JPS606487Y2 - anchor bolt - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anchor bolt having a hook for preventing transverse reinforcement.

Anchor bolts that fix a structure to the upper end of a concrete foundation buried in a concrete foundation protrude above the concrete foundation, generally have a threaded part and a hook part at the upper and lower ends of a straight main rod part, respectively. It is molded from thick diameter round steel.

In many cases, such anchor bolts are simply fixed to the concrete foundation in parallel in a straight line, but when used in this way, they can only provide the effect of vertical reinforcement, which is a problem in terms of earthquake resistance. Since this is undesirable, it is also common practice to provide each anchor bolt with transverse reinforcement.

When arranging horizontal reinforcements, a method is usually adopted in which the anchor bolts and the horizontal reinforcements are tied and fixed with wire or the like, but such means have extremely poor workability.

The purpose of this invention is to solve the above-mentioned problems, and the main rod of the anchor bolt, which has a hook part at the lower end and a threaded part at the upper end, is partially bent to create a cross-bracing stopper hook. By providing an anchor bolt characterized by the above-mentioned structure, it is intended to improve workability and earthquake resistance.

Hereinafter, an embodiment of the anchor bolt of the present invention shown in the drawings will be described.

1 and 2 show a perspective view and a side view, respectively, of the anchor bolt of the present invention in which transverse reinforcements are arranged, and in both figures, 1 is the anchor bolt and 2 is the transverse reinforcement.

The anchor bolt 1 has a hook portion 1b and a threaded portion 1c at the lower and upper ends of the main rod portion 1a, respectively.

The hook part 1b has the function of preventing the anchor bolt 1 buried in concrete up to the vicinity of the upper end of the main rod part 1a from coming out, and the threaded part 1c is a structure (see Fig. (not shown) has the function of screwing together bolts, etc.

A feature of the anchor bolt of the present invention is that the main rod portion 1a is partially bent to form a hook 1d for preventing the horizontal reinforcement from passing through.

The hooks 1d for preventing the passage of transverse bars are sized to be able to prevent the passage of the transverse bars 2, and are preferably formed in a plurality on the main rod portion 1a as shown in the figure, so that adjacent hooks 1d for preventing the passage of transverse bars project in opposite directions. Make it.

The anchor bolt 1 of the present invention configured as described above has the following features:
For example, as shown in Fig. 1, each anchor bolt 1
It is used by arranging the horizontal reinforcement 2 on the horizontal reinforcement hook 1d.

In this case, if the horizontal strip stopper hooks 1d are alternately projected in opposite directions, the upper horizontal strip 2 can be moved from the front to the front, and the lower horizontal strip 2 can be moved from the front to the front at the same time, as shown in the figure. The horizontal stripes 2, 2 can be easily arranged.

That is, to secure the transverse bar 2 to the hook 1d for preventing the transverse bar from passing through, push the transverse bar 2 through its open end, expand the open end slightly, and then engage the transverse bar 2 within the hook 1d for preventing the bar from passing through the transverse bar by its return action. This is done by

After arranging the horizontal reinforcements 2, 2 in this way, the anchor bolt 1 is buried in the concrete foundation together with the horizontal reinforcement 2 in the same way as a normal anchor bolt, and a structure etc. is fixed to the upper end of the anchor bolt 1.

Furthermore, by alternately arranging the horizontal stripes in the anchor bolts 1, 1 as described above, the row positions of the tops of the threaded portions IC at the upper ends thereof can be easily aligned.

It goes without saying that seismic resistance can be improved by arranging horizontal reinforcements 2 in the concrete and fixing the anchor bolts 1, 1 in this way, but in the anchor bolt 1 of the present invention, the main rod portion 1a is Since the hook is not linear as in the conventional case but has a transverse bar, the effect of preventing the anchor bolt 1 from turning and coming out is further improved.

As described above, since the anchor bolt of the present invention partially bends its main rod part to form a hook that prevents the horizontal reinforcement from passing through, it is possible to not only improve the workability of installing the horizontal reinforcement and improve the seismic resistance. , it is possible to further improve the effect of preventing the anchor bolt from turning and being pulled out, and its practical value is extremely significant.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention, and FIGS. 1 and 2 show a perspective view and a side view, respectively, of the anchor bolt of the present invention when transverse reinforcement is provided. 1... Anchor bolt, 1a... Main rod part, 1b... Hook part, 1c... Threaded part,
1d...Hook for preventing horizontal reinforcement, 2...
Transverse muscle.

Claims (2)

[Scope of utility model registration request] (1) The main rod of the anchor bolt, which has a hook part at the lower end and a threaded part at the upper end, is partially bent to form a hook for preventing the passage of the transverse reinforcement, and the hook for preventing the passage of the transverse reinforcement has a length that allows the horizontal reinforcement to be pushed in. An anchor bolt that is capable of locking the transverse reinforcement. (2) A plurality of the hooks for preventing the horizontal bar from passing through are formed on the main rod, and adjacent hooks for preventing the passing of the horizontal bar are formed so as to protrude in mutually opposite directions. Anchor bolts listed in ).