JP3165014U - Connection structure of steel building materials - Google Patents

Abstract

The present invention provides a steel building material, particularly a connection structure thereof, which is extremely lighter than H-shaped steel of the same standard and has equivalent strength. Connecting plates 114 and 114 are attached to both side surfaces of the ends of the steel frame building materials 1 and 1 to be connected to each other so that the pair of steel frame building materials 1 and 1 are connected and fixed. The connecting plates 114 and 114 are fixed to the hollow steel pipe 2 of the pair of steel frame building materials 1 and 1 by means. [Selection] Figure 4

Description

  The present invention relates to a connection structure for steel frame building materials having a truss structure.

  Conventionally, shaped steel is known as a general-purpose steel frame building material. Shape steel has various cross-sectional shapes and properties standardized by JIS and the like. Of the section steels, the most basic H-section steel is one in which a pair of upper and lower flanges are integrally connected by a web, and the web provides resistance to shearing force.

  These structural steels are used alone for beams, columns, etc. in large structures such as steel structures (S structures) or steel reinforced concrete structures (SRC structures).

  However, H-shaped steel has a considerable weight, is troublesome to carry and move, and is not easy to handle. In addition, when connecting H-section steel, it is necessary to place and weld a reinforcing plate between the flanges at the welding location, which increases the number of parts, increases weight, and causes distortion due to welding distortion, welding defects, etc. This is likely to occur and requires extremely high production technology.

  The present invention solves the above-mentioned problems, and an object of the present invention is to provide a steel frame building material that is extremely lighter than the H-shaped steel of the same standard and that has an equivalent strength, particularly a connection structure thereof.

In order to achieve the above object, a steel building material 1 according to the connection structure of the present invention has a pair of parallel rectangular hollow steel pipes 2 and 2 having a predetermined length and a continuous substantially trapezoidal shape or a continuous substantially V shape or a substantially W shape. A steel plate structure having a zigzag shape and having a top portion 3a (and a bottom portion) integrally fixed to opposing surfaces of the double-sided hollow steel pipes 2 and 2 and having a predetermined thickness, and can be transported as a whole It is characterized by that.
The steel frame building material 1 of the present invention has a truss structure as a whole.

Reinforcing grooves 3c are formed by pressing along the longitudinal direction of the slope 3b of the strip steel material 3, and the top 3a (and bottom) of the strip steel 3 is a flat plate.
As a result, the strip steel material 3 is surely welded and fixed to the hollow steel pipes 2 and 2, and sufficient durability against external forces such as bending is ensured.

The strip steel material 3 is formed by a continuation of a plurality of strip steel materials, and the top 3a or bottom of the end of the strip steel is the top 3a or bottom of the end of another continuous strip steel. It is characterized by being integrally fixed to the opposing surfaces of the above-mentioned double-sided hollow steel pipes 2 and 2 in a butted state.
Thereby, the long and strong steel frame building material 1 is obtained.

  You may make it equip the longitudinal direction edge part of the said steel frame building material 1 with the joint part 10 with respect to the other party building material which comprises a steel frame. The joint portion 10 can be constituted by a metal perforated fixing plate 12 (20, 22) fixed to the inner wall surface of the hollow steel pipe 2 end. The strip steel material 3 is not provided on the inner wall surface of the end portion of the steel pipe 2 to which the fixing plate 12 (20, 22) is fixed by welding.

  In the embodiment of FIG. 3, the fixing plates 12 and 12 of the steel building materials 1 and 1 as the cross beam members facing each other in the linear direction are connected by the connecting plate 14.

  Further, in the embodiment of FIG. 5, the fixing plates 20 and 22 of the steel building materials 1 and 1 facing each other at right angles are overlapped and connected and fixed. In this case, of the two hollow steel pipes 2, 2 constituting the steel building material 1, the inner hollow steel pipe 2 is formed short so as not to collide with the hollow steel pipe 2 of the counterpart steel building material 1.

  Thereby, at the time of the connection operation via the joint part 10 of the steel building materials 1, the presence of the strip steel material 3 does not get in the way.

