JP2000110240A - Anchor bolt fixing washer, and anchor bolt fixing structure using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel anchor bolt fixing washer which is capable of fixing a column unit to a desired position even when an anchor bolt is off-centered from the reference position, free from strength reduction or increase in man-hour, and an anchor bolt fixing structure using it. SOLUTION: A circular projecting fitting adjustment part 11 to be fitted in a washer receiving hole 6 in a base plate 3 and a locking flange part 12 to hold an outer circumferential part of the washer receiving hole 6 on a nut tightening surface side of the base plate 3 are provided, and an anchor bolt hole 13 is formed to allow the locking flange part 12 to pierce so that the off-centered position is different to the fitting adjustment part 11. Since the fitting adjustment part 11 is circular and projecting, the position of the anchor bolt hole 13 can be set to an arbitrary position in 360 deg. by turning the fitting adjustment part, and thus, even an anchor bolt 5 off-centered in either direction can be inserted in the anchor bolt hole 13 so long as the eccentricity is within the permissible value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between an anchor bolt on a foundation of a structure and a pillar unit, and more particularly, to a position where an anchor bolt is eccentrically installed from a reference position. The present invention relates to a washer for fixing an anchor bolt and a structure for fixing an anchor bolt using the same, which can connect an anchor bolt and a column unit without requiring bending or the like for correction.

[0002]

BACKGROUND OF THE INVENTION A pillar unit in a steel frame, a steel reinforced concrete structure, a tent warehouse, or the like is fixed by bolting a column unit to an anchor bolt buried in a foundation. . In such a construction method, during curing of the foundation, it is inevitable that the anchor bolt is eccentric from a reference position which is a design position where the anchor bolt should be originally installed due to vibration, error, etc. during construction. This is the actual situation.

Conventionally, in order to absorb the eccentricity of the anchor bolt as described above and fix the column unit 2A 'at a desired position, an anchor bolt hole 13' formed in the base plate 3 'is shown in FIG. As shown in a), the anchor bolt 5 ′ is bored with a large inner diameter having a clearance in the diameter. However, the clearance is limited by law to be within +5 mm of the diameter of the anchor bolt 5 ′. If the eccentricity is further increased, a work called so-called rectification is performed.

[0004] For example, in the case of building a tent warehouse or the like, the restoring operation corrects the tip of the anchor bolt 5 'to a reference position by bending the anchor bolt 5' as shown in Fig. 11B. According to such rebuilding work, the pillar unit 2
Although A 'can be installed at a desired position, the strength of the anchor bolt 5' is reduced by bending and the cost is increased due to an increase in the number of steps such as bending.

In order to eliminate such bending, an invention for absorbing the eccentricity of the anchor bolt and fixing the column unit at a desired position has been made.
No. 2 is filed as a "fine adjustment device for column base hardware".
The present invention uses an adjustment washer, which is two disc-shaped washers having a circular hole eccentric with respect to the center, in combination with a sliding washer, and adjusts the circular hole provided in the base plate. The eccentricity of the anchor bolt is reduced by fitting a washer, inserting the anchor bolt into the circular hole provided in the sliding washer, and fitting the sliding washer into the circular hole provided in the adjusting washer. It absorbs and adjusts the position of the column base hardware (column unit) with respect to the anchor bolt. However, in reality, the combination of two members, an adjustment washer and a slide washer, requires a manufacturing process for each member, which limits the reduction of manufacturing costs and complicates inventory management. It has been turned into. In addition, it is inevitable that the strength is reduced by the configuration of combining the two members, and finding the optimum position from the relative positional relationship between the adjustment washer and the slide washer is very troublesome work at the actual site. It is expected to be.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of such a background, and a fixing washer which has been conventionally adjusted in position by combining two members is constituted as a single member. By reducing the manufacturing cost and simplifying inventory management, the adjustment range of the anchor bolt hole is set continuously without overlapping, and even if the anchor bolt is eccentric from the reference position, the pillar unit is desired. The technical issue was to develop a new washer for fixing an anchor bolt and a structure for fixing an anchor bolt using the same, which can be fixed at a position of the anchor bolt without lowering the strength of the anchor bolt and increasing man-hours. It is.

