JP2017137756A - Column-beam joining structure and building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a column-beam joining structure capable of improving performance of a beam regardless of a width of a column, and capable of joining the beam having a width of the same degree as a width of the column to the column, without increasing construction labor.SOLUTION: According to a column-beam joining structure 100, since a width of a beam 3 and a width of a column 1 can be formed in the same degree, performance of the beam 3 can be improved. Particularly, an end plate 6 is formed so that a beam end joining surface part 12 joined to an end part of a beam body part 4 has a width larger than a width of the beam body part 4. Thus, when welding-joining the beam body part 4 to the beam end joining surface part 12 of the end plate 6, rotary welding can be applied along the peripheral edge of the beam body part 4, so that these end plate 6 and beam body part 4 can be joined by one-time welding work.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a beam-column joint structure including a column and a beam, and a building.

  Conventionally, in an end plate type beam-column joint structure, the width of the beam flange is smaller than the width of the column. Therefore, the beam performance is determined by the width of the column, and in order to improve the beam performance, it is necessary to review the column design itself. In order to solve such a problem, for example, a configuration shown in Patent Document 1 is known. In the column-beam joint structure shown in Patent Document 1, the width of the column and the beam is the same, and the end plate provided at the end of the beam has a width dimension and a height dimension at the end of the beam. It is equal to.

JP 2007-198066 A

  However, since the configuration of Patent Document 1 is a configuration in which the ends of the beam and the end plate are aligned, when welding the end plate to the end of the beam, welding auxiliary members such as end tabs are provided on both sides of the beam flange. There is a problem in that welding is performed after mounting, and then the operation of cutting the welding auxiliary member is required, which is troublesome. Further, when the beam is attached with a slight deviation from the column due to construction error or the like, there is a problem that the beam and the beam adjacent to the beam are mutually buffered and the beam cannot be attached.

  Therefore, the present invention provides a beam-to-column connection structure that can improve the beam performance regardless of the column width and can join a beam having the same width as the column width to the column without increasing labor. The purpose is to do.

  The column beam connection structure according to the present invention includes a column and a beam fixed to one side surface portion of the column, and the beam is fixed to the beam main body portion and the outer circumferential surface of the column. A plate-like end plate that is in surface contact, the beam main body is formed to have a width that is approximately the same as the width of the column, and the end plate includes a column contact surface that is in surface contact with the column; A beam end joining surface portion joined to the end of the beam body portion, the column contact surface portion is formed to have a width that is the same as or slightly smaller than the width of the column, and the beam end joining surface portion of the beam body portion is The end plate is formed to have a width larger than the width, and the end plate includes a pair of side fore edge parts that extend along the height direction of the beam main body part and connect these face parts. , At least a part of the column contact surface side or the beam end joint surface portion from the column contact surface side with respect to the normal of the column contact surface portion and the beam end joint surface portion The entire span is formed in a state of being inclined in a widened manner from the column contact surface side toward the beam end joint surface side, and the beam is inclined by 45 ° in the horizontal direction with respect to the normal line of each surface passing through the axis of the column. The imaginary line is attached in a state where the side edge of the end plate does not intersect.

  According to the column beam connection structure according to the present invention, the beam width and the column width can be formed to the same extent, so that the beam performance can be improved. In particular, the end plate is formed so that the beam end joint surface joined to the end of the beam body has a width larger than the width of the beam body. In a state of being in contact with the end joint portion, the beam end joint surface portion exists further to the side than the side edge of the end portion of the beam main body portion. As a result, when the beam main body is welded to the beam end joint surface portion of the end plate, the welding can be performed along the peripheral edge of the beam main body, and the end plate and the end plate can be combined in one welding operation. It can be joined to the beam body. When the beam is joined to the outer peripheral surface of the column, the beam is formed by tilting the side edge of the end plate by 45 ° in the normal direction of each surface passing through the axis of the column in the horizontal direction. It is attached so as not to intersect the virtual line. The virtual line forms a diagonal line with respect to the cross section of the column, and the beam is attached to each surface of the column without crossing the side edge of the end plate to the diagonal line. Even when the beams are joined to each surface, the beams are not buffered, and the beams can be attached to the columns regardless of the presence or absence of adjacent beams. As described above, the beam performance can be improved regardless of the column width, and a beam having the same width as the column width can be joined to the column without increasing the labor.

