JPS6133088Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an anchor bolt.

The anchor bolt 20 includes an upper end reinforcement 2, an auxiliary reinforcement 3,
The reinforcement structure in which the horizontal reinforcements such as the lower end reinforcements 4 and the vertical auxiliary reinforcements 5 are replaced is surrounded by a temporary frame 7 made of metal foam, etc.
It is disposed at the top of the metal form supported by an anchor plate 8, and fixed to the foundation 9 by pouring concrete.

In such conventional construction methods, the protruding portion 11 of the anchor bolt 20 from the top is so short that it is difficult to determine whether it protrudes perpendicularly to the foundation or not.
Because the anchor bolt is supported at one point on the anchor plate, the protruding part of the anchor bolt swings during pouring of concrete, which may cause the anchor bolt to be found to be tilted away from the vertical direction after being fixed to the foundation.

Such deviation and inclination and resulting dimensional errors make it difficult to fit the anchor bolt to the required member, and also make it difficult to tighten the bolt after fitting. When tightening the bolt, a gap occurs between the bolt and the washer, making it impossible to tighten the bolt securely.

In particular, such errors in installation dimensions occur when the distance between two anchor bolts is close to each other, specifically when fixing to an anchor bolt below the butting end of a panel structure such as a prefabricated house, This becomes a problem when two reinforcing steel columns are brought into contact and fixed to their respective anchor bolts.

The present invention is intended to eliminate such inconveniences, and will be explained with reference to the embodiment shown in FIG.
2, 12' is bent into a U-shape so that at least the threaded parts 12, 12' at both ends are parallel, and the intermediate parts 13, 13' located below the threaded parts are Connecting bars 15 are joined by spot welding or the like in the direction perpendicular to the threaded portion, and
It is constructed by bending both ends 16 and 17 of the connecting rod in opposite directions within a plane perpendicular to the threaded portion including the connecting rod.

This anchor bolt 10 has one bent end 16 of a connecting reinforcement 15 mounted on a transverse reinforcement 2 having a reinforcement structure surrounded by metal foam, and the other end side 1 of the connecting reinforcement 15
The connecting bars 15 are tied to the horizontal bars 2 near the joints 7, and an anchor plate 8 with threaded portions 12, 12' projected is mounted on the top end of the metal form 7.

As is clear from this, the two screw parts 12 and 12' protrude from the top of the concrete foundation that has been cast.
is the locking part 14 and the connecting bar 1 at the U-shaped bending point.
5, and there is no dimensional placement error between them, and since the horizontal reinforcement 2 and the connecting reinforcement 15 are fixed in parallel, the threaded portions 12, 12' are connected to the horizontal horizontal reinforcement 2. Since they are reliably orthogonal and fixed at two points, the transverse reinforcement 2 and the anchor bolt 8, there is no wobbling movement of the threaded parts 12, 12' when concrete is poured, and thus the threaded parts are securely attached to the concrete foundation 9. It is fixed in the vertical direction. Therefore, all the inconveniences caused by displacement and inclination of the anchor bolt that have conventionally occurred are eliminated.

Furthermore, since two anchor bolts are essentially fixed to the horizontal reinforcement by one binding with the horizontal reinforcement, the workability of the foundation work is improved. Furthermore, the total length a'+b' of the protrusions of both ends 16 and 17 is taken as the base thickness h, and by inserting and abutting the tip of this protrusion between the metal forms, it is essentially fixed at four points, The inclination of the anchor bolt is more reliably eliminated.

In addition, as shown by the two-dot chain line in Fig. 2, in a reinforcement structure in which two horizontal reinforcements 2', 2'' are arranged in parallel with an interval b slightly larger than the interval between the two threaded parts, the connecting reinforcement It is also possible to install an anchor bolt by placing both ends 16 and 17 of the horizontal reinforcement on the two parallel horizontal reinforcements. ″, the anchor bolt is securely fixed at right angles to the transverse reinforcement.

That is, the effect of the present invention is produced in the same way when the two threaded portions are fixed in parallel to the length direction of the transverse reinforcement, and when they are fixed in a direction perpendicular to the length of the transverse reinforcement.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a basic structure in which anchor bolts are installed in a conventional construction method, and FIG. 2 is a perspective view of an anchor bolt according to the present invention. 1...Base block, 2...Top end reinforcement, 3...
Auxiliary reinforcement, 4...Lower end reinforcement, 5...Auxiliary (vertical) reinforcement, 6...
...Base reinforcement, 7...Metal form, 8...Anchor plate, 9...Foundation (concrete), 1
0...Anchor bolt of the present invention, 11...Protrusion part,
12... Threaded portion, 13... Intermediate portion, 14... Locking portion, 15... Connecting portion, 20... Conventional anchor bolt.

Claims (1)

[Scope of utility model registration request] Bend a long bolt rod with threads on both ends into a U-shape so that the threads on both ends are parallel to each other, and bend it in a direction perpendicular to the threads in the middle of both ends located below the threads. An anchor bolt characterized in that a connecting rod is joined and both ends of the connecting rod are bent in opposite directions in a plane perpendicular to a threaded portion including the connecting rod.