[0007]

According to a first aspect of the present invention, there is provided a washer for fixing an anchor bolt according to the first aspect of the present invention, comprising a circular convex fitting adjusting portion fitted into a washer receiving hole of a base plate, and a nut fastening surface side of the base plate. And a locking flange portion for pressing an outer peripheral portion of the washer receiving hole, and an anchor bolt hole is passed through the locking flange portion so that the eccentric position is different from the fitting adjustment portion. It is characterized by being formed by. According to the present invention, since the fitting adjusting portion has a circular convex shape, the position of the anchor bolt hole can be set to an arbitrary position of 360 ° by rotating the fitting adjusting portion. Even if the anchor bolt is eccentric in any direction,
It can be inserted into the anchor bolt hole. Further, since the fitting adjustment portion is fitted into the washer receiving hole, lateral displacement of the washer does not occur.

According to a second aspect of the present invention, in addition to the requirement of the first aspect, the anchor bolt fixing washer is formed so that the anchor bolt hole is centered on a position eccentric in the diameter direction from the center of the fitting adjustment portion. The position of the anchor bolt hole is determined by the difference between the eccentric amount in the diametric direction in one of the fitting adjustment portions and the eccentric amount in the diametric direction in the other fitting adjustment portion. It is characterized in that the position is the size of the clearance. According to the present invention, the eccentricity range of the anchor bolt carried by the anchor bolt hole in one fitting adjustment portion and the eccentricity range of the anchor bolt carried by the anchor bolt hole in the other fitting adjustment portion are determined. Since it can be set differently and continuously, it is possible to widen the eccentricity range of the anchor bolt carried by one fixing washer.

According to a third aspect of the present invention, in addition to the above requirements, the fitting adjustment portion is vertically opposed to the locking flange portion so as to sandwich the locking adjustment portion, and the engagement adjustment portion is provided integrally with the locking flange portion. The eccentric position of each fitting adjustment portion with respect to the stop flange portion is made different, and one or a plurality of anchor bolt holes penetrating the fitting adjustment portion and the locking flange portion are formed. . According to the present invention, any of the upper and lower fitting adjusting portions can fit into the washer receiving hole, and the eccentric amount of the anchor bolt hole in one fitting adjusting portion and the anchor in the other fitting adjusting portion can be adjusted. By making the amount of eccentricity of the bolt hole different, the eccentricity range of the anchor bolt carried by one fixing washer can be widened.

According to a fourth aspect of the present invention, in addition to the requirement of the first or second aspect, the washer for fixing the anchor bolt is integrated such that the fitting adjustment portion is directly eccentrically overlapped vertically. Each of the fitting adjusting portions also serves as a locking flange portion in relation to the other fitting adjusting portions, and one or a plurality of anchor bolt holes penetrating these two fitting adjusting portions are formed. Become. According to the present invention, any of the fitting adjustment portions can be fitted into the washer receiving hole, and the eccentric amount of the anchor bolt hole in one fitting adjustment portion and the anchor bolt in the other fitting adjustment portion can be adjusted. By making the amount of eccentricity of the hole different, the eccentricity range of the anchor bolt carried by one fixing washer can be widened.

According to a fifth aspect of the present invention, in the anchor bolt fixing washer according to the first aspect of the present invention, the fitting adjusting portion is provided only on the lower surface of the locking flange portion. It is characterized in that two or more anchor bolt holes penetrating the portion and the locking flange portion are formed. According to the present invention, the eccentricity ranges of the anchor bolts carried by the individual anchor bolt holes can be varied and set continuously, so that the eccentricity range of the anchor bolts carried by one fixing washer is reduced. Can be wider.

According to a sixth aspect of the present invention, in addition to the requirements of the first, second, third, or fourth aspect, the diameter of the fitting adjustment portion is determined by the following equation (1). It is characterized by the following. Formula 1: Fitting adjustment part diameter ≧ 2 × (2 × clearance + anchor bolt diameter / 2 + a) (a is the minimum value required to maintain body strength) According to the present invention, the diameter of the fitting adjustment part is required Since the diameter is not increased as described above, the inner diameter of the washer receiving hole to be fitted with the fitting adjusting portion does not become unnecessarily large, and the strength of the base plate does not decrease.

According to a seventh aspect of the present invention, in addition to the requirement of the fifth aspect, the diameter of the fitting adjusting portion is determined by the following equation (2). Formula 2: fitting adjustment section diameter ≧ 2 × anchor bolt receiving hole inner diameter + 2a + b (a is a minimum value required to maintain the body strength) (b is a value obtained by adding a clearance dimension to a) Since the diameter of the fitting adjustment portion is not increased more than necessary, the inner diameter of the washer receiving hole fitted with the fitting adjustment portion does not become unnecessarily large, and the strength of the base plate does not decrease.

According to a further aspect of the present invention, in addition to the above requirements, the fitting adjusting portion has a wedge-shaped cross section. According to the present invention, the fixing washer and the base plate can be firmly integrated by the biting action by the taper.

