JP2010043468A - Anchor bolt setting apparatus and construction method of foundation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor bolt setting apparatus capable of performing anchor bolt positioning and fixing work accurately in a short time even when there is nothing that can serve as a reference such as a form in the construction of a foundation, and suitably usable for the construction of the foundation of a small, lightweight structure or building. <P>SOLUTION: The anchor bolt setting apparatus (A) includes a plurality of leg members (14); a horizontal member (11) adjustable in height and levelness while extending between the leg members (14); a plurality of supports (1) having movable members (15) mounted in a movable and fixable manner along the horizontal member (11); and a positioning implement (2) removably mountable extending between the respective movable members (15) of the plurality of support (1) and adjustable in height and levelness in the mounted state. The positioning implement (2) has mounting holes (155, 27) provided according to the mounting part of the building to be constructed, to allow anchor bolts to be mounted and removed in a vertical state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an anchor bolt setting device and a foundation construction method. More specifically, in the construction of the foundation, positioning and fixing operations can be performed accurately in a short time even when there is no reference such as a formwork in the vicinity of the position where the anchor bolt is erected. The present invention relates to a structure that can be suitably used for construction of a structure or a foundation of a building.

  In the construction of a structure or a building foundation, an anchor bolt for fixing the structure or the building is set at a required position. A general method for raising the anchor bolt is to position the anchor bolt by passing a horizontal stripe to a required portion of the upper part of the bar arrangement and tie the anchor bolt to the horizontal stripe with a wire or the like.

  In this method, the working efficiency of positioning and fixing work is extremely poor, and a considerable time is required. In addition, when the anchor bolt is in a plurality of locations in one direction, the accuracy is inferior, for example, the street is easily distorted. Furthermore, the strength with the wire is not sufficient, and even after positioning, the anchor bolt is easily tilted or displaced due to the pressure of the concrete at the time of placing the concrete.

  Therefore, instead of fixing the anchor bolt to the reinforcing bar, place the anchor bolt in a state where it is suspended in the required position with a fixture that can be attached to and removed from the formwork, etc. A hitting construction method and apparatus have also been proposed. As such a construction method and apparatus, there exists a thing of patent document 1, for example.

  The “anchor bolt support device for foundation construction” described in Patent Document 1 is provided with an auxiliary plate in parallel and spaced apart from the lower side of a template installed between molds, and an upper end thread portion is inserted into each plate. It is composed of anchor bolts fixed from above and below with clamping nuts. Each anchor bolt is supported vertically by a strong support force at each adjacent column installation position, and the interval between adjacent column installation positions is simple. It can be positioned easily and accurately by an inexpensive interval setting plate with a simple structure, and level adjustment of the grout layer formed between the steel column and the steel column can be easily and accurately set.

JP2007-2111514

However, the above-mentioned “anchor bolt support device for foundation construction” has the following problems.
That is, the position where the anchor bolt is raised is set by laying a template between the reference molds whose positions are determined in advance. However, when there is nothing that can serve as a standard such as a formwork in the vicinity of the position where the anchor bolt is raised in the construction of the foundation, for example, a solid foundation for constructing a small lightweight structure or building such as a carport or a bus stop. In such a simple foundation construction, the anchor bolt cannot be positioned and cannot be used at all in such construction.

(Object of the present invention)
The object of the present invention is to accurately perform positioning and fixing of the anchor bolt in a short time even when there is nothing that can be a reference such as a formwork in the vicinity of the position where the anchor bolt is raised in the construction of the foundation. In particular, it is to provide an anchor bolt setting device and a foundation construction method that can be suitably used for construction of a small and light structure or building foundation such as a carport, a garage, a warehouse, or a bus stop.

Means taken by the present invention to solve the above problems are as follows.
The present invention
A positioning tool that determines the position of the anchor bolt;
Two or more supports that support the positioning tool;
With
The positioning tool
It has an anchor bolt mounting part that is located at a position corresponding to the mounting part of the upper object, and the anchor bolt is detachable,
The support tool includes a height adjusting means for the positioning tool and a leveling adjusting means.
An anchor bolt setting device.

