JP2016130412A - Column-beam construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a column-beam construction method that reduces labor and costs when temporarily and directly connecting a web to a web plate, and ensures column-beam construction to be performed safely and readily.SOLUTION: A column-beam construction method includes: a web plate construction step in which a web plate 30 is connected to an outer peripheral surface of a column 10, an upper diaphragm 21, and a lower diaphragm 22, such that the web plate is interposed in a vertical direction between the upper diaphragm 21 and the lower diaphragm 22; and a beam construction step in which an upper flange 51 of a beam 50 is connected to the upper diaphragm 21, a lower flange 52 of the beam 50 is connected to the lower diaphragm 22, and a web 53 of the beam 50 is connected to the web plate 30. In the beam construction step, the web 53 is connected directly to the web plate 30, without temporarily connecting the web directly.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a column beam construction method.

  Conventionally, various column beam construction methods for joining an H-shaped steel beam to a column to which a diaphragm is attached have been proposed (for example, see Patent Document 1). Such a conventional column beam construction method generally involves welding a web plate (corresponding to the gusset plate of Patent Document 1) so as to protrude to the beam side with respect to the column, and then beaming the web plate. The web is bolted and temporarily joined to determine the beam position. Finally, the column diaphragm and beam flange are welded, and the column outer surface and beam web are welded. And the beam. That is, in the conventional column beam construction method, the beam is temporarily joined and positioned once using a web plate, and then the main joining such as welding is performed to satisfy the structurally required strength.

JP 2009-74349 A

  Here, in the conventional column beam construction method according to Patent Document 1, the web is temporarily joined to the web plate as described above, but such temporary joining is performed manually at a high place near the beam. As a result, labor and cost are required for the work, safety problems arise, and skill is required. Thus, there has been a demand for a safe and easy column beam construction method that can reduce the labor and cost involved in temporarily joining the web directly to the web plate.

  The present invention has been made in view of the above, and it is possible to reduce the labor and cost involved in temporarily joining the web directly to the web plate, and it is also possible to safely and easily use the column beam. The purpose is to provide a construction method.

  In order to solve the above-described problems and achieve the object, the column beam construction method according to claim 1 is directed to a column attached with an upper diaphragm and a lower diaphragm protruding outward from the outer peripheral surface. Column beam construction method for joining beam made of steel, and the outer peripheral surface of the column, the upper diaphragm, and the upper diaphragm, so as to be interposed along the vertical direction between the upper diaphragm and the lower diaphragm A web plate construction process for joining a web plate to a lower diaphragm; joining an upper flange of the beam to the upper diaphragm; joining a lower flange of the beam to the lower diaphragm; A beam construction process for joining the web of the beam to the web plate in the beam construction process. Without Rukoto, directly this junction.

  The column beam construction method according to claim 2 is the column beam construction method according to claim 1, wherein in the web plate construction step, an outer end portion of the upper diaphragm, an outer end portion of the lower diaphragm, and the web plate The web plates are joined so that their outer ends are located on the same vertical plane, and in the beam construction step, the upper flange of the beam is joined to the outer end of the upper diaphragm, The lower flange of the beam is joined to the outer end of the lower diaphragm, and the web of the beam is joined to the outer end of the web plate.

  The column beam construction method according to claim 3 is the column beam construction method according to claim 1 or 2, wherein the temporary plate is constructed on a side surface of the web plate constructed in the web plate construction process. A temporary joining step of temporarily joining the web indirectly to the web plate by temporarily joining the web to the temporary plate with a bolt before the construction step and the beam construction step; ,including.

  The column beam construction method according to claim 4 is the column beam construction method according to any one of claims 1 to 3, wherein the web is not brought into contact with the column in the beam construction step. The web is bonded to the web plate.

  The structure according to claim 5 is constructed by the column beam construction method according to any one of claims 1 to 4.

  According to the column beam construction method according to claim 1 and the structure according to claim 5, since the web is directly joined to the web plate without directly temporarily joining the web plate, On the other hand, it is possible to reduce labor and cost associated with temporary temporary joining of the web, and it is possible to work safely and easily.

  According to the column beam construction method according to claim 2, since the outer end portion of the upper diaphragm, the outer end portion of the lower diaphragm, and the outer end portion of the web plate are located on the same vertical plane, Further, it is possible to omit the work of cutting the beam into a complicated shape in which the web of the beam protrudes to the column side rather than the lower flange of the beam, and it is possible to reduce labor and cost required for the work.

