JP2007085016A - Steel-frame assembled member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steel-frame assembled member which is made of a high-strength steel plate, which can easily adapt to multisizing and multicharacterization by bending molding, and in which simply mass-producible and inexpensively obtainable steel-frame members are combined together, and bearing-joined together to be fastened together by means of a fastener. <P>SOLUTION: In the steel-frame member, the steel plate with a yield point of 600 N/mm<SP>2</SP>or more is bent in a width direction by bending molding so as to form a plurality of flat surfaces; the at least one flat surface serves as a fastened part; and a plurality of fastening holes are provided in a length direction. In the steel-frame assembled member, the steel-frame members or the steel-frame members combined with other steel-frame members are fastened together by bearing jointing using the high-strength fastener with a tensile strength of 1,700 N/mm<SP>2</SP>or more. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a steel assembly member mainly used as a column or a beam material when building a building.

Here, the steel member is defined by including the shapes of FIGS. 1, 10, 13, 15, 17, and 19 of the present invention including general H-shaped steel and square steel pipe. Further, the steel frame assembly member is obtained by binding the above steel frame members with a high-strength fastener using a high-strength fastener via a single flat surface as a binding portion and overlapping or attaching the binding portions. High-strength fasteners to be defined mean bearing resistance type high-strength bolts that do not introduce axial force, high-strength rivets, high-strength pins, and shear resistors such as self-drilling screws or hammers that do not open holes. The yield point includes a normal yield point and a 0.2% offset proof stress.
Further, as shown in FIG. 3, the support bearing is a joint type mainly expected for the support pressure of the contact portion between the fastener and the steel plate hole wall when the joined steel plates 1 ₁ , 1 ₂ are about to slip. Therefore, it is not necessary to introduce a high axial force of the fastener such as high-strength bolt friction bonding.

In general, steel members used for pillars and beams when building a building are currently hot-rolled H-section steel having a tensile strength of 400 to 500 N / mm ² and a yield point of about 235 to 325 N / mm ² and a welded assembly material ( H-shaped steel and square steel pipes are the mainstream.
(1) Hot-rolled H-section steel has the advantage that it has a high degree of completion because it is made up to the shape by a steel manufacturer, and the processing burden in the subsequent process is small. However, steel frames need to be of various sizes depending on the shape and scale, and it is necessary to prepare and maintain a large number of rolls and cope with roll recombination with a large work load. There is a problem that is large.
(2) In addition, the H-section steel obtained by welding assembly must be assembled by welding individual steel plates cut and processed according to the custom dimensions. There is a problem of needing. In addition, there is a problem that the cost is increased because a steel plate having weldability is used.
(3) A square steel pipe mainly used as a column material is obtained by cold bending a thick plate or a hot-rolled steel plate and seam welding, but there is a problem related to welding as in (2).
As described above, the conventional steel members are less than 400 N / mm ^{2 at the} yield point because it is necessary to ensure weldability as a steel material performance in addition to the problem that it is difficult to cope with the increase in size and characteristics at low cost. There is also a problem that building steel structures with sufficient strength cannot be secured at low cost, and the recent demand for higher strength and multi-characteristics has not been fully met. It is a fact.

(4) Once a rivet (4T class) assembly member combining angle steel and steel plate without using welding as disclosed in Fig. 1.2.4 on page 6 of Non-Patent Document 1, for example. was there. This is an assembled member that has been adopted because the shape steel manufacturing technology and the welding technology are immature, and the strength of both the steel material (400 to 500 N / mm ² ) and the rivet is low (tensile strength 400 N / mm ² class). In addition, a large number of rivets are required, and the rivet joining requires an operation such as heating and caulking, which requires a lot of labor. This is also the reason for switching to the current high-strength bolt.
(5) On the other hand, in recent years, as disclosed on page 14 of Non-Patent Document 2, the above problems are overcome by bending high-strength steel and assembling without using welding with 20T-class high-strength bolts and rivets. Attempts have also been made, but with regard to friction welding with 20T class high-strength bolts, overcoming delayed fracture by introducing a high axial force is a major issue, and its realization is not easy. In addition, the bearing support proposed as a workaround for this problem may not be effective depending on the strength and thickness of the steel sheet and the strength and diameter of the fastener. Research is required.
"Structural design of steel frame" October 25, 1991 2nd edition, 6th edition, published by Morihisa Fujimoto, publisher Nagasho Takashi, publisher Gihakudo Publishing Co., Ltd. Results of 2004 R & D Activities on “New Structural System Buildings Using Innovative Structural Materials” (announced on April 13, 2005) Presenter: New Structural System Building Promotion Liaison Committee, Chief Examiner Kimihiko Mogami (Company ) New City Housing Association, Japan Steel Federation, Japan Steel Structure Association Japan Steel Federation / Japan Steel Structure Association, 2004 “New Structural System Building Research and Development Committee” Report (April 2005) ) 14 pages.

  The present invention is a labor-saving for joining by bending a high-strength steel plate and binding steel members that can be easily produced in multiple sizes and multiple characteristics and can be mass-produced at low cost with a smaller number of high-strength fasteners. The present invention is to provide a steel assembly member that can be realized at low cost and can ensure a stable strength.

The present invention has been made to advantageously solve the above problems.
Claim 1 is a steel member having an open cross-section in which a plurality of flat surfaces are formed in the width direction by bending a steel plate having a yield point of 600 N / mm ² or more, and at least one flat surface is used as a binding portion. A steel frame characterized by being bonded at a plurality of locations in the lengthwise direction by bearing joining with a high-strength fastener having a tensile strength of 1700 N / mm ² or more and 2600 N / mm ² or less through overlapping or accessory plates It is an assembly member.
A second aspect of the present invention is the steel assembly member according to the first aspect, wherein the ratio of the shaft diameter of the high-strength fastener to the thickness of the steel member is 0.5 to 3.0.
A third aspect of the present invention provides a method according to any one of the first and second aspects, in which the steel members to be bound are arranged with their tips shifted so that the unbound portion protrudes from the tip portion on at least one side, and overlapping binding is performed. The high-strength fasteners are used to bind the parts together, and the unsealed joints that protrude are joined together from the length direction of the other steel members. A steel frame assembly member characterized by being formed into a predetermined length by binding.
A fourth aspect of the present invention is the steel assembly member according to the third aspect, wherein at least one of the bound steel members has different material characteristics and shape characteristics.

The steel assembly member of the present invention can be easily mass-produced by bending a high-strength steel plate with a yield point of 600 N / mm ² or more, and can be manufactured at low cost in a wide range of sizes and characteristics. Since it is not necessary to secure weldability, the steel plate used as a steel member is not only high-strength but also fire-resistant and lightweight. It is easy to upgrade various functions, and as a result, it is possible to ensure a wide range of characteristics required as a steel assembly member.
The steel member, a plurality combination, by a tensile strength of match spelled by Bearing joined by high-strength fasteners Bearing Shear format consisting of 1700 N / mm ² than high strength steel, the amount of high-strength fasteners It is possible to obtain a high-strength and stable steel assembly member while reducing the labor and reducing the cost.
At this time, the thickness ratio of the steel member to the shaft diameter of the high-strength fastener is set within a range of 0.5 to 3.0, and the strength of the steel member and the strength of the high-strength fastener are effectively exhibited in a balanced manner. It is possible to ensure stable and efficient.
Moreover, in the steel frame assembly member, a plurality of steel frame members are supported and joined together with a high-strength fastener, so that the material characteristics and cross-section (shape) characteristics of the steel frame member are efficiently combined according to the load distribution of the use site. It becomes easy. In this case, the length of the steel frame member and the method of binding the binding portions can be devised, and the length direction can be easily assembled only by binding.
Moreover, since this steel frame assembly member is obtained not by welding but by dry assembly using a fastener, disassembly and reuse are easy.

