JPH0335455B2 - - 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, an anchor A is constructed by attaching an attachment plate 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
It is suspended from a dowel C that is firmly fixed to the ground B with a locking rope 3, etc., and the anchor A is buried in the foundation concrete D together with the dowel C. 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 the present invention was made to improve the problems of the anchor bolt type as described above, and has a fixing body equipped with supporting legs to be fixed to the foundation ground.
By attaching multiple anchor materials using deformed reinforcing bars at each lower end and connecting them with a support plate at the upper end of the anchor materials, the anchors can be easily positioned, and the anchors can be easily positioned by placing concrete. The purpose of the present invention is to provide an anchor for fixing pillar bases, etc., which does not cause positional displacement and does not require the use of special fixing means such as conventional dowels during construction.

Embodiments of the anchor of the present invention will be described below with reference to the drawings.

In Figures 2 and 3, reference numeral 4 denotes an attachment plate on which the base plate of the column base is placed, exposed on the foundation concrete D. Through-holes 5, 5, . Reference numeral 6 denotes an anchor material, which is made of deformed reinforcing steel, and has a tapered part 7 on its upper part that matches the through hole 5.
Following this, there is a male screw part 8 with a small diameter at the top.
is formed, and a male threaded portion 9 is also provided at the lower end thereof. Further, 10 is a fixing body for fixing the anchor materials 6, 6... to the ground B, and in the center thereof, it is placed on the chestnut stone 11 of the ground B, and the lower end is buried and fixed in the waste concrete 12. A bolt hole 14 through which the fixing bolt 13 is inserted is provided, and mounting screw portions 15, 15 are provided on the outer side to screw the lower end male screw portion 9 of each of the anchor materials 6, 6...
... is provided, and furthermore, a fixing body 10 is provided at a proper position on the lower surface.
A support leg 16 is provided above the waste concrete 12 to hold it at a predetermined interval. Typically,
The fixing bolt 13 is inserted into the bolt hole 14, and the nuts 17, 17 are tightened from both the upper and lower directions of the fixing body 10, and the mounting screw portion 15 is inserted into the fixing body 10.
However, the present invention is not limited thereto.

Each anchor material 6 is erected on the fixing body 10 by screwing the male threaded portion 9 at the lower end into each mounting screw portion 15 of the fixing body 10, and the upper part of the anchor material 6 is inserted through the attachment plate 4. They are inserted into the holes 5 and tightened with the nuts 18, so that the through holes 5 and the tapered portions 7 fit together, so that each anchor material 6 can fit into the bolt hole of the column base plate to which it will be fixed later. They are integrally attached in a positional relationship. Further, a plurality of hoop lines 19 are wound around each anchor member 6 between the attachment plate 4 and the fixing body 10 at a required interval above and below to strengthen the connection.

The anchor of the present invention is constructed as described above, and in construction, first, the fixing bolt 13 is erected on the chestnut stone 11 and fixed with the cast concrete 12. Next, the bolt hole 14 of the fixing body 10 is engaged with the fixing bolt 13, and the fixing body 10 is placed on the waste concrete 12 via the supporting legs 16, and the nuts 17, 17 are tightened to fix the fixing body 10 and the fixing bolt 13. Then, the attachment plate 4 is fitted onto the top of each anchor material 6, and the nut 18 is tightened into the male threaded portion 8 of each anchor material 6. By the above work,
The anchor of the present invention is fixed upright on the ground B, and is then buried in the foundation concrete D cast to the height of the attachment plate 4. When installing column bases, etc. , remove the nut 18 and insert the bolt hole of the column base plate into the anchor material 6.
The foot is placed in accordance with the position, and the nut 18 is tightened and fixed to the male threaded portion 8 of the anchor member 6 via the washer.

As explained above, the anchor of the present invention uses deformed reinforcing bars as the anchor material and integrally connects them with the attachment plate and the fixing body. The pull-out resistance force is significantly increased by the resistance force of the anchoring body, and the anchor has an integral structure and is strong, making it possible to strengthen the support and fixation of column bases and the like. In addition, due to its high pull-out resistance,
The length of the anchor can be reduced accordingly, and the thickness of the foundation concrete can be reduced accordingly. In addition, by providing support legs at appropriate locations on the bottom surface of the fixing body to hold the fixing body above the waste concrete at a predetermined distance, an anchor can be placed between the bottom surface of the fixing body and the surface of the waste concrete. The adjustment margin in the vertical direction of the material can be secured, and as a result,
Even if the anchoring body is not fixed horizontally due to differences in the level of the ground or waste concrete, the individual anchor materials can be adjusted in the vertical direction so that the top ends of each anchor material are on the same plane. At the same time, it is possible to avoid contact with spring water from the ground, prevent corrosion due to rust on the anchorage body, maintain the strength of the anchor bolt anchorage device, and discard the reinforcing bars of the foundation beam placed on the top of the anchorage body. Since the reinforcing bars are supported at a distance from each other, the cover thickness of the reinforcing bars can be maintained. Furthermore, since the anchor of the present invention has separate upper and lower anchoring bodies and attachment plates that connect each anchor material, it is easy to transport and assemble and is lightweight, and it can be fixed to the ground via the anchoring bodies. This makes it easy to install and position the anchor, and there is no risk of it moving during the pouring of foundation concrete. It has many advantages, such as being able to reduce construction costs by a large margin.

[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...
Attachment plate, 5... through hole, 6... anchor material,
8, 9...Male thread part, 10...Fixing body, 12...
Waste concrete, 13...Fixing bolt, 15...Mounting screw part, 18...Nut, 19...Hoop line.

Claims (1)

[Claims] 1 Consists of an anchoring body provided with supporting legs that is fixed to the ground, a plurality of anchor materials, and an attachment plate formed separately from the anchoring body, and each anchor is inserted into an insertion hole provided on the outside of the anchoring body. The lower end of each anchor material is inserted and fixed to stand upright, and the upper end of each anchor material is inserted and fixed through a through hole provided on the outer side of the attachment plate, so that the upper end of each anchor material is integrated. An anchor bolt fixing device for buildings, etc., characterized in that it is connected.