The present invention
A device that raises anchor bolts in foundation construction,
A positioning tool that determines the position of the anchor bolt;
Two or more supports that support the positioning tool;
With
The positioning tool has an anchor bolt mounting portion that is provided in accordance with a mounting portion of a structure or building to be constructed and can be attached and detached in a state where the anchor bolt is oriented in the vertical direction.
The support is
A leg member having height adjusting means;
A horizontal member passed between the leg members;
It has a movable member that can be moved along the length direction of the horizontal member and that can be adjusted in height, and that can attach and remove the positioning tool.
The horizontal member can be adjusted in height and level by the height adjusting means of the leg member.
An anchor bolt setting device.

The present invention
The positioning tool may be provided with joining means for joining another positioning tool in order to extend the positioning tool in the vertical and horizontal directions.

The present invention
A process of arranging a positioning tool in the foundation hole for constructing the foundation on the ground with the position where the anchor bolt is raised as a reference, and setting it horizontally at the required height,
Attaching the required number of anchor bolts to the anchor bolt mounting portion of the positioning tool;
The process of leveling the concrete surface to the required height by placing concrete in the foundation hole and burying the lower part of the anchor bolt,
When the concrete is solidified, the step of removing the positioning tool and the support tool while leaving the anchor bolt embedded in the lower part,
It is the construction method of the foundation including

The present invention
The process of arranging bars in the foundation hole for constructing the foundation on the ground,
Placing a positioning tool above or above the bar arrangement relative to the position where the anchor bolt is raised;
The process of setting and fixing the positioning tool horizontally at the required height using the support tool,
Attaching the required number of anchor bolts to the anchor bolt mounting portion of the positioning tool;
The process of leveling the concrete surface to the required height by placing concrete in the foundation hole and burying the lower part of the anchor bolt,
When the concrete is solidified, the step of removing the positioning tool and the support tool while leaving the anchor bolt embedded in the lower part,
It is the construction method of the foundation including

(Function)
The operation of the anchor bolt setting device according to the present invention will be described. Here, the constituent elements used in the description are assigned in correspondence with the reference numerals given to the respective parts in the embodiments described later. These reference numerals are the same as the reference numerals described in the claims of the claims. Similarly, it is only for the purpose of facilitating understanding of the contents, and the meaning of each component is not limited to the above-described parts.

The anchor bolt setting device (S) is divided into two support tools (1) and a positioning tool (2) before work.
Form a foundation hole (4) with the required shape and depth for constructing the foundation on the ground.
Form reinforcement (5) in the base hole (4).
The positioning tool (2) is placed on the upper part of the bar arrangement with reference to the position where the anchor bolt (3) is raised.

The horizontal member (11) of the support (1) passes roughly over the anchor bolt mounting portion (155, 27) of the positioning tool (2), and the two support tools (1) are inserted into the base hole (4 ) And put it on the ground.
Finely adjust the position of each support tool (1) and adjust the position of the movable member (15) to match the positioning tool (2), and lower each movable member (15) to the height of the positioning tool (2). Then, the positioning tool (2) is fixed to the movable member (15).

  After fixing the positioning tool (2), set the horizontal member (11) so that it is horizontal in the length direction of the positioning tool (2), and the lower surface of the positioning tool (2) is the upper end of the bar arrangement. Adjust the position so that it is slightly higher. At the same time, the horizontal member (11) is adjusted so as to be horizontal so that the positioning tool (2) is horizontal in the width direction.

  Concrete (6) is struck in the foundation hole (4) so that the reinforcing bar (5) is packed, and the lower part of each anchor bolt (3) is buried. Then, the surface of the concrete (6) is leveled so that the height matches the lower surface of the positioning tool (2). When the concrete (6) is solidified, the positioning tool (2) and each support tool (1) are removed, leaving the anchor bolts (3) whose lower part is embedded in the concrete (6). After that, waiting for the concrete (6) to be cured, the foundation work is completed.