The steel frame member forming the steel frame assembly member of the present invention was formed by cutting a steel plate having a yield point of 600 N / mm ² or more according to a desired shape and size, and bending it in the width direction by bending to form a plurality of flat surfaces. It consists of an open cross-section and is made of high-strength fasteners in the length direction of at least one flat surface. It can be easily mass-produced at low cost by easily supporting multiple sizes and multiple characteristics. Is.
The steel frame assembly member of the present invention is a high strength with a tensile strength of 1700 N / mm ² or more and 2600 N / mm ² or less by combining a plurality of steel members or a combination with a shape steel, with a binding portion directly or via a plate. Fasteners (supporting high-strength bolts that do not introduce axial force, high-strength rivets, high-strength pins, self-drill screws that do not open holes, and shearing resistors such as driving rods, hereinafter referred to as “high-strength fasteners”. ) Are joined together by the support pressure joining to form a steel frame assembly member.

Compared to the case of using a steel material (section steel) having a yield point of less than about 600 N / mm ² that is usually used, the steel assembly member of the present invention using this steel member can be significantly strengthened. It is possible to cope with the required member strength by reducing the cross-sectional area (reducing the amount of steel used).
Since the steel frame assembly member of the present invention is assembled by binding the steel frame members with a high-strength fastener, the steel plate forming the steel frame member does not need to ensure weldability, so that not only high strength but also fire resistance and light weight are achieved. It is easy to upgrade various functions of steel materials such as aging, and it is possible to secure a wide range of properties required for steel members.
In the case of binding through the accessory plate, the accessory plate preferably has a yield point equal to or higher than that of the steel member.

The reasons for limiting the present invention will be described below.
The steel assembly member of the present invention is assembled by binding the steel member by bearing joining using a bearing / shear type high-strength fastener, which is formed by a steel plate having a yield point of 600 N / mm ² or more. It is characterized by the fact that the strength is increased, the number of high-strength fasteners used is minimized, and welding is not required.
That is, when the yield point is less than 600N / mm ^2, to the members of 400 N / mm ² being currently used, but not be expected decrease in substantial steel weight, significant when the 600N / mm ² or more Since the amount of steel used can be reduced, it is limited to using a steel member having a yield point of 600 N / mm ² or more.
The upper limit is not specified, but depending on the site of use, high tension may always be applied continuously. In this case, there is a concern that delayed fracture will occur, so there is no concern that delayed fracture will occur. It is preferable to select a steel member having strength and having a yield point of 600 N / mm ² or more.
Another feature is to use a bearing / shear type high strength fastener having a tensile strength of 1700 N / mm ² or more in order to maximize the effect of increasing the strength.
When using a bearing / shear type high-strength fastener with a tensile strength of less than 1700 N / mm ^2, it is possible to secure a certain degree of joint strength by increasing the number used, but the joint construction burden increases and the steel member As a result, it is not possible to sufficiently strengthen the joint strength. Therefore, even if the steel member is made of a steel plate having a yield point of 600 N / mm ² or more to increase the strength, the effect cannot be fully enjoyed.

It is conceivable to bind this steel member by friction bonding using a high-strength bolt having a tensile strength of 1700 N / mm ² or more. However, in order to introduce an axial force to ensure a sufficient frictional force, a high strength is always used. When high tension is applied to a force bolt, there is a problem that delayed fracture occurs and the bolt breaks. As a result of lowering the tightening axial force level, the tensile strength of the high strength bolt is 1700 N / mm ² or more. The joint strength cannot be secured.
On the other hand, in the bearing connection using the high-strength fastener of the bearing / shear type, the problem of delayed fracture is solved, and the sufficient joint strength corresponding to the tensile strength of 1700 N / mm ² or more of the high-strength fastener. Can be secured. In addition to the reduction in the number of high-strength fasteners due to increased strength, the advantage of bearing support is that there is no need for frictional surface treatment, and no need for bolt axial force and management.

For these reasons, in the steel frame assembly member of the present invention, a steel frame member made of a steel plate having a yield point of 600 N / mm ² or more is used in a bearing / shear type with a tensile strength of 1700 N / mm ² or more and 2600 N / mm ² or less. It is an important requirement to bind by bearing support using a high-strength fastener.
However, the joint strength of bearing joints using bearing / shear type high-strength fasteners is the contact surface of the steel member and the shaft of the high-strength fastener (spell hole surface) and the bending / shearing surface strength of the high-strength fastener shaft. Therefore, it depends on the strength of the steel member or high strength fastener and the thickness of the steel member or the shaft diameter of the high strength fastener. Depending on these combinations, it is necessary to consider that the strength of the steel member and the high-strength fastener may be meaningless.
Therefore, if the tensile strength of the high-strength fastener is less than 1700 N / mm ² , the effect of increasing the strength cannot be enjoyed sufficiently, so that it was set to 1700 N / mm ² . If it exceeds 2600N / mm ^2, the effect is saturated, so the higher the cost, the was 2600N / mm ² or less.

Furthermore, through various studies, the present inventors used a steel frame member made of a thick steel plate having a yield point of 600 N / mm ² or more and a high-pressure fastener of a bearing / shear type having a tensile strength of 1700 N / mm ² or more. In order to fully exhibit both strengths when binding by bearing support, it is effective to set the ratio of (high-strength fastener shaft diameter) / (steel member thickness) to the following range. I confirmed that there was.
(1) In the case of single shear: 1.0 to 3.0
(For example, when steel members are stacked and bound directly)
(2) In the case of two-sided shear: 0.5 to 1.5
(For example, when steel members are bound together via an abutment plate on both sides)
In (1) and (2), when the value is below the lower limit value, the high-strength fastener receives a large shearing force and bending force, and the bearing joint strength corresponding to the material strength of the high-strength fastener cannot be exhibited. If the upper limit is exceeded, the strength of the high-strength fastener against shearing force and bending force will increase, but the bearing strength will be commensurate with the strength of the material of the high-strength fastener due to the bearing failure on the steel member side. Can not demonstrate.
Here, it is conceivable to cope with the increase in diameter without changing the material strength of the high-strength fastener, but this is not a good measure because it causes a decrease in the proof stress of the steel member due to the lack of the spell hole. Therefore, the ratio of (shaft diameter of high strength fastener) / (plate thickness of steel member) was set to 0.5 to 3.0.

The steel frame assembly member of the present invention basically means a combination of a plurality of these steel frame members, or a steel frame member (for example, a member including a shape steel, a plate-like body, or various assembly members). Although it is formed by binding by combined bearing bonding, it is not a requirement that all steel members have the same cross-section, size, and material characteristics. Depending on the section and size of the steel member to be formed in advance, the part to be used (load direction / distribution, etc.), required characteristics, etc. Since it is assembled by using it, it becomes easy to form parts of different sizes and different characteristics.
As a method of binding in this case, the steel members to be combined are arranged by shifting the tip so that the unbonded portion protrudes from the tip portion on at least one side, and the overlapping binding portions are spelled with a high-strength fastener. At the same time, fit the protruding end of the steel part with another open cross-section into the protruding part and join the overlapped part with a high-strength fastener. Thus, a steel assembly member having a predetermined length can be easily obtained.