  According to the column beam construction method according to claim 3, since the temporary plate is provided, the web can be joined to the web plate after the web is accurately positioned by the temporary plate, and the construction accuracy can be improved. In addition, the temporary plate can be used as a backing metal when the web is welded to the web plate.

  According to the column beam construction method of claim 4, since the web is joined to the web plate without bringing the web into contact with the column, compared to the case where the beam is directly joined to the column. The length of the beam can be shortened, and it is possible to reduce the labor and cost of transporting the beam to the construction site, and there are special circumstances where the beam cannot be brought into contact with the column. Even in some cases, the beams can be suitably joined.

It is a figure which shows the structure which concerns on Embodiment 1 of this invention, Comprising: Fig.1 (a) is a front view, FIG.1 (b) is a top view. It is an enlarged view of the A section of FIG. It is a figure which shows the structure constructed | assembled at the web plate construction process, Comprising: Fig.3 (a) is a front view, FIG.3 (b) is a top view. It is a figure which shows the structure constructed | assembled in the temporary plate construction process, Comprising: Fig.4 (a) is a front view, FIG.4 (b) is a top view. It is a figure which shows the structure constructed | assembled by the temporary joining process, Comprising: Fig.5 (a) is a front view, FIG.5 (b) is a top view. It is a figure which shows the structure which concerns on Embodiment 2 of this invention, Comprising: Fig.6 (a) is a front view, FIG.6 (b) is a top view.

  Hereinafter, each embodiment of the column beam construction method according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited by this embodiment.

[Basic concept of the embodiment]
First, the basic concept of each embodiment will be described. Each embodiment relates generally to a column beam construction method for constructing a joint portion by joining an H-shaped steel beam to a steel column. In addition, although the cross-sectional shape of a pillar is arbitrary, for example, a cross-sectional shape may be a circular pillar, In this Embodiment, a cross-sectional shape shall be a square pillar. In this embodiment, the column beam construction method is applied to construct a steel frame structure. For example, concrete is placed around or inside a column or around a beam. Thus, a steel reinforced concrete structure may be constructed. Moreover, the use of the constructed structure is arbitrary and can be used as a part of various buildings.

[Specific contents of the embodiment]
Next, specific contents of each embodiment will be described.

(Embodiment 1)
First, the first embodiment will be described. Below, the structure of the structure constructed | assembled by the column beam construction method which concerns on this Embodiment 1 is demonstrated first, and the order for the column beam construction method itself which constructs the said structure next for every process is demonstrated. I will explain later.

(Constitution)
1A and 1B are diagrams showing a structure 1 according to the first embodiment, where FIG. 1A is a front view and FIG. 1B is a plan view. FIG. 2 is an enlarged view of a portion A in FIG. As shown in FIGS. 1 and 2, the structure 1 includes a column 10, a diaphragm 20, a web plate 30, a temporary plate 40, and a beam 50. In the following description, the XX ′ direction in each figure is the width direction (X direction is right, X ′ direction is left), and YY ′ direction is the depth direction (Y direction is forward, Y ′ direction). ) And the ZZ ′ direction are referred to as the height direction (the Z direction is upward and the Z ′ direction is downward). Further, with respect to an arbitrary point as a reference, the direction away from the axial center of the column 10 in the width direction or the depth direction (or a combination thereof) is referred to as “outside”, and the direction approaching the axis of the column 10 is referred to as “inside”. . Moreover, in this Embodiment 1, although demonstrated as what joins the beam 50 to the right side surface of the pillar 10, it is not restricted to this, When the beam 50 is joined to the front side surface, rear side surface, and left side surface of the pillar 10 This can be explained in the same way.

(Configuration-Pillar)
The pillar 10 is a support member for supporting a building, and is a known pillar to which the beam 50 is to be joined. This column 10 is a known square steel arranged along the height direction, and includes three members (an “upper column 11” located on the upper side and a “lower column 12” located on the lower side) in the height direction. The upper pillar 11 and the lower pillar 12 are divided into “middle pillars 13”). The upper pillar 11 and the middle pillar 13 are connected to each other via a through diaphragm ("upper diaphragm 21" described later), and the middle pillar 13 and the lower pillar 12 are also connected to each other ("lower diaphragm 22" described later). Are connected to each other. In addition, when it is not necessary to distinguish these three pillars 10 from each other, they are simply referred to as “pillars 10”.