  In the column beam connection structure according to the present invention, the width of the column contact surface portion of the end plate is slightly smaller than the width of the column, and the side edge surface portion is 45 with respect to the normal line of the column contact surface portion and the beam end connection surface portion. It is preferable to incline at an angle of °. For example, when the inclination with respect to the normal is large, it is easy to ensure the width of the beam end joint surface portion, but the corner portion on the beam end joint surface portion side becomes thin, and it is difficult to ensure the strength. On the other hand, when the inclination with respect to the normal is small, it is easy to ensure the strength of the corner portion, but it is difficult to ensure the size of the beam end joint surface portion. In the case of 45 °, these balances can be taken.

  Further, in the column beam connection structure according to the present invention, the end plate includes an extending portion above the upper end portion of the beam main body portion and an extending portion below the lower end portion of the beam main body portion. It is preferable. According to this, since the welding joint can be performed between the extension portion and the beam main body portion, and it is possible to perform the turn welding from the side, the beam main body portion and the end plate can be connected without increasing the welding labor. This can further improve the bonding strength.

  Moreover, in the beam-column joint structure according to the present invention, it is preferable that one or both of the pair of extending portions include a joint with a column. According to this, the joint strength between the beam and the column can be improved.

  Moreover, it is preferable that the building which concerns on this invention is equipped with said column beam connection structure. According to this, there can exist an effect | action and effect similar to said column beam joining structure.

  According to the present invention, the beam performance can be improved regardless of the column width, and a beam having the same width as the column width can be joined to the column without increasing the construction labor.

It is the figure which looked at the beam-column joining structure concerning the embodiment of the present invention from the upper part. It is the figure which looked at the column beam junction structure shown in FIG. 1 from the side.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a view of a column beam joint structure 100 according to an embodiment of the present invention as viewed from above. FIG. 2 is a side view of the beam-column joint structure 100 shown in FIG. As shown in FIGS. 1 and 2, the beam-column joining structure 100 includes a column 1 formed of a square steel pipe and a beam 3 fixed to one side surface portion 2 of the column 1. The column 1 has a rectangular cross section and has side portions 2 in four directions. One beam 3 is fixed to one side part 2.

  The beam 3 includes a beam main body portion 4 made of H-shaped steel, and a plate-like end plate 6 fixed to the beam main body portion 4 and in surface contact with the outer peripheral surface 2 a of the column 1. The beam main body 4 includes a pair of upper and lower flanges 7 and 8 that extend in the horizontal direction, and a web 9 that extends in the vertical direction and connects the flanges 7 and 8. The beam main body 4 is formed to have a width approximately equal to the width of the column 1. Specifically, the dimension L1 in the width direction of the flanges 7 and 8 of the beam main body 4 is approximately the same as the dimension L2 in the width direction of the column 1. Note that the same level means that the beam body 4 according to the standard of the pillar 1 and the standard of the same width is used, and the dimension L1 and the dimension L2 are the same, or the difference is within ± 5 mm. It is assumed to be in the state.