According to a ninth aspect of the present invention, in the anchor bolt fixing structure, a base plate having a washer receiving hole corresponding to a reference position of the anchor bolt provided in a buried state with respect to the foundation is fitted to the washer receiving hole. The fixing washer is fitted into the washer receiving hole of the base plate, and the anchor bolt is inserted into the anchor bolt hole of the fixing washer. In the fixing structure for fixing the column unit by tightening, the washer for fixing the anchor bolt according to claim 1, 2, 3, 4, 5, 6, 7 or 8 is applied, and the fixing is performed. For the washer, the fitting adjustment part selected according to the eccentric state of the anchor bolt and the washer receiving hole is fitted into the washer receiving hole,
It is characterized by tightening a nut. According to the present invention, the anchor bolt can be inserted into the anchor bolt hole without performing a rebuilding operation requiring bending or the like of the anchor bolt, so that the base plate can be easily formed without lowering the strength. Can be installed at the reference position. The problem is solved by using the configuration of the invention described in each claim.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on the illustrated embodiments. FIG. 1 shows a foundation part of a pillar in a method of building a steel frame, a steel reinforced concrete structure, a tent warehouse, etc., which is fixed by the anchor bolt fixing structure of the present invention. The fixing washer 1 is used as one element to perform the fixing.

First, an outline of the fixing structure will be described. Reference numeral 2 denotes a pillar of a building to which a square steel pipe is applied as an example. The pillar unit 2A is constituted by having a square base plate 3 at the lower end thereof. This is fixed to an anchor bolt 5 provided buried with respect to the foundation 4. The base plate 3 has an anchor bolt 5
The washer receiving holes 6 are formed at the four corners corresponding to the reference position P. The washer receiving hole 6 is a circular hole obtained by further increasing the diameter of the anchor bolt hole of the conventional type, and has an inner diameter dimension substantially equal to the diameter of the fitting adjustment portion 11 of the fixing washer 1 described later (this embodiment). In the form, the diameter is 40 mm as an example)
And

When an H-shaped steel is used as the column 2, the washer receiving hole 6 formed in the base plate 3 is
Since it can be located between the flanges of the section steel (in plan view), the base plate 3 can be positioned as compared with the case where a square steel pipe is used.
Can be reduced.

Here, the reference position P means a design position where the anchor bolt 5 is to be installed. Hereinafter, a deviation of the anchor bolt 5 from the reference position P and a fixing washer 1 described later will be described. Anchor bolt hole 1 in
The deviation of 3 is called eccentricity.

Next, the fixing washer 1 will be described in more detail. The fixing washer 1 can take various forms as will be described later. First, a basic embodiment shown in FIG. 2 and corresponding to claims 1, 2, 3 and 6 will be described. I do. The fixing washer 1 in the present embodiment is provided with a washer receiving hole 6 in the base plate 3.
And a locking flange portion 12 for pressing an outer peripheral portion of the washer receiving hole 6 on the nut fastening surface side of the base plate 3.
Further, the fitting adjusting portion 11 is vertically opposed to the locking flange portion 12 with the holding flange portion 12 interposed therebetween, and the eccentric positions of the fitting adjusting portions 11A and 11B with respect to the locking flange portion 12 are different. At the same time, these fitting adjustment portions 11A,
An anchor bolt hole 13 penetrating through 11B and the locking flange 12 is formed. That is, in the present embodiment, the eccentric positions of the fitting adjusting portions 11A and 11B with respect to the locking flange portion 12 are made different from each other, so that the upper and lower fitting adjusting portions 11A and 11B and the locking flange portion 1 are formed.
One anchor bolt hole 13 penetrating through each of the fitting adjustment portions 11A and 11B is substantially different in eccentric position.

The fitting adjusting section 11A and the fitting adjusting section 11B have the same outer shape.
1B are positioned such that their centers are diametrically shifted from each other by a dimension (5 mm) of a clearance described later provided in the anchor bolt hole 13.

Further, as described above, the anchor bolt hole 13 is formed around a position eccentric in the diametrical direction from the center of the fitting adjusting portion 11, and in forming the anchor bolt hole 13, there is described in claim 2. As described above, the difference between the amount of eccentricity in the diametric direction in one of the fitting adjusting portions 11A and the amount of eccentricity in the diametric direction of the other fitting adjusting portion 11B is equal to the size of the clearance provided in the anchor bolt hole 13. (5m
m).

