JP2631604B2 - Steel frame positioning connection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of positioning and connecting steel beams for connecting beam steel beams and column steel beams in a steel structure.

[0002]

2. Description of the Related Art Taking a beam steel frame as an example, as shown in FIG. 6, it is assumed that 2 is a column-side beam bracket, and a beam steel frame 1 to be joined thereto abuts an end with the beam bracket 2 end. Bolted or welded with a splice plate 3 to be bridged over. In the case of fixing with the splice plate 3, the splice plate 3, the beam steel frame 1 and the beam bracket 2
A bolt insertion hole is provided in the flange of the above, and a bolt and a nut are fastened with a high-strength bolt 4 through the bolt insertion hole.
In the figure, reference numeral 5 denotes a gusset plate for connecting the webs.

[0003] In order to join the beam steel structure 1 to the beam bracket 2 attached to the column in this way, the beam steel structure 1 is hung by a crane or the like and the ends of the beam structure are brought into contact with each other. Using the bolt insertion holes of the high-strength bolts 4, the holes are manually aligned and temporary bolts are inserted to perform positioning.

[0004] The same applies to the case where the beam steel frames 1 are joined to each other instead of the beam brackets 2. Further, the case where the column steel frames are joined to each other instead of the beams is often joined by the splice plate 3.

[0005]

In the above-described positioning in which the temporary bolts are inserted by manually aligning the holes using the bolt insertion holes, the worker always intervenes at the joint at the time of suspending the beam steel. At least one signaling man for the crane operator and one
This requires a total of three workers, and this work is a high-altitude work and is dangerous.

[0006] In the case of a column steel frame, since the column steel frame to be suspended is in a vertical state, positioning is not so difficult as in the case of the beam steel frame, but there are almost the same problems.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to provide a simple operation in which a joint of a beam is engaged according to gravity without using temporary bolts. And safety can be improved,
Moreover, it is an object of the present invention to provide a steel frame positioning and connecting method capable of obtaining a joint having high strength and accuracy.

[0008]

According to the present invention, in order to achieve the above object, a splice plate is provided at one flange end of a steel frame so as to protrude therefrom, and a first guide hole formed by an elongated hole is formed in the splice plate. A second guide pin protrudes from the other one-sided flange, while a first guide pin protrudes from the one-sided flange of the steel frame to which the steel frame is joined. A splice plate having a second guide hole formed by an elongated hole is provided, and a relationship between the first guide hole and the second guide hole is such that one of the first guide hole and the second guide hole is an elongated hole elongated in the steel frame axial direction, and the other is the elongated hole. The guide pin is an elongated hole elongated in the direction perpendicular to the guide hole, and the guide pin engaging with the guide hole is tapered so that the diameter increases toward the root, and the first guide pin is a first guide pin. The hole, polymerizing the second guide pin to the second while posting each guide hole of the splicing plate and the other of steel flanges,
Further, the steel frame on which the splice plate is provided is a beam steel frame, and the steel frame to which the splice plate is joined is a beam bracket or a beam steel frame on the column side.

[0009]

According to the first aspect of the present invention, the splice plate is overlapped with the flange of the other steel frame while inserting the guide pin projecting from the other steel frame into the guide hole provided with the splice plate of one steel frame. By doing so, the mutual alignment of the steel frames can be performed automatically by the engagement between the guide holes and the guide pins.

[0010] Further, the engagement between the guide hole and the guide pin can be performed on both flanges between the steel frames to be joined, so that it is more effective.

Further, by engaging the first guide pin with the first guide hole, the positioning in the steel frame axial direction can be performed by the second guide pin.
By engaging the guide pin with the second guide hole, positioning in the direction orthogonal to the steel axis direction is performed. Thus, positioning in the steel axis direction and the direction orthogonal to the steel axis direction is determined step by step. Therefore, if attention is paid only to one direction to the accuracy at the time of suspension, accurate and easy positioning can be achieved.

According to the second aspect of the present invention, it is particularly effective in the case of joining beam steel frames.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows one of the steel frame positioning connection methods according to the present invention.
2 to 5 are longitudinal sectional side views showing respective steps.

In this embodiment, a beam steel frame 1 is connected. In the same manner as in the conventional example shown in FIG. 6, reference numeral 2 in the figure denotes a column-side beam bracket.

A splice plate 3 is fixed to the end of the upper flange 1a of the beam steel frame 1 by welding or high-strength bolting. A first guide hole 6 formed by an elongated hole is formed in a portion of the splice plate 3 protruding from the upper flange 1a. And a bolt insertion hole 7 are formed.

On the other hand, from the upper flange 2a of the beam bracket 2, a first guide pin 8 whose diameter increases toward the root is projected to engage with the first guide hole 6, and a bolt insertion hole is provided. 7 was provided.

As an example, the first guide hole 6 is a long and narrow hole extending in the axial direction of the beam steel structure 1, and the diameter of the first guide pin 8 correspondingly increases in the axial direction of the beam steel structure 1. It is a trapezoidal wedge type heading toward. Then, the cross-sectional shape of the root end of the maximum diameter of the first guide pin 8 matches the shape of the first guide hole 6, and further, the relative position between the first guide hole 6 and the first guide pin 8. The relationship is
When they are engaged with each other, the ends of the beam steel 1 and the beam bracket 2 abut against each other, and the bolt insertion holes 7 of the splice plate 3 and the bolt insertion holes 7 of the upper flange 2a are selected so as to match. Keep it.