  The end plate 6 includes a column contact surface portion 11 that comes into surface contact with the column 1 and a beam end joint surface portion 12 that is joined to an end portion of the beam main body portion 4. The end of the beam body 4 is joined to the beam end joint surface 12 of the end plate 6 by welding. A detailed description of the welding mode will be described later. The beam main body portion 4 is joined to the end plate 6 so that the center line in the width direction of the end portion substantially coincides with the center line in the width direction of the beam end joint surface portion 12 of the end plate 6. The end plate 6 is joined to the column 1 such that the center line in the width direction of the column contact surface portion 11 substantially coincides with the center line in the width direction of the outer peripheral surface 2 a of the column 1. The column contact surface portion 11 is formed to have the same size as the column 1 or a slightly smaller width. That is, the dimension L3 in the width direction of the column contact surface portion 11 is the same as or slightly smaller than the dimension L2 in the width direction of the column 1. “Slightly smaller” means that the dimension L3 is smaller than the dimension L2, and the difference is within a range of 5 mm or less. The beam end joint surface portion 12 is formed to have a width larger than the width of the beam main body portion 4. That is, the dimension L4 in the width direction of the beam end joint surface portion 12 is larger than the dimension L1 in the width direction of the flanges 7 and 8 of the beam main body portion 4. Therefore, between the both ends in the width direction of the beam end joint surface portion 12 and both ends in the width direction of the flanges 7 and 8 of the beam main body portion 4, the beam ends are more outward than the end portions of the beam main body portion 4. A widened portion 13 is formed by extending the joint surface portion 12 (see FIG. 1).

  The end plate 6 includes a pair of side edge surfaces 14 that extend along the height direction of the beam body 4 and connect the column contact surface portion 11 and the beam end joint surface portion 12. The side edge portion 14 is partially or entirely inclined with respect to the normal lines of the column contact surface portion 11 and the beam end joint surface portion 12. In this embodiment, when viewed in the thickness direction of the end plate 6, a part of the column contact surface portion 11 side is inclined with respect to the normal line (that is, inclined with respect to the column contact surface portion 11). A part of the end joint surface portion 12 side is parallel to the normal line (that is, perpendicular to the beam end joint surface portion 12).

  The beam 3 is attached to a virtual line VL in which the normal line NL of each surface 2a passing through the axis CT of the column 1 is inclined by 45 ° in the horizontal direction so that the side edge surface portion 14 of the end plate 6 does not intersect. In this embodiment, the width of the column contact surface portion 11 of the end plate 6 is slightly smaller than the width of the column 1, and the side edge surface portion 14 is 45 ° with respect to the normal line of the column contact surface portion 11 and the beam end joint surface portion 12. Is inclined at an angle of Therefore, the inclined portion of the side edge surface portion 14 is inclined by 45 ° with respect to the normal line NL and is parallel to the virtual line VL. Further, the inclined portion of the side edge surface portion 14 is spaced apart from the virtual line VL with a slight gap in a state parallel to the virtual line VL. The inclined portion of the side edge surface portion 14 of one end plate 6 and the inclined portion of the side edge surface portion 14 of another end plate 6 adjacent to the end plate 6 face each other in parallel with a gap therebetween. The virtual line VL passes through the gap. Thus, the adjacent end plates 6 are not in contact with each other.

  As shown in FIG. 2, the end plate 6 is larger in the vertical direction than the beam body 4. Therefore, the end plate 6 includes the extending portion 16 above the upper end portion (the upper surface of the upper flange 7) of the beam main body portion 4, and the lower end portion (the lower surface of the lower flange 8) of the beam main body portion 4. An extending portion 17 is provided below the lower portion. It joins so that the vertical center line of the beam main-body part 4 and the vertical center line of the end plate 6 may correspond. Therefore, the extension part 16 and the extension part 17 are equal in size in the vertical direction. Further, the end plate 6 includes a joint portion 21 with the column 1 at one or both of the pair of extending portions 16 and 17. In the present embodiment, the end plate 6 includes a pair of joining portions 21 in the upper extending portion 16 and a pair of joining portions 21 in the lower extending portion 17. The end plate 6 includes a pair of joints 21 below the upper flange 7 and a pair of joints 21 above the lower flange 8. The joining portion 21 joins the end plate 6 to the column 1 by fastening bolts and nuts.

  Next, the operation and effect of the beam-column joint structure 100 according to the present embodiment will be described.