Further, in FIG.
A, the anchor bolt hole 13 is
The anchor bolt hole 13 in the lower fitting adjusting portion 11B is formed at a position eccentric to the center of the fitting adjusting portion 11B by 7.5 mm from the center of the fitting adjusting portion 11B. By forming around a position eccentric to 0.5 mm, the difference (7.5-2.5 [mm]) between the displacements of the anchor bolt holes 13 corresponds to the dimension of the clearance provided in the anchor bolt holes 13 (5 mm). ).

In this embodiment, the diameter of the anchor bolt 5 is 16 mm, while the diameter of the anchor bolt hole 1 is 1 mm.
The inner diameter of 3 is set to 21 mm, which is the diameter of the anchor bolt 5 plus the clearance dimension of 5 mm. Further, the diameter φ ₁₁ of the fitting adjusting section 11 is determined by the following equation (1). Equation 1: φ ₁₁ ≧ 2 × (2 × clearance + anchor bolt diameter / 2 + a) “a” is a minimum value required for maintaining the main body strength, and is 2 mm in the present embodiment. As described above, the clearance is 5 mm in the present embodiment, and the diameter of the anchor bolt is 16 mm. Therefore, in the present embodiment, φ ₁₁ = 40 mm.

Fixing washer 1 constructed as described above
One of the fitting adjustment portions 11A and 11B vertically integrated with the locking flange portion 12 is fitted into the washer receiving hole 6, and the locking flange portion 12 is engaged with the base plate 3 in a flange shape. Which fitting adjustment portion 11 is fitted into the washer receiving hole 6 is determined by the amount of eccentricity of the anchor bolt 5. In the present embodiment, when the eccentricity of the anchor bolt 5 is 0 to 5 mm, the fitting adjusting portion 11B is fitted into the washer receiving hole 6. Specifically, FIG.
As shown in (b), the center of the fitting adjustment portion 11B overlaps with the reference position P of the anchor bolt 5 when fitted in the washer receiving hole 6, and the eccentric amount of the anchor bolt 5 is zero. In the case of, the anchor bolt 5
Is inserted into the anchor bolt hole 13 and is in contact with the left end. When the eccentric amount of the anchor bolt 5 is 5 mm, the anchor bolt 5 is inserted into the anchor bolt hole 13 and is in contact with the right end as shown by a solid line.

When the fixing washer 1 is rotated while being fitted in the washer receiving hole 6, the position of the anchor bolt hole 13 is shifted by 360 °, so that the eccentric amount of the anchor bolt 5 is reduced to the above-mentioned zero. The eccentric direction does not matter as long as it is within the range of ５5 mm. Thus, anchor bolt 5
When the amount of eccentricity is in the range of 0 to 5 mm, the anchor bolt 5 is inserted into the anchor bolt hole 13 by fitting the fitting adjusting portion 11B into the washer receiving hole 6. Is possible.

On the other hand, the eccentric amount of the anchor bolt 5 is 5
In the case of の 10 mm, the fitting adjustment portion 11A is fitted into the washer receiving hole 6. Specifically, as shown in FIG.
The center of the fitting adjustment portion 11A overlaps with the reference position P of the anchor bolt 5 in a state fitted in the washer receiving hole 6, and is indicated by a dashed line when the eccentric amount of the anchor bolt 5 is 5 mm. Thus, the anchor bolt 5 is inserted into the anchor bolt hole 13 and is in contact with the right end. When the amount of eccentricity of the anchor bolt 5 is 10 mm, the anchor bolt 5 is inserted into the anchor bolt hole 13 and is in contact with the left end as shown by a solid line. Therefore, similarly to the case where the fitting adjustment portion 11B described above is fitted into the washer receiving hole 6, the anchor bolt 5
When the amount of eccentricity is within the range of 5 to 10 mm, the anchor bolt 5 is inserted into the anchor bolt hole 13 by fitting the fitting adjusting portion 11A into the washer receiving hole 6. Is possible.

In manufacturing the fixing washer 1, the fitting adjusting portion 11 and the locking flange portion 12 are formed as separate members, and these are joined in a superposed state by spot welding or the like, or An appropriate manufacturing method can be adopted, such as manufacturing as a single member by casting, shaving, or the like.

The anchor bolt fixing washer 1 of the present invention has the above-described configuration as an example. Hereinafter, the anchor bolt fixing structure of the present invention using this is described.

[Construction of Foundation] First, the anchor 4 is positioned in an appropriate formwork, and concrete is cast to construct the foundation 4. At this time, usually, as shown in FIG. 4A, the anchor bolt 5 is often eccentric about several mm from the reference position P due to vibration, error, and the like during construction. Next, when the concrete has hardened, a reference line Lb is drawn on the upper surface of the foundation 4 to clarify the design place of the column unit 2A.

