JPH0428069B2 - - Google Patents

Description

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

(Problem to be solved by the invention) The method for arranging beam reinforcement in steel reinforced concrete construction is as follows:
For ease of construction, stirrups are installed around the beam steel prior to placing the main reinforcement, and after the main reinforcement is inserted into the stirrup, the stirrup is placed in the designated position. To do this, various measures are required on site, such as installing a jig on the beam steel frame to temporarily hold the stirrup.

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

The spacer ensures the clearance between the main reinforcement and the beam steel frame, and at the same time serves as a guide when inserting the main reinforcement.

The supporting jig has the role of keeping the stirrup distance from the upper flange of the beam steel frame to avoid collision with the stirrup when inserting the main reinforcement. It consists of a rod-shaped member that receives the air. The rod-shaped member serves to position the stirrup slightly higher than a predetermined height to facilitate 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 described below based on drawings showing one example.

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 the main reinforcement 4 bent into a U-shape into the stirrup 3 from the column steel frame 1 side.

When installing the stirrup 3, it does not matter whether the beam steel frame 2 is connected to the column steel frame 1 before or after.

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 piece that acts as a roller to help insert the main reinforcing bar 4, and the receiving jig 6 is made of a bar-shaped member 6a such as a steel frame that directly receives the stirrup 3. It consists of a metal fitting 6b such as an angle piece which is received and temporarily fixed to the upper flange 2a.

The work procedure will be explained with reference to FIG.

As shown in FIG. 1, before inserting the main reinforcing bars 4, the stirrup 3 is suspended and attached onto the rod-shaped member 6a of the receiving jig 6. At this time, 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 ends of the upper end reinforcement 4a and the lower end reinforcement 4b, and insert the upper end reinforcement 4a into the corner of the stirrup 3 while sliding it on the spacer 5. Reinforcement is completed ().

Thereafter, the bar member 6a is pulled out, the tips of the main reinforcements 4 are untied, and the stirrup 3 is 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- and 2 are side views showing the state of 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: Stirrup, 4: Main reinforcement, 4a: Upper end reinforcement, 4b: Lower end reinforcement, 5: Spacer, 6: Support jig,
6a: Rod-shaped member, 6b: Hardware.

Claims (1)

[Claims] 1. Join the beam steel frame to the column steel frame, which has a spacer on the upper flange at the end that secures the clearance between this and the main reinforcement, and a jig that temporarily supports the stirrup, and suspend the stirrup from the jig. After installing the U-shaped main reinforcement, vertically insert the upper end reinforcement from the column steel frame side while sliding it over the spacer, and place the reinforcement at the corner of the stirrup. Reinforcement method for main beam reinforcement in steel reinforced concrete construction.