(Configuration-Diaphragm)
The diaphragm 20 is a transmission member arranged so that bending stress can be transmitted between the beam 50 and the column 10, and is a through diaphragm arranged near the same height as the beam 50. The diaphragm 20 includes two diaphragms, an upper diaphragm 21 and a lower diaphragm 22, and the diaphragm 20 is arranged along a horizontal plane so as to be orthogonal to the column 10. The upper diaphragm 21 is a long plate-shaped steel plate that is welded to the lower end portion of the upper column 11 and welded to the upper end portion of the middle column 13. The lower diaphragm 22 is a long plate-shaped steel plate that is welded to the lower end portion of the middle column 13 and welded to the upper end portion of the lower column 12. In addition, when it is not necessary to distinguish these two diaphragms 21 and 22 from each other, they are simply referred to as “diaphragm 20”.

  Here, the vertical distance between the upper diaphragm 21 and the lower diaphragm 22 is formed to correspond to the height of the beam 50. Specifically, the height from the upper end surface of the upper diaphragm 21 to the lower end surface of the lower diaphragm 22 is configured to coincide with the height of the beam 50.

  The upper diaphragm 21 and the lower diaphragm 22 are formed in the same shape. Specifically, each diaphragm 20 is a long plate-shaped steel plate that has a predetermined thickness and is long in the width direction. When attached to the column 10, the beam 50 is positioned at the front, rear, left, and right end portions. The end (the right end in the first embodiment) is larger than the end where the beam 50 is not located (the left end, the front end, and the rear end in the first embodiment). Projects outward. More specifically, the width from the right side of the column 10 to the right end of the diaphragm 20 is about 75 mm, the width from the left side of the column 10 to the left end of the diaphragm 20, and the width of the diaphragm 20 from the front side of the column 10. The depth to the front end and the depth from the rear side surface of the column 10 to the rear end of the diaphragm 20 are both about 35 mm. In addition, holes 23 are formed at the center and at the four corners of each diaphragm 20 to ensure fillability when placing concrete into the column 10.

(Configuration-Web plate)
The web plate 30 is a joining means that is a target for joining a web 53 (described later) of the beam 50. The web plate 30 is disposed on the right side of the column 10 and is interposed vertically between the upper diaphragm 21 and the lower diaphragm 22 and is disposed along a vertical plane. The web plate 30 is formed in a long plate shape, the length in the width direction matches the length from the right side surface of the column 10 to the right end of the diaphragm 20, and the length in the height direction is the upper diaphragm 21. This corresponds to the length from the lower end surface of the lower diaphragm 22 to the upper end surface of the lower diaphragm 22. Therefore, the right end portion of the web plate 30, the right end portion of the upper diaphragm 21, and the right end portion of the lower diaphragm 22 are located on the same vertical plane. As a result, the shape of the end of the beam 50 welded to the right end can be simplified, and the labor and cost required for forming the beam 50 can be reduced.

  In addition, a notch 31 for preventing contact between the welded portion of the middle column 13 and the upper diaphragm 21 and the web plate 30 is formed at the upper left end of the web plate 30. A notch 32 for preventing contact between the welded portion of the middle column 13 and the lower diaphragm 22 and the web plate 30 is formed at the lower left end. The left end portion of the web plate 30 is fillet welded to the right side surface of the column 10, and the right end portion of the web plate 30 is groove-welded to the left end portion of the web 53 (described later) of the beam 50. The upper end portion of the web plate 30 is fillet welded to the lower end surface of the upper diaphragm 21, and the lower end portion of the web plate 30 is fillet welded to the upper end surface of the lower diaphragm 22. The material of the web plate 30 is arbitrary as long as it has a strength that satisfies the required structural performance when bonded to the web 53, but can be formed of a known steel plate, for example.

(Configuration-Temporary plate)
The temporary plate 40 is an indirect joining means for indirectly joining a web 53 (described later) of the beam 50 to the web plate 30. Specifically, the temporary plate 40 is a long plate-shaped body disposed substantially on the right side of the column 10, and the left side of the temporary plate 40 has a substantially half side surface with respect to the rear surface of the web plate 30. The fillet is welded. In addition, a plurality of (four in the first embodiment) temporary plate holes 41 are arranged in the vertical direction on the side surface of the right side of the temporary plate 40, and the temporary plate hole 41 and the beam The temporary plate 40 and the web 53 of the beam 50 are joined to each other by bolts 57 inserted through web holes 56 (described later) formed in the web 53 of the 50. That is, the temporary plate holes 41 are formed at intervals corresponding to the web holes 56 formed in the web 53 of the beam 50. A play is provided in the diameter of the temporary plate hole 41, and the position of the beam 50 can be finely adjusted by this play.

(Configuration-Beam)
The beam 50 is a support member that is joined to the column 10 and is formed as an H-shaped steel beam arranged on the right side of the column 10. The beam 50 generally includes an upper flange 51, a lower flange 52, and a web 53.

