JPH0460045A - Connecting method for screw reinforcing bar and reinforcing bar truss - Google Patents

Abstract

PURPOSE:To improve connection strength by forming the head section of a screw reinforcing bar larger than a tubular space formed with a tubular steel material and a steel truss, and forming the portions other than the screw section at intervals with optional angles on the right and left. CONSTITUTION:End sections 3 on both sides of an angle steel 2 are welded at the desired positions of a steel truss 1, and a screw steel bar 5 is inserted into a triangular space 4 surrounded by the angle steel 2 and the steel bar truss 1. A head section 6 larger than the triangular space 4 is provided at the end section of the screw steel bar 5, intervals with optional angles theta are provided on the right and left from the center section so that the screw steel bar 5 and the steel bar truss 1 are brought into no face contact with each other, and the screw steel bar 5 is coupled with an opposite screw steel bar 7 with a nut 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for joining threaded reinforcing bars and reinforcing bar trusses.

[Conventional technology and problems to be solved]

Conventionally, when joining threaded reinforcing bars and reinforcing bar trusses,
Work is being carried out on site to join threaded reinforcing bars and reinforcing bar trusses by welding. This method is not only extremely dangerous due to the work being done at a high place, but also has poor reliability in terms of the strength of the welded part, and there has been a strong desire for the development of a new technique.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a connection between threaded reinforcing bars and reinforcing bar trusses that can significantly improve work safety and reliability in terms of strength of welded parts. The present invention provides a method.

[Means for solving problems]

The method of joining a threaded reinforcing bar and a reinforcing bar truss according to the present invention involves welding a cylindrical steel material to a desired portion of the reinforcing bar truss to join a threaded reinforcing bar to a reinforcing bar truss. inserting a threaded reinforcing bar into the space, the threaded reinforcing bar having a head larger than the cylindrical space at the end;
The threaded reinforcing bar and the opposing threaded reinforcing bar are engaged by a nut, and have an interval at an arbitrary angle from the center to the left and right so that the parts other than the threaded part do not make surface contact with the reinforcing bar truss. It is.

【Example〕

Embodiments of the present invention will be described in more detail below with reference to the drawings. Figure 1 is a side view of the threaded reinforcing bar, Figure 2 is A-A in Figure 1.
FIG.

The ends 3 on both sides of the angle iron 2 are welded to a desired part of the reinforcing bar truss 1, and the threaded reinforcing bar 5 is inserted into the triangular space 4 surrounded by the angle iron 2 and the reinforcing bar truss 1. The end portion has a head 6 larger than the triangular space,
The threaded reinforcing bars 5 are spaced at an arbitrary angle θ from the center to the left and right so as not to come into surface contact with the reinforcing bar truss 1, and the threaded reinforcing bars 5 and the opposing threaded reinforcing bars 7 are engaged by nuts 8. That is. It is also possible to engage the lock nut 9 adjacent to the nut 8 if desired.

Next, the effects of the above configuration will be explained.

Since the angle iron 2 is welded to the reinforcing bar truss 1 in advance, no on-site welding work is required.

Further, at the site, the threaded reinforcing bars 5 and the opposing threaded reinforcing bars 7 are only engaged with the nuts 8, which has a great effect on improving work efficiency and safety.

Furthermore, since the threaded reinforcing bars 5 are spaced at an arbitrary angle θ from the center to the left and right so as not to make surface contact with the reinforcing bar truss 1, the centers of the opposing threaded reinforcing bars 7 and threaded reinforcing bars 5 are perfectly aligned. Even in the case where the threaded reinforcing bar 5 is not attached, the threaded reinforcing bar 5 can swing by 2θ, so that the threaded portions facing each other can be engaged with each other with the nut 8 very easily.

〔Effect of the invention〕

As is clear from the above explanation, the method for joining threaded reinforcing bars and reinforcing bar truss of the present invention can easily and safely connect the reinforcing bar truss and threaded reinforcing bars, and can significantly improve reliability in terms of strength. It has many excellent industrial effects.

[Brief explanation of drawings]

FIG. 1 is a side view of the threaded reinforcing bar, and FIG. 2 is a sectional view taken along the line AA in FIG. 1: Reinforcing bar truss 2: Angle steel 3: End 5.7: Screw reinforcing bar 8: Nut 4: Space 6: Head 9: Lock nut

Claims (1)

[Claims] To connect the threaded reinforcing bar to the reinforcing bar truss, a cylindrical steel material is welded to a desired part of the reinforcing bar truss, and the threaded reinforcing bar is inserted into a cylindrical space surrounded by the cylindrical steel material and the reinforcing bar truss, and the threaded reinforcing bar is The threaded reinforcing bar has a head larger than the cylindrical space at the end, and has an interval at an arbitrary angle to the left and right from the center so that parts other than the threaded part do not make surface contact with the reinforcing bar truss. A method for joining a threaded reinforcing bar and a reinforcing bar truss, the method comprising engaging the opposing threaded reinforcing bar with a nut.