[Placement of Column Unit] Next, a column unit 2A constructed by welding a base plate 3 to the bottom of a column 2 is placed on a foundation 4, and at this time, an anchor bolt 5 is attached to a washer on the base plate 3. The receiving hole 6 is inserted. Then, as shown in FIG. 4B, a reference line Lp passing through the center of the base plate 3 is drawn on the base plate 3 in advance, and the reference line Lp and the reference line Lb on the base 4 are matched. And centering the column unit 2A. At this time, since the anchor bolt 5 is shifted from the reference position P by about several mm, the center of the anchor bolt 5 is eccentric with respect to the center of the washer receiving hole 6 (reference position P) in plan view. I have.

[Fitment of Fixing Washers] Next, the fitting adjusting section 11 is selected according to the eccentric amount of the anchor bolt 5, and the anchoring bolt hole 1 is set in a state where the fitting adjusting section 11 is lowered.
The fixing washer 1 is lowered so that the anchor bolt 5 is inserted into the anchor bolt 3, and the fitting washer 11 is fitted to the washer receiving hole 6 by rotating and moving as appropriate. In the present embodiment, since the inner diameter of the washer receiving hole 6 is 40 mm, the range of the eccentricity of the anchor bolt 5 having a diameter of 16 mm is 0 to 10 mm.
mm, and if this fitting does not fit into the washer receiving hole 6 when one of the fitting adjusting portions 11 is lowered, the fixing washer 1 is turned over. , Are almost certainly fitted. That is, for example, when the eccentric amount of the anchor bolt 5 is 9 mm, the range of the eccentric amount allowed by the fitting adjustment unit 11B is 0 to 5
mm, the fitting adjustment portion 11B does not fit into the washer receiving hole 6. In this case, since the range of the amount of eccentricity allowed by the fitting adjustment unit 11A is 5 to 10 mm, the fitting adjustment unit 1
If 1A is selected, the fitting adjusting portion 11A fits into the washer receiving hole 6.

In this embodiment, when the amount of eccentricity of the anchor bolt 5 is 0, the fitting adjustment portion 11B is fitted into the washer receiving hole 6 to insert the anchor bolt 5 into the anchor bolt hole 13. However, for example, the eccentric amount of the anchor bolt 5 is large as a whole, and therefore, the allowable range of the eccentric amount of the anchor bolt 5 is set to, for example, 5 to 15.
In the case where the fixing washer 1 having a thickness of 1 mm is used, it is desirable to prepare the fixing washer 1 having an allowable eccentricity of 0 mm.

When the fitting washer 1 is fitted, if the thickness of the fitting adjusting portion 11 is made smaller than the thickness of the base plate 3, as shown in FIG. Since a clearance is provided between the upper surface and the lower surface of the fitting adjustment section 11, a convex portion is formed on the upper surface of the foundation 4 or pebbles S or the like are located as shown in FIG. Even in such a case, it works advantageously for securing the tightening allowance, and does not cause rattling or the like.

The eccentric amount of the anchor bolt 5 is within the allowable range of the fixing washer 1 (0 to 10 mm in the present embodiment).
5B, if the excess is minute, the anchor bolt 5 can be bent in the space of the clearance as shown in FIG.
The anchor bolt 5 can be inserted into the anchor bolt hole 13. In this case, since only a slight bending is required as compared with the conventional method, the strength does not decrease.

[Tightening of Nuts] When the fixing washers 1 are fitted into all the washer receiving holes 6 as described above, all the anchor bolts 5 are fixed as shown in FIG. The clearance is within 5 mm with respect to the inner diameter of the hole 13. In this state, the nut 7 is tightened with respect to the anchor bolt 5, thereby setting the column unit 5A at the design reference position P. Thus, the anchor bolt fixing structure of the present invention is completed, which does not cause a decrease in strength and an increase in the number of steps such as bending when the bending of the anchor bolt 5 is performed.
Further, since the fitting adjusting portion 11 is fitted into the washer receiving hole 6, even when a stress is applied to the column unit 5A, the fixing washer 1 does not cause a lateral displacement.

[0037]

Other Embodiments The fixing washer 1 of the present invention can be modified in various ways as described below in addition to the basic embodiment described above.

