiving member and the floor beam with respect to the foundation are fixed by the first bolt.

Effect of the Invention

[0021] As can be understood from the above description, according to the floor beam receiving member of the present invention and the connection structure between the floor beam and the foundation, the concentration of anchor bolts on the top end surface of the foundation can be eliminated.

Brief Description of the Drawings

[0022] [Figure 1] It is a diagram showing an exploded perspective view of an example of a floor beam receiving member according to an embodiment together with the foundation to which the floor beam receiving member is attached. [Figure 2] It is a perspective view showing a state in which an example of a floor beam receiving member according to an embodiment is attached to a foundation. [Figure 3]This is a schematic diagram illustrating a method for inserting the second bolt into the second and third bolt holes using an intervening piece when there is a tolerance between the second and third bolt holes. [Figure 4] Following Figure 3, this figure shows the state in which the second bolt is inserted through the second bolt hole and the third bolt hole, forming a connection structure. [Figure 5] This is a perspective view of an example of a connection structure between a floor beam and a foundation according to an embodiment. [Figure 6] This is a perspective view showing another example of a floor beam support member according to the embodiment, attached to the foundation. [Modes for carrying out the invention]

[0023] Hereinafter, an example of a floor beam support member and a connection structure between the floor beam and the foundation according to the embodiment will be described with reference to the attached drawings. In this specification and the drawings, substantially identical components may be denoted by the same reference numerals to avoid redundant explanations.

[0024] [Floor beam support member and connection structure between floor beam and foundation according to the embodiment] Referring to Figures 1 to 5, an example of a floor beam support member and a connection structure between a floor beam and a foundation according to the embodiment will be described. Here, Figure 1 is an exploded perspective view of an example of a floor beam support member according to the embodiment, showing the foundation to which the floor beam support member is attached, and Figure 2 is a perspective view showing the example of a floor beam support member according to the embodiment attached to the foundation. Figure 3 is a schematic diagram illustrating a method of inserting the second bolt through the second bolt hole and the third bolt hole using an intervening piece when there is a tolerance between the second bolt hole and the third bolt hole, and Figure 4 is a diagram following Figure 3 showing the state in which the second bolt is inserted through the second bolt hole and the third bolt hole, and the connection structure is formed. Furthermore, Figure 5 is a perspective view of an example of a connection structure between a floor beam and a foundation according to the installation form.

[0025] The floor beam and foundation connection structure 60 shown in Figure 5 is formed by fixing a floor beam support member 30 to a reinforced concrete strip foundation 10 (an example of a foundation), and then fixing a floor beam 50 to the floor beam support member 30.

[0026] Returning to Figure 1, the illustrated example shows a section of a strip foundation 10 having a predetermined length in a certain direction, and the main reinforcement bars and stirrups embedded in the concrete are omitted from the illustration. For example, a strip foundation 10 is provided in the shape of a rectangular frame in plan view, and multiple floor beams 50 are erected on a pair of strip foundations 10 extending in the longitudinal direction of the rectangle, thereby forming a floor beam support frame that supports the floor of the first floor. However, the illustration of the overall structure is omitted, and here we will describe the connection structure of the strip foundation 10 and the floor beams 50 connected via floor beam support members 30. In the following explanation, including Figure 1, the direction along the longitudinal direction of the steel column 20 is referred to as the vertical direction, and the longitudinal direction of the strip foundation 10 is referred to as the horizontal direction. The vertical direction is, for example, the vertical direction, and the horizontal direction is, for example, the horizontal direction.