  The upper flange 51 is a long plate member positioned on the upper side of the beam 50 and arranged along a horizontal plane, and a groove 51a for welding is formed along the depth direction at the left end of the upper flange 51. It is welded and joined to the right end portion of the upper diaphragm 21 at the groove 51a. The lower flange 52 is a long plate member positioned along a horizontal plane located on the lower side of the beam 50, and a welding groove 52 a extends along the depth direction at the left end of the lower flange 52. It is formed and welded to the right end portion of the lower diaphragm 22 at this groove portion 52a. The web 53 is a long plate member arranged along a vertical plane that connects the upper flange 51 and the lower flange 52, and a groove portion 53 a for welding is formed at the left end portion of the web 53. The groove 53a is welded to the right end of the web plate 30. Further, a notch 54 for arranging a backing metal 51b when the upper flange 51 is welded to the upper diaphragm 21 is formed at the upper left end of the web 53, and at the lower left end of the web 53, A notch 55 for inserting a welding rod when the lower flange 52 is welded to the lower diaphragm 22 is formed. Further, in the vicinity of the left end portion of the web 53, a plurality of (four in the first embodiment) web holes 56 penetrating the web 53 back and forth are provided in parallel. The web holes 56 are formed at intervals corresponding to the temporary plate holes 41 of the temporary plate 40 as described above. By inserting bolts 57 from the web holes 56 to the temporary plate holes 41 and fastening them, The position of the web 53 with respect to the plate 40 can be fixed. A play is provided in the diameter of the web hole 56, and the position of the beam 50 can be finely adjusted by this play.

  Thus, the beam 50 is joined to the column 10 via the temporary plate 40 and the web plate 30 and is not directly joined to the column 10. Therefore, the length of the beam 50 can be shortened as compared with the case where the beam 50 is directly joined to the column 10 as in the prior art, and the labor and cost for transporting the beam 50 to the construction site can be reduced. In addition, the beam 50 can be suitably joined even when there is a special circumstance in which the beam 50 cannot be brought into contact with the column 10.

(Column beam construction method)
Subsequently, a column beam construction method for constructing the structure 1 configured as described above will be described. Here, the column beam construction method according to the first embodiment is characterized in that the web 53 is directly joined to the web plate 30 directly without being temporarily joined. Here, “directly joining” means joining without any other member. On the other hand, “indirect joining (to be described later)” means joining through another member. In addition, “temporary joining” is joining that does not satisfy performance required for the structure, and includes, for example, bolt joining for simple positioning, joining with an adhesive, and the like. On the other hand, the “main joining” is a joining satisfying the performance required for the structure, and includes a concept including, for example, welding joining or joining with a high tension bolt. In addition, about the diaphragm 20 attached to the pillar 10 and the pillar 10, it shall construct by a well-known method and the detailed description is abbreviate | omitted.

(Column beam construction method-web plate construction process)
First, a web plate construction process for constructing the web plate 30 is performed. 3A and 3B are diagrams showing the structure 1 constructed in the web plate construction process, in which FIG. 3A is a front view and FIG. 3B is a plan view. Specifically, as shown in FIG. 3, the web plate 30 is disposed on the right side of the column 10, and the web plate 30, the right side surface of the column 10, the lower end surface of the upper diaphragm 21, and the upper side of the lower diaphragm 22 are arranged. The end face is welded with fillet by a known method. In order to increase the strength, it is preferable to perform fillet welding from both the front surface and the rear surface of the web plate 30.

(Column beam construction method-temporary plate construction process)
Next, a temporary plate construction process for constructing the temporary plate 40 is performed. 4A and 4B are diagrams showing the structure 1 constructed in the temporary plate construction process, in which FIG. 4A is a front view and FIG. 4B is a plan view. Specifically, as shown in FIG. 4, the web plate 30 and the temporary plate 40 are welded from the rear surface to the fillet weld in a state where a part of the front surface of the temporary plate 40 is in contact with the rear surface of the web plate 30. To do. Although fillet welding is performed in the first embodiment, any joining method may be employed as long as it has a strength capable of supporting the beam 50, and may be joined with an adhesive or a bolt, for example.