[0038]

[Embodiment in which the fitting adjusting portions are directly integrated so as to vertically overlap each other] This embodiment is a fixing washer 1 according to the first, second, fourth and sixth aspects. That is, as shown in FIG. 6, a circular convex fitting adjusting portion 11 fitted into the washer receiving hole 6 of the base plate 3 and a member for pressing the outer peripheral portion of the washer receiving hole 6 on the nut tightening surface side of the base plate 3. And a stop flange portion 12. The fitting adjustment units 11 are integrated so as to directly overlap one another vertically and eccentrically, and each of the fitting adjustment units 11 is
In this relation, one or a plurality of anchor bolt holes 13 which also serve as the locking flange portions 12 and penetrate these two fitting adjustment portions 11 are formed. As described above, the fixing washer 1 of the present embodiment is obtained by removing the locking flange portion 12 of the fixing washer 1 described in the above-described basic embodiment, and by fitting the fitting adjusting portion 11A and the fitting adjusting portion. 11B are integrated so that they directly overlap one another up and down. When one fitting adjustment portion 11 is fitted into the washer receiving hole 6, the other fitting adjustment portion 11 is engaged with the locking flange portion 12.
As a function.

Further, the anchor bolt hole 13 is provided in claim 2
As described in the above, it is formed around a position eccentric in the diametric direction from the center of the fitting adjusting portion 11, and the position is the amount of eccentricity in the diametric direction in one fitting adjusting portion 11. And the difference between the eccentric amount in the diameter direction of the other fitting adjustment section 11 and the position (5 mm) of the clearance provided in the anchor bolt hole 13.

As described above, in the present embodiment, one of the fitting adjusting portions 11 is fitted into the washer receiving hole 6 in the same manner as in the basic embodiment described above. Even when the adjusting part 11 is fitted with the washer receiving hole 6,
The other fitting adjusting portion 11 is for pressing the outer peripheral portion of the washer receiving hole 6 on the nut fastening surface side of the base plate 3. Therefore, since the configuration and positional relationship of the upper and lower fitting adjusting portions 11 are the same as the configuration and positional relationship of the fitting adjusting portion 11 in the basic embodiment, detailed dimensions and fixing of the anchor bolts are described here. The description of the structure is omitted.

[0041]

[Embodiment in which the fitting adjustment portion is provided only on the lower surface of the locking flange portion] This embodiment is a fixing washer 1 according to the first, fifth and seventh aspects. That is, as shown in FIG. 7, a circular convex fitting adjusting portion 11 fitted into the washer receiving hole 6 of the base plate 3, and the base plate 3
And a locking flange portion 12 for pressing an outer peripheral portion of the washer receiving hole 6 on the side of the nut tightening surface. The fitting adjusting portion 11 is provided only on the lower surface of the locking flange portion 12, and is formed with two or more anchor bolt holes 13 passing through the fitting adjusting portion 11 and the locking flange portion 12. It is. In the present embodiment, two holes, an anchor bolt hole 13a and an anchor bolt hole 13b, are provided as an example. By drilling as an anchor bolt hole 1
The range of the amount of eccentricity allowed by 3a was set to 7 to 11 mm, while the range of the amount of eccentricity allowed by anchor bolt hole 13b was set to 11 to 15 mm.

The diameter φ ₁₁ of the fitting adjusting section 11 is determined by the following equation (2). Equation 2: φ ₁₁ ≧ 2 × inner diameter of anchor bolt hole + 2a + ba is the minimum value required for maintaining the strength of the main body, and is 2 mm in the present embodiment. On the other hand, b is a numerical value obtained by adding the dimension of the clearance to a, and in the present embodiment, the allowable clearance was set to 4 mm, so that b = 2 + 4 = 6 mm. In the present embodiment, since the anchor bolt diameter is 16 mm, φ ₁₁ = 50 mm. Therefore, the inner diameter of the washer receiving hole 6 in the base plate 3 to which the fitting adjusting section 11 is fitted was also set to 50 mm.

When this is used, there is a difference from the previous embodiment, and this difference will be described below. When the fixing washer 1 is fitted, the anchor bolt 5 is shifted from the reference position P by about several mm as shown in FIG. 8, so that the center of the anchor bolt 5 is the center of the washer receiving hole 6 in plan view (reference It is eccentric with respect to the position P). And anchor bolt 5
Bolt holes 13a or 13b depending on the eccentric amount of
Of the anchor bolt holes 13a or 13b with the fitting adjustment portion 11 being lowered.
Then, the fixing washer 1 is lowered so that the anchor bolts 5 are inserted, and the fitting washer 11 is fitted to the washer receiving hole 6 by appropriately rotating and moving the washer.