  In the present invention, the anchor bolt can be raised by fixing the position of the positioning tool by using the support tool. As a result, even if there is nothing that can serve as a reference in the vicinity of the position where the anchor bolt is raised in the construction of the foundation (or if it is in a position where it cannot be used even if there is a formwork, etc.), Positioning and fixing work can be performed accurately in a short time, and it can be suitably used particularly for the construction of small and light structures such as carports, garages, warehouses, and bus stops, or building foundations.

The present invention will be described in detail based on the embodiments shown in the drawings.
FIG. 1 is an exploded perspective view showing an embodiment of an anchor bolt setting device according to the present invention,
FIG. 2 is a cross-sectional explanatory view showing a foundation construction method using an anchor bolt setting device,
3 is an AA partial cross-sectional explanatory view in FIG.
4 is a partial sectional view BB in FIG.

  The anchor bolt setting device S is composed of two support tools 1 and one positioning tool 2. The number of support tools 1 and positioning tools 2 in one set is not limited to this. For example, as shown in FIG. 1, another positioning tool 2a is extended with bolts and nuts to the positioning tool 2. It can be set as appropriate according to the size and shape of the foundation to be constructed, such as connecting in the vertical direction.

  The support 1 includes a horizontal member 11 having a required length. The horizontal member 11 is formed of a square tube, and guide tubes 12 and 13 having a required length are attached to both ends of the horizontal member 11 via a square tubular holder 19 fixed to the guide tubes 12 and 13. . The guide tubes 12 and 13 have a circular tube shape so that they are perpendicular to the horizontal member 11 and the guide tubes 12 and 13 are parallel to each other. The guide tubes 12 and 13 are movably attached by fitting a holder 19 to the horizontal member 11, and can be fixed to any position of the horizontal member 11 by tightening screws (not shown).

  A leg member 14 is attached to each of the guide tubes 12 and 13. The leg member 14 has a screw rod 140 of a required length, and a square base plate 141 is fixed to the screw rod 140 at a right angle at one end thereof. In the present embodiment, the base plate 141 is simply a flat plate, but it is also possible to provide means for fixing to the mounting portion such as a nail hole.

  A height adjuster 142 is screwed onto the screw rod 140. The height adjuster 142 is composed of a tube body having a thread on the inner surface and two handles (both are not shown). The height adjuster 142 can be moved in both axial directions (up and down in use) along the screw rod 140 by rotating.

  The screw rod 140 is formed to be slightly smaller in diameter than the inner diameters of the guide tubes 12 and 13. The horizontal member 11 is configured such that the guide tubes 12 and 13 are slidably placed on the screw rods 140 of the leg members 14, and the guide tubes 12 and 13 are placed on the tube of the height adjusting body 142. These are installed between the leg members 14. Thereby, if each height adjustment body 142 is moved up and down as mentioned above, the height and levelness of the horizontal member 11 can be adjusted.

  A movable member 15 is attached to the horizontal member 11 so as to be movable and adjustable in the length direction of the horizontal member 11. The movable member 15 includes longitudinal members 150 and 151 that are parallel to each other and a transverse member 152 that connects them at the lower end. The vertical members 150 and 151 and the horizontal member 152 are formed of square tubes. Brackets 153 and 154 protrude and be fixed in the same direction on the side surfaces at the lower ends of the vertical members 150 and 151 (see FIG. 1).

  Each of the brackets 153 and 154 includes a horizontal portion and a triangular reinforcing portion (both of which are omitted). The horizontal portion is provided with an attachment hole 155 into which the anchor bolt 3 can be inserted and attached. Note that the vertical members 150 and 151, the horizontal member 152, and the lower surfaces of the brackets 153 and 154 are provided to be flush with each other.

  A holder 156 is fixed to the vertical members 150 and 151. The holder 156 includes a rectangular substrate 156a, a vertical pressing plate 156c attached to the top of the substrate 156a, and a horizontal pressing plate 156b attached to one side of the substrate 156a. Each presser plate 156b, 156c is formed in a so-called Ω-like shape with five surfaces bent at right angles, and is screwed onto the substrate 156a, whereby the vertical presser plate 156c connects the vertical members 150, 151 to the horizontal presser plate 156b. Thus, a rectangular hole through which the horizontal member 11 can be inserted can be formed.