  Moreover, in the connection structure of the steel building materials according to claim 1 or 2 of the present application, as shown in the embodiment of FIG. 4, on both side surfaces of the end portions of the pair of steel building materials 1 and 1 connected to each other, The connection plates 114 and 114 are attached so that the pair of steel frame building materials 1 and 1 are continuous, and the connection plates 114 and 114 are fixed to the hollow steel pipe 2 of the pair of steel frame building materials 1 and 1 by a fixing means (bolt B). By doing so, a pair of steel building materials are connected and fixed.

  As shown in the embodiment of FIG. 9, the hollow steel pipes 2 and 2 are bent in an arch shape, and the strip steel material 3 holds both hollow steel pipes 2 and 2 in parallel arched curved surfaces. It can be set as the structure arrange | positioned between both hollow steel pipes as much as possible.

  The hollow steel pipe and the strip steel material are made of a rust-proof steel material such as stainless steel (SS400).

  A building structure as a building can be constructed by using the steel frame building material 1 as a beam and / or a column that supports the ceiling and roof of the building frame.

  As shown in the embodiment of FIG. 10, a building structure can be constructed using the steel frame building material 1 as a side girder 71 of a staircase.

  As shown in the embodiment of FIGS. 11 and 12, the steel frame building material 1 can be used as an exterior structure such as a gate pillar or a nameplate.

The steel frame building material used in the present invention is configured in a truss shape having a width (or height) constituted by a combination of, for example, a hollow steel pipe with a thickness of 3 and a strip steel material with a thickness of 2.3 and a height of 150. Comparison of the proof stress between the beam according to the present invention and the H-200 × 100, SS400 class (JIS standard) H-section steel having the same size and length as follows is as follows.
Invented product Comparative product (H-section steel)
Section modulus (cm ³ ) 174.2 181
Sectional moment of inertia (cm ⁴ ) 1768.1 1810
Therefore, the steel building material of the present invention has a resistance of about 96%, which is almost equivalent to the comparative product. Moreover, when the weight is simply compared, the weight of the inventive product is 8.22 / m, whereas the weight of the comparative product is 26.67 / m, which is 3.25 times that of the inventive product. It is weight.

  Therefore, according to the connection structure of steel building materials according to the present invention, the proof stress is almost the same as H-shaped steel, though it can be extremely light compared to the conventional one, and it is rich in connection workability and transportability. Become. It is light and easy to handle, easy to transport, and has excellent connection workability on site. Therefore, it can be widely used as a substitute for the conventional H-section steel.

  Moreover, it is excellent also in the external appearance and designability, and it becomes a ventilation structure between the parallel hollow steel pipes 2 and 2, and wiring etc. become easy.

  The building structure using the steel structure building material connection structure according to the present invention has a steel structure that is integrated as a truss structure and integrated as a connection structure, and is excellent in durability and seismic resistance against external forces, and it can be configured to be lightweight. It can cope with soft ground effectively.

It is the perspective view which shows the cut model of the steel building materials used for this invention, a partial cross section, and a partial enlarged view. It is the front view (a) of a strip steel material, a top view (b), and a side view (c). (A), (b) is a perspective view which shows an example of the connection structure for connecting steel frame building materials horizontally. FIG. 3 is a front view showing an example of a connection structure of the present invention for connecting steel building materials orthogonally. (A), (b) is a perspective view which shows the other example of the connection structure for connecting steel frame building materials orthogonally. It is an indoor perspective view of the lightweight steel frame prefabricated house using the building material. It is a front view which shows the steel frame of the lightweight steel-frame large roof structure using the building material. It is a fragmentary perspective view which shows the row | line | column space | interval of the same pillar-roof beam. It is a front view which shows the steel frame of the dome shape large roof structure using the building material. It is a perspective view of the stairs using the building material. It is a perspective view of the gate using the building material. It is a perspective view of the outdoor installation type nameplate using the building material.

  FIG. 1 shows an embodiment of a steel building material 1 used in the connection structure of the present invention. This steel frame building material 1 is formed of a pair of parallel rectangular hollow steel pipes 2 having a square cross section and having a predetermined thickness, and a strip steel material 3 in which the hollow steel pipes 2 are connected with a predetermined distance therebetween. The steel building material 1 has a truss structure as a whole.