In this embodiment, since the inner diameter of the washer receiving hole 6 is 50 mm, the range of the eccentricity of the anchor bolt 5 having a diameter of 16 mm is only 7 to 15 mm. If the fitting adjustment portion 11 does not fit into the washer receiving hole 6 when the anchor bolt 5 is inserted into the hole 13a or 13b, the anchor is inserted into the other anchor bolt hole 13b or 13a. If the bolt 5 is inserted, the fitting can be performed almost certainly. That is, for example, when the eccentric amount of the anchor bolt 5 is 13 mm, the range of the eccentric amount allowed by the anchor bolt hole 13 a is 7 to 11 mm, so that the fitting adjustment unit 11 fits into the washer receiving hole 6. Don't get stuck. In this case, since the range of the amount of eccentricity allowed by the anchor bolt hole 13b is 11 to 15 mm, if the anchor bolt hole 13b is selected, the fitting adjusting section 11 fits into the washer receiving hole 6.

[0045]

[Embodiment in which the cross-sectional shape of the fitting adjusting portion is wedge-shaped] In the above-described three embodiments, the fitting surface between the fitting adjusting portion 11 and the washer receiving hole 6 is in a vertical state in a sectional view. As shown in FIG. 9 corresponding to the description of claim 8, the cross-sectional shape of the fitting adjusting portion 11 is various wedge shapes, and similarly, the cross-sectional shape of the washer receiving hole 6 is also wedge-shaped. The fitting surface between the portion 11 and the washer receiving hole 6 may be tapered in a sectional view. More specifically, FIG. 9A shows a wedge-shaped cross-sectional shape of the fitting adjustment portion 11 of the fixing washer 1 according to the third embodiment, as shown in FIG. 9B. This is one in which the cross-sectional shape of the fitting adjustment portion 11 of the fixing washer 1 according to the fourth aspect is a wedge shape. In this case, the fixing washer 1 and the base plate 3 can be firmly integrated by the biting action by the taper.

FIG. 9C shows the fitting adjusting section 1.
The fitting shape of the washer 1 and the washer receiving hole 6 is a wedge shape and a part is in a vertical state. In this case, the washer 1 and the base plate 3 can be firmly integrated by the biting action by the taper. Can be made, and since the part is a vertical surface, the resistance against the lateral displacement of the washer 1 is increased. 9 (d), the outer peripheral portion of the washer receiving hole 6 is locked on the nut 7 fastening surface side of the base plate 3 as shown in FIG. 9 (d). Even if the structure is not pressed by the flange portion 12, the washer 1 and the base plate 3 can be firmly integrated by the biting action by the taper.

[0047]

[Embodiment of Providing a Plurality of Anchor Bolt Holes] As shown in FIG.
2 is provided only on one side, and a case where a plurality of anchor bolt holes 13 are formed in one fixing washer 1 has been described. An embodiment in which is provided can be adopted. That is, as shown in FIGS. 10 (a) and 10 (b), the two fitting adjusting portions 11 are vertically opposed to each other, and different eccentric states are obtained only by one anchor bolt hole 13. And two or more anchor bolt holes 13
Is provided, a further different eccentric state can be obtained. Of course, even when the fitting adjustment portion 11 is provided only on one surface of the locking flange portion 12 as shown in FIG. 10C, a further different eccentric state can be obtained by additionally providing the anchor bolt holes 13. it can.

In the above embodiment, the inner diameter of the anchor bolt hole 13 is a value obtained by adding a clearance (within the diameter of the anchor bolt 5 +5 mm) to the diameter of the anchor bolt 5 due to legal restrictions. If it is not necessary to take such restrictions into account, FIG.
A plurality of anchor bolt holes 13 may be provided as shown in FIG. Of course, also in this case, it is performed within a range that does not impair the strength of the main body.

[0049]

According to the present invention, the column unit 5A can be fixed at a desired position even when the anchor bolt 5 is eccentric, and the strength of the anchor bolt 5 is reduced and the number of man-hours is increased. It is possible to provide a new washer for fixing an anchor bolt and a new anchor bolt fixing structure using the same.

[Brief description of the drawings]

FIG. 1 is a perspective view, a front view, and a plan view showing an anchor bolt fixing structure of the present invention.

FIG. 2 is a plan view showing a fixing washer according to the basic embodiment;
It is a front view and a bottom view.

FIG. 3 is a perspective view showing a positional relationship between a fixing washer and an anchor bolt.

FIG. 4 is an explanatory view showing stepwise the construction of the anchor bolt fixing structure.

FIG. 5 is a cross-sectional view for explaining an operation of a clearance between a fitting adjustment section and a foundation.