  The movable member 15 holds the vertical members 150 and 151 at appropriate positions by the vertical pressing plate 156c of the holder 156, and holds the horizontal member 11 at an appropriate position by the horizontal pressing plate 156b and tightens the screw. Thus, the height can be adjusted and the horizontal member 11 can be fixed at a required position.

  The positioning tool 2 is suspended from the movable members 15 of the two support tools 1 installed at a required interval with both ends fixed. The positioning tool 2 can adjust the height and the horizontality by adjusting the height of the horizontal member 11 and the movable member 15 of each support tool 1. The positioning tool 2 is a rectangular frame having an elongated outer shape, and is mainly formed by assembling square tubes. On one end side in the length direction of the two parallel long members 20, 20 constituting the positioning tool 2, a short member 21 that connects the long members 20, 20 at two positions with a predetermined interval in the length direction. , 22 are fixed.

  Similarly, the short members 23 and 24 are fixed at two places on the other end side in the length direction of the long members 20 and 20. In addition, the short members 21 and 24 at both ends in the length direction are formed of angle steel, and bolts and nuts (not shown) for joining the other positioning tools 2a are formed on the vertical portions of the respective short members 21 and 24. Bolt holes 210 and 240 to be mounted are provided at two locations, respectively. The short members 21 and 24 and the bolt holes 210 and 240 constitute a joining means. Also, each long member 20 may be similarly provided with a bolt hole to constitute a joining means for joining the positioning tool 2 in the width direction. Further, the short members 25 and 26 are also fixed at two positions between the inner short members 22 and 23.

  In the long members 20 and 20, mounting holes 27 penetrating in the vertical direction are provided at locations where the short members 21 and 22 and the short members 23 and 24 are fixed. That is, the attachment holes 27 are provided at a total of eight locations, four on one end side in the length direction of the positioning tool 2 and four on the other end side. The anchor bolt 3 can be inserted into each attachment hole 27 and attached in the vertical direction.

  In addition, each attachment hole 27 of the location corresponding to the inner short materials 22 and 23 is distribute | arranged so that it may fit the attachment location of the structure or building constructed on a foundation. The number, position, and the like of each mounting hole 27 are appropriately determined according to the structure or the building. Each mounting hole 27 also serves as a hole for fixing to the brackets 153 and 154 of each movable member 15 via the anchor bolt 3. A method and structure for attaching the positioning tool 2 to the movable member 15 of each support tool 1 will be described later.

As shown in each drawing, the anchor bolt 3 has two nuts 32 and 33 screwed to the lower end portion of the screw rod 31 having a required length in the present embodiment, and the two nuts 34 and 35 are similarly attached to the upper side. The screw is used. The lower nuts 32 and 33 have a function as a stopper for preventing the nuts 32 and 33 from being pulled out by being buried in concrete. The upper nuts 34, 35 have a function of fixing the upper and lower hole edges of the attachment hole 27 or the upper edge of the attachment hole 155 and the lower hole edge of the attachment hole 27.
The structure of the anchor bolt is not limited to this, and an anchor bolt having another structure may be adopted as long as it does not come out from the solidified concrete.

(Function)
With reference to FIG. 1 thru | or FIG. 4, the effect | action of the anchor bolt setting apparatus S which concerns on this Embodiment, and the construction method of a foundation are demonstrated.
Here, a case where a foundation is constructed in the construction of a cantilevered bus stop which is a small and light structure will be described as an example. In this construction, a total of eight anchor bolts are erected in each of two locations with a required interval, with a bias toward one side of the solid foundation.