  The strip steel material 3 is slightly narrower than the length of one side of the hollow steel pipe 2, and a strip steel having a predetermined thickness is press-formed into a shape in which trapezoidal trapezoids of equal pitch are alternately continued in a substantially zigzag shape. Formed. The strip steel material 3 is obtained by fixing both sides of the trapezoidal top (bottom) 3a to the opposing surfaces of both steel pipes 2 by welding 4 so that both steel pipes 2 are main girder and the slope of the strip steel 3 The portion 3b is formed into a truss shape with a predetermined width W using an oblique girder and a length D of one side of the hollow steel pipe 2 as a width D. In the central part of the strip steel material 3, as shown in a cross section in a part of the figure, the rigidity of the inclined surface part 3b is improved by forming a reinforcing groove 3c in advance along the longitudinal direction at the time of press molding. is doing.

  In addition, although the figure shows the cut model of the steel frame building material 1, in the steel frame building material 1 obtained in practice, the hollow steel pipe 2 is made of a normal standard material and can be up to about 4 m.

  On the other hand, although the molding pitch of the strip steel material 3 is limited, as shown in the upper and lower ends of FIG. 1, the shape of both ends of the strip steel material 3 at the time of press working is the top (bottom) 3a. Are formed in such a way that they are halved, welded to both hollow steel pipes 2 in the longitudinal direction, and integrated with a pitch corresponding to the length of the hollow steel pipes 2.

  As shown in FIGS. 3, 4, and 5, the steel building materials 1 are joined to each other via a joint (joint) structure. Among these, FIG. 3 shows an example of a joint (joint) portion 10 for joining in the linear direction between the beams. As shown in FIG. 3 (a), the joint portion 10 has a fixed plate 12 made of a metal having a required thickness integrated in advance between the hollow steel pipes 2 by welding or the like at the joint end portions of the facing building materials 1 facing each other. When a pair of connecting plates 14 are pressed on both sides, bolts B are inserted into the bolt holes 12a and 14a formed on the respective sides, and nuts N are screwed from the back side, both ends as shown in FIG. The steel building materials 1 are connected in a straight line via the joint portion 10.

  The material thickness of the fixed plate 12 and the connecting plate 14 in the joint portion 10 is set to a thickness that satisfies the required bonding strength. Further, the number of the bolt holes 12a and 14a may be larger than that in the drawing in order to obtain the coupling strength. The nut N can also be a welded nut.

FIG. 4 is an embodiment of a connection structure according to the present application, and shows an example of a joint portion for column-beam joining. In this example, a connecting plate 114 is attached to both side surfaces of the end portions of the pair of steel building materials 1, 1 whose end portions are connected to each other so that the pair of steel building materials are continuous. Is fixed to the pair of steel building materials 1 and 1 so that the pair of steel building materials 1 and 1 are connected and fixed easily and integrally.
The connecting plate 114 can also be fixed by fixing means such as spot welding. In addition, the connection plate 114 can be adapted not only for fixing a column-beam connection in a perpendicular direction but also for fixing a beam-beam connection in a linear direction.

  FIG. 5 shows an example of the joint 10 for column-beam joining. In this example, one hollow steel pipe 2 on the top side of the steel frame building material 1 on the column side is cut out, and a bundle 18 made of hollow steel pipes of the same diameter is arranged between the hollow steel pipes 2 on the cut end face, and welding is performed. In addition to the integration, a fixed plate 20 is prepared which is welded in parallel to the bundle member 18, the cut-out end face of one hollow steel pipe 2, and the side face of the other hollow steel pipe 2.

  In addition, one hollow steel pipe 2 at the side end of the steel building material 1 on the beam side is cut out, and a bundle 18 is welded between the two hollow steel pipes 2, and between the bundle 18 and the other hollow steel pipe 2. A single fixed plate 22 is integrated by welding.

In assembling the joint portion 10 described above, the fixing plate 22 is joined to the fixing plate 20, the bolt B is inserted into the bolt holes 20a and 22a formed in both, and the nut is screwed in from the back surface. The steel frame building material 1 and the beam side steel frame building material 1 are connected in an orthogonal state.
The welding and fixing locations of the fixing plates 20 and 22 are provided in an extended portion from one end of the other of the parallel hollow steel pipes 2 and 2, whereby the steel building materials 1 and 1 are orthogonal to each other. Connection in a state becomes possible.

