JP7160592B2 - Anchor bolt support device - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to an anchor bolt supporting device that supports anchor bolts and is embedded in foundation concrete for arranging the anchor bolts.

An anchor bolt support device is a device for placing anchor bolts in the foundation concrete of a building. Anchor bolts are arranged so that the threads on the upper end side thereof protrude from the foundation concrete. Anchor bolt support devices are fixed to the surface of discarded concrete placed on the foundation ground while supporting the anchor bolts before placing the foundation concrete. embedded in

4 and 5 show an anchor bolt support device 101 described in Patent Document 1. FIG. The anchor bolt supporting device 101 is erected on the surface 102a of the dump concrete 102, and the pile head 103 protrudes from the surface 102a. The anchor bolt support device 101 includes a raised portion 104 erected on the surface 102a, a base portion 105 connected to the raised portion 104 and arranged to straddle the pile head 103, and extending upward from the base portion 105. and a strut portion 107 that supports the anchor bolt 106 . In addition, when the anchor bolt support device 101 is arranged at a place where the pile head 103 does not protrude, the raised portion 104 is not provided, and the base portion 105 is discarded in order to reduce the material cost by reducing the amount of steel material. fixed to

JP 2006-307496 A

The raised portion 104 of the anchor bolt support device 101 described in Patent Document 1 includes a first steel material 108 that is L-shaped in a side view and is fixed to the surface 102a of the dump concrete 102, and a pile head connected to the first steel material 108. It has a second steel material 109 having an L shape in side view, one piece of which extends horizontally so as to avoid 103, and a third steel material 110 having an L shape in side view, connecting the second steel material 109 to the base portion 105. . Since the raised portion 104 is thus formed by combining the three steel members 108, 109, and 110, the mounting work is complicated.

In view of such problems, it is an object of the present invention to provide an anchor bolt support device in which a raised portion for avoiding the pile head can be easily attached.

At least some embodiments of the present invention provide anchor bolts (1) with pile heads (4) standing on protruding surfaces (2a) to support said anchor bolts (1) in place. A support device (1), comprising: a raised portion (6) erected on the surface; a base portion (7) connected to the raised portion and arranged to straddle the pile head; and a strut part (9) extending upward from the part to support the anchor bolt, and the base part has a plurality of base members (10) made of elongated members including flat strips. The base member extends horizontally , the main surface of the belt portion is parallel to the extending direction and the vertical direction, and the raised portion is a raised member (23) erected on the surface. and an extension angle member (24) fixed to the raising member on one end side and fixed to the base member so as to extend the one end side of the base member on the other end side in its extending direction , The extension angle member has a flat plate-shaped horizontal portion (29) that abuts on the lower edge of the one end side of the base member, and a flat plate-shaped horizontal portion (29) that is arranged at right angles to the horizontal portion. and a flat vertical portion (30) fastened so as to overlap the main surface of the portion.

According to this configuration, the raised portion can be configured with a small number of members, and the extension angle member fastened to the base member is locked by coming into contact with the base member at the horizontal portion. rotation is restricted. Therefore, the extension angle member can be stably attached to the base member by the pair of bolts and nuts, and the work is simple. Also, when used in a place where the pile head does not protrude from the surface, it can be used without attaching a raising part, so the amount of steel used can be reduced and the material cost can be reduced. Further, by sliding the extension angle member relative to the base member, the length of the extension can be easily adjusted.

In at least some embodiments of the present invention, in the configuration described above, the base portion has a frame shape, the raised portion is arranged at each corner of the frame shape, and each of the extension angle members is the base member are arranged so as to extend the ends on the same side in the circumferential direction along the frame shape.

According to this configuration, the shape of the extension angle members arranged at the respective corners of the frame shape can be made common.

In at least some embodiments of the present invention, in the above configuration, the support angle material that constitutes the support section is arranged inside the corner of the frame shape, and the support angle material, the base member, and the extension The angle members are characterized by being fastened together by bolts and nuts.

If the bolts and nuts that fasten the base member and the extension angle material are different from the bolts and nuts that fasten the strut angle material and the base member, the bolts and/or nuts that fasten the strut angle material and the base member will be different. Since it protrudes from the surface of the base member, the extension angle cannot be brought into surface contact with the base member. According to this configuration, the extension angle member is stabilized because it is in surface contact with the base member.

In at least some embodiments of the present invention, in any of the above configurations, the raising member and the extension angle member are fastened together by bolts (13) and nuts (14), and the raising member is vertically It is characterized by having an elongated hole (23a) having a long diameter and through which the bolt is inserted.

According to this configuration, the influence of unevenness of the surface on which the anchor bolt supporting device is placed can be absorbed by the position of the bolt with respect to the elongated hole.