By binding in this way, it becomes possible to easily form a steel assembly member having a desired length by using only the same high-strength fastener and without using a metal fitting such as a accessory plate.
For example, when the steel assembly member is a pillar with a square closed cross section, there is a case where a high-strength bolt is used to join a metal fitting for attaching a steel beam to the side surface. Will also be easier. In addition, in order to join a metal fitting with high strength bolts, a bolt hole is made in advance in the steel member forming this region, and a nut is fixed to the inside of the steel member, or a high strength bolt is inserted from the inside of the bolt hole. Pre-joining work such as holding can be done easily.

[Examples of steel members]
An example of a steel member forming the steel assembly member of the present invention will be described below with reference to FIG.
The steel frame member 1 of Example 1 has a yield point of 600 N / mm ² or more with a thickness of more than 6 mm, a high strength steel sheet s that does not guarantee yield ratio (yield point / tensile strength) and weldability. By bending at an angle of about 1/5 of the width from the end, it is bent into an angle α (here 45 degrees) to form a groove shape comprising three flat surfaces of the inclined flanges 1a and 1b and the web 1u. Then, in order to use the flanges 1a and 1b as a binding portion by bearing support with a high-strength fastener, this is a steel member having an open cross section in which a row of binding holes 1o are provided in the length direction of the flanges 1a and 1b.
As a high-strength fastener, a self-drill screw or a driving rod may be used. In that case, it is not essential to provide the binding hole 1o in advance as in the case of using a bolt.

When a plurality of steel members 1 are bound together to form, for example, an architectural steel structure (column material) having a square cross section (including a polygonal cross section), a high-strength bolt is used as a joint hardware to join, for example, an H-shaped steel beam. May join. In such a case, a bolt hole is provided in the web 1u of the steel member 1 that forms a part to which the metal fitting is to be joined in the same manner as the binding hole 1o, and a nut is fixed to the inner side as necessary. Can also be considered. Moreover, the web 1u of the steel member 1 may be used as a binding unit, and the web 1u and the inclined flanges 1a and 1b may be used as a binding unit.
Here, the inclined flanges 1a and 1b on both sides are formed by bending a position corresponding to a position of about 1/5 of the width of the steel sheet by bending at an angle α (here 45 degrees). 1u is about 3/5 the width of the steel plate, but the width ratio of the web 1u, the inclination angle α of the flange, etc. of the inclined flanges 1a, 1b are not fixed, and the steel member 1 is bound together. It is determined according to the cross-sectional shape, size, characteristics, etc. of the steel assembly member to be formed.

[Example of steel frame assembly member (1A)]
FIGS. 2A and 2B show examples of the steel assembly member of the present invention using the same steel member as the steel member 1 shown in FIG.
This steel frame assembly member 1A is a steel frame assembly member having a square cross section (closed cross section) formed by combining _four steel frame members 1 ₁ , 1 ₂ , 1 ₃ , and 1 ₄ provided with spell holes 1o in inclined flanges 1a and 1b. It is a steel assembly member obtained by superimposing the binding portions of the steel members 1 having open cross sections adjacent to each other outside the four corners, inserting the high-strength fasteners 6 into the binding holes 1o, and supporting and joining them.
The ratio of (shaft diameter of high-strength fastener) / (plate thickness of steel member) in this steel assembly member 1A was 1.0.

Bearing bonding employed in the present invention, for example, as shown in FIG. 3, superimposed steel member diameter than the spelling hole 1o inclined flange 1b and 1a of the normal (shown in 1 ₁ and 1 ₂ in this case) Then, a support / shear type high strength fastener 6 (here, using a support type high strength bolt as shown in FIG. 3) is inserted and supported on the hole surface of the binding hole 1o and the high strength fastener 6 shaft. This is a joint in which pressure and shear force are applied, and it is a joint that does not require the introduction of a tightening axial force such as frictional joining or tensile joining. As the high-strength fastener 6, a high-strength rivet, a high-strength pin, or a self-drill screw or a driving rod that does not require a spelling hole can be used.
Since the steel frame assembly member 1A of the first embodiment has four steel frame members bound together outside the corner portion, the joining work is easy even if any high-strength fastener is used, and the binding portion is a reinforcing portion. Therefore, the strength of the steel frame assembly member can be secured stably. This steel frame assembly member 1A is mainly used as a pillar material.
The steel members do not have to be made of steel plates of the same material (characteristics), but the materials can be used properly or the thickness can be selected using the same material depending on the strength required for the formation site of the steel assembly member 1A. You can also.

[Example of steel assembly member (1B)]
FIG. 4 shows an example of a steel assembly member of the present invention using a steel member similar to the steel member 1 shown in FIG.
Two steel member ₁ used in this steel assembly member _1B, 1 _2, as well as the steel member 1 used in steel construction elements 1A, a groove-shaped comprising a flat surface of the three faces of the inclined flange 1a, 1b and web 1u Although the steel plate member has an open cross section formed in the above, a steel frame having an open cross section in which two rows of binding holes 1o are provided in the length direction of the web 1u in order to use the web 1u as a binding portion that is supported and joined by the high-strength fastener 6. It is a member.
The ratio of (high-strength fastener shaft diameter) / (steel member thickness) in this steel assembly member 1B was 1.2.
This steel frame assembly member 1B is a combination of _two steel frame members 1 ₁ , 1 ₂ , the back surface of the web 1 u is overlapped and bound together by a high strength fastener 6, and the two sheets of web 1 u are overlapped with each other at the front end. This is a steel frame assembly member having an open cross section formed with a letter-shaped flange.
This steel frame assembly member 1B uses a bearing type high-strength bolt as the high-strength fastener 6 here, but has an open cross section, so that any high-strength fastener can be easily joined. The steel assembly member 1B steel member 1 _1, 1 ₂ to form a steel plate s, high strength fastener 6, description will use the same as the steel assembly member 1A will be omitted. In addition, it is not necessary to form each steel member with a steel plate of the same material (characteristics), and depending on the strength required for the formation site of the steel frame assembly member 1B, the material may be used properly or the thickness may be selected using the same material. You can also This steel assembly member 1B is mainly used as a column material or a beam material.

[Example of steel frame assembly member (1C)]
FIG. 5 shows an example of a steel assembly member of the present invention using a steel member similar to the steel member 1 shown in FIG.
This steel assembly member 1C is a polygonal cross-section (closed cross-section) steel assembly member formed by combining _four steel members 1 ₁ , 1 ₂ , 1 ₃ , and 14. Splicing of the steel member 1 is performed via an accessory plate 8 having a binding hole (not shown) that abuts from the inner side across the binding portions by abutting the ends of the binding portions of the inclined flanges 1a and 1b. It is a steel assembly member obtained by inserting the high-strength fastener 6 into the hole 1o and the binding hole of the accessory plate 8 and binding them together by pressure bearing joining.
The accessory plate 8 used here has characteristics equal to or higher than those of the steel member, and is formed of an elongated rectangular steel plate s having substantially the same length as that of the steel member 1, and includes the inclined flanges 1a and 1b of the adjacent steel members 1. Two rows of spelling holes (not shown) are provided so as to correspond to the spelling holes 1o.
The ratio of (shaft diameter of high-strength fastener) / (steel member thickness) in this steel assembly member 1C was 0.5. However, although not added in FIG. 5, the case where the accessory plate 8 is on the outside is included.

