JPH0762887A - Beam holding structure under post/beam installation structure - Google Patents

Abstract

PURPOSE:To connect and fix a steel beam to a post having a gusset plate only provided with a web on a temporary basis and enhance an availability factor of a crane. CONSTITUTION:In an installation structure of post/beam where an H shape-made steel beam 3 is inserted between existing posts 1 by a transverse movement and a side face on the end of a web 3a of the steel beam 3 is adapted to come into contact with a gusset plate projectingly installed to the post 1, thereby connecting the beam to the post, an alignment temporary receiving piece whose wall thickness is identical to that of the gusset plate 2 is integrally fixed with the end of one side of the web 3. A hook-shaped hardware 5 which serves as an installation guide and a slip prevention service installed downward, is integrally installed to the front of the temporary receiving piece 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam-holding structure in a column-beam installation structure in which beams are arranged between existing columns and the beams can be temporarily installed before connection and fixing.

[0002]

2. Description of the Related Art Generally, a steel frame beam is installed on an existing column having a gusset plate made of only a web. The steel frame beam is generally hung by a lifting device such as a crane and laterally inserted between the columns. Joining is completed by bringing the end side surface of the web of the steel beam into contact with the protruding gusset plate, inserting the bolt into the bolt hole formed in both, tightening the nut, or welding between the two.

[0003]

However, in this installation structure, since the side surface of the web is only in contact with one side surface of the gusset plate, if the load of the steel beam is stored in the gusset plate as it is, the upper side flange The load is stored while the gusset plate is in contact with the lower edge.In particular, in the case of the bolt connection method, there is a problem that the bolt holes of both are displaced vertically, and the load is unevenly distributed because they contact at one side. Since the steel frame beam has a rotational moment in the falling direction, the beam cannot be temporarily installed until it is completely fixed to the gusset plate.

Therefore, in the installation structure of this type, the sling of the crane cannot be removed until the fixing by the bolt nut or welding is completed, which causes a decrease in the operating rate of the crane.

The present invention has been made to solve the above problems, and an object thereof is to enable temporary fixing when connecting a steel beam to a column having a gusset plate of only this type of web, and to operate the crane. (EN) A beam holding structure in a column-beam installation structure capable of improving the efficiency.

[0006]

In order to achieve the above-mentioned object, according to the present invention, a steel frame beam made of H-shaped steel is laterally inserted between existing columns, and the gusset plates projecting from the columns are provided with the above-mentioned structure. In the installation structure of the column beam which is made to contact and connect the end side surfaces of the web of the steel frame beam, at one end portion of the one side surface of the web, a temporary positioning piece for positioning having the same thickness as the gusset plate is provided. It is characterized in that it is integrally fixed, and that a hook-shaped metal fitting for installation and also as a stopper is provided on the front surface of the temporary receiving piece so as to extend downward.

[0007]

With the above construction, if the steel beam is lowered with the lower inside of the hook-shaped metal fitting positioned at the upper part of the gusset plate, the temporary receiving piece comes into contact with the upper part of the gusset plate. The load can be applied to the gusset plate through the gusset plate, and the rotation moment of the steel beam due to the contact of one side can be stopped by the hook-shaped metal fitting.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing a structure for holding a steel beam according to the present invention, and FIG. 2 is a sectional view of the same.

In the figure, an existing pillar 1 is a steel frame pillar having a rectangular cross section and a hollow inside, and a gusset plate 2 having a large number of bolt holes 2a formed on its side portion integrally projects. There is.

The steel beam 3 has flanges 3 above and below the web 3a.
It is made of H-shaped steel integrated with b, and its web 3a
A large number of bolt holes 3c corresponding to the bolt holes 2a of the gusset plate 2 are formed at both ends (only one end side is shown in the drawing) of the gusset plate 2. A temporary receiving piece 4 having the same thickness as the gusset plate 2 is integrally fixed by welding, and a hook-shaped metal fitting 5 vertically hung downward is integrally projected on the front surface of the temporary receiving piece 4 by welding or the like. It is set up.

The temporary receiving piece 4 is for positioning the steel beam 3 with respect to the gusset plate 2,
With the upper edge of the gusset plate 2 aligned with the lower portion of the temporary receiving piece 4, the heights of the bolt holes 2a, 3c of the two are aligned.

The hook-shaped metal fitting 5 also serves as an installation guide and a retaining member, and the inside thereof is formed with a tapered inclined surface 5a from the lower part of the temporary receiving piece 4 toward the outside.

In order to install the steel beam 3 having the above-mentioned configuration between the columns 1, the steel beam 3 is hung horizontally on a crane (not shown) via a wire, and the steel beam 3 is mounted as shown in the arrow direction in FIG. The web 3a is laterally moved, and both ends of one side of the web 3a are brought into contact with the gusset plate 2 to stop the movement.

Next, when the steel beam 3 is lowered, the lower edge of the temporary receiving piece 4 hits the upper part of the gusset plate 4,
The load of the steel beam 3 is stored in the gusset plate 2 through the temporary receiving piece 4. The web 3a is urged by the impact at the time of contact as shown by the imaginary line in FIG.
Even if they are slightly separated or descend in a state where they are not completely joined, they will be guided to the temporary receiving piece 4 along the inner inclined surface 5a of the hook-shaped metal fitting 5.

If the steel beam 3 is moved and adjusted along the longitudinal direction while the load is being applied, the bolt holes 2a and 3c are completely aligned with each other, and the sling of the crane can be removed at this point.

In the temporary receiving state of the steel frame beam 3, a rotational moment is generated on the opposite side of the temporary receiving piece 4 due to the uneven distribution of the load, but it can be stopped by the hook-shaped metal fitting 5 sandwiching the gusset plate 2 and temporarily installed. The safety of time can be secured.

[0017]

As described above in detail with reference to the embodiments, in the beam holding structure in the column-beam installation structure according to the present invention, the lower inside of the hook-shaped metal fitting is located above the gusset plate. If the steel beam is lowered in this state, the temporary receiving piece comes into contact with the upper part of the gusset plate, the load can be deposited on the gusset plate through this temporary receiving piece, and the rotation moment of the steel beam due to the contact with one side is Since it can be stopped with a hook-shaped metal fitting, the beam can be temporarily installed with safety while placing the beam between the existing columns with this type of gusset plate and connecting and fixing it, and the operating rate of the crane is also improved. it can.

[Brief description of drawings]

FIG. 1 is a perspective view showing an installation structure of a steel beam according to the present invention.

FIG. 2 is a sectional view of the same.

[Explanation of symbols]

 1 Steel column 2 Gusset plate 3 Steel beam 3a Web 4 Temporary receiving plate 5 Hook type metal fitting

Claims (1)

[Claims] 1. A steel frame beam made of an H-shaped steel is laterally inserted between existing columns, and a gusset plate projecting from the column is brought into contact with an end side surface of a web of the steel frame beam to connect them. In the installation structure of the column and beam, a temporary receiving piece for positioning having the same thickness as the gusset plate is integrally fixed to an end of one side surface of the web, and the temporary receiving piece is provided on the front surface of the temporary receiving piece. Is a beam-holding structure in a column-beam installation structure, which is integrally provided with a hook-shaped metal fitting that is installed downwardly and also serves as a retaining guide.