JPH0410282Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an anchor bolt fixing device used for fixing column bases of buildings, etc.

[Conventional technology]

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 this method is used because it allows a large amount of space on the foundation floor and is easy to construct. , anchor bolts are often used.

The anchor bolt type is a method in which anchor bolts are embedded in the concrete of the foundation structure, and generally, as shown in Fig. 5, a steel frame 21 is assembled and fixed onto the disposable concrete 12, and the steel frame 21 is fixed. Anchor bolts 22 are attached and concrete A is cast to bury the anchor bolts 22. This method has the advantage that the anchor bolts 22 are firmly fixed because the steel frame 21 is interposed, but since it uses a special consumable item called the steel frame 21, it takes time and effort to assemble, and Not only does the frame 21 tend to obstruct the foundation reinforcing bars, but it also has the disadvantage that it is difficult to locate the anchor bolts if the steel frame 21 is set in the waste concrete 12 or assembled with poor precision.

[Problem that the invention attempts to solve]

The present invention aims to improve the problems in the prior art and provide a positioning function so that the anchor bolt can be easily buried in the correct position.

[Means for solving problems]

FIG. 1 shows the configuration of the device of the present invention corresponding to an embodiment;
Referring to FIG. 2, the present invention fixes and connects a plurality of anchor bolts 3 through the upper and lower support plates 1 and 6 at their upper and lower ends, respectively. The lower end of the anchor bolt 3 is inserted into a free through hole 9 formed in a fixing body 8 fixed to the ground and has a larger diameter than the anchor bolt, and is fixed by tightening nuts 15 and 16. be.

〔Example〕

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

In Figures 1 and 2, 1 is an upper support plate for fixing the upper part of the anchor bolts 3, 3 when assembling the anchor bolts 3, 3, and is a base plate of the column base (not shown) to be fixed. Bolt holes 2, 2 (see FIG. 2) are provided at positions corresponding to the bolt holes provided in the . Reference numeral 3 denotes an anchor bolt, which is made of a deformed reinforcing bar, and has a screw rod portion 4 at its upper portion that can penetrate into the bolt hole 2 described above, and a similar screw rod portion 5 at its lower portion. Reference numeral 6 denotes a lower support plate that connects the lower ends of each anchor bolt 3, 3 with bolt holes 7, 7 similar to the bolt holes 2 of the upper support plate 1.
(See Figure 2). Furthermore, 8 is a fixing body for fixing the anchor bolts 3, 3 to the ground B, and is formed in approximately the same size as the lower attachment plate 6, and has a free through hole with a considerably larger diameter than the bolt hole 7. 9,9 (see Figures 2 and 4)
are provided at positions corresponding to the bolt holes 7, 7. Further, leg rods 10, 10 each having a U-shaped cross section are fixed to the lower surface of the fixing body 8.
At 0, fixing bolts 13, 13 are placed on the chestnut stone 11 on the ground B, and their lower ends are buried and fixed in the waste concrete 12.
(See Figure 1) Bolt holes 14, 14
(See Figure 2).

Then, a lower attachment plate 6 is attached on the fixing body 8, and the lower end of each anchor bolt 3, 3 is inserted into the bolt hole 7 and the free through hole 9, and a nut screwed into the threaded rod portion 5 is attached. 15 and nut 16 with washer
The fixing body 8 and the lower attachment plate 6 are sandwiched and tightened, and the upper ends of each anchor bolt 3, 3 are inserted into the bolt holes 2, 2 of the upper attachment plate 1,
Both sides are sandwiched and tightened by nuts 17, 17 screwed into the threaded rod portion 4.

The anchor bolt fixing device of the present invention is constructed as described above, and in construction, first, the fixing bolt 13 is erected on a piece of stone and fixed with a cast concrete 12. Next, the fixing bolt 13 is engaged with the bolt hole 14 of the fixing body 8, and the fixing body 8 is placed on the waste concrete 12 via the leg rod 10, and the nut 18 is tightened to fix the fixing body 8 and the fixing bolt 13. It is.

In this way, the device of the present invention is fixed upright on the ground B, and is then buried in the foundation concrete A, which has been cast to the height of the lower part of the threaded rod portion 4. When fixing the device on the ground B, if the fixing position of the fixing bolt 13 is not accurate, the anchor bolt 3 protruding from the upper support plate 1 will not match the bolt hole of the column base plate of the building, and the fixing bolt Even if the fixing position of the anchor bolt 13 is accurate, it is actually extremely difficult to correctly and upright the anchor bolt 3 at a predetermined position.

Therefore, when installing the device of the present invention, the anchor bolt 3 protruding from the upper support plate 1 should be attached to the column base plate with the lower end of the anchor bolt 3 slightly loosened by the nut 15 and washer nut 16. After setting it in the correct position matching the bolt hole, the nut 15 and washer nut 16 are strongly tightened to fix the anchor bolt 3 in the correct position, and the foundation concrete A is poured. To explain the specific method, a reference line a that matches the installation position of the column base is displayed on the top surface of the waste concrete 12, and a reference line that is perpendicular to the upper support plate 1 (see Fig. ), and on this base line b, hang the suspension rod 18,
18 is temporarily installed, and a plumb bob 19, 19 is attached to the tip of it.
If the tip of the anchor does not match the reference lines a and a, as shown in FIGS. After the attachment plate 1 is moved and matched, the nut 15 and the washer nut 16 are tightened to fix it. After the concrete A is poured and hardened, the upper support plate 1 is removed.

[Effect of idea]

As explained above, the device of the present invention uses a plurality of anchor bolts, the lower ends of which are tied together by an upper attachment plate and a lower attachment plate, and these are fixed to waste concrete using a fixing body. Therefore, a strong anchor frame can be constructed using the anchor bolt itself without using a steel frame for fixing the anchor bolt, and the pull-out resistance is significantly increased due to the resistance force between the anchor and the lower attachment plate. Ru. In addition, the lower end of the anchor bolt is loosely inserted into the enlarged free through hole of the fixing body and fixed by tightening the nut, so the positioning can be done while the anchor bolt is temporarily fixed to the fixing body. After that, the position of the anchor bolt can be adjusted by an extremely simple operation of tightening and fixing the nut, and there are many advantages such as being able to easily bury the anchor bolt in the correct position.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the device of the present invention;
Figure 2 is a perspective view showing each member of the device separated, Figure 3 is a perspective view illustrating the anchor bolt positioning work, and Figure 4 shows the main parts marked with dotted lines in Figure 3. FIG. 5 is a side sectional view showing a conventional device. A... Foundation concrete, B... Ground, 1...
Upper attachment plate, 2... Bolt hole, 3... Anchor bolt, 4... Threaded rod portion, 6... Lower attachment plate, 7... Bolt hole, 8... Fixing body, 9... Free through hole, 10 ...Legs, 11...Kurite, 12...Scrambler, 13...Fixing bolts.

Claims (1)

[Scope of utility model registration request] A plurality of anchor bolts are fixed at their upper and lower ends by penetrating the upper support plate and the lower support plate, and the lower end of each anchor bolt is formed into an anchor bolt fixed to the ground. An anchor bolt fixing device characterized by being inserted into a larger diameter free through hole and fixed by tightening a nut.