[0027] The strip foundation 10 has a rectangular parallelepiped shape that is long in the longitudinal direction, and the steel column 20 is fixed to its top surface 11 via mounting brackets 21. The steel column 20 is formed from shaped steel materials such as square steel pipes or H-beams, but the steel column 20 in the illustrated example is formed from square steel pipes. The mounting bracket 21 is formed by welding multiple steel plates together in a block shape, and anchor bolts 25 are provided on the left and right sides of the vertical steel plate that separates the center (in Figure 1, one of the anchor bolts 25 is shown), and the anchor bolts 25 are fixed inside the strip foundation 10 through bolt holes (not shown) in the lower steel plate. The lower end of the steel column 20 and the steel plate above the mounting bracket 21 are joined by welding. Here, instead of the mounting bracket 21 in the illustrated example, a steel plate (base plate) may be welded to the lower end of the steel column 20, and anchor bolts may be inserted through bolt holes provided in the base plate.

[0028] The floor beam support member 30 has a contact piece 31 that abuts against the side surface 12 of the foundation 10, a locking piece 32 that extends from the back surface (the surface on the foundation 10 side) of the contact piece 31 toward the foundation 10 and locks onto the top surface 11 of the foundation 10, and a support piece 33 that extends from the front surface (the surface on the floor beam 50 side) of the contact piece 31 toward the opposite side of the foundation 10 and supports the floor beam 50, and the overall side view shape is approximately Z-shaped.

[0029] In the illustrated example, two locking pieces 32 are positioned above the back surface of the contact piece 31, at a location that sandwiches the steel column 20 when the contact piece 31 comes into contact with the side surface 12 of the foundation 10. Here, there may be one locking piece 32 or three or more.

[0030] Furthermore, the support piece 33 is attached to the lower central position on the front surface of the contact piece 31 and has a length that is necessary and sufficient to support the floor beam 50.

[0031] The contact piece 31 has two first bolt holes 34 on the left and right sides, and the first bolt holes 34 are elongated holes that extend in the vertical direction.

[0032] Two insert nuts 15 are embedded in the side surface 12 of the foundation 10, with their openings facing the side surface 12, and two first bolt holes 34 are provided in the contact piece 31 at positions corresponding to the openings of each insert nut 15.

[0033] When the abutment piece 31 is brought close to the side surface 12 of the foundation 10 in the X3 direction so that the abutment piece 31 abuts against it, and at the same time the two locking pieces 32 are locked to the top surface 11 of the foundation, the openings of each insert nut 15 and the first bolt holes 34 are aligned, and the first bolt 41 is inserted from the front of the abutment piece 31 in the X4 direction and screwed into the insert nut 15, thereby fixing the floor beam support member 30, including the abutment piece 31, to the side surface 12 of the foundation 10.

[0034] In this way, since the floor beam support member 30 is bolted to the side surface 12 of the foundation 10 rather than the top surface 11, the concentration (intertwining) of multiple anchor bolts and bolts on the top surface 11 of the foundation 10 is eliminated.

[0035] The support piece 33 has two second bolt holes 35 which are aligned with third bolt holes 52 (see Figure 3) which are located in the lower flange 51 of the floor beam 50 formed from H-shaped steel, as shown in Figure 5, and the support piece 33 and the floor beam 50 are fixed together via second bolts 42.

[0036] The second bolt 42 is inserted through the third bolt hole 52 of the lower flange 51 of the floor beam 50, then as shown in Figure 1, it is inserted through the fourth bolt hole 38 of the intervening piece 37 in the X2 direction, and then through the second bolt hole 35 of the support piece 33 in the X1 direction.

[0037] Here, the second bolt hole 35 and the third bolt hole 52 have hole diameters that allow the second bolt 42 to be screwed in. For example, as shown in Figure 3, if there is a manufacturing or construction tolerance d between the second bolt hole 35 and the third bolt hole 52, the second bolt 42 cannot be inserted through the second bolt hole 35 and the third bolt hole 52.

[0038] Therefore, as shown in Figure 3, an intervening piece 37, which has a fourth bolt hole 38 with a larger diameter than the second bolt hole 35 and the third bolt hole 52, is pre-fixed to the upper surface of the support piece 33, for example, by welding. More specifically, the support piece 33 and the intervening piece 37 are fixed to the two second bolt holes 35 with the two corresponding fourth bolt holes 38 aligned at their centers.

