JPS62260966A - Method for arrangement of beam main bar in reinforced concrete structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for arranging beam main reinforcement in steel reinforced concrete construction, in which stirrups are first attached to the beam steel frame and then the beam main reinforcement is arranged.

(Problem to be solved by the invention) From the viewpoint of workability, the method for arranging beam reinforcement in steel reinforced concrete construction is to attach stirrups around the beam steel frame before arranging the main reinforcement, and insert the main reinforcement into the stirrup. After that, the stirrups are placed in the predetermined positions.In order to arrange the main reinforcement without any problems, various measures are taken at the site, such as installing a jig on the beam steel frame to temporarily hold the stirrups. I need.

This invention was made for the purpose of improving the workability of reinforcing the main reinforcement formed in a U-shape, especially for the convenience of simultaneously arranging the upper and lower end reinforcements in the above-mentioned reinforcement arrangement method, and by using a simple jig. The aim is to achieve this by using

(Means for solving the problem) The present invention includes a spacer that secures a clearance between the upper flange of the end of the beam steel frame and the main reinforcement, and a holding jig that temporarily supports the stirrup and at the same time maintains its height. In addition to fixing the U-shaped main reinforcements, the tips of the U-shaped main reinforcements are pinched to ensure ease of reinforcement.

The spacer secures the clearance between the main reinforcing bars and the beam steel frame, and at the same time serves as a guide when inserting the main reinforcing bars. For example, it consists of a metal piece that is directly fixed to the flange and a rod-shaped member that is placed on top of the metal piece to receive the stirrup.

The rod-shaped member plays the role of positioning the stirrup slightly higher than a predetermined height to facilitate the insertion of the main reinforcing bars, and is pulled out after the main reinforcing bars are inserted. As a result, when inserting the main reinforcement, the distance between the upper end reinforcement and the lower part of the stirrup becomes smaller, so the tips of the upper end reinforcement and the lower end reinforcement are tied together or otherwise held together.

(Example) The present invention will be explained below based on the drawings showing one embodiment.

This invention is a method of reinforcing by attaching stirrups 3 to a beam steel frame 2 joined to a column steel frame 1, and then inserting main reinforcements 4 bent into a U-shape into the stirrups 3 from the column steel frame 1 side.

The stirrup 3 may be installed before or after the beam steel frame 2 is joined to the column steel frame 1.

A spacer 5 and a receiving jig 6 are attached to the upper flange 2a of the beam steel frame 2 prior to attaching the stirrup 3.

As shown in FIG. 2, the spacer 5 is preferably a pipe-shaped member that acts as a roller to help insert the main reinforcing bar 4, and the receiving jig 6 is a bar-shaped member 6a such as a reinforcing bar that directly receives the stirrup 3. It consists of a metal fitting 6b such as an angle piece that is temporarily fixed to the upper flange 2a in response to this.

The working procedure will be explained with reference to FIG.

As shown in FIG. 1, before inserting the main reinforcing bars 4, the stirrup 3 is hung and attached onto the rod-shaped member 6a of the receiving jig 6. At this time, the stirrup 3 is positioned slightly higher than a predetermined height by the rod-shaped member 6a.

Next, make the main reinforcement 4 vertical, tie the tips of the upper end reinforcement 4a and the lower end reinforcement 4b, insert the upper end reinforcement 4a into the corner of the stirrup 3 while sliding it on the spacer 5, place it at a predetermined position, and set the main reinforcement Reinforcement arrangement in step 4 is completed (II).

Thereafter, the bar member 6a is pulled out, the tips of the main reinforcements 4 are untied, and the stirrups 3 are moved to a predetermined position to be reinforced.

(Effects of the Invention) As described above, in the present invention, the insertion of the main reinforcement is facilitated by the spacer and the receiving jig, so the reinforcement can be easily arranged and the on-site work can be streamlined.

[Brief explanation of drawings]

FIGS. 1-I and 11 are side views showing the main reinforcement at the time of insertion and after insertion, respectively, and FIG. 2 is a perspective view thereof. 1: Column steel frame, 2: Beam steel frame 2a: Upper flange, 3 Nistar wrap 4: Main reinforcement, 4a
: Upper end reinforcement, 4b = Lower end reinforcement 5 spacer, 6: Receiving jig, 6a: Rod-shaped member, 6b = Hardware.

Claims (1)

[Claims] (1) A spacer on the upper flange at the end to ensure clearance between this and the main reinforcement, and a jig to temporarily support the stirrup, join the temporarily fixed beam steel frame to the column steel frame, and also support the stirrup. After hanging and attaching the U-shaped main reinforcement to the stirrup, vertically insert the upper end reinforcement from the column steel frame side while sliding it over the spacer with the U-shaped main reinforcement sandwiched between its tips. Reinforcement method for main beam reinforcement in steel reinforced concrete construction where reinforcement is placed at corners.