  According to the column-beam joint structure 100 according to the present embodiment, the width of the beam 3 and the width of the column 1 can be formed to be approximately the same, so that the performance of the beam 3 can be improved. In particular, the end plate 6 is formed such that the beam end joint surface portion 12 joined to the end portion of the beam main body portion 4 has a width larger than the width of the beam main body portion 4. Accordingly, the widened portion 13 is formed further to the side than the side edge of the end portion of the beam body portion 4 in a state where the end portion of the beam body portion 4 is in contact with the beam end joint surface portion 12, and the beam end joint is formed. The surface portion 12 is present. As a result, when the beam main body 4 is welded to the beam end joint surface 12 of the end plate 6, the small face portions of the flanges 7, 8 of the beam main body 4 can also be welded. The end welding of the part 4 can be performed along the periphery of the end part, and the end plate 6 and the beam main body part 4 can be joined by a single welding operation.

  Specifically, as shown in FIG. 2, welding can be performed over the entire circumference of the H-shaped peripheral edge of the beam main body 4 (in FIG. 2, hatching is provided so as to surround the beam main body 4. Parts are welded). For example, when the dimension L1 in the width direction of the flanges 7 and 8 and the dimension L4 in the width direction of the beam end joint surface portion 12 of the end plate 6 are the same, both ends of the flanges 7 and 8 and both ends of the end plate 6 are used. The part is ready. In this case, welding is performed after attaching welding auxiliary members such as end tabs to both end portions of the flanges 7 and 8, and then the work of cutting the welding auxiliary members is required. However, the dimension L4 in the width direction of the beam end joint surface portion 12 of the end plate 6 is larger than the dimension L1 in the width direction of the beam main body 4 and further to the side than both ends in the width direction of the beam main body 4. The widened portion 13 is formed (see FIG. 1), and the beam end joint surface portion 12 is present. Therefore, the widened portion 13 of the beam end joint surface portion 12 can receive the welded portion at both ends of the end plates 7 and 8 without using a welding auxiliary member. Therefore, for example, from the state in which the upper surface side of the flange 7 is welded, welding is performed by wrapping around the lower surface side of the flange 7 while welding the end portion (small edge surface portion) in the width direction of the flange 7 as it is. it can. In this way, welding can be continuously performed without interrupting welding at the end of the flange 7 in the width direction. The same applies to the flange 8.

  In this way, welding can be applied to both ends in the width direction of the flanges 7 and 8 of the beam main body 4, so that the load acting on the beam main body 4 can be only on the upper and lower sides of the beam main body 4. Therefore, the load can be transmitted from the side to the end plate 6 (to the beam end joint surface portion 12), and the load can be transmitted satisfactorily while avoiding the stress concentration at the location.

  When the beam 3 is joined to the outer peripheral surface 2 a of the column 1, the beam 3 passes through the side edge surface portion 14 of the end plate 6 with the normal line NL of each surface passing through the axis CL of the column 1. It is attached in a state where it does not intersect with a virtual line VL formed by being inclined by 45 ° in the horizontal direction. The virtual line VL forms a diagonal line with respect to the cross section of the column 1 and attaches the beam 3 to each outer peripheral surface 2a of the column 1 in a state where the side edge portion 14 of the end plate 6 does not intersect the diagonal line. Therefore, even when the beam is joined to each outer peripheral surface 2a of the column 1, the buffering between the beams 3 does not occur, and the beam 3 is connected to the column 1 regardless of the presence or absence of the adjacent beams 3. It can be attached to.

  Further, in the beam-column joint structure 100 according to the present embodiment, the width of the column contact surface portion 11 of the end plate 6 is slightly smaller than the width of the column 1, and the side edge surface portion 14 includes the column contact surface portion 11 and the beam end joint surface portion. It is inclined at an angle of 45 ° with respect to 12 normals. For example, when the inclination with respect to the normal is large, it is easy to ensure the width of the widened portion 13, but the corner portion on the beam end joint surface portion 12 side becomes thin, and it is difficult to ensure the strength. Or the width | variety by the side of a pillar contact surface part becomes narrow in connection with it, and it may be connected also to the width | variety of a surface contact part being smaller than the width | variety of an end, and not obtaining desired joining strength. On the other hand, when the inclination with respect to the normal is small, it is easy to ensure the strength of the corner, but it is difficult to ensure the size of the beam end joint surface portion 12. In the case of 45 °, these balances can be taken. Moreover, when the end plate 6 is joined to the outer peripheral surface 2a of the column 1 and the end plate 6 is also joined to the outer peripheral surface 2a adjacent to the outer peripheral surface 2a, the side edge surfaces 14 of the end plates 6 are parallel to each other. To become opposite. That is, the corners on the column contact surface portion 11 side are not too close to each other, and the corners of the beam end joining surface portion 12 are not too close to each other. It becomes easy to perform the joining work so that the side edge surfaces 14 of the 6 side portions do not interfere with each other.