(Column beam construction method-provisional joining process)
Next, a temporary joining step for indirectly temporarily joining the web 53 to the web plate 30 is performed. FIGS. 5A and 5B are diagrams showing the structure 1 constructed in the temporary joining process, in which FIG. 5A is a front view and FIG. 5B is a plan view. As shown in FIG. 5, first, a process for forming groove portions 51a, 52a, 53a, notches 54, 55, web holes 56, and the like is performed on each of the left end portions of the beam 50, as shown in FIG. The shape of the simple beam 50 is constructed. Here, in the first embodiment, the right end portion of the upper diaphragm 21, the right end portion of the lower diaphragm 22, and the right end portion of the web plate 30 are located on the same vertical plane. What is necessary is just to process so that the left end part of the upper flange 51 of the beam 50 to be joined, the left end part of the lower flange 52, and the left end part of the web 53 may be located on the same vertical plane. Therefore, since it is not necessary to process the left end portion of the beam 50 into a complicated shape, the beam 50 can be easily formed and processed, and labor and cost required for forming the beam 50 can be reduced.

  Next, the beam 50 is lifted and fixed in a state where the web hole 56 and the temporary plate hole 41 are aligned. Although the specific method of this fixing is arbitrary, you may fix using a heavy machine etc., for example. Next, a bolt 57 is inserted so as to reach the temporary plate hole 41 of the temporary plate 40 from the web hole 56 of the web 53, and is screwed into a nut installed on the rear surface side of the temporary plate 40. The web 53 is fixed and positioned. Here, since the play is provided in the web hole 56 and the temporary plate hole 41 as described above, the beam 50 can be positioned at any position parallel to the diaphragm 20. In addition, between the web 53 and the web plate 30, between the upper flange 51 and the upper diaphragm 21, and between the lower flange 52 and the lower diaphragm 22, a route interval suitable for welding (for example, about 7 mm). It is preferable to ensure. In this way, the web 53 and the web plate 30 can be temporarily joined indirectly via the temporary plate 40.

(Column beam construction method-beam joining process)
Finally, a beam joining step for joining the beams 50 is performed to complete the structure 1 shown in FIG. Specifically, first, a backing metal 51b is installed below the joint portion between the upper flange 51 and the upper diaphragm 21, and the welding rod is moved along the joint portion from above the upper flange 51 and the upper diaphragm 21. Thus, the upper flange 51 and the upper diaphragm 21 are joined. Next, a backing metal 52b is installed below the joint portion between the lower flange 52 and the lower diaphragm 22, and the welding rod is moved along the joint portion from above the lower flange 52 and the lower diaphragm 22, thereby The flange 52 and the lower diaphragm 22 are joined. Next, the web 53 and the web plate 30 are joined by carrying a welding rod along the joining portion from the front of the web 53 and the web plate 30. At this time, the temporary plate 40 is installed behind the joint portion between the web 53 and the web plate 30. Since the temporary plate 40 can be used as a backing metal, the trouble of preparing the backing metal separately, Costs can be omitted. The welding order is not limited to the order shown above. For example, the web 53 and the lower flange 52 may be welded first. Thus, the column beam construction method according to the first embodiment is completed.

(Effect of Embodiment 1)
As described above, according to the column beam construction method of the first embodiment, the web 53 is directly joined to the web plate 30 without being temporarily joined temporarily. It is possible to reduce the labor and costs associated with temporary joining 53 directly, and it is possible to work safely and easily.

  Further, since the outer end of the upper diaphragm 21, the outer end of the lower diaphragm 22, and the outer end of the web plate 30 are located on the same vertical plane, the upper flange 51 of the beam 50 and the lower flange of the beam 50 The work of cutting the beam 50 into a complicated shape in which the web 53 of the beam 50 protrudes toward the column 10 rather than 52 can be omitted, and labor and cost required for the work can be reduced.

  In addition, since the temporary plate 40 is provided, the web 53 can be joined to the web plate 30 after the web 53 is accurately positioned by the temporary plate 40, so that the construction accuracy can be improved. 40 can also be used as a backing metal when the web 53 is welded to the web plate 30.

  In addition, since the web 53 is joined to the web plate 30 without bringing the web 53 into contact with the pillar 10, the length of the beam 50 can be increased compared to the case where the beam 50 is joined directly to the pillar 10. When the beam 50 can be shortened, it is possible to reduce the labor and cost for transporting the beam 50 to the construction site, and there are special circumstances where the beam 50 cannot be brought into contact with the column 10 In this case, the beam 50 can be preferably joined.

(Embodiment 2)
Next, the second embodiment will be described. The configuration of the second embodiment is substantially the same as the configuration of the first embodiment except where otherwise specified, and the same configuration as that of the first embodiment is used in the first embodiment. The same reference numerals are attached as necessary, and the description thereof is omitted.

  Below, the structure of the structure 2 constructed | assembled by the column beam construction method which concerns on this Embodiment 2 is demonstrated, and it follows for every process about the column beam construction method itself which constructs the said structure 2 next. explain.