In this steel assembly member 1C, the accessory plate 8 is brought into contact with the inner side across the binding portions of both of the butted steel members (for example, 1 ₁ , 1 ₂ ), and the high-strength fastener 6 is attached from the inner side. A structure is adopted in which the eight holes are inserted into the spell holes 1o of the steel member (for example, 1 ₁ , 1 ₂ ) and nuts are tightened on the outside.
Here, at least in the final stage of forming the closed cross section, one side of the accessory plate 8 is supported and joined by a high-strength fastener 6 inserted from one side of the accessory plate 8 from the inner side. The high-strength fastener 6 is inserted and protruded from the inner side of the binding hole on the side, and the high-strength bolt 6 is inserted into the other steel member through the binding hole 1o to abut against the accessory plate 8, A high-strength fastener 6 projecting to the outside is nut-tightened to support and join.
Therefore, in order to insert and hold the high strength fastener 6 in the binding hole of the accessory plate 8 from the inside, the high strength fastener 6 is press-fitted with a slight external force so as not to fall off. (For example, consider inserting a thin plate piece between the binding hole of the accessory plate 8 and the high-strength fastener 6).
Since the steel plates s and the high strength fasteners 6 forming the steel members of the steel frame assembly member 1C are the same as those of the steel frame assembly members 1A, description thereof will be omitted. In addition, it is not necessary to form each steel member with a steel plate of the same material (characteristics). Depending on the strength required for the forming part of the steel assembly member 1C, the steel material may be used properly, or the thickness may be selected using the same material. You can also. This steel frame assembly member 1C is mainly used as a column material or a beam material in combination with other steel frame members.

[Example of steel assembly member (1D)]
FIG 6 (a), (b), the present invention in combination with H-beams 9 obtained the steel member 1 and the same steel member 1 _1, 1 ₂ of Figure 1 in the rolling and welding assembly are other steel member This shows an example of a steel assembly member.
The two steel members 1 ₁ , 1 ₂ used in this steel assembly member 1D are joined together to support and join the web 1u with a high-strength fastener 6 in the same manner as the steel member 1 used in the steel assembly member (1B). Therefore, the steel member is provided with a binding hole 1o in the length direction of the web 1u.
The two steel members 1 ₁ , 1 ₂ used in the steel assembly member 1D are made of a material stronger than the H-section steel 9 and are reinforced in combination with the H-section steel 9. flanges 9a, the outer surface side of 9b, is intended to fit spelled by Bearing joined by high-strength fasteners 6 an inner surface side of the steel member of greater width than the flange width 1 _1, 1 ₂ of the web 1u abuts, steel The members 1 ₁ , 1 ₂ form flanges 9a, 9b wider than the width of the H-section steel 9 and the inclined flanges 1a, 1b at the side ends form flat surfaces inclined inward to enhance strength. It is a steel assembly member that becomes an H-shaped steel. It is also possible to provide a spelling hole on a flat surface formed by the inclined flanges 1a and 1b to form a stitching portion with another steel member.

The ratio of (high-strength fastener shaft diameter) / (steel member thickness) in this steel assembly member 1D was 2.0.
This steel assembly member 1D uses a high-strength bolt as the high-strength fastener 6 here, but since it has an open cross section, it can be easily joined using any high-strength fastener.
The steel plate s and the high-strength fastener 6 that form the steel member 1 of the steel assembly member 1E are the same as those used for the steel assembly member 1A, and a description thereof will be omitted. Each steel member 1 _1, 1 ₂ and H-beams 9 forming the irregular H-shaped steel is, all be of the same material properties, may be of different material properties. The steel frame assembly member 1D is mainly used as a column material or a beam material.

[Example of steel assembly member (1E)]
FIG. 7 shows an example of a steel assembly member of the present invention in which steel members 1 ₁ and 1 ₂ similar to the steel member 1 of FIG. 1 are combined with channel steel 12 obtained by rolling or bending, which is another steel member. It is a thing.
The steel members 1 ₁ and 1 ₂ used in the steel assembly member 1E are used as a binding portion for supporting and joining the web 1u with the high-strength fastener 6 in the same manner as the steel member 1 used in the steel assembly member (1B). The steel member is provided with a binding hole 1o in the length direction of the web 1u.
The steel members 1 ₁ , 1 ₂ are contact-bonded by a high-strength fastener 6 by abutting the inner surface side of the web 1 u having a width larger than the flange width on the outer surface side of both flanges 12 a, 12 b of the channel steel 12. Thus, the steel members 1 ₁ , 1 ₂ are flanges, and the web 12 u of the channel steel 12 is a deformed H-section steel. The ratio of (shaft diameter of high-strength fastener) / (and thickness of steel member and channel steel) in this steel assembly member 1E was 2.2.
Although this steel frame assembly member 1E uses a high-strength bolt as the high-strength fastener 6 here, it has an open cross section, so that any high-strength fastener can be used for easy joining.
Incidentally, the steel sheet s to form the steel frame member 1 _1, 1 ₂ of the steel assembly member 1E, high strength fastener 6, so use the same as the steel assembly member 1A, description will be omitted. Further, the steel members 1 ₁ , 1 ₂ and the grooved steel 12 forming the deformed H-shaped steel may all have the same material characteristics or may have different material characteristics. The steel assembly member 1E is mainly used as a pillar material or a beam material.

[Example of steel frame assembly member (1F)]
Figure 8 shows the steel frame assembly member of the present invention in combination with steel member 1 and the same steel member 1 _1, 1 ₂ of Figure 1 and the deformed Z-shaped steel 13 is another steel member.
The steel members 1 ₁ and 1 ₂ used in the steel assembly member 1F are used as a binding portion for supporting and joining the web 1u with the high-strength fastener 6 in the same manner as the steel member 1 used in the steel assembly member (1B). The steel member is provided with a binding hole 1o in the length direction of the web 1u.
The steel member 1 _1, 1 _2, both flanges 13a of the respective irregular Z shaped steel 12, the outer surface of the 13b, and the inner surface of the web 1u of greater width than the flange width high strength fastener 6 abuts Bearing the combined spelling by bonding, is a web 13u of steel members 1 _1, 1 ₂ and flange irregular Z-shaped steel 13 that the irregular H-beams to the web.
The ratio of (shaft diameter of high-strength fastener) / (plate thickness of steel member and deformed Z-shaped steel) in this steel assembly member 1F was 2.5.
Although this steel frame assembly member 1F uses a high-strength bolt as the high-strength fastener 6 here, since it has an open cross-section, it can be easily joined using any high-strength fastener.
Incidentally, the steel sheet s, high strength fasteners 6 to form a steel frame member 1 _1, 1 ₂ of the steel construction elements. 1F, description will use the same as the steel assembly member 1A will be omitted. Each steel member 1 _1, 1 ₂ and deformed Z-shaped steel 13 to form the deformed H-shaped steel is, all be of the same material properties, may be of different material properties. The steel assembly member 1F is mainly used as a pillar material or a beam material.