6A and 6B are a plan view, a front view, and a bottom view, respectively, showing a fixing washer in which a fitting adjustment unit is directly integrated so as to vertically overlap.

FIGS. 7A and 7B are a plan view and a front view showing a fixing washer provided with a fitting adjusting portion only on a lower surface of a locking flange portion.

FIG. 8 is an explanatory view showing stepwise another embodiment of the construction of the anchor bolt fixing structure.

FIG. 9 is a vertical cross-sectional view showing an embodiment in which the cross-sectional shape of the fitting adjusting section is a wedge shape.

FIG. 10 is a perspective view showing an embodiment in which a plurality of anchor bolt holes are provided.

FIG. 11 is a vertical sectional side view and a plan view showing a conventional connection structure between a pillar unit and an anchor bolt accompanied by a work of restoring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixing washer 2 pillar 2A pillar unit 3 base plate 4 foundation 5 anchor bolt 5A pillar unit 6 washer receiving hole 7 nut 11 fitting adjustment part 11A fitting adjustment part 11B fitting adjustment part 12 locking flange part 13 anchor bolt hole 13a Anchor bolt hole 13b Anchor bolt hole Lp Reference line Lb Reference line P Reference position S Pebble

Claims (9)

[Claims] A base plate having a circular convex fitting adjustment portion fitted into a washer receiving hole, and a locking flange portion for pressing an outer peripheral portion of the washer receiving hole on a nut fastening surface side of the base plate; A washer for fixing an anchor bolt, wherein an anchor bolt hole is formed so as to penetrate the locking flange so that the eccentric position is different from the fitting adjustment part. 2. The anchor bolt hole is formed around a position diametrically eccentric from the center of the fitting adjusting portion, and the position of the anchor bolt hole is diametrically eccentric in one fitting adjusting portion. The fixing of the anchor bolt according to claim 1, wherein the difference between the amount of core and the amount of eccentricity in the diameter direction of the other fitting adjustment part is a position corresponding to the size of a clearance provided in the anchor bolt hole. Washers. 3. The fitting adjusting portion is vertically opposed to the locking flange portion so as to sandwich the locking adjusting portion, and the eccentric position of each fitting adjusting portion with respect to the locking flange portion is made different. 3. The washer for fixing an anchor bolt according to claim 1, wherein one or a plurality of anchor bolt holes are formed to penetrate the fitting adjusting portion and the locking flange portion. 4. The fitting adjusting portions are integrated so as to directly overlap one another vertically and eccentrically, and each fitting adjusting portion also serves as a locking flange portion in relation to another fitting adjusting portion, and 2. The device according to claim 1, wherein one or a plurality of anchor bolt holes penetrating the two fitting adjusting portions are formed.
Or a washer for fixing the anchor bolt according to 2. 5. The method according to claim 1, wherein the fitting adjustment portion is provided only on a lower surface of the locking flange portion, and two or more anchor bolt holes penetrating the fitting adjusting portion and the locking flange portion are formed. The washer for fixing an anchor bolt according to claim 1. 6. The apparatus according to claim 1, wherein the diameter of the fitting adjusting section is determined by the following equation (1).
A washer for fixing the described anchor bolt. Formula 1: Fit adjustment part diameter ≧ 2 × (2 × clearance + anchor bolt diameter / 2 + a) (a is the minimum value required to maintain the body strength) 7. The washer for fixing an anchor bolt according to claim 5, wherein the diameter of the fitting adjusting portion is determined by the following equation (2). Formula 2: fitting adjustment part diameter ≧ 2 × anchor bolt hole inner diameter + 2
a + b (a is the minimum value required to maintain the strength of the body) (b is the value obtained by adding the clearance dimension to a) 8. The washer for fixing an anchor bolt according to claim 1, wherein the fitting adjusting section has a wedge-shaped cross section. 9. A base plate provided with a washer receiving hole corresponding to a reference position of an anchor bolt provided in an embedded state with respect to a foundation, and a fixing washer fitted in the washer receiving hole, A fixing structure in which the fixing washer is fitted into a washer receiving hole of the base plate, the anchor bolt is inserted into the anchor bolt hole of the fixing washer, and a nut is fastened to the anchor bolt to fix the column unit. , The fixing washer is the anchor bolt fixing washer described in claim 1, 2, 3, 4, 5, 6, 7, or 8, and the fixing washer is provided with an anchor bolt, a washer receiving hole, A fixing structure for anchor bolts, wherein a fitting adjustment part selected according to the eccentric state of the above is fitted into the washer receiving hole and a nut is tightened.