(Constitution)
6A and 6B are diagrams showing the structure 2 according to the second embodiment, in which FIG. 6A is a front view and FIG. 6B is a plan view. As shown in FIG. 6, the structure 2 includes a column 10, a diaphragm 20, a web plate 60, and a beam 70. Since the pillar 10 and the diaphragm 20 can be configured in the same manner as in the first embodiment, detailed description thereof is omitted.

(Configuration-Web plate)
The web plate 60 is a joining means that is a target for joining a web 73 (described later) of the beam 70. The web plate 60 is disposed on the right side of the pillar 10 and is interposed between the upper diaphragm 21 and the lower diaphragm 22 in the vertical direction. The web plate 60 is formed as a plate-like body having a part that protrudes further to the right than the right end of the diaphragm 20. As described above, unlike the first embodiment, the web plate 60 of the second embodiment has the right end portion of the web plate 60, the right end portion of the upper diaphragm 21, and the right end portion of the lower diaphragm 22 mutually. They are not on the same vertical plane. Further, a notch 61 for preventing contact between the welded portion of the middle column 13 and the upper diaphragm 21 and the web plate 60 is formed at the upper left end of the web plate 60. A notch 62 for preventing contact between the welded portion of the middle column 13 and the lower diaphragm 22 and the web plate 60 is formed at the lower left end. The material of the web plate 60 is arbitrary as long as it has a strength that satisfies the required structural performance when joined to the web 73, but can be formed of, for example, a steel plate. The web plate 60 is fillet welded to the column 10, the upper diaphragm 21, and the lower diaphragm 22 as in the first embodiment.

  Here, a plurality of web plate holes 63 penetrating the web plate 60 in the front-rear direction (in the second embodiment, a total of 18 in 9 rows and 2 columns) are vertically provided in a portion that protrudes to the right side in the web plate 60. It is installed side by side. The web plate hole 63 is a hole for joining the web plate 60 and the web 73 of the beam 70 to each other with a high tension bolt 77. A web hole 76 (described later) formed in the web 73 of the beam 70. ) And holes formed at intervals corresponding to each other. Note that a play is provided in the diameter of the web plate hole 63, and the position of the beam 70 can be adjusted by this play.

(Configuration-Beam)
The beam 70 is a support member joined to the column 10 and is formed as an H-shaped steel beam disposed on the right side of the column 10. And a web 73. Here, the upper flange 71 is a long plate member positioned along the horizontal plane located on the upper side of the beam 70, and a groove portion 71 a for welding is formed in the depth direction at the left end portion of the upper flange 71. And is welded to the right end portion of the upper diaphragm 21 at this groove portion 71a. The lower flange 72 is a long plate member positioned along the horizontal plane located on the lower side of the beam 70, and a welding groove 72 a is formed along the depth direction at the left end of the lower flange 72. The groove portion 72 a is welded to the right end portion of the lower diaphragm 22. In the second embodiment, the web 73 of the beam 70 is not welded to the web plate 60. Therefore, unlike the first embodiment, a groove for welding is provided at the left end of the web 73 of the beam 70. The part is not formed.

  Further, a notch 74 for arranging a backing metal 71b for welding the upper flange 71 to the upper diaphragm 21 is formed at the upper left end of the web 73, and at the lower left end of the web 73, A notch 75 for inserting a welding rod when the lower flange 72 is welded to the lower diaphragm 22 is formed. Further, in the vicinity of the left end portion of the beam 70, a plurality of web holes 76 (18 in total in 9 rows and 2 columns in the second embodiment) penetrating the web 73 in the front-rear direction are arranged side by side. The web holes 76 are formed at intervals corresponding to the web plate holes 63 of the web plate 60 as described above, and the high tension bolts 77 are inserted into the web plate holes 63 from the web holes 76 and fastened. The position of the web 73 with respect to the web plate 60 can be fixed. The diameter of the web hole 76 is larger than the diameter of the high tension bolt 77, and play is provided, and the position of the beam 70 can be adjusted by this play.

(Column beam construction method)
Next, a column beam construction method for constructing the structure 2 configured as described above will be described. Here, the column beam construction method according to the second embodiment is also characterized in that the web 73 is directly joined to the web plate 60 directly without being temporarily joined. Note that illustration of each process is omitted.

(Column beam construction method-web plate construction process)
First, a web plate construction process for constructing the web plate 60 is performed. Specifically, the web plate 60 is disposed on the right side of the column 10, and the web plate 60, the right side surface of the column 10, the lower surface of the upper diaphragm 21, and the upper surface of the lower diaphragm 22 are fillet welded by a known method. To do.

