JPH0755220Y2 - Reinforcement structure of reinforced concrete beams - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a reinforcing structure of a reinforced concrete beam.

[Prior Art] Reinforcing bars of conventional reinforced concrete beams are reinforced by shearing a number of stir wraps at regular intervals around the upper and lower main bars arranged in parallel.

[Problems to be Solved by the Invention] In such a conventional bar arrangement, since the stirrup is wound and fixed one by one while providing the width stop bar and the like, the structure is simple, but the number of steps is troublesome. And takes time,
The work efficiency was poor.

This invention was conceived in order to solve such a conventional problem, and its purpose is to change a stirrup into a single reinforcing bar bent in a spiral shape, and use the reinforcing bar as a lattice reinforcing bar. By installing it on the upper and lower main reinforcements, the work efficiency of the reinforcement is improved, and by supplementing the connecting lattices to the lattice reinforcement, a new reinforcement structure of reinforced concrete beams that can be made into a truss structure is created. To provide.

[Means for Solving the Problems] The features of the present invention based on the above-mentioned object are composed of upper and lower main reinforcements of a reinforced concrete beam, and lattice reinforcements spirally wound from one end to the other end of the upper and lower reinforcements. The muscles are welded to the upper and lower main bars by bending them in a stirrup shape at both ends of the upper and lower main bars, at other parts at right angles to the upper and lower main bars in a plane, and at both sides alternately at an angle. The connecting latticed muscles are diagonally attached to the upper and lower ends of the latticed muscles to supplement the non-arranged portions on both sides, and the trusses are composed of latticed muscles on both sides.

[Operation] In the above structure, the upper and lower main muscles, the lattice muscles, and the connecting lattice muscles constitute a truss, and the lattice muscles also serve as shear reinforcement muscles. Therefore, the shear strength of the beam is increased as compared with the conventional structure.

[Example] In the figure, 1 and 1 are upper main rebars of reinforced concrete beams, 2 and 2 are lower main rebars, 3 is a lattice reinforcement formed by spirally bending one rebar, and 4 and 4 are connecting lattice reinforcements. Is.

The lattice muscles 3 are located in the stirrup shapes 3a and 3b at the both ends of the upper and lower main muscles 1 and 2, at right angles in a plane to the upper and lower main muscles 1 and 2 at other portions, and alternately diagonally located on both sides. As described above, it is bent in advance at the rebar factory. The connection between the lattice muscle 3 and the upper and lower main muscles 1 and 2 is as shown in FIG.
Lattice muscle 3 wrapped from one end of the upper and lower main bars 1 and 2 to the other end
It is performed by welding each bent portion of the upper and lower end main bars 1 and 2.

In such a state, unstrengthened portions are generated on both sides and the strength becomes insufficient, so if the connecting latticed muscles are diagonally attached over the upper and lower ends of the lateralized latticed muscles to supplement the unstretched portions on both sides, The bar arrangement structure is a truss structure, and no other members that supplement strength are required.

[Effect of the Invention] With the above configuration, in this device, the lattice muscles 3 are the main upper and lower ends.
Formed in a stirrup shape at both ends of 1, 2, in other parts, at a right angle to the upper and lower main bars 1 and 2 in a plane, and in a diagonal shape alternately at both sides. You can set it aside, and for the non-reinforced parts on both sides,
Since the connecting latticed muscles 4 are diagonally attached and supplemented over the upper and lower ends of the latticed muscles 3 on the side portions, a truss structure is formed by latticed muscles that are continuous on both sides. At times, the main reinforcement and the shear reinforcement that are the structures can be used as temporary materials.

In addition, since only the upper and lower main bars and the lattice bars are processed, and the connection of both is welded, it takes less labor and time than before, and the processing can be done at the rebar factory. It has many advantages such as the work of arranging is reduced and the formwork can be hung from the beam reinforcement without support.

[Brief description of drawings]

The drawings show an embodiment of the reinforcing structure of a reinforced concrete beam according to the present invention. FIG. 1 is a perspective view, and FIG. 2 is a perspective view showing a reinforcing bar reinforcement. 1 ... Upper main bar, 2 ... Lower main bar 3 ... Lattice bar, 4 ... Connected lattice bar

Claims (1)

[Scope of utility model registration request] 1. A reinforced concrete beam comprising upper and lower main reinforcements and lattice reinforcements spirally wound from one end to the other end of the upper and lower main reinforcements. The lattice reinforcements are in a stirrup shape at both ends of the upper and lower main reinforcements. , In other parts, it is bent at a right angle to the upper and lower main bars in a plane, and is alternately bent diagonally on both sides to be welded to the upper and lower main bars, and the connecting lattices are attached diagonally across the upper and lower ends of the lattice lines on the sides. Reinforcing structure of reinforced concrete beams, characterized by supplementing the non-reinforcing bars on both sides and forming a truss with continuous latticed bars on both sides.