  In addition to the above description, there are joints for connecting beams to both sides of the column, joints for connecting beams to the three sides of the column, and joints for connecting beams to the four sides of the column. Each joint structure is suitable for joining with the other building material.

  Next, the specific structure of the lightweight steel frame prefabricated house made using the above steel building materials 1 is demonstrated using FIG. Since the steel building material 1 functions as a column and a beam, a description corresponding to each function and a code of the material itself will be given.

  This prefabricated house has a column 31, a large beam 32, and an eaves beam 33 made of the steel building material 1 configured as described above as main steel frames, and their joint ends are connected via joints 10.

  On the outer wall surface side of the prefabricated house, a plurality of intermediate pillars 34 made of hollow steel pipes 2 having the same cross-sectional diameter as the hollow steel pipes 2 of the building material 1 and pipe pillars 35 partitioning the side surfaces of the windows are arranged in the vertical direction at the lower part of the eaves beam 33 The inner insert 36 made of the hollow steel pipe 2, the window lintel 37 for partitioning the window portion up and down, and the window base (not shown) are arranged in the lateral direction, and the outer wall made of a color steel plate on the outer surface of these steel frames. In addition to a wooden window frame 41 and a glass window sash 42 on the outside of the inner space surrounded by the material 40 and surrounded by the pipe column 35, window lintel 38 and window cradle. A brace 43 made of a thick steel material is disposed between the eaves beam 34 and the main column 30 at a position that does not cover the window frame 41, and each crossing end is fixed by bolting.

  Further, in the ceiling portion, a plurality of small beams 44 made of the hollow steel pipe 2 are arranged in a direction orthogonal to the large beams 32, their joint ends are connected to the large beams 32 via brackets, and a ceiling material 45 is laid on the upper surface thereof. is doing.

  Therefore, the above-mentioned prefabricated houses made of lightweight steel frames are rich in strength and rigidity and greatly improved in earthquake resistance compared with the prefabricated houses made of conventional square steel pipe frames. It becomes. In addition, construction on soft ground is also possible.

  Moreover, since the steel building material 1 which is the said main steel frame is about 1 / 4.5 in weight compared with the conventional H-section steel, a foundation is sufficient for a foundation, Furthermore, as mentioned above, the housing construction of a house After completion, it can be used as a general residential building by performing interior work such as interior walls and interior ceilings.

Next, the steel frame structure of the steel structure building using the said steel frame building material 1 is demonstrated using FIGS. In FIG. 7, columns 51 made of the steel building material 1 are erected on both sides of the upper portion of the cloth foundation 50, and a roof beam made of the same steel building material is also provided on the column 51 via the joint portion 10. 52 are integrated, and the roof beams 52 are also integrated through the joint portion 10 at the ridge side ends.
Here, when the height of the column 51 is H and the roof slope is 30 °, the roof height is 1 / 2H, and the span of the entire building is 2H. In such an arrangement, if the column height is a maximum of 4 m in actual dimensions, the total height of the steel frame is 6 m and the span is 8 m, which is a steel frame having a large roof structure with a large span.

  Further, as shown in FIG. 8, the vertical arrangement interval L of the above-mentioned column-roof beam combination is about 2.7 m in actual size, and each combination is connected by an eaves beam 53 and a ridge beam (not shown). A strong steel frame is completed, and a wall structure, a roof material, and the like are provided inside and outside the steel frame to complete a large roof structure.

  In the above construction examples, no large beam or the like was provided, but the space may be partitioned into a space under the ceiling and a ceiling by the large beam and the ceiling material, and the eaves beam 53 and the building beam in FIG. Of course, it may be configured from one.