In at least some embodiments of the present invention, in any of the above configurations, at least some of the base members are connected to the struts via spacers (15), and the spacers are connected to the central wall (16 ) and a pair of side walls (17) extending by the same length from both ends of the central wall so as to form a right angle with respect to the central wall. One of the extending ends of the pair of side wall portions abuts on the support column, and the other of the central wall portion and the extending ends of the pair of side wall portions abuts on the base member.

According to this configuration, the base member can be arranged so as to avoid the pile cap muscles by a simple task of attaching the spacer.

ADVANTAGE OF THE INVENTION According to this invention, the anchor bolt support apparatus which can attach easily the raising part for avoiding a pile head can be provided.

1 is a front view of an anchor bolt support device according to an embodiment; II-II sectional view in FIG. FIG. 3 is a perspective view of the raising portion of the anchor bolt supporting device according to the embodiment; Front view of a conventional anchor bolt support device Cross-sectional view of a conventional anchor bolt support device

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG.1 and FIG.2 is the front view and cross-sectional view of the anchor bolt support apparatus 1 which concerns on embodiment. The foundation of the building is constructed by driving piles into the ground, placing dump concrete 2 on the ground surface, and pouring foundation concrete 3 on the dump concrete 2. - 特許庁A pile head 4 protrudes from the surface 2a of the dump concrete 2. - 特許庁The anchor bolt 5 is embedded in the foundation concrete 3 of the building on its lower side, and protrudes from the upper surface of the foundation concrete 3 at the threaded portion 5a on the upper end side. An anchor bolt support device 1 is used to arrange the anchor bolts 5 in this manner. After placing the dump concrete 2 , the anchor bolt support device 1 is fixed at a predetermined position while supporting the anchor bolt 5 , and is buried in the foundation concrete 3 by placing the foundation concrete 3 .

The anchor bolt support device 1 arranged at the place where the pile head 4 protrudes is connected to a plurality of raised portions 6 erected on the surface 2a of the dump concrete 2 and the raised portions 6 so as to straddle the pile head 4. and a strut portion 9 extending upward from the base portion 7 and supporting the anchor bolt 5 via a height adjusting mechanism 8 .

The base portion 7 has four base members 10 made of elongated members extending in the horizontal direction. The base members 10 adjacent to each other are arranged so as to form a right angle in the vicinity of each other's ends, and form a rectangular frame shape as a whole (hereafter, the one arranged on the lower side of the paper surface of FIG. 2 is referred to as the first base member). 10a, followed by a second base member 10b, a third base member 10c, and a fourth base member 10d in clockwise order from the first base member 10a. simply referred to as base member 10). The strut portion 9 has four strut angle members 11 arranged inside the corners of the frame-shaped base portion 7 and extending in the vertical direction (hereinafter referred to as first to second The ones adjacent to the clockwise terminal side of the 4 base members are respectively described as the first to fourth support angle members 11a to 11d, and when they are collectively referred to or when they do not need to be distinguished, they are simply referred to as the support angle member 11. note).

Each base member 10 is a strip-shaped steel flat plate having a main surface parallel to its extending direction and vertical direction. Although other long members such as angle members may be used as the base member 10, it is preferable that the base member 10 is composed only of a belt-like flat plate (band portion). When the base member 10 is composed only of the belt portion, the thickness in the horizontal direction perpendicular to the extending direction is smaller than when using angle members, etc., and the pile head 12 protruding from the upper surface of the pile head 4 is reduced. It is easy to avoid, and the amount of steel can be reduced. The strut angle material 11 is made of an equilateral angle steel or a scaleless angle steel. Both ends of the second to fourth base members 10b to 10d are fixed by bolts 13 and nuts 14 so as to abut on the corresponding post angle members 11, respectively.

When the first base member 10a is fixed so as to abut on the first and fourth post angle members 11a and 11d, the first base member 10a cannot avoid the pile head muscle 12, so the first base member 10a is , it is fixed to the first and fourth post angle members 11a and 11d via steel spacers 15. As shown in FIG.

The spacer 15 has a flat central wall portion 16 and a pair of flat flat side wall portions 17 extending from both ends of the central wall portion 16 at right angles to the central wall portion 16 by the same length. 17. The free end surfaces of the pair of side walls 17 , 17 are parallel to the main surface of the central wall 16 . Each spacer 15 abuts on the first or fourth post angle member 11a, 11d on the main surface of the central wall portion 16, and on the free end surface of the pair of side wall portions 17, 17 on the main surface of the first base member 10a. Abut the ends. As a result, the first base member 10a extends perpendicular to the extending direction of the second and fourth base members 10b and 10d, and its main surface is arranged parallel to the vertical direction. . The main surface of the central wall portion 16 is brought into contact with the end portion of the main surface of the first base member 10a, and the free end surfaces of the pair of side wall portions 17, 17 are attached to the first or fourth support angle members 11a, 11d. You may contact|abut. The first base member 10a, the spacer 15, and the first or fourth post angle members 11a, 11d are fastened together by a bolt 13 and a nut 14 whose shaft portions pass between the pair of side wall portions 17,17.

