JPH10331311A - Method of fixing end part of deck receiving beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of fixing the end part of a deck receiving beam in which the end part of the deck receiving beam can be directly supported by the upper end part of a wall without using a special support member, and the extension of work term of the deck plate installing work or the rise in construction cost is never caused. SOLUTION: The end part of a deck receiving beam 1 is inserted into a notched part 8 formed on the upper end part of a wall 2, and fixed to the upper end part of the wall 2, whereby the deck receiving beam 1 can be easily fixed to the upper end part of the wall 2 without using a fixing metallic material or being accompanied by the extension of work term or rise in construction cost. The lower end surface of the deck receiving beam 1 end part is welded to the weld surface 4a of a fixing steel angle material 4 within the notched part 8, whereby the end part of the deck receiving beam 1 is prevented from being moved within the notched part 8 in concrete placing, and the fixation of the deck receiving beam 1 to the upper end part of the wall 2 can be easily and surely performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a so-called wall plate structure such as a nuclear power plant in civil engineering or construction, in which a deck plate is used instead of a plywood form under a floor slab.
The present invention relates to a method of fixing an end portion of a deck support adopted when an end of a deck support for supporting a deck plate is fixed to an upper end of a wall in a deck construction method.

[0002]

2. Description of the Related Art As a method of fixing an end portion of a deck support for supporting a deck plate, the following method has conventionally been generally known. That is, for example, as shown in FIG.
By mounting concrete on the upper end of the wall 30, an embedded metal member 31 is attached to the upper end surface of the wall 30, and a steel frame bundle member 33 for directly supporting the end of the deck receiving beam 32 is welded to the embedded metal member 31 in place. I do. The deck beam 32 is fixed to the upper end portion of the wall 30 by embedding the end of the deck beam 32 to the steel frame bundle member 33 welded in place by bolts via the embedded hardware 31 and the steel frame bundle material 33. How to

[0003]

In the above-mentioned conventional method for fixing the end portion, when the concrete is poured into the upper end portion of the wall to fix the embedded metal, the embedded metal moves, for example, such that the embedded metal moves. Is bad. In addition, since the steel bundle material directly supporting the end of the deck receiving beam is attached to an embedded metal piece fixed to the surface of the upper end of the wall by field welding, the construction period of the entire deck plate installation work is extended. Further, since a relatively large embedded metal and a bundle of steel frames are required, the number of steel frame materials is increased, and the installation work of the deck plate becomes expensive. In addition, since the steel bundle material directly supporting the end of the deck receiving beam protrudes from the wall at the upper end of the wall, the steel bundle may interfere with equipment piping installed near the wall.

The present invention has been made in view of the above-mentioned circumstances, and has as its object the purpose of directly connecting the end of the deck receiving beam to the upper end of the wall without using a special supporting member projecting from the wall. An object of the present invention is to provide a method of fixing the end portion of a deck support beam that can be supported and does not increase the construction period of the deck plate installation work or increase the construction cost.

[0005]

According to the end fixing method of the present invention, by improving the joint shape of the wall concrete and the end shape of the deck receiving beam, the longitudinal reinforcing bar as the reinforcing bar in the wall is reduced. Without cutting, the deck beams will be supported directly on the wall concrete.

Specifically, a notch having a substantially concave cross section into which the end of the deck support can be inserted is formed at the upper end of the wall, and the end of the deck support is inserted into the notch. The end of the deck support is directly fixed to the upper end of the wall by casting concrete in a buried manner. The end of the deck beam inserted into the notch before the concrete was cast was welded with its lower end face welded to the welded surface of the fixing steel angle material exposed as a part of the bottom of the notch. Install it. Also, this fixing steel angle material,
It shall be installed by welding to the fixed position of the deck support of the vertical reinforcing bar which is the internal reinforcing bar of the wall.

[0007] In the end fixing method of the present invention, the deck receiving end is inserted into the notch formed in the upper end of the wall, and the concrete receiving is performed. By fixing to the upper end, the deck support is not extended and construction cost is increased without using embedded hardware and supporting steel frame material as in the conventional deck support end fixing method described above. Can be easily fixed to the upper end of the wall.

In addition, by welding the lower end surface of the end portion of the deck beam to the welding surface of the fixing steel angle material in the notch portion, the end portion of the deck beam moves within the notch portion during concrete casting. Therefore, it is possible to easily and reliably fix the deck receiving beam to the upper end of the wall.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a method for fixing an end portion of a deck support according to the present invention.

A deck support 1 for supporting a deck plate is
As a method of fixing the end of the deck receiving beam 1 employed when fixing to the upper end of the wall 2, first, as shown in FIG.
At the time when the internal reinforcing bars are assembled, the deck supports 1 are fixed to the positions of the vertical reinforcing bars 3 as the reinforcing bars.
A fixing steel angle member 4 having a welding surface 4a to which the lower end surface of the end can contact can be attached by welding.

As shown in FIG. 2, the fixing steel angle member 4 in this embodiment has a welding plate 4a having a welding surface 4a with which the lower end surface of the end of the deck receiving beam 1 contacts. 5a and a substantially L-shaped section from the hanging plate 5b hanging from the contacting plate 5a.
The main body 5 is formed in the shape of a letter, and the main body 5 is bent and protruded from both side surfaces of the contact plate 5a of the main body 5, and is locked to the vertical reinforcing bars 3 as internal reinforcing reinforcing bars of the wall 2. 6.

