JP2654740B2 - Steel beam joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel beam connecting member used when connecting a steel beam at a predetermined position of a reinforced concrete column.

[0002]

2. Description of the Related Art Conventionally, a steel beam erection method for connecting a steel beam (H steel) to a reinforced concrete column has been proposed.

[0003] In the conventional steel beam erection method proposed so far, there has been no good fastening and connecting method between the reinforced concrete column and the steel beam, so that the steel beam is penetrated into the reinforced concrete column and the steel beam is reinforced. A method using a slip-prevention metal fitting to prevent slipping out has been adopted.

In recent years, however, a method has been proposed in which a steel beam continuous fitting is buried in a reinforced concrete column and the steel beam is not penetrated into the reinforced concrete column by connecting the metal beam and the steel beam.

[0005] Although this method is certainly improved in terms of workability, it is still insufficient in terms of concrete filling, adhesion and strength.

[0006] The present invention, of course, excellent in workability,
An object of the present invention is to provide a steel beam joint member capable of solving the above-mentioned problems and capable of constructing a structure having sufficient strength and durability.

[0007]

The gist of the present invention will be described with reference to the accompanying drawings.

[0008] Oite at a predetermined position of the reinforced concrete column 1
A steel beam joint member used when connecting H steel 2 having a vertical portion between upper and lower horizontal portions, and a base 3 buried in a reinforced concrete column 1 and formed by casting means is provided. Is provided with a connecting portion 10 protruding outward at the front, rear, left and right of the frame portion 7 having the central hole 4.
Are provided with base holes 6 respectively. At least one end of the connecting portion 10 is overlapped with a horizontal portion of the H steel 2.
The beam mounting arm 5 is projected, and the longitudinal area c of a longitudinal area b and the frame portion 7 of the longitudinal area a and the communicating portion 10 of the beam attachment arm 5, the steel H 2 continuously arranged in the beam mounting arm 5 It is set to an equivalent cross-sectional area that is about １ ／ of the vertical cross-sectional area d, and is set so as to satisfy the relationship of “vertical thickness of the connecting portion 10 <vertical thickness of the frame 7”. It is, and, the connecting portion 10 is formed so as to gradually become thinner toward the outside, such structure
Steel beam joints on both upper and lower horizontal parts of H steel 2
The present invention relates to a steel beam joint member that is configured as a pair so as to be continuously provided .

[0009] Oite at a predetermined position of the reinforced concrete column 1
A steel beam joint member used when connecting an H steel 2 having a vertical portion between upper and lower horizontal portions, and a base member 3 buried in a reinforced concrete column 1 and formed by casting means is provided. Has a structure in which connecting portions 10 projecting outward are provided on the front, rear, left and right sides of a frame portion 7 having a central hole 4, and each of the connecting portions 10 is provided with a base hole 6. A beam mounting arm 5 is provided at the end of the portion 10 to be connected to the horizontal portion of the H-steel 2 so as to overlap with the horizontal portion. The vertical cross-sectional area a of the beam mounting arm 5, the vertical cross-sectional area b of the connecting portion 10, and the longitudinal section of the frame portion 7 are provided. the area c, with the beam mounted arm 5
The vertical sectional area d of the H steel 2 to be installed is set to an equivalent sectional area that is about の of the longitudinal sectional area d, and “the vertical degree of the thickness of the connecting portion 10 <the vertical degree of the thickness of the frame portion 7”. is set so as to be related, and, the connecting portion 10 is formed so as to gradually become thinner toward the outside, the steel beam of such a construction
In order to connect the joint member to both upper and lower horizontal parts of H steel 2
The present invention relates to a steel beam joint member constituted by a pair .

[0010]

[Function] The best way to embed in steel reinforced concrete column 1 and connect and fix H steel 2 as a steel beam is to drill holes in place to improve the filling property of concrete and increase the adhesive force. However, based on the finding that too large or too many holes are insufficient in strength, the present invention has been designed and studied.

As a result, the vertical cross-sectional area a of the beam mounting arm 5, the vertical cross-sectional area b of the connecting portion 10, and the vertical cross-sectional area c of the frame 7
Approximately 1 / of the vertical sectional area d of the H steel 2 connected to the beam mounting arm 5
And an equivalent cross-sectional area of 2 and a relationship of “vertical thickness of the connecting portion 10 <vertical thickness of the frame portion 7” is set. The joining member formed so that it gradually becomes thinner toward
Good filling properties and break some parts
And the steel beam connecting member is reinforced concrete column
Water above and below H steel 2 buried in 1 and as steel beams
Flat portion both in the polymerization continuously provided the al, it was confirmed that an optimum and uniform strength and durability of the structure.