[Example of steel frame assembly (1G)]
FIG. 9 shows an example of a steel assembly member of the present invention using a steel member similar to the steel member 1 of the first embodiment.
The steel assembly member 1G is a steel assembly member having a substantially square cross-section (closed cross section) formed by combining _four steel members 1 ₁ , 1 ₂ , 1 ₃ , and 14, and adjacent steel members (for example, 1 ₁ 1 ₂ ) of the inclined flanges 1 a and 1 b are overlapped, and the high-strength fastener 6 is used to bind them by supporting pressure.
The ratio of (shaft diameter of high-strength fastener) / (plate thickness of steel member) in this steel assembly member 1G was 0.8. However, although not added in FIG. 14, the case where the accessory plate 8 is outside is included.
In this steel frame assembly member 1G, the binding portions of the inclined flanges 1a and 1b of adjacent steel frame members (for example, 1 ₁ , 1 ₂ ) are overlapped and directly bound with a high-strength fastener, and the attachment plate can be omitted. For example, joining construction is simple compared with the steel assembly example 1C.
The steel plate s and the high-strength fastener 6 that form the steel member of the steel assembly member 1G are the same as those used in the steel assembly member 1A of the first embodiment, and a description thereof will be omitted. Moreover, it is not necessary to form each steel member with the same material (characteristic) steel plate s, and according to the strength required for the use site, the material can be used properly, or the thickness can be selected using the same material. The steel assembly member 1G is mainly used as a pillar material.

[Examples of steel members]
Another example of the steel member forming the steel assembly member of the second embodiment of the present invention will be described with reference to FIG.
This steel frame member 2 is bent twice by bending the steel sheet s at an angle α (45 degrees in this case) at a position of about 2/7 of the width from both ends, and further folding it at an angle β (90 degrees here). Steel plate member having an open cross section formed in a deformed groove shape composed of a bent flange having two flat surfaces 2a and 2c, 2b and 2d, and five flat surfaces of the web 2u. Here, since the flat surfaces 2a and 2b on the web 2u side of the bent flange are used as a binding portion that is supported and bonded by a high-strength fastener, the binding hole 2o is formed in the length direction thereof. It is the steel member of the open section provided in 1 row. However, a self-drill screw, a driving rod or the like may be used as the high-strength fastener, and the spelling hole 2o may not be necessary.
The steel plate s that forms the steel member 2 is the same as the steel member 1 of the first embodiment, and a description thereof will be omitted.

When a plurality of the steel frame members 2 are bound to form, for example, a steel frame assembly member (column material) having a square cross section (including a polygonal cross section), for example, a joint metal is bolted to join an H-shaped steel beam. Sometimes. In such a case, it can be considered that a bolt hole is also provided in the web 2u of the steel member 2 that forms the part to which the metal fitting is to be joined in the same manner as the binding hole 2o.
The web 2u of the steel member 2 may also be used as a binding portion, or only the web 2u of the steel member 2 may be used as a binding portion. In this case, the binding hole 2o is provided only in the web 2u.
Note that the width of the bent flanges on both sides, the width ratio of the web 2u, and the angles α and β forming the two flat surfaces 2a and 2c, 2b and 2d of the bent flange are not fixed. 2 is determined according to the cross-sectional shape and size of the steel frame assembly member formed by binding two pieces together.

[Example of steel frame assembly member (2A)]
FIGS. 11A and 11B show examples of the steel assembly member of the present invention using the steel member of FIG.
This steel assembly member 2A is a steel assembly member having a square cross section (closed cross section) formed by combining _four steel member 2 (2 ₁ , 2 ₂ , 2 ₃ , 2 ₄ ), and is adjacent to the outside of the four corners. A steel assembly member obtained by overlapping the flat surfaces 2a and 2b on the web 2u side of the bent flange of the matching steel member 2 with the binding portions overlapped, inserting the high-strength fastener 6 into the binding hole 2o, and binding them by support joint. is there.
Since this steel frame assembly member 2A binds adjacent steel frame members 2 on the outside of the corners, joining is easy even if any high-strength fastener is used, and the binding section also functions as a reinforcing section. Therefore, the strength of the steel frame assembly member can be secured stably.
The ratio of (high-strength fastener shaft diameter) / (steel member thickness) in the steel assembly member 2A was 1.0.
The steel plate s and the high-strength fastener 6 that form the steel member 1 of the steel assembly member 2A are the same as those used in the steel assembly member 1A of the first embodiment, and a description thereof will be omitted. Each steel member does not need to be formed of steel plates s of the same material (characteristics), and can be used properly according to the strength required for the portion to be used, or can be made of the same material with different thicknesses. This steel frame assembly member 2A is mainly used as a pillar material.

[Example of steel assembly member (2B)]
12 (a) and 12 (b) show an example of a steel assembly member of the present invention in which two steel members 2 ₁ and 2 ₂ similar to the steel member shown in FIG. 10 are combined with a deformed X-shaped steel assembly member 7. Is shown.
The steel members 2 ₁ and 2 ₂ used in the steel assembly member 2B have the same basic shape as the steel member shown in FIG. 10, but the flat surfaces 2c and 2d on the distal end side of the bending flange are joined together. Therefore, it is a steel member having an open cross section in which one row of spelling holes 2o is provided in the length direction.
Further, the modified X-shaped steel frame assembly member 7 has a basic shape similar to that of the steel frame assembly member example 1B shown in FIG. 4 of the first embodiment, and the steel member members 1 ₁ , 1 ₂ having a spell hole in the web 1u. The web 1u is overlapped with the back side of the web 1u and bound together by pressure bonding with a high-strength fastener 6 (here, one row). V-shaped flanges 7a and 7b are formed on both sides, It is a steel frame assembly member provided with a row of spell holes in the length direction.

This steel frame assembly member 2B is connected to the bending flanges of the steel frame members 2 ₁ , 2 ₂ at the binding portions outside the tips of the V-shaped flanges 7a, 7b formed on both sides of the modified X-shaped steel frame assembly member 7, respectively. The insides of the flat surfaces 2c and 2d on the front end side are brought into contact with each other, and are joined together by bearing support joining with a high-strength fastener 6, and a V-shaped flange 7a of a deformed X-shaped steel frame assembly member 7; A substantially triangular closed cross section is formed on both sides of the modified X-shaped steel frame assembly member 7 by 7b and the steel frame members 2 ₁ and 2 ₂ .
The ratio of (high-strength fastener shaft diameter) / (steel member thickness) in the steel assembly member 2B was 2.3.
The steel plate s and the high-strength fastener 6 that form the steel frame member 2 of the steel frame assembly member 2B and the deformed X-shaped steel frame assembly member 7 are basically the same as those of the steel frame assembly member 1A. Omitted. Each steel member does not need to be formed of steel plates s of the same material (characteristics), and can be used properly according to the strength required for the portion to be used, or can be made of the same material with different thicknesses. This steel frame assembly member 2B is mainly used as a combination column material or beam material with other steel frame members.