(1) The anchor bolt setting device S is divided into two support tools 1 and a positioning tool 2 before work.
(2) A base hole 4 having a required depth is formed in a quadrangle for constructing the foundation on the ground. A grit stone (not shown) is laid on the bottom of the base hole 4 and is hardened by rolling.
(3) The reinforcing bar 5 is formed on the grindstone of the base hole 4. The reinforcing bar 5 may be made by assembling reinforcing bars on the spot, or may be made in advance at the factory. In addition, even in the simpler construction that does not install the reinforcement bar 5, since the anchor bolt 3 can be positioned in the air as described later, the construction of the abandoned concrete that serves as the attachment portion when the anchor bolt is erected Is not necessarily required.

(4) The positioning tool 2 is placed on the upper part of the bar arrangement 5 with the position where the anchor bolt 3 is erected as a reference. That is, the mounting holes 27 at the four positions on both ends of the positioning tool 2 are placed so as to match the mounting positions of the structure (upper object) determined in the design.
(5) The horizontal member 11 of the support tool 1 generally passes above the mounting holes 27 at locations corresponding to the short members 22 and 23 so that the two support tools 1 straddle the base hole 4. And place it on the ground GL.

(6) Fine adjustment of the position of the support tool 1 and adjustment of the position of the movable member 15 so as to match the positioning tool 2, loosen the vertical pressing plate 156 c of the holder 156, and move each movable member 15 to the height of the positioning tool 2. The movable member 15 is fixed by tightening the vertical pressing plate 156c. Then, the mounting holes 27 at locations corresponding to the short members 22 and 23 are aligned with the mounting holes 155 of the brackets 153 and 154 of the movable member 15, and the positioning tool 2 is fixed to the brackets 153 and 154 by the anchor bolt 3.

  In this fixing, the screw rod 31 of the anchor bolt 3 is passed through the mounting holes 27 and 155, and the upper edge of the mounting hole 155 and the lower edge of the mounting hole 27 are connected by the upper nuts 34 and 35. It is done by pinching and tightening. In addition, the other anchor bolt 3 passes the screw rod 31 through the mounting hole 27 corresponding to the short members 21 and 24 of the positioning tool 2, and the upper and lower hole edges of the mounting hole 27 by the upper nuts 34 and 35. Fix by tightening with a pin. Thereby, the position of each anchor bolt 3 is determined in a state where it is suspended in the air at a height lower than the ground GL.

  At this time, the distance between the upper end of the screw rod 31 of each anchor bolt 3 and the lower surface of the long member 20 is set to a predetermined distance. That is, as will be described later, since the lower surface of the long member 20 becomes the height of the foundation concrete surface after construction, the distance between the upper end of the screw rod 31 and the lower surface of the long member 20 is from the concrete surface of the foundation of the screw rod 31. It becomes the protruding length.

(7) After fixing the positioning tool 2, the height of the horizontal member 11 is adjusted by the height adjusting body 142 of each leg member 14 of both the support tools 1 so as to be horizontal in the length direction of the positioning tool 2. And the position where the lower surface of the long member 20 of the positioning tool 2 is higher than the upper end of the reinforcing bar 5 by about 50 mm, for example, is adjusted. At the same time, the horizontal adjustment member 142 is adjusted so that the horizontal member 11 is horizontal, and the horizontal direction of the positioning tool 2 is adjusted.

(8) Concrete is struck so as to fill the reinforcing bar 5 in the foundation hole 4, and the lower part of each anchor bolt 3 is buried. Then, the surface of the concrete 6 is leveled so that the height matches the lower surface of the long member 20 of the positioning tool 2.
(9) When the concrete 6 is solidified, the nuts 34 and 35 on the upper side of the anchor bolts 3 are loosened and removed from the screw rods 31, leaving the anchor bolts 3 in which the lower part is embedded, and the positioning tool 2 and each support. Remove tool 1. As a result, each anchor bolt 3 can be accurately set in a predetermined position according to the structure (superior), does not need to be blacked in the work, and does not have a skilled technique in particular. Even a person can perform construction accurately. Moreover, the positioning tool 2 and each support tool 1 can be used repeatedly.
(10) After that, the foundation construction is completed after waiting for the concrete 6 to be cured. In this construction, the surface height of the concrete 6 is at a position lower than the ground GL and is finished so as to be flush with the ground GL with asphalt or the like.