Specifically, in the steel beam joint member according to the present invention, concrete spreads over a wide area inside and the concrete takes root like a tree inside, so that the filling property of the concrete is improved and the adhesive force is increased. At the same time, the stress transmission is performed smoothly.

[0013] The above-mentioned facts indicate that holes must be provided in order to improve the concrete filling property, and that the steel beam beam connecting member is to be provided in a reinforced concrete column 1 as wide as possible in order to obtain sufficient strength. This is the conclusion reached from the idea that we must establish

Since the base 3 is formed by casting means, the base 3 is formed by changing the longitudinal sectional area a of the beam mounting arm 5, the longitudinal sectional area b of the connecting portion 10 and the longitudinal sectional area c of the frame 7 respectively. For mounting arm 5
It is necessary to set an equivalent cross-sectional area to be about 1/2 of the vertical cross-sectional area d of the H steel 2 to be continuously provided , "the degree of vertical thickness of the continuous portion 10 <
The thickness of the frame portion 7 in the vertical direction is set to a relationship, and the connecting portion 10 can be easily formed so as to gradually become thinner toward the outside. No. 3 can be manufactured.

[0015]

1, 2 and 3 show an embodiment of the present invention . This implementation
Although examples of the type which projects a beam mounting arm 5 in the connecting portion 10 of each, and not the number of beams mounted arm 5 is limited to this type, various as shown in FIGS. 4, 5, 6 Is possible. Specifically, the four-type, the two-type, and the three-type are selectively used depending on the place where the reinforced concrete columns 1 are erected.

[0016] Hereinafter, the four beams mounting arm 5 will be described for Example projecting from the front and rear left and right connecting portions 10, the beam attachment arm 5
It goes without saying that the same effect is obtained even if the number is different.

The steel beam connecting member according to the present embodiment is provided with a continuous portion 10 which protrudes outward in the front, rear, left and right directions of a rectangular frame portion 7 having a central hole 4, and the continuous portion 10 has a base hole. A base 3 made of cast steel having a structure in which 6 is formed is provided, and four beam mounting arms 5 are protruded from each of the continuous portions 10 of the base 3.
The connecting portion 10 and the beam mounting arm 5 may be separately formed as described above, and both may be welded, or the connecting portion 10 and the beam mounting arm 5 may be integrally formed by casting means.

Further, the vertical sectional area a of the beam mounting arm 5 and the connecting portion 10
The vertical cross-sectional area b and the vertical cross-sectional area c of the frame portion 7 are the same as those of the steel beam 2 connected to the beam mounting arm 5 as shown in FIG.
The equivalent cross-sectional area is set to be about 1/2 of the vertical cross-sectional area a of the steel 2 (the upper half area when the middle of the vertical portion of the H steel shown by hatching in FIG. 2 is cut in parallel with the horizontal portion). And the relationship of “the vertical thickness of the beam mounting arm 5 <the vertical thickness of the connecting portion 10 <the vertical thickness of the frame 7” is set, and The continuous portion 10 is formed so as to gradually become thinner outward. Therefore, FIG.
The shear force of the H steel 2 is borne and transmitted in the a and b portions in the middle, and the slip-out prevention effect is achieved in the c portion, and the filling and adhesion of the concrete are enhanced by the central hole 4 and the base hole 6. , The strength is excellent.

Since the base 3 is formed by casting means, the base 3 is formed by changing the vertical cross-sectional area a of the beam mounting arm 5, the vertical cross-sectional area b of the connecting portion 10 and the vertical cross-sectional area c of the frame 7 respectively. Mounting arm 5
The vertical cross-sectional area of the H-steel 2 to be connected and fixed is set to an equivalent cross-sectional area that is about 1/2 of the vertical cross-sectional area d, "the vertical thickness of the continuous portion 10 <the vertical thickness of the frame portion 7". In this case, it is easy to form the connecting portion 10 so that the connecting portion 10 becomes gradually thinner toward the outside, and the base 3 having a uniform strength can be manufactured. .