(Column beam construction method-beam joining process)
Next, a beam joining step for joining the beams 70 is performed to complete the structure 2 shown in FIG. Specifically, first, the beam 70 is lifted and fixed in a state where the web holes 76 and the web plate holes 63 are aligned. Although the specific method of this fixing is arbitrary, you may fix using a heavy machine etc., for example. Next, a bolt is inserted so as to reach the web plate hole 63 of the web plate 60 from the web hole 76 of the web 73 and screwed into a nut installed on the rear surface side of the web plate 60, thereby 73 is fixed. Next, a backing metal 71 b is installed below the joint portion between the upper flange 71 and the upper diaphragm 21, and the welding rod is moved along the joint portion from above the upper flange 71 and the upper diaphragm 21. The flange 71 and the upper diaphragm 21 are joined. Next, a backing metal 72b is installed below the joint portion between the lower flange 72 and the lower diaphragm 22, and the welding rod is moved along the joint portion from above the lower flange 72 and the lower diaphragm 22, thereby The flange 72 and the lower diaphragm 22 are joined. The order of joining is not limited to the order shown above. For example, the web 73 may be joined with a high tension bolt after the upper flange 71 and the lower flange 72 are first welded. The column beam construction method according to the second embodiment is thus completed.

(Effect of Embodiment 2)
As described above, according to the column beam construction method of the second embodiment, the procedure of temporarily joining the beam 70 to the column 10 can be omitted and the structure 2 in which the column 10 and the beam 70 are joined can be configured. Therefore, it is possible to reduce labor and cost associated with temporarily joining the beam 70 to the column 10 and to perform work safely and easily.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention are arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. be able to. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above contents, and may vary depending on the implementation environment and details of the configuration of the invention. May be solved, or only some of the effects described above may be achieved. For example, the column beam construction method according to each embodiment may not be able to reduce the labor and cost involved in temporarily joining the webs 53 and 73 directly to the web plates 30 and 60, or safety. Even when the work cannot be easily performed, the problem of the present invention is solved when the column 10 and the beam 70 can be constructed by a technique different from the conventional technique.

(About dimensions and materials)
The dimensions, shapes, ratios, materials, and the like of the parts of the structures 1 and 2 described in the detailed description of the invention and the drawings are merely examples, and other arbitrary dimensions, shapes, ratios, materials, and the like can be used. .

(About the pillar)
In the present embodiment, concrete is filled into the pillar 10 to make the pillar 10 a concrete filled steel pipe structure (CFT (Concrete Filled Steel Tube)). However, the present invention is not limited to this, and concrete is placed inside the pillar 10. A structure without filling may be used. In this case, it is not necessary to provide the hole 23 for ensuring the concrete filling property at the center and four corners of the diaphragm 20.

(About welding)
The bonding method shown in each embodiment is merely an example, and bonding may be performed using other methods as appropriate. For example, the fillet welded portion in each embodiment may be groove-welded, or may be joined by other methods such as bolt fastening with a high tension bolt 77 instead of welding. Further, welding may be performed without using a backing metal. In the second embodiment, the web plate 60 and the web 73 are joined with the high tension bolt 77 and are not welded to each other. However, in addition to joining with the high tension bolt 77, the web plate 60 and the web 73 are further joined. Welding may be performed.

(About the shape of each part)
In the first embodiment, the outer end portion of the upper diaphragm 21, the outer end portion of the lower diaphragm 22, and the outer end portion of the web plate 30 are described as being located on the same vertical plane. Not limited. For example, the outer end portion of the web plate 30 may be inside the outer end portion of the diaphragm 20.

(Appendix)
The column beam construction method of Supplementary Note 1 is a column beam construction method for joining an H-shaped steel beam to a column attached so that the upper diaphragm and the lower diaphragm protrude outward from the outer peripheral surface, A web plate construction process for joining a web plate to the outer peripheral surface of the column, the upper diaphragm, and the lower diaphragm so as to be interposed along the vertical direction between the upper diaphragm and the lower diaphragm, Joining the upper flange of the beam to the upper diaphragm, joining the lower flange of the beam to the lower diaphragm, and joining the web of the beam to the web plate; and In the beam construction step, the web is directly joined to the web plate directly without temporarily joining.