[0039] The relatively large diameter fourth bolt hole 38 is interposed between the second bolt hole 35 and the third bolt hole 52. As shown in Figure 3, the second bolt 42 is inserted from the diagonal direction Y2, and after guiding the tip of the second bolt 42 into the third bolt hole 52, the second bolt 42 is tightened. This causes the floor beam 50 to slide in its longitudinal direction, and as shown in Figure 4, the floor beam 50 and the support piece 33 are connected by the second bolt 42 via the intervening piece 37. Therefore, the intervening piece 37 with the fourth bolt hole 38 acts as a bolt guide when there is a tolerance d between the second bolt 42 and the third bolt hole 52, guiding the insertion of the second bolt 42 and enabling bolt connection between the two.

[0040] Returning to Figure 2, a fifth bolt hole 36 is provided in the locking piece 32, and a height adjustment bolt 43 for adjusting the height of the floor beam support member 30, including the locking piece 32, to the foundation 10 is screwed into the fifth bolt hole 36.

[0041] As shown in Figure 2, the floor beam support member 30 is temporarily fixed to the foundation 10 by loosely tightening the first bolt 41 so that it can move up and down (vertically). Then, by tightening or loosening the height adjustment bolt 43, the tip of the height adjustment bolt 43 takes reaction force from the top surface 11 of the foundation 10, and the entire floor beam support member 30, including the locking piece 32, can be raised and lowered in the Y1 direction.

[0042] During this height adjustment, the first bolt hole 34 provided in the contact piece 31 is an elongated hole extending in the vertical direction, making it possible to raise and lower the contact piece 31 within the range of the elongated hole. Therefore, the first bolt hole 34 serves as a means for adjusting the vertical position of the floor beam support member 30.

[0043] Since the height adjustment of the floor beam support member 30 is actually intended to adjust the height of the floor beam 50, in practice, with the floor beam 50 bolted to the support piece 33, the floor beam support member 30 and the floor beam 50 are raised and lowered using the height adjustment bolt 43, thereby adjusting, for example, the top surface of the floor beam 50 and the top surface 11 of the foundation 10 to be flush.

[0044] After the height of the floor beam 50 is adjusted, the first bolt 41 is tightened to fix the floor beam support member 30 to the side surface 12 of the foundation 10, and the floor beam 50 and the foundation 10 are connected via the floor beam support member 30, thereby forming the connection structure 60 shown in Figure 5.

[0045] For example, if the support piece 33 lifts off the top surface 11 of the foundation 10 due to height adjustment of the floor beam support member 30, it is advisable to fill the gap between the support piece 33 and the top surface 11 by inserting a steel wedge or the like.

[0046] As shown in Figure 2, the connection structure 60 shown in Figure 5, which is formed by fixing the floor beam 50 to the floor beam support member 30 fixed to the side surface 12 of the foundation 10, can be formed after the height and horizontal adjustment (lateral adjustment) of the floor beam 50 relative to the foundation 10 can be easily performed on site. Furthermore, as already explained, the concentration of numerous anchor bolts and bolts, including the anchor bolts 25 that fix the steel column 20, on the top surface 11 of the foundation 10 is also eliminated.

[0047] In Figure 5, after the connection structure 60 is formed, the height adjustment bolt 43 may be left in place or removed and reused.

[0048] Figure 6 is a perspective view showing another example of a floor beam support member attached to the foundation. The illustrated example differs from the configurations shown in Figures 1 and 2 in that the second bolt hole 35A in the support piece 33 is an elongated hole extending laterally and does not have an intervening piece 37. Here, the lateral direction is perpendicular to the longitudinal direction of the floor beam 50.

[0049] Because the second bolt hole 35A is an elongated hole extending laterally, the lateral position of the floor beam 50 relative to the support piece 33 can be adjusted, and therefore the second bolt hole 35A serves as a means for adjusting the lateral position of the floor beam 50.