Reference numeral 8 denotes a bolt hole, and 9 denotes a reinforcing bar.

Two steel beam connecting members according to the present embodiment having the above-described structure are buried opposite to each other at a predetermined position of a reinforced concrete column 1 (in addition to the one shown in the figure, a concrete frame may be wound around a steel frame). (A suitable connecting member may be interposed between the two steel beam connecting members.) The beam mounting arm 5 of the steel beam connecting member and the upper and lower horizontal portions of the H steel 2 are connected to each other.
Each is polymerized and linked to form a structure.

Specifically, the work of embedding the steel beam connecting member according to the present embodiment in the reinforced concrete column 1 is performed in advance in a factory or the like, the reinforced concrete column 1 is carried into the site, and the reinforced concrete column 1 is erected on the site. Then, the H steel 2 is fixedly connected to the steel beam joint member buried in the reinforced concrete column 1.

As described above, by adopting the present embodiment, it is possible to obtain a structure which is excellent in workability, can cast concrete well, and has sufficient strength (tensile force, compressive force, rigidity, toughness, etc.). Can be built.

[0024]

According to the present invention, since it is configured as described above, it is a steel beam joint member which is excellent in workability and can construct a structure having sufficient strength.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present embodiment.

FIG. 2 is an explanatory diagram of the above.

FIG. 3 is an explanatory perspective view showing a use state of the above.

FIG. 4 In the plan view of the type with different number of beam mounting arms
is there.

FIG. 5 In the plan view of the type with different number of beam mounting arms
is there.

FIG. 6 is a plan view of a type in which the number of beam mounting arms is different.
is there.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Reinforced concrete column 2 H steel 3 Base 4 Central hole 5 Beam mounting arm 6 Base hole 7 Frame part 10 Continuous part a, b, c, d Vertical cross-sectional area

Claims (2)

(57) [Claims] At a predetermined position on a reinforced concrete column (1)
A steel beam joint member used when connecting H steel (2) having a vertical portion between upper and lower horizontal portions in a continuous manner, wherein the base member is embedded in a reinforced concrete column (1) and formed by casting means ( 3), the base body (3) is provided with a continuous portion (10) projecting outward in the front, rear, left and right directions of a frame portion (7) having a central hole (4). Has a base hole (6), and at least one end of the connecting portion (10) is overlapped with a horizontal portion of H steel (2).
The beam mounting arm (5) to be protruded is provided, and the vertical cross-sectional area (a) of the beam mounting arm (5), the vertical cross-sectional area (b) of the connecting portion (10), and the vertical cross-sectional area (c) of the frame (7) are provided. Ren設Su and is, the beam mounting arm (5)
The equivalent cross-sectional area is set to about 1/2 of the vertical cross-sectional area (d) of the H-steel (2). And the thickness of the connecting portion (10) is formed so as to become gradually thinner outward .
The steel beam joint member with such a structure is connected to the upper and lower horizontal parts of H steel (2).
A steel beam joint member comprising a pair so as to be overlapped on both sides . 2. At a predetermined position on a reinforced concrete column (1).
H steel with a vertical section between the upper and lower horizontal sections(2)
Used when connecting in seriesSteel beam jointAnd iron
Embedded in reinforced concrete columns (1) and formed by casting means
A base (3) to be provided is provided.IsCentral hole
It protrudes outward to the front, rear, left and right of the frame part (7) having (4).
A connecting portion (10) is provided, and each connecting portion (10) has
Each of them has a base hole (6).
0) at the tipIt is connected and superposed on the horizontal part of H steel (2).Beam
The mounting arm (5) protrudes, and the vertical cross-sectional area of the beam mounting arm (5)
(A) and the vertical sectional area (b) of the connecting portion (10) and the frame portion (7).
The vertical cross-section area (c) corresponds to the beam mounting arm (5).H steel to be installed continuously
Equivalent cross-sectional area that is about 1/2 of the vertical cross-sectional area (d) of (2)
The thickness of the connecting part (10) in the vertical direction
Degree <Degree of vertical thickness of frame part (7)>
And the connecting portion (10) is directed outward.
It is formed so that it becomes thin graduallySuch a structure
Steel beam joint To both the upper and lower horizontal parts of H steel (2)
Constructed as a pair to be connected continuouslySteel beams characterized by the following:
Joint member.