JP2004300733A - Mounting structure for anchor bolt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure for an anchor bolt, which enables the anchor bolt to be accurately and easily located in a form of a foundation rise so as not to be displaced, and which enables the height of the anchor bolt to be accurately and easily adjusted. <P>SOLUTION: In this mounting structure for the anchor bolt 10, a lower part is embedded for fixation in concrete 31 which constitutes the foundation rise 30, so that the anchor bolt can be installed in such a manner that a tip part of a male screw part 15 passes through a sill 32 placed on the foundation rise 30 and protrudes above the sill 32. The mounting structure for the anchor bolt comprises: a positioning plate member 12 which is installed in the paired forms 11 in such a manner as to straddle the forms 11; a locating sleeve 13 which is detachably positioned and fixed in the state of being erected on the plate member 12 and whose inner peripheral surface has a female screw part 14; and the anchor bolt 10 which is mounted in the state of being positioned and height-adjusted with respect to the forms 11, by screwing the screw part 15 into the screw part 14 from below. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an anchor bolt mounting structure, and more particularly, to an anchor bolt mounting structure in which a lower portion is buried and fixed to a foundation rising of a residential building and is installed through a base placed on the foundation rising. .
[0002]
[Prior art]
Anchor bolts are used to securely support the load of a house building, while firmly fastening the main body of the house building on a concrete foundation rising that effectively transmits the load to the foundation ground surface. An upper portion is a steel bolt member having an external thread portion used for installation. Such an anchor bolt is installed at a predetermined position between a pair of assembled formwork when constructing the foundation rising by concrete, and the lower part is buried and fixed in the concrete to be cast, The end portion of the male screw portion penetrates the base placed on the foundation rising and is installed so as to protrude above the base.
[0003]
Further, the anchor bolt is buried and fixed at a predetermined mounting position of the foundation standing with high accuracy so that the anchor bolt can be connected and bonded in a state where it is accurately aligned with a metal fitting mounted at a predetermined position of a main body portion of a house building, for example. There is a need. Furthermore, when installing the main part of the house building on the foundation rising, it is possible to easily perform the connection work with the anchor bolt, and the anchor bolt is connected to other members constituting the main part of the house building. It is necessary to adjust the protruding height with high precision so as not to buffer.
[0004]
On the other hand, various positioning tools for anchor bolts have been developed that can easily position and adjust the height of anchor bolts mounted in a mold (for example, see Patent Documents 1 and 2). That is, the anchor bolt locating tool disclosed in Patent Literature 1 is configured such that a strip-shaped base body having a hole for inserting an anchor bolt is formed on a top end surface of a pair of mold frames for erecting a base through a fixing means. And the height is adjusted by engaging a nut screwed into the male screw portion of the anchor bolt on the top surface of the sleeve-like tubular body which is installed upright from the hole. Things. The anchor bolt positioning tool disclosed in Patent Document 2 performs positioning through a mounting hole provided in a frame plate-shaped positioning tool body mounted on a top end surface of a formwork, and stands upright from the mounting hole. The height is adjusted by locking a nut screwed to the male screw portion of the anchor bolt on the top surface of the sleeve-shaped holder locked to the main body.
[0005]
[Patent Document 1]
JP-A-11-50465 [Patent Document 2]
JP 2000-54396 A
[Problems to be solved by the invention]
However, according to the above-described conventional anchor bolt positioning tool, a nut is screwed into a male thread portion of the anchor bolt inserted into the sleeve-like cylindrical body or the holding tool, and the nut is attached to the anchor bolt. The anchor bolt is simply locked to the top surface of the cylinder or the holder so that it does not fall.The anchor bolt is suspended from the top surface of the cylinder or the holder. When concrete is poured into the frame, the anchor bolt may move easily in the tubular body or the holder, and the anchor bolt may be tilted or may be buried and fixed in a state where it is lifted and shifted upward. .
[0007]
In addition, since the anchor bolt is suspended from the top surface of the sleeve-shaped cylinder or the holder via the nut, when the height of the anchor bolt is further adjusted after the anchor bolt is installed on the formwork. For example, the lower part of the anchor bolt is grasped with one hand to push up the male screw portion from the sleeve-shaped cylinder or the holding tool, and after turning the nut to adjust the position of the nut with respect to the male screw portion, the anchor is fixed. Since it is necessary to release one hand holding the bolt and re-lock the nut to the top surface of the cylinder or holder, such height adjustment may not be performed smoothly, and accurate height adjustment may not be possible. Adjustment may be difficult.
[0008]
The present invention has been made in view of such a conventional problem, and it is possible to accurately and easily position and install the anchor bolts on a foundation rising form so as not to move. An object of the present invention is to provide an anchor bolt mounting structure capable of easily and accurately adjusting the height of an anchor bolt even after being installed on a formwork.
[0009]
[Means for Solving the Problems]
According to the present invention, the lower part is buried and fixed in the concrete constituting the foundation rise of the residential building, so that the tip portion of the male screw portion penetrates the foundation placed on the foundation rise, and An anchor bolt mounting structure that is installed so as to protrude from a positioning plate member that is installed so as to straddle a pair of formwork for building up a foundation, and is detachable in a state where the positioning plate member stands upright on the positioning plate member Positioned and fixed to the positioning sleeve having a female screw portion on the inner peripheral surface, and by screwing the male screw portion into the female screw portion from below, the positioning and the height were adjusted with respect to the mold. The object has been attained by providing an anchor bolt mounting structure comprising the anchor bolt mounted in a state. Of the invention).
[0010]
Further, according to the anchor bolt mounting structure of the present invention, the positioning plate member includes a bottom plate having a size that straddles the pair of molds, and a top plate that is disposed at an interval above the bottom plate. A top plate and a side plate connecting side edges of the bottom plate have a U-shaped cross-sectional shape, and the bottom plate and the top plate have a central axis perpendicular to the bottom plate. Sleeve mounting holes arranged so as to be shared are formed respectively, and a fixing screw member is provided on the side plate via a screw hole, so that a screw portion can advance and retreat inside the U-shaped cross section. The positioning portion is positioned in such a manner that both end portions of the positioning sleeve are inserted into the upper and lower sleeve mounting holes, and the screw portion of the fixing screw member is formed into the U-shape so as to press the side surface of the positioning sleeve. Push inside cross section And, it is preferable to fix the positioning sleeve with the positioning plate member (second aspect of the present invention).
[0011]
Further, according to the anchor bolt mounting structure of the present invention, the through hole of the base is inserted into the male screw portion of the anchor bolt in a state where the positioning sleeve is still attached after the foundation rising is formed. Preferably, the contact portion between the anchor bolt and the through hole is reinforced by the positioning sleeve interposed between the outer peripheral surface of the male screw portion and the inner wall surface of the through hole. Item 3)).
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The anchor bolt mounting structure according to one embodiment of the present invention is used to construct a wooden unit house formed by joining and integrating a plurality of house units as a house building. The anchor bolt is buried and fixed with high precision to the foundation rising where the is mounted, so that the housing unit can be efficiently fastened to the foundation rising, with respect to the formwork for forming the foundation rising, This is adopted to enable the anchor bolt to be accurately mounted in a state where the positioning and the height adjustment have been performed.
[0013]
As shown in FIG. 1, the anchor bolt mounting structure