  Further, in the column beam connection structure 100 according to the present embodiment, the end plate 6 includes the extending portion 16 above the upper end portion of the beam main body portion 4 and extends downward from the lower end portion of the beam main body portion 4. A standing portion 17 is provided. According to this, since the welding connection can be performed between the extension parts 16 and 17 and the beam main body part 4 and the turn welding can be performed from the side, the beam main body part can be obtained without increasing the welding labor. 4 and the end plate 6 can be further improved in bonding strength.

  Further, in the column-beam joint structure 100 according to the present embodiment, a joint portion 21 to the pillar 1 is provided in one or both of the pair of extending portions 16 and 17. According to this, the joint strength between the beam 3 and the column 1 can be improved.

  The present invention is not limited to the embodiment described above.

  For example, in the above-described embodiment, the beam 3 is fixed to each of the four side surfaces 2, but it is sufficient that at least one side surface 2 is provided with the beams 3. Further, the beam 3 is not limited to the H-shaped steel but may be a square steel pipe. Further, the side edge surface portion 14 may not be inclined at 45 °, and any angle may be adopted as long as it does not contact the virtual line VL. Further, the side fore edge part 14 is partially inclined on the column contact surface part 11 side and the beam end joint surface part 12 side is vertical. However, the entire side edge edge part 14 may be inclined. .

  DESCRIPTION OF SYMBOLS 1 ... Column, 2 ... Side surface part, 3 ... Beam, 4 ... Beam main-body part, 6 ... End plate, 11 ... Column contact surface part, 12 ... Beam end joining surface part, 14 ... Side edge part, 16, 17 ... Extension Part, 21 ... joint part, 100 ... column beam joint structure.

Claims (5)

Pillars,
A beam fixed to one side of the pillar,
The beam includes a beam main body, and a plate-like end plate that is fixed to the beam main body and comes into surface contact with the outer peripheral surface of the column.
The beam main body portion is formed to have a width approximately equal to the width of the pillar,
The end plate includes a column contact surface portion that makes surface contact with the column, and a beam end joint surface portion that is joined to an end portion of the beam main body portion,
The column contact surface portion is formed with a width equal to or slightly smaller than the width of the column, and the beam end joint surface portion is formed with a width larger than the width of the beam body portion, and The end plate includes a pair of side edge surfaces that extend along the height direction of the beam main body and connect the surface portions.
The side edge surface part is at least a part of the column contact surface side or the whole from the column contact surface part side to the beam end joint surface part with respect to the normal line of the column contact surface part and the beam end joint surface part. It is formed in a state where it is inclined in a widened shape from the side toward the beam end joint surface side,
The beam is attached in a state in which a normal line of each surface passing through the axis of the column is inclined by 45 ° in a horizontal direction without intersecting a side edge portion of the end plate.
The adjacent end plates are in a state of being spaced apart from each other. The width of the column contact surface portion of the end plate is slightly smaller than the width of the column, and the side edge surface portion is inclined at an angle of 45 ° with respect to the normal line of the column contact surface portion and the beam end joint surface portion. The column beam connection structure according to claim 1. The said end plate is provided with the extended part above the upper end part of the said beam main-body part, and is provided with the extended part below the lower end part of the beam main-body part, The Claim 1 or Claim characterized by the above-mentioned. Item 3. The beam-column joint structure according to Item 2. The column beam connection structure according to claim 3, wherein one or both of the pair of extending portions includes a joint portion with a column. A building comprising the column-beam joint structure according to any one of claims 1 to 4.

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