[Examples of steel members]
FIG. 13 shows another example of a steel member that forms the steel assembly member of Example 3 of the present invention.
This steel frame member 3 is formed by cutting a steel sheet s into a rectangle and bending it to form an angle α (here 45 degrees) at a position about 2/7 from the end on one side, and further angle β (here In this case, a bent flange having two flat surfaces 3a and 3c formed by bending twice is formed, and on the other side, an angle α (here, approximately 1/7 of the width from the end) is formed. 45 degrees) is a steel plate member with an open cross section having four flat surfaces of 3a, 3c, 3b, 3u in an asymmetric cross section formed by bending and forming an inclined flange 3b, and each flat surface can be used as a binding portion. However, in this case, since the inclined flanges 3ac and 3b are used as a binding portion for supporting and joining, the one side is bound to the flat surface 3c of the bent flange and the other side is bound to the inclined flange 3b in the length direction. Steel frame with one row of holes 3o It is.
The steel plate s forming this steel member example 3 is the same as each steel assembly member of the first embodiment, and a description thereof will be omitted.
Further, since the formation of the binding hole 3o is the same as that of the steel member example 1 of the first embodiment, the description thereof is omitted.
It should be noted that the width of the bent flanges on both sides, the width ratio of the web 3u, and the angles α and β forming the two flat surfaces 3a and 3c and 3b of the bent flange are not fixed. It is determined according to the cross-sectional shape and size of the steel frame assembly member formed by binding.

[Example of steel assembly member (3A)]
14 (a) and 14 (b) show an example of the steel assembly member of the present invention of Example 3 using the steel member of FIG.
This steel assembly member 3A is a steel assembly member having a polygonal cross section (closed cross section) formed by combining four steel members 3 (3 ₁ , 3 ₂ , 3 ₃ , 3 ₄ ) of the open cross section of Example 3; On the inner side, the flat surface 3c at the tip of the inclined flange 3a of the adjacent steel member 3 is directly superimposed on one side, and the inclined flange 3b of the adjacent steel member 3 is abutted as a binding portion on the other side. It is a steel frame assembly member obtained by pressing the high-strength fastener 6 into the binding hole via the accessory plate 8 and bearing joint.
The ratio of (high-strength fastener shaft diameter) / (steel member thickness) in this steel assembly member 3A was 2.8.
In the steel frame assembly member 3A having a closed cross section according to this embodiment, the binding portion of the flat surface 3c at the tip of the inclined flange 3a forming the bending flange is on the inner side, and the accessory plate 8 is used at the abutting portion of the inclined flange 2b. . The accessory plate 8 may be of the same strength level as the steel member 3.
In addition, since the high strength fastener 6 used by this steel frame assembly member 3A uses the same thing as the steel frame assembly member 1A of Example 1, description is abbreviate | omitted. In addition, it is not necessary to form all steel members with steel plates s of the same material (characteristics). Depending on the strength required for the site of use, the steel material can be used properly, or the same material can be used with different thicknesses, and multiple pieces can be bound together. It can also be used. The steel assembly member 3A is mainly used as a pillar material.

[Examples of steel members]
FIG. 15 shows another example of the steel member forming the steel frame assembly member according to the fourth embodiment of the present invention.
This steel frame member 4 is obtained by cutting a steel plate s into a rectangle and bending it at an angle θ (90 degrees here) at a position near the center of the width by cold roll forming to form two flat surfaces 4a and 4b at right angles. The basic shape is formed by further bending one flat surface, here the tip of 4b, to form a flat surface 4c parallel to the one flat surface 4b and forming a step surface corresponding to the thickness t of the steel sheet s. It is a steel plate forming material having an L-shaped open section.
In order to make the front end portion of one flat surface 4a of this steel sheet forming material and the flat surface 4c, which is a stepped surface on the front end side of the other flat surface 4b, serve as a binding portion that is supported and joined by a high-strength fastener. A steel member 4 having an open cross-section is provided in which the binding holes 4o are provided in one row at equal pitches in the length direction in the binding portion of the surfaces.
The steel plate s forming the steel frame member 4 is the same as the steel frame member 1 of the first embodiment, and a description thereof will be omitted.

[Example of steel assembly member (4A)]
16 (a) and 16 (b) show an example of the steel assembly member of the present invention of Example 4 using the steel member of FIG.
The steel assembly member 4A is a steel construction elements of rectangular cross-section comprising a combination of steel members 4 open cross section (closed cross section), for example, steel members 4 ₁ of the flat surface 4c is a stepped surface and the steel member 4 ₂ of the flat surface 4a, also a flat surface 4c and the flat surface 4c of the steel member 4 ₄ is a stepped surface of the steel member 4 _3, the pair of channel members combined spelling by respective Bearing joined by high-strength fasteners 6 formed, and the spelling alignment portion on one of the flat surface 4a of the steel member 4 ₁ to form a channel-shaped member, the spelling alignment portion of the flat surface 4c is a stepped surface of the steel member 4 ₄ forming the other channel members overlay, also spelled alignment of one of the spelling alignment portion of the flat surface 4c is a stepped surface of the steel member 4 ₂ forming the channel-shaped member, the flat surface 4a of the steel member 4 ₃ forming the other of the channel-shaped member Overlapping the parts, each in the spelling hole 4o A steel assembly member obtained by Bearing bonded insert the power fastener 6.
Here, a pair of groove members is formed in advance with two steel members, then the pair of groove members are combined and bound to form a steel cross-section member 4A having a square cross section (closed cross section). The steel member 4A having a square cross section (closed cross section) can be formed by sequentially binding the steel members (4 ₁ , 4 ₂ , 4 ₃ , 4 ₄ ).
The ratio of (shaft diameter of high-strength fastener) / (plate thickness of steel member) in this steel assembly member 4A was 3.0.
In addition, since the high strength fastener 6 used by this steel frame assembly member 4A uses the same thing as the steel frame assembly member 1A of Example 1, description is abbreviate | omitted. Each steel member does not need to be formed of steel plates s of the same material (characteristics), and can be used properly according to the strength required for the portion to be used, or can be made of the same material with different thicknesses. This steel assembly member 4A is mainly used as a pillar material.

[Examples of steel members]
FIG. 17 shows an example of a steel member forming the steel assembly member of Example 5 of the present invention.
The steel frame member 5 is formed by cutting a steel plate s into a rectangle and bending it at an angle θ (90 degrees here) at a position near the center of the width by bending to form two flat surfaces 5a and 5b at right angles. This is a steel sheet forming material having an open cross section whose basic shape is L-shaped.
The two flat surfaces 5a and 5b of this steel sheet forming material are used as the binding portions, and the side end portions of the respective flat surfaces 5a are used as the binding portions by high-strength fastener bonding. The steel member 5 has an open cross section provided in a row in the vertical direction.
When the steel members 5 are bound together, a binding hole corresponding to both of the spelling holes 5o is provided by abutting the ends of the adjacent steel members 5 on the side of the binding portion and contacting the binding portions. Supporting pressure is joined through the attached plate.
The steel plate s that forms the steel member 5 is the same as that of the steel member 1 of the first embodiment, and a description thereof will be omitted.

[Example of steel assembly member (5A)]
18 (a) and 18 (b) show an example of the steel assembly member of the present invention of Example 5 using the steel member of FIG.
This steel assembly member 5A is a steel assembly member having a square cross section (closed cross section) formed by combining and binding _four steel member examples 5 (5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ ) with an open cross section, for example, contact the flat surface 5b and the flat surface 5a of the steel member _{5 second} steel member _{5 1,} also the flat surface 5a and the flat surface 5b of the steel member ₄ of steel members _3, on the inner side against each the combined spelling by Bearing joined to form a pair of channel members with high strength fastener 6 via添板8, spelling alignment portion and the other one of the flat surface 5a of the steel member 5 ₁ to form a channel-shaped member of the spelling alignment portion of the flat surface 5b of the steel member 5 ₄ forming the channel members, also spelled alignment portion and the other channel members of steel member 5 _second flat surface 5b which form one of the channel members the spelling alignment portion of the flat surface 5a of the steel member ₃ to be formed, it Each of them is a steel frame assembly member obtained by abutting and inserting the high-strength fastener 6 into the binding hole 4o via the accessory plate 8 and bearing joint.