[0012] The fixing steel angle member 4 is
As shown in FIG. 2, each of the locking portions 6 is
Is temporarily fixed to the position where the vertical reinforcing bar 3 is fixed to the deck receiving beam 1. Thereafter, the temporarily fixed fixing steel angle member 4 is attached to the longitudinal reinforcing bar 3 by welding.

Next, as shown in FIG. 3, concrete 7 is poured into a portion where the internal reinforcing steel bars are assembled to form the upper end of the wall 2. When the upper end of the wall 2 is formed, a notch 8 having a substantially concave cross section into which the end of the deck support 1 can be inserted is formed at a position where the deck support 1 is supported. A part of the bottom side 8a of the portion 8 is configured so that the welding surface 4a of the fixing steel angle material 4 is exposed.

The notch 8 in this embodiment has, for example, a width of about 140 mm which is 40 mm wider than a flange width of a general deck receiver 1 and a longitudinal direction of the notch 8 of the deck receiver 1. (The height between the upper and lower flanges) and the depth is about 200 mm.

Next, as shown in FIG. 1B, the end of the deck support 1 is inserted into a notch 8 formed in the upper end of the wall, and the lower end surface of the end of the deck support 1 is inserted. The lower end surface of the end of the deck receiving beam 1 and the welding surface 4a of the fixing steel angle member 4 are fixed by welding to the welding surface 4a of the fixing steel angle member 4.

Incidentally, the deck support 1 in this embodiment includes:
At the end, the flange width is processed in advance at a factory so that the flange width can be inserted between the vertical reinforcing bars 3. For example, the flange width of a steel frame used as a normal deck support 1 is 250 m.
m to about 500 mm, but in advance, at its end, the flange width can be inserted between the
Process it to about 100mm at the factory.

According to the method for fixing the end portion of the deck support 1 of the present invention having the above-described structure, the end of the deck support 1 is inserted into the notch 8 formed in the upper end of the wall 2 and concrete is inserted. By fixing the end of the deck support 1 to the upper end of the wall 2 by casting, the embedding hardware 31 is fixed as in the conventional method of fixing the end of the deck support (see FIG. 4) described above. It is possible to easily fix the deck receiving beam 1 to the upper end of the wall 2 without using the steel frame material 33 or the like and without extending the construction period or increasing the construction cost.

Further, by welding the lower end face of the end of the deck receiving beam 1 and the welding surface 4a of the fixing steel angle member 4 in the notch 8, the deck receiving beam 1 is cast at the time of placing concrete.
Does not move in the notch 8, and the deck support 1 can be easily and reliably fixed to the upper end of the wall 2.

[0019]

According to the end fixing method of the present invention, the end of the deck support is inserted into the notch formed in the upper end of the wall and cast into concrete, so that the end of the deck support is mounted on the wall. By fixing to the upper end of the deck, unlike the conventional method of fixing the end of the deck support described above, without using embedded hardware or supporting steel bundle material, the deck construction time is increased and the construction cost is not increased. It is possible to easily fix the receiving beam to the upper end of the wall.

In addition, by welding the lower end surface of the end portion of the deck beam to the welding surface of the fixing steel angle material in the notch portion, the end portion of the deck beam moves within the notch portion during concrete casting. Therefore, the deck support can be easily and reliably fixed to the upper end of the wall.

[Brief description of the drawings]

FIG. 1A is a schematic sectional view showing a state in which a deck receiving beam is fixed to an upper end of a wall by an end fixing method of the present invention.
(b) is a schematic perspective view showing a state where the deck support is fixed to the upper end of the wall.

FIG. 2 is a schematic perspective view showing a process of fixing a deck support to an upper end of a wall by the end fixing method of the present invention.

FIG. 3 is a schematic perspective view showing a process of fixing the deck receiving beam to the upper end of the wall by the end fixing method of the present invention.

FIG. 4 is a schematic cross-sectional view showing a state where a deck support is fixed to an upper end of a wall by a conventional end fixing method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Deck receiving beam, 2 ... Wall, 3 ... Longitudinal reinforcing bar, 4 ... Steel angle material for fixing, 4a ... Welding surface, 5 ... Body, 5a ... Contact plate, 5b ... Hanging plate, 6 ... Stop, 7 ... Concrete, 8
… Notch, 8a… Bottom.

Claims (2)

[Claims] 1. A deck support for supporting a deck plate,
It is a method of fixing the end of the deck support adopted when being fixed to the upper end of the wall, at the time of assembling the internal reinforcing bar of the wall, at the deck support fixing position of the vertical reinforcing bar that is the reinforcing bar, A fixing steel angle material having a welding surface to which the lower end surface of the deck receiving end can be abutted is attached by welding, and concrete is poured into a portion where the internal reinforcing bars are assembled to form an upper end portion of the wall. At the point of time, at the supporting position of the deck support, a notch having a substantially concave cross section into which the end of the deck support can be inserted is formed, and a part of the bottom of the notch is fixed to the fixing steel frame. The welded surface of the angle material is exposed, and the end of the deck support is inserted into the notch at the upper end of the wall, and the lower end of the end of the deck support is fixed to the fixing steel angle. Abut the welding surface of the material Welding the lower end surface of the beam end and the welding surface of the fixing steel angle material, and then pouring concrete into the notch, fixing the end of the deck support to the upper end of the wall Characteristic method of fixing the end of the deck support. 2. The deck support according to claim 1, wherein an end portion of the deck support is formed so as to be inserted between the vertical reinforcing bars which are internal reinforcing bars of the wall. End fixing method.