[0050] Furthermore, other embodiments may be used in which other components are combined with the configurations listed in the above embodiments, and the present invention is not limited in any way to the configurations shown herein. In this regard, modifications can be made without departing from the spirit of the present invention, and can be appropriately determined according to the application form. [Explanation of Symbols]

[0051] 10: Foundation (strip foundation) 11: Top surface (top surface) 12: Side view 15: Insert Nut 20: Steel column 21: Mounting hardware 25: Anchor bolts 30: Floor beam support material 31: Contact piece 32: Locking piece 33: Support piece 34: First bolt hole (elongated hole) 35: Second bolt hole 35A: Second bolt hole (elongated hole) 36: Fifth bolt hole 37: Intervening piece 38: Fourth bolt hole (large diameter hole) 41: First bolt 42: Second bolt 43: Height adjustment bolt 44: Nut 50: Floor beam 51: Lower flange 52: Third bolt hole 60: Connection structure between floor beams and foundation (connection structure) d:Tolerance

Claims

1. A floor beam support member that connects a steel-framed floor beam to a foundation, while supporting the floor beam. A contact piece that abuts against the side surface of the aforementioned foundation, A locking piece extends from the back surface of the contact piece toward the foundation and is locked to the top surface of the foundation, The abutment piece has a support piece that extends from the front surface of the abutment piece toward the opposite side of the foundation and supports the floor beam, A first bolt hole is provided in the contact piece, and the contact piece is fixed to the side surface of the foundation via a first bolt inserted through the first bolt hole. A second bolt hole is provided in the support piece, which is aligned with a third bolt hole in the steel-framed floor beam, and the support piece and the floor beam are fixed together via the second bolt inserted through both bolt holes. A floor beam support member characterized in that the second bolt hole is an elongated hole extending in a lateral direction perpendicular to the longitudinal direction of the floor beam, and forms a means for adjusting the lateral position of the floor beam with respect to the support piece.

2. A floor beam support member that connects a steel-framed floor beam to a foundation, while supporting the floor beam. A contact piece that abuts against the side surface of the aforementioned foundation, A locking piece extends from the back surface of the contact piece toward the foundation and is locked to the top surface of the foundation, The abutment piece has a support piece that extends from the front surface of the abutment piece toward the opposite side of the foundation and supports the floor beam, A first bolt hole is provided in the contact piece, and the contact piece is fixed to the side surface of the foundation via a first bolt inserted through the first bolt hole. A second bolt hole is provided in the support piece, which is aligned with a third bolt hole in the steel-framed floor beam, and the support piece and the floor beam are fixed together via the second bolt inserted through both bolt holes. An intervening piece is provided between the support piece and the floor beam. A floor beam support member, characterized in that the intervening piece has a fourth bolt hole that is larger in diameter than the second bolt hole and the third bolt hole, and a bolt guide means for when there is an intersection between the second bolt hole and the third bolt hole is formed to guide the insertion of the second bolt into the second bolt hole and the third bolt hole.

3. The floor beam support member according to claim 1 or 2, characterized in that the first bolt hole is an elongated hole extending in the vertical direction, and forms a means for adjusting the vertical position of the contact piece with respect to the foundation.

4. A fifth bolt hole is provided in the aforementioned locking piece. The floor beam support member according to claim 3, characterized in that a height adjustment bolt for adjusting the height of the locking piece relative to the foundation is screwed into the fifth bolt hole, and the tip of the height adjustment bolt takes reaction force from the top surface of the foundation, causing the entire floor beam support member, including the locking piece, to move up and down.

5. An insert nut is embedded in the side surface of the foundation. The abutment piece of the floor beam support member according to any one of claims 1 to 4 is in contact with the side surface, the first bolt hole and the insert nut are aligned, and the member is bolted together with the first bolt. A connection structure between a floor beam and a foundation, characterized in that the floor beam is directly or indirectly supported by the support piece, the second bolt hole and the third bolt hole are aligned, and the two bolts are bolted together.

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