Here, a pair of groove members is formed in advance by two steel members, and then the pair of groove members are combined and bound to form a steel frame assembly member 4a having a square cross section (closed cross section). The steel member 5A having a square cross section (closed cross section) can be formed by sequentially binding the steel members (5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ ).
The ratio of (shaft diameter of high-strength fastener) / (plate thickness of steel member) in this steel assembly member 4A was 0.9. However, although not added in FIG. 18, the case where the accessory plate 8 is outside is included.
The steel frame assembly member 5A has a closed cross section, and the pair of groove members are supported and joined by the high-strength fasteners 6 through the attachment plates 8 that are in contact with the inner side. For example, the high strength fastener 6 inserted through the binding hole on the other groove member side is joined to the accessory plate 8 joined to the one groove member side, with the high strength fastener 6 interposed therebetween. By inserting and holding from the inside, there is no difficulty in the joining work.
In addition, since the high strength fastener 6 used by this steel frame assembly member 5A uses the same thing as the steel frame assembly member 1A of Example 1, description is abbreviate | omitted. Each steel member does not need to be formed of steel plates s of the same material (characteristics), and can be used properly according to the strength required for the portion to be used, or can be made of the same material with different thicknesses. This steel frame assembly member example 5A is mainly used as a pillar material.

[Examples of steel members]
The example of the steel member which forms the steel assembly member of Example 6 of this invention is demonstrated based on FIG.
The steel member 10 is formed by cutting a steel sheet s into a rectangular shape, bending it by bending to an angle α (here 45 degrees) at a position of about 2/7 of the width from both ends, and further angle γ (here) 90 degrees), an open cross-section formed into a deformed groove shape consisting of a flat flange of two faces 10a and 10b, 10c and 10d, and a flat face of five faces of the web 10u. Although it is a steel plate member and each flat surface can be used as a binding portion, here, the flat surfaces 10c and 10d on the web 10u side of the bent flange are used as a binding portion that is supported and joined by a high-strength fastener. The steel member is provided with one row of spelling holes 10o in the length direction.
The steel plate s that forms the steel member 10 is the same as the steel member 1 of the first embodiment, and a description thereof will be omitted.

For example, when a plurality of the steel frame members 10 are bound to form a steel frame assembly member (column material) having a square cross section (including a polygonal cross section), for example, a joint metal is bolted to join an H-shaped steel beam. Sometimes. In such a case, it can be considered that a bolt hole is also provided in the web 10u of the steel member 10 that forms the part to which the metal fitting is to be joined in the same manner as the binding hole 10o.
The web 10u of the steel member 10 may also be used as a binding portion, and only the web 10u of the steel member 10 may be used as a binding portion. In this case, a binding hole is provided only in the web 10u.
The width of the bent flanges on both sides, the width ratio of the web 10u, and the angles α and γ forming the flat surfaces 10a and 10b, 10c and 10d of the bent flanges are not fixed. It is determined according to the cross-sectional shape and size of the steel frame assembly member 10A formed together.

[Example of steel assembly member (10A)]
20 (a) and 20 (b) show an example of the steel assembly member of the present invention of Example 6 using the steel member of FIG.
The steel assembly member 10A is a steel construction elements of four steel frame member 10 _{(10 1,} 10 _2, 10 3, 10 ₄₎ comprising a combination of rectangular cross section (closed cross section), outside the four corners A steel assembly member obtained by superimposing the binding portions of the flat surfaces 10c and 10d on the distal end side of the bending flange of the adjacent steel member 10 and inserting the high-strength fastener 6 into the binding hole 10o and binding them by support bearing. is there.
Since this steel frame assembly member 10A is bound to the outside of the corner portion of the steel frame member 10, joining is easy even if other high-strength fasteners are used, and the binding portion also functions as a reinforcing portion. The strength of the steel assembly member can be secured stably.
The ratio of (shaft diameter of high-strength fastener) / (steel member thickness) in this steel assembly member 10A was 0.8.
In addition, since the steel plate s and the high-strength fastener 6 that form the steel member 10 of the steel frame assembly member 10A are the same as those of the steel frame assembly member 1A of the first embodiment, description thereof is omitted. Each steel member does not need to be formed of steel plates s of the same material (characteristics), and can be used properly according to the strength required for the portion to be used, or can be made of the same material with different thicknesses. This steel assembly member 10A is mainly used as a pillar material.

[Example of steel assembly member (11)]
21 (a), (b), (c), and (d) show examples of the assembly (joint) structure in the length direction of the steel assembly member of the present invention.
The steel assembly member 11, as shown in FIG. 21 (a), similarly to FIG. 2 of Example 1, four steel member _{(1 1,} 1 _2, 1 3, _{1 4)} in a high strength fastener 6 the steel assembly member 11 ₁ of the combined spelling length L ₁ by bearing capacity junction, the length L ₂ of the butted steel assembly member 11 _2, high strength fastener 6 Bearing length to match the spelling in the longitudinal direction by conjugation with This is a steel assembly member of L (L ₁ + L ₂ ).
Here, as shown in FIG. 21 (b), (c) , the butt side of the steel construction elements 11 ₁ and 11 _2, in one steel assembly member ₁₁₁ side, the steel member _{1 2} and _{1 4,} next It is arranged so that the unbound portion of the length Ls is longer than the matching steel members 1 ₁ and 1 ₃ , and other overlapping adjacent overlapping portions are left in a state of leaving this unbound portion. Splicing is done by bearing joint with high strength fastener 6.
In other steel assembly member 11 ₂ side, the steel member 1 ₁ and 1 _3, non-spelling alignment of Ls and longer than steel member 1 ₂ and 1 ₄ adjacent are arranged so as to protrude, this non-spelling In the state where the mating portion is left, other overlapping adjacent stitching portions are stitched together by bearing support by the high-strength fastener 6.

To form such a butt portion, one of the steel assembly member 11 ₁ and a non-spelling alignment length Ls of the steel member 1 ₂ and 1 _4, the other of steel assembly member 11 ₂ Steel member 1 ₁ and 1 ₃ FIG. 21 (d) shows an unbound portion having a length Ls that is fitted from the length direction so as to be adjacent and overlapped, and the overlapped portion is bound by support joint by the high-strength fastener 6. The steel assembly member 11 having such a length L can be obtained.
The steel assembly member 11 can be made to have a predetermined length only by binding by supporting pressure joining with the high-strength fastener 6 without using a separate joining means such as an accessory plate.
The ratio of (high-strength fastener shaft diameter) / (steel member thickness) in the steel assembly member 11 was 1.5.
In addition, since the steel plate s and the high strength fastener 6 which form each steel frame member of this steel frame assembly member 11 are the same as those of the steel frame assembly member 1A of the first embodiment, description thereof will be omitted. The steel frame assembly member 11 is mainly used as a pillar material.