If the first base member 10a can avoid the pile cap 12 without the spacer 15, the spacer 15 may not be used for the first base member 10a. In addition, if the pile head muscles 12 cannot be avoided by fixing the second to fourth base members 10b to 10d so as to abut on the corresponding post angle members 11, the second to fourth base members 10b to 10d are provided with spacers. 15 to the corresponding post angle 11 . By fixing each base member 10 to the support angle material 11, the relative position of the base member 10 and the support angle material 11 is fixed. In order to stabilize the support angle material 11, a reinforcing member 18 made of a belt-shaped steel plate extending in the horizontal direction is arranged between the support angle materials 11, 11 adjacent to each other. It is preferable to secure the corresponding ends of the reinforcement members 18 to the middle portion of the .

The height adjustment mechanism 8 includes a fully threaded bolt 19 extending in the vertical direction and abutting on the inner surface of the corner on the upper end side of the post angle member 11 on the lower end side, and the fully threaded bolt 19 is fixed to the post angle member 11. and a height adjusting nut 21 that is screwed onto the fully threaded bolt 19 and placed on the upper end of the post angle member 11 . Anchor bolts 5 are supported by fully threaded bolts 19 . By fastening both ends of the bending bolt 20 to the support angle material 11 with nuts 14 , the fully threaded bolt 19 is sandwiched between the bending bolt 20 and the support angle material 11 . By weakening the fastening by the bending bolt 20 and the nut 14, the fully threaded bolt 19 can slide up and down with respect to the post angle member 11, and by rotating the height adjusting nut 21, the height of the anchor bolt 5 can be changed. Easy to adjust. In addition, since the height adjustment nut 21 is locked to the upper end of the post angle member 11, the anchor bolt 5 after height adjustment can be temporarily held, and the bending bolt 20 and the nut can be adjusted while maintaining the height. The fastening by 14 is facilitated. A template 22 is attached to the upper end side of the anchor bolt 5 .

At the place where the pile head 4 does not protrude, the base part 7 is placed and fixed on the surface 2a of the dump concrete 2, but at the place where the pile head 4 protrudes, the raised part 6 is attached to the base part 7, The raising part 6 is placed on the surface 2a of the dump concrete 2 and fixed.

FIG. 3 is an enlarged perspective view of the vicinity of the raised portion 6. FIG. As shown in FIGS. 1 to 3, the raised portion 6 includes a raised member 23 erected on the surface 2a of the discarded concrete 2, one end fixed to the upper end of the raised member 23, and the other end fixed to the base portion. and an extension angle 24 secured to 7 . The raised portion 6 is attached to a corner portion of the frame-shaped base portion 7 .

The raising member 23 has a flat plate-shaped bottom wall portion 25 placed and fixed on the surface 2a of the dump concrete 2, and a flat plate-shaped vertical wall portion 26 extending upward from the end of the bottom wall portion 25. It is an L-shaped member in a vertical cross-sectional view. It is preferable that the raising member 23 is provided with a rib 27 along the L-shaped side edge. The bottom wall portion 25 is fixed to the dump concrete 2 by anchor members 28 . The vertical length of the vertical wall portion 26 is longer than the projection length of the pile head 4 . The raising member 23 and the extension angle member 24 are mutually fastened by the bolt 13 and the nut 14, but in order to absorb the influence of unevenness of the surface 2a of the dump concrete 2, the bolt 13 in the standing wall portion 26 of the raising member 23 is inserted. The hole to be formed is preferably a long hole 23a having a long diameter in the vertical direction.