Although this is sufficient for the first embodiment,
As a second embodiment, a splice plate 3 is fixed to the end of the lower flange 2b of the beam bracket 2 by welding or bolting with high strength, and the lower flange 1 of the splice plate 3 is fixed.
The second guide hole 9 formed by an elongated hole is provided at
And a bolt insertion hole 7 were formed.

In response to this, a second guide pin 10 having a diameter increasing toward the root is projected from the lower flange 1b of the beam steel frame 1 so as to engage with the second guide hole 9, and , A bolt insertion hole 7 is provided.

The second guide hole 9 is an elongated hole extending in a direction orthogonal to the axial direction of the beam bracket 2 or the beam steel frame 1, that is, in a cross-sectional direction, and the second guide pin 10 has a corresponding diameter. Is increased in a trapezoidal wedge shape in a direction orthogonal to the axial direction of the beam bracket 2 or the beam steel frame 1.

Second guide hole 9 and second guide pin
The relative positional relationship with the first guide hole 10 is the same as that of the first guide hole 6 and the first guide pin 8, and the description is omitted. However, as shown in FIG. 2, the height h ₁ of the _first guide pin 8 is larger than the height h ₂ of the second guide pin 10.
Let h ₁ > h ₂ .

In this manner, as shown in FIG. 2, the beam steel 1 is suspended, the end of the beam steel 1 is brought close to the end of the beam bracket 2, and the first guide pin 8 is first brought into contact with the first guide pin 8 as shown in FIG. Is the guide hole 6 of the splice plate 3 of the beam steel 1
To enter.

Then, if the beam steel frame 1 is lowered horizontally, the first guide pin 8 becomes the first guide pin 8 as shown in FIGS.
And the splice plate 3 overlaps with the upper flange 2 a of the beam bracket 2,
Since the mutual bolt insertion holes 7 also coincide with each other, they may be fastened and fixed with high strength bolts.

In the case of the second embodiment, the tip of the second guide pin 10 enters the second guide hole 9 of the splice plate 3 of the beam bracket 2 at the stage shown in FIG.
As shown in FIG. 5, the splice plate 3
The lower flange 1b is superimposed on the lower flange 1b, and the bolt insertion holes 7 are aligned with each other.

In the case of the second embodiment, the first guide pin 8 is first engaged with the first guide hole 6 to adjust the beam bracket 2 and the beam steel frame 1 in the axial direction. And then the second guide pin 10 and the second guide hole 9
Is performed, the adjustment in the direction orthogonal to the axial direction is performed.

The first guide pin 8 and the second guide pin 8
Since the guide pins 10 are engaged with the splice plate 3, the beam load is reliably deposited on the beam bracket 2 via the splice plate 3.

The suspension of the beam steel frame 1 and the engagement of the first guide pin 8 and the second guide pin 10 with the splice plate 3 can be performed only by a signal and attendant rope operator as an operator. It is.

In the above embodiment, the case where the beam steel 1 is connected to the beam bracket 2 has been described. However, the present invention can also be applied to the connection between the beam steel 1 and the column steel, and the steel frames are welded. It can be applied to the case of joining.

[0029]

As described above, the steel positioning and connecting method according to the present invention is a simple operation in which the connection of the beam is engaged according to gravity without using temporary bolts.
It can be easily performed by a small number of workers, can also improve safety, and can obtain high joining strength and high accuracy. In particular, since the positioning in the steel axis direction and the direction orthogonal to the steel axis direction is determined step by step, accurate and simple positioning can be performed only by paying attention to the accuracy during suspension only in one direction, It is easy to work.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a steel frame positioning connection method according to the present invention.

FIG. 2 is a longitudinal sectional side view showing a first step of an embodiment of the steel frame positioning connection method according to the present invention.

FIG. 3 is a vertical sectional side view showing a second step of the embodiment of the steel frame positioning connection method according to the present invention.

FIG. 4 is a longitudinal sectional side view showing a third step of the embodiment of the steel frame positioning connection method according to the present invention.

FIG. 5 is a vertical sectional side view showing a fourth step of the embodiment of the steel frame positioning connection method according to the present invention.

FIG. 6 is a side view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Beam steel 1a ... Upper flange 1b ... Lower flange 2 ... Beam bracket 2a ... Upper flange 2b ... Lower flange 3 ... Splice plate 4 ... High-strength bolt 5 ... Gusset plate 6 ... 1st guide hole 7 ... Bolt insertion hole 8 ... first guide pin 9 ... second guide hole 10 ... second guide pin

Claims (2)

(57) [Claims] 1. A splice plate is provided at one flange end of a steel frame so as to protrude therefrom, a first guide hole is formed in the splice plate by a long hole, and a second guide pin is formed from the other one flange. On the other hand, a splice plate in which a first guide pin is projected from one flange of the steel frame to which the steel frame is joined, and a second guide hole formed by an elongated hole is formed on the other flange surface. Provided, the relationship between the first guide hole and the second guide hole is such that one of the elongated holes in the axial direction of the steel frame, the other is elongated in the direction perpendicular thereto, The guide pin engaging with the guide hole is tapered so that the diameter increases toward the root, the first guide pin is in the first guide hole, and the second guide pin is in the second guide hole. A splicing plate is superposed on a flange of the other steel frame while being inserted into the steel frame, respectively. 2. The steel frame positioning connection method according to claim 1, wherein the steel frame on which the splice plate is provided is a beam steel frame, and the steel frame to which the splice plate is joined is a column-side beam bracket or a beam steel frame.