In the steel assembly member 11 once, and form the other steel assembly member 11 ₂ of the steel assembly member 11 ₁ of the length L ₁ length L _2, alignment spelling the steel assembly member of the two in the longitudinal direction However, it is also possible to form a steel frame assembly member having a predetermined length L by sequentially binding them from the steel frame member in the same way.
Moreover, steel assembly member 11, may be formed in the same steel assembly member 11 ₁ and the other steel assembly member 11 _{and second} characteristics formed by steel frame members having the same characteristics, the one steel assembly member 11 ₁ and the other steel construction elements 11 ₂ can also be formed by steel frame members having different characteristics.
It is also possible to form a steel assembly member having fine characteristics corresponding to the characteristics required for each part by binding steel members having a plurality of types of characteristics.
Such a concept can be similarly applied to the steel assembly members of the first to sixth embodiments.

  The present invention is not limited to the contents of the above embodiments. Material characteristics of steel sheet, shape, size, material (including strength) of steel member, binding part, number of binding holes, presence / absence of binding hole, type of binding material, arrangement, binding method, type of high strength fastener, The presence or absence of the accessory plate or the scissor plate is changed within the scope of the claims depending on the use of the steel assembly member, the use site, and the required strength.

The solid explanatory drawing which shows the example of the steel member used in Example 1 of this invention. (A) A figure is an end surface explanatory view showing an example (1A) of a steel frame assembling member of the present invention using the steel frame member of FIG. 1, and (b) is a side side explanatory view of (a) figure. FIG. 5 is a partially cutaway side view illustrating an example of a support joint structure according to a high-strength fastener example used in the present invention. (A) A figure is an end surface explanatory view showing an example (1B) of a steel frame assembly member of the present invention using the steel frame member of FIG. (A) A figure is an end surface explanatory view showing an example (1C) of a steel assembly member of the present invention using the steel member of FIG. 1, and (b) is a side explanatory view of FIG. (A) The figure is an end surface explanatory drawing which shows the steel frame assembly member example (1D) of this invention by the steel frame member example of FIG. 1, (b) figure is side explanatory drawing of (a) figure. (A) The figure is an end surface explanatory drawing which shows the steel frame assembly member example (1E) of this invention by the steel frame member of FIG. 1, (b) A figure is a side explanatory drawing of (a) figure. (A) The figure is an end surface explanatory drawing which shows the steel frame assembly member example (1F) of this invention by the steel frame member of FIG. 1, (b) A figure is a side explanatory drawing of (a) figure. (A) The figure is an end surface explanatory drawing which shows the steel frame assembly member example (1G) of this invention by the steel frame member of FIG. 1, (b) A figure is a side explanatory drawing of (a) figure. The solid explanatory drawing which shows the example of the steel member used in Example 2 of this invention. (A) The figure is an end surface explanatory drawing which shows the steel frame assembly member example (2A) of this invention by the steel frame member of FIG. 10, (b) A figure is a side explanatory drawing of (a) figure. (A) A figure is an end surface explanatory view showing an example of a steel assembly member (2B) of the present invention by the steel member of Drawing 10, (b) A figure is a side explanatory view of (a) figure. The solid explanatory drawing which shows the example of the steel member used in Example 3 of this invention. (A) An end surface explanatory drawing which shows the example (3A) of the steel frame assembly member of this invention by the steel frame member of FIG. 13, (b) A figure is a side explanatory drawing of (a) figure. The solid explanatory drawing which shows the example of the steel member used in Example 4 of this invention. (A) The figure is an end surface explanatory drawing which shows the steel frame assembly member example (4A) of this invention by the steel frame member of FIG. 15, (b) A figure is a side explanatory drawing of (a) figure. The solid explanatory drawing which shows the example of the steel member of Example 5 of this invention. (A) An end surface explanatory drawing which shows the example (5A) of the steel frame assembly member of this invention by the steel frame member of FIG. 17, (b) A figure is a side explanatory drawing of (a) figure. The solid explanatory drawing which shows the example of the steel member used in Example 6 of this invention. (A) The figure is an end surface explanatory drawing which shows the steel frame assembly member example (10A) of this invention by the steel frame member of FIG. 19, (b) A figure is a side explanatory drawing of (a) figure. (A) The figure is an end surface explanatory view showing an example of a steel assembly member similar to the example (1A) of the steel assembly member of Example 1 of the present invention, and (b) the figure shows two steel assemblies assembled together in the length direction. The solid explanatory drawing which shows a member. (C) The figure is a side explanatory view of (a) figure, (d) figure is the state where the two steel assembly members of figure (b) and (c) are bound together in the length direction with a high strength fastener. Side surface explanatory drawing which shows.

Explanation of symbols

1,1 _{1, 1 2,} 1 3, _{1 4:} Steel member 1 1a, 1b: inclined flange 1u: Web 1o: Spelling hole s: steel plate 1A, 1B, 1C, 1D, 1E, 1F, 1G: steel Assembly Member 2, 2 ₁ , 2 ₂ , 2 ₃ , 2 ₄ : Steel member 2 2a, 2b: Inclined flange 2c, 2d: Flat tip surface 2o: Spelling hole 2A, 2B: Steel assembly member 3, 3 ₁ , 3 ₂ , 3 ₃ , 3 ₄ : Steel member 3 3a, 3b: Inclined flange 3c: Flat tip surface 3o: Spelling hole 3A: Steel assembly member 4, 4 ₁ , 4 ₂ , 4 ₃ , 4 ₄ : Steel member 4 4a, 4b: Flat surface 4c: Step flat surface 4o: Spelling hole 4A: Steel frame assembly member 5, 5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ : Steel frame member 5 5a, 5b: Flat surface 5o: Splicing hole 5A: Steel frame assembly member 6: High-strength fasteners (supported high-strength bolts) Standing members 7a, 7b: V-shaped flange 8: 添板 9: Steel member (H-section steel)
10, 10 ₁ , 10 ₂ , 10 ₃ , 10 ₄ : Steel frame member 10o: Spelling hole 10a, 10b, 10c, 10d: Flat surface 10A: Steel frame assembly member 11: Steel frame assembly member (long) 11 ₁ , 11 ₂ : Steel assembly parts (short)
12: Channel steel 12a, 12b: Flange 12u: Web 13: Deformed Z-shaped steel 13a, 13b: Flange 13u: Web

Claims (4)

It is made of a steel member with an open cross-section in which a steel plate having a yield point of 600 N / mm ² or more is bent to form a plurality of flat surfaces in the width direction, and at least one flat surface is used as a binding portion. A steel frame assembly member characterized in that it is bound at a plurality of locations in the length direction by bearing joining with a high-strength fastener having a tensile strength of 1700 N / mm ² or more and 2600 N / mm ² or less through an accessory plate.   The steel assembly member according to claim 1, wherein the ratio of the shaft diameter of the high-strength fastener and the plate thickness of the steel member is 0.5 to 3.0.   Place the steel members to be bound together by shifting the tip so that the unbound portion protrudes at the tip of at least one side, and bind the overlapped portions with a high-strength fastener. A binding portion of another steel frame member is bound from the length direction to the binding portion, and the overlapped binding portion is bound to each other by a pressure-bonding joint using a high-strength fastener to have a predetermined length. The steel frame assembly member according to claim 1 or 2.   The steel assembly member according to claim 3, wherein at least one of the bound steel members has different material properties and shapes.

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