  The column beam construction method according to appendix 2 is the column beam construction method according to appendix 1, wherein in the web plate construction step, an outer end portion of the upper diaphragm, an outer end portion of the lower diaphragm, and an outer end portion of the web plate Are joined to each other on the same vertical plane, and in the beam construction process, the upper flange of the beam is joined to the outer end of the upper diaphragm, and the lower diaphragm The lower flange of the beam is joined to the outer end, and the web of the beam is joined to the outer end of the web plate.

  The column beam construction method of appendix 3 is the temporary beam construction step of constructing a temporary plate on the side surface of the web plate constructed in the web plate construction step in the column beam construction method of appendix 1 or 2. A temporary joining step of temporarily joining the web to the web plate indirectly by temporarily joining the web to the temporary plate with a bolt before the beam construction step.

  The column beam construction method according to appendix 4 is the column beam construction method according to any one of appendices 1 to 3, wherein the web plate is not brought into contact with the column in the beam construction step. To join the web.

  The structure of Supplementary Note 5 is constructed by the column beam construction method according to any one of Supplementary Notes 1 to 4.

(Additional effects)
According to the column beam construction method described in appendix 1 and the structure described in appendix 5, the web is directly joined to the web plate directly without temporarily joining the web plate. It is possible to reduce the labor and cost associated with the temporary joining of the web directly, and it is possible to work safely and easily.

  According to the column beam construction method described in appendix 2, the outer end portion of the upper diaphragm, the outer end portion of the lower diaphragm, and the outer end portion of the web plate are located on the same vertical plane. In addition, it is possible to omit the work of notching the beam into a complicated shape in which the web of the beam protrudes to the column side rather than the lower flange of the beam, and it is possible to reduce labor and cost required for the work.

  According to the column beam construction method described in appendix 3, since the temporary plate is provided, the web can be joined to the web plate after the web is accurately positioned with the temporary plate, and the construction accuracy can be improved. In addition, the temporary plate can also be used as a backing metal when the web is welded to the web plate.

  According to the column beam construction method described in appendix 4, the web is bonded to the web plate without bringing the web into contact with the column. Therefore, the beam is compared with the case where the beam is directly bonded to the column. The length of the beam can be shortened, and it is possible to reduce the labor and cost when transporting the beam to the construction site, and there are special circumstances where the beam cannot be brought into contact with the column. Even in this case, the beams can be suitably joined.

DESCRIPTION OF SYMBOLS 1 Structure 2 Structure 10 Column 11 Upper column 12 Lower column 13 Middle column 20 Diaphragm 21 Upper diaphragm 22 Lower diaphragm 23 Hole 30 Web plate 31 Notch 32 Notch 40 Temporary plate 41 Temporary plate hole 50 Beam 51 Upper flange 51a Open Tip 51b Backing metal 52 Lower flange 52a Groove 52b Backing metal 53 Web 53a Groove 54 Notch 55 Notch 56 Web hole 57 Bolt 60 Web plate 61 Notch 62 Notch 63 Web plate hole 70 Beam 71 Upper flange 71a groove portion 71b backing metal 72 lower flange 72a groove portion 72b backing metal 73 web 74 notch 75 notch 76 web hole 77 high tension bolt

Claims (5)

A column beam construction method for joining a beam made of H-shaped steel to a column attached so that the upper diaphragm and the lower diaphragm protrude outward from the outer peripheral surface,
A web plate construction process for joining a web plate to the outer peripheral surface of the column, the upper diaphragm, and the lower diaphragm so as to be interposed along the vertical direction between the upper diaphragm and the lower diaphragm,
A beam construction step of joining the upper flange of the beam to the upper diaphragm, joining the lower flange of the beam to the lower diaphragm, and joining the web of the beam to the web plate. ,
In the beam construction process, the web is directly joined to the web plate directly without temporarily joining,
Column beam construction method. In the web plate construction step, the web plate is joined so that the outer end portion of the upper diaphragm, the outer end portion of the lower diaphragm, and the outer end portion of the web plate are located on the same vertical plane. ,
In the beam construction step, the upper flange of the beam is joined to the outer end of the upper diaphragm, the lower flange of the beam is joined to the outer end of the lower diaphragm, and the outer end of the web plate Joining the web of the beam to the part,
The column beam construction method according to claim 1. A temporary plate construction process for constructing a temporary plate on the side surface of the web plate constructed in the web plate construction process;
Before the beam construction step, by temporarily joining the web to the temporary plate with bolts, the web is indirectly joined temporarily to the web plate, and a temporary joining step is included.
The column beam construction method according to claim 1 or 2. In the beam construction process, without bringing the web into contact with the pillar, the web is joined to the web plate.
The column beam construction method according to any one of claims 1 to 3. The structure constructed by the column beam construction method according to any one of claims 1 to 4.

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