  FIG. 9 shows an arch-shaped roof beam instead of the linear roof beam 52 shown in FIGS. 7 and 8. This arch-shaped roof beam 60 is formed by bending the hollow steel pipe 2 so that the outer peripheral side and the inner peripheral side of the hollow steel pipe 2 are bent. With the same structure and dimensional relationship as in FIG. 7, except that the strip steel material 3 in which the trapezoid continues vertically along the curved surface is integrated by welding between the hollow steel pipes 2 with a constant spacing. Yes, the arrangement interval is the same as in FIG. 7, and the steel frame of the large-span arched roof is formed as described above.

  The above steel building material 1 can be used not only as a steel frame of a building but also as a fitting or an exterior structure. FIG. 10 shows a case where the steel building material 1 is applied to an indoor or outdoor staircase 70. The staircase 70 is between a pair of side girders 71 made of a steel building material 1 in which a lower floor and an upper floor are connected at a predetermined angle. In addition to fixing a tread plate 72 made of non-slip steel plates or the like arrayed at a fixed pitch to each other by welding or the like, a handrail 73 made of a round pipe is arranged in parallel with the upper part of the side beam 71 as required. And it can be used as a high-strength staircase.

  Further, FIG. 11 shows a case where it is applied to a gate. This gate 80 is simply a combination of a roof beam 82 in the shape of a large roof at the upper end of the gate pillar 81 made of the steel building material 1 and a name or the like at the lower center of the roof beam 82. The name plate 83 which is engraved is welded, and the lower end of the column 81 is integrally embedded in the concrete foundation 84.

  The gate 80 described above is mainly for the purpose of design, and is suitable as a gate for directing the entrance to the apartment or apartment site. The gate 80 is an outdoor structure and is usually directly exposed to wind and rain. Therefore, it is desirable that the gate 80 is made of a rust-proof steel material such as stainless steel and has a metallic texture as it is as a design appearance. Since the gate 80 is flat in the front-rear direction, the back side may be supported by a buttress (not shown).

  FIG. 12 shows a case where it is applied to an outdoor installation type nameplate. The nameplate 90 includes a longitudinal member 91 made of the building material 1, an oblique member 92 made of the building member 1 joined to the upper end of the longitudinal member 91 via the joint portion 10, and an owner name fitted to the tip of the oblique member 92. And a lower end of the vertical member 91 is embedded in the concrete foundation 94. The nameplate 90 is also for the purpose of modern art design arranged near the entrance of a house or the like, and is preferably made of a rust-proof metal material such as stainless steel as described above.

  Although various application examples have been described above, the steel building material 1 of the present invention can be applied to various lightweight steel frames by utilizing the characteristics of a truss structure, which is lightweight and has high strength, such as a rooftop. Supporting steel frames to support large-sized public notice signs, frames to support temporary stages such as scaffolding and support works, supporting frames for large racks such as factories and warehouses, other garages, storages, etc. It is suitable as a steel frame or frame for small structures.

1 Steel Building Materials 2 Hollow Steel Pipe 3 Strip Steel 3a Top (Bottom)
3b Slope portion 3c Reinforcing groove 4 Welding 10 Joint portion 10a Flange 12, 20, 22 Fixed plate 14,114 Connection plate 31,51 Column 32 Large beam 33 Eaves beam 50 Fabric foundation 52 Roof beam 51 Eaves beam 60 Arch roof beam 70 Stairs 71 Side girders 72 Treads 80 Gates 81 Gate pillars 82 Roof beams 83 Name plates 90 Outdoor nameplates 91 Vertical members 92 Diagonal materials B Bolts N Nuts

Claims (2)

A pair of parallel rectangular hollow steel pipes of a predetermined length and a zigzag shape with a continuous substantially trapezoidal shape or a continuous substantially V or W shape, the top and bottom of which are fixed integrally to the opposing surface of the double-angled hollow steel tube In the connection structure of one and the other steel building materials provided with a steel plate structure that can be transported as a whole,
Connecting plates are attached to both side surfaces of one and the other ends of the steel building materials to which the end portions are joined in a linear direction or a right angle direction so that the one and the other steel building materials are continuous. A connecting structure for a steel building material, wherein one and the other steel building materials are connected and fixed by fixing a connecting plate to the hollow steel pipe of the steel frame building material by a fixing means. The steel frame building material connection structure according to claim 1, wherein the fixing means comprises bolts or spot welding.

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