The extension angle member 24 is attached to the base member 10 so as to extend one end side of the corresponding base member 10 (fourth base member 10d in FIG. 3). The extension angle member 24 is made of an equilateral angle steel or a scalene angle steel having a flat horizontal portion 29 and a flat vertical portion 30 arranged perpendicularly upward to the horizontal portion 29 . The horizontal portion 29 contacts the lower edge of the base member 10 on one end side. Further, the horizontal portion 29 is formed by the lower edge of the end of another base member 10 (the first base member 10a in FIG. 3) adjacent to one end of the base member 10 so as to form a right angle, or the lower edge of the spacer 15. is preferably abutted. The vertical portion 30 is arranged so as to overlap the main surface of the base member 10 . The extension angle member 24 is fastened to the standing wall portion 26 of the raising member 23 at one end side of the vertical portion 30 with the bolt 13 and nut 14, and is tightened together with the base member 10 and the post angle member 11 at the other end side. By tightening together, the main surface of the vertical portion 30 can be brought into surface contact with the main surface of the base member 10, and the extension angle member 24 is stabilized. In order to adjust the extension length of the extension angle member 24 with respect to the base member 10, the vertical portion 30 is provided with a plurality of holes through which the bolts 13 can be inserted along the extension direction, or has a long diameter in the extension direction. Slots are preferably provided (not shown). The extension angle member 24 is arranged in the same direction as the base member 10 in the circumferential direction along the frame shape of the base portion 7 so that the raised member 23 and the extension angle member 24 have the same shape such as the arrangement of the holes. It is preferably arranged to extend the end of the side (clockwise terminal side in the example shown). An extension angle member 24 arranged to extend the first base member 10 a is fastened together with the base member 10 , the support angle member 11 and the spacer 15 with a bolt 13 and a nut 14 . Even if the extension angle member 24 is fastened to the base member 10 by the pair of bolts 13 and nuts 14, the horizontal portion 29 is held in contact with the lower edge of the extended end portion of the base member 10. , the extension angle member 24 is prevented from rotating around the axis of the bolt 13 . Therefore, the extension angle member 24 can be stabilized with respect to the base member 10 by fixing with the pair of bolts 13 and nuts 14 .

The main members constituting the raised portion 6 are the raised member 23 and the extension angle member 24, and the extension angle member 24 can be stably fixed to the base member 10 by a pair of bolts 13 and nuts 14. Therefore, the raised portion 6 can be easily attached to the base portion 7 . Since the raising part 6 can be attached or removed as needed, the amount of steel used can be reduced, and the material cost can be reduced.

Even when the spacer 15 is inserted between the base member 10 and the post angle member 11 in order to avoid the pile head muscle 12, the arrangement and orientation of the base member 10 can be adjusted simply by bringing the base member 10 into contact with the spacer 15. As such, installation of the spacers 15 and re-installation of the base member 10 at the construction site is easy.

Although the specific embodiments have been described above, the present invention is not limited to the above embodiments and can be widely modified. For example, the base portion may have a frame shape other than a rectangle or a shape other than the frame shape.

1: Anchor bolt 2: Discarded concrete 2a: Surface 4: Pile head 5: Anchor bolt 6: Raised part 7: Base part 9: Support part 10: Base member 11: Post angle material 12: Pile head muscle 15: Spacer 16: Central wall portion 17: Side wall portion 23: Raising member 23a: Long hole 24: Extension angle member 29: Horizontal portion 30: Vertical portion

Claims (4)

An anchor bolt support device that is erected on a surface with a protruding pile head and supports the anchor bolt in order to place the anchor bolt at a predetermined position,
a raised portion erected on the surface;
a base portion connected to the raising portion and arranged to straddle the pile head;
a strut portion extending upward from the base portion and supporting the anchor bolt;
The base portion has a plurality of base members each made of an elongated material including a flat belt portion, the base member extends in the horizontal direction, and the main surfaces of the belt portions extend in the extending direction and the vertical direction. is parallel to the direction
The raised portion includes a raised member erected on the surface, one end fixed to the raised member, and the other end attached to the base member so as to extend the one end side of the base member in its extending direction . a fixed extension angle;
The extension angle member has a flat plate-shaped horizontal portion that abuts on the lower edge of the one end side of the base member to be extended, and is arranged at a right angle to the horizontal portion. a flat plate-shaped vertical portion fastened so as to overlap the main surface of the belt portion ,
The raising member and the vertical portions of the extension angle member are fastened to each other by bolts and nuts, and the raising member has a long hole having a long diameter in the vertical direction and through which the bolt is inserted . Anchor bolt support device. The base portion has a frame shape,
The raised portion is arranged at each corner of the frame shape,
2. The anchor bolt supporting device according to claim 1, wherein each of the extension angle members is arranged to extend the end portion of the base member on the same side in the circumferential direction along the frame shape. A support angle member constituting the support section is arranged inside the corner of the frame shape,
3. The anchor bolt supporting device according to claim 2, wherein the post angle member, the base member and the extension angle member are fastened together by bolts and nuts. at least a portion of the base member is connected to the support via a spacer;
The spacer has a central wall portion and a pair of side wall portions extending from both ends of the central wall portion by the same length so as to form a right angle with respect to the central wall portion,
One of the central wall portion and the extending ends of the pair of side wall portions is in contact with the support, and the other of the central wall portion and the extending ends of the pair of side wall portions is in contact with the base member. The anchor bolt supporting device according to any one of claims 1 to 3 , characterized in that it abuts.

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