  Note that the terms and expressions used in this specification are merely explanatory and are not limiting at all, and terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to exclude. It goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

The exploded perspective explanatory view showing one embodiment of the anchor bolt set device concerning the present invention. Cross-sectional explanatory drawing which shows the construction method of the foundation which uses an anchor bolt set apparatus. FIG. 3 is a partial cross-sectional explanatory diagram along AA in FIG. BB partial cross-sectional explanatory drawing in FIG.

Explanation of symbols

S anchor bolt setting device 1 support 11 horizontal member 12, 13 guide tube 19 holder 14 leg member 140 screw rod 141 base plate 142 height adjusting body 15 movable member 150, 151 vertical member 152 horizontal member 153, 154 bracket 155 mounting Hole 156 Holder 156a Substrate 156b Horizontal holding plate 156c Vertical holding plate 2, 2a Positioning tool 20 Long material 21, 22, 23, 24 Short material 210, 240 Bolt hole 25, 26 Short material 27 Mounting hole 3 Anchor bolt 31 Screw rod 32 , 33 Nut 34, 35 Nut 4 Foundation hole 5 Reinforcement 6 Concrete

Claims (5)

A positioning tool (2) for determining the position of the anchor bolt;
Two or more supports (1) that support the positioning tool (2);
With
The positioning tool (2)
There is an anchor bolt mounting part (155, 27) at a position corresponding to the mounting part of the upper article and the anchor bolt is detachable,
The support (1) has a height adjusting means (14, 15) of the positioning tool (2) and a leveling adjusting means (14, 15).
Anchor bolt set device. A device that raises anchor bolts in foundation construction,
A positioning tool (2) for determining the position of the anchor bolt;
Two or more supports (1) that support the positioning tool (2);
With
The positioning tool (2) has an anchor bolt mounting portion (155, 27) that is provided in accordance with the mounting portion of the structure or building to be constructed and can be mounted and removed with the anchor bolt oriented in the vertical direction. ,
The support (1)
A leg member (14) having height adjusting means;
A horizontal member (11) passed between the leg members (14);
It has a movable member (15) that can be moved and adjusted in height along the length of the horizontal member (11) and that can be attached and removed from the positioning tool (2).
The horizontal member (11) can be adjusted in height and level by the height adjusting means of the leg member (14).
Anchor bolt set device. The positioning tool (2) includes a joining means for joining another positioning tool (2a) to extend the positioning tool (2) in the vertical and horizontal directions.
The anchor bolt setting device according to claim 1. Positioning the positioning tool (2) in the foundation hole (4) for constructing the foundation on the ground based on the position where the anchor bolt (3) is raised, and setting it horizontally at the required height,
Attaching the required number of anchor bolts (3) to the anchor bolt mounting portions (155, 27) of the positioning tool (2);
Placing concrete (6) in the foundation hole (4) and burying the lower part of the anchor bolt (3), leveling the surface of the concrete (6) to the required height,
When the concrete (6) is solidified, the step of removing the positioning tool (2) and the support tool (1) leaving the anchor bolt (3) embedded in the lower part,
including,
Foundation construction method. The process of placing reinforcements (5) in the foundation holes (4) for constructing foundations on the ground,
Placing the positioning tool (2) above or above the reinforcing bar (5) with reference to the position where the anchor bolt (3) is raised,
Setting and fixing the positioning tool (2) horizontally at the required height using the support tool (1);
Attaching the required number of anchor bolts (3) to the anchor bolt mounting portions (155, 27) of the positioning tool (2);
Placing concrete (6) in the foundation hole (4) and burying the lower part of the anchor bolt (3), leveling the surface of the concrete (6) to the required height,
When the concrete (6) is solidified, the step of removing the positioning tool (2) and the support tool (1) leaving the anchor bolt (3) embedded in the lower part,
including,
Foundation construction method.