JPS639622Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an anchor used for fixing pillar bases of buildings.

Methods for fixing the column bases of buildings, etc. to the foundation structure include the embedded type, the neck wrap type, and the anchor bolt type, but these methods allow for a large amount of space on the foundation floor and are relatively easy to install. For this reason, the anchor bolt type is often used in low-rise buildings.

In the anchor bolt type, the anchor bolt is embedded in the concrete of the foundation structure and the column base is fixed to it. However, in order to install the anchor bolt accurately, it is necessary to ensure that the anchor bolt moves as the foundation concrete is poured. Conventionally, anchor bolts are fixed using the means shown in FIG. 1 before concrete is poured. That is, anchor A is constructed by attaching a template for receiving a column base, etc. to the upper end of a plurality of anchor bolts 2, 2, whose lower ends are connected by an anchor plate 1, and this is attached to the ground B by a locking rope. It is suspended from a canopy C that is firmly fixed with 3 etc., and this canopy C is buried in an anchor A and foundation concrete D. Therefore, the anchor bolt type also has many problems, such as requiring special consumables in addition to the anchor bolt and being quite troublesome to construct.

The anchor of this invention was developed to improve the problems of the anchor bolt type mentioned above.
A plurality of anchor materials using deformed reinforcing bars are attached to the anchoring body to be fixed to the foundation ground at the lower end of each of the anchor materials, and a male thread is formed at the upper end of the anchor materials, and the anchor materials are By joining with a template with hoop lines below the threaded part, not only does the pull-out resistance of each anchor material increase, but the overall structure of the anchor becomes robust, and the anchor can be easily positioned. To provide an anchor for fixing a column base, etc., which does not cause displacement of the anchor due to concrete pouring, and does not require the use of special fixing means such as conventional dowels during construction. It is something.

Hereinafter, embodiments of the anchor of the present invention will be described with reference to the drawings.

In FIGS. 2 and 3, 4 is a template on which the base plate of the column foot is placed exposed on the foundation concrete D, and a template 4 is placed on the base concrete D at a position corresponding to the bolt hole provided in the base plate. Through holes 5, 5... smaller than the outer diameter of the deformed reinforcing bars are provided. Further, a plurality of vertical stripes 6a are vertically provided on the lower surface side of the template 4,
A plurality of hoop reinforcements 6b, 6b, . ... forms a cage-like body 7.

The anchor material 8 uses a deformed reinforcing bar, and has a tapered part 9 that matches the through hole 5 of the template at its upper part, a male screw part 10 with a small diameter at its upper part, and a male screw part 10 with a small diameter at its lower end. Also, a male threaded portion 11 is provided. Further, 12 is a fixing body for fixing the anchor materials 8, 8... to the ground B, and in the center thereof, it is placed on the chestnut stone 13 of the ground B, and the lower end is buried and fixed in the waste concrete 14. A bolt hole 16 is provided in which the fixing bolt 15 is inserted, and each anchor material 8, 8 is provided on the outer side.
Mounting screw part 1 that screws together the lower end male thread part 9 of ......
7, 17... are provided, and furthermore, in the appropriate place on the lower surface,
Support legs 18 are provided for holding the fixing body 12 above the waste concrete 14 at a predetermined interval.
Generally, the fixing bolt 15 is inserted into the bolt hole 16, and the nut 19,
19 is tightened and clamped, and the mounting screw portion 17 is formed by fixing a nut to the fixing body 12, but the present invention is not limited thereto.

Each anchor material 8 is erected on the fixing body 12 by screwing the male screw portion 11 at the lower end into each mounting screw portion 17 of the fixing body 12, and these anchor materials 8
The upper part of the template 4 is fitted into the through hole 5 of the template 4 and the tapered part 9, and each anchor material 8 is integrally engaged in a positional relationship that allows it to fit into the bolt hole of the column base plate to be fixed later. By fitting the template 4, the cage-like body 7 is engaged so as to surround the outside of each anchor material 8.

The anchor of the present invention is constructed as described above, and in construction, first the fixing bolt 15 is erected on the chestnut stone 13 and fixed with the cast concrete 14. Next, the bolt hole 16 of the fixing body 12 is engaged with the fixing bolt 15, and the fixing body 12 is placed on the waste concrete 14 via the support leg 18, and the nuts 19, 19 are tightened to fix the fixing body 12 and the fixing bolt 15. . Then, the template 4 is inserted from above each anchor material 8.
At the same time, the template 4
The anchor members 8 are fitted into the through holes 5 of the anchor members 8, and the nuts 20 are tightened into the male threaded portions 10 of each anchor member 8. By the above-mentioned operations, the anchor of the present invention is fixed upright on the ground B, and is then buried in the foundation concrete D cast up to the height of the template. When installing the column base, etc., remove the nut 20, align the bolt hole of the column base plate with the anchor material 8, place the column base on the template 4, and attach the washer to the male threaded part 10 of the anchor material 8. The nut 20 is tightened and fixed through the .

As explained above, the anchor of the present invention uses deformed reinforcing bars as the anchor material, and has a structure in which they are integrally connected by the template, the fixing body, and the cage-shaped body provided on the template. In addition to the individual adhesive force and frictional force, the resistance force of the anchoring body and the cage-like body significantly increases the pull-out resistance force, and the anchor as a whole is robust, making it possible to firmly support and fix column bases, etc. I can do it. Furthermore, since the pull-out resistance is large, the length of the anchor can be reduced accordingly, and the thickness of the foundation concrete can be reduced accordingly. Furthermore, the anchor of the present invention can be fixed to the ground via the fixing bolt of the fixing body, and the cage-like body surrounding the anchor can be installed at the same time as the template is connected, making it easy to install and position the anchor. It is easy to use, and there is no risk of movement during the pouring of the foundation concrete.Therefore, there is no need for special consumable equipment such as ropes for fixing anchors, which is required in the past, greatly reducing construction costs. It has many advantages, such as the ability to

[Brief explanation of the drawing]

Fig. 1 is a side view showing the installation state of a conventional anchor, Fig. 2 is a partially cutaway side view showing the installation state of an anchor according to an embodiment of the present invention, and Fig. 3 is an exploded view of the same anchor. It is a slope view. B...Ground, D...Foundation concrete, 4...
Template, 5... Through hole, 7... Basket-shaped body, 8
... Anchor material, 10, 11 ... Male thread part, 12
... Fixing body, 14 ... Waste concrete, 15 ... Fixing bolt, 17 ... Mounting screw part, 20 ... Nut.

Claims (1)

[Scope of utility model registration request] A plurality of anchor materials made of deformed reinforcing bars with male threads formed at the upper ends are attached to the anchoring body fixed to the ground at each lower end, and a cage-like body surrounding the outside of each attached anchor material is attached. An anchor for fixing a column base of a building, etc., characterized in that the upper part of each anchor material is joined below its male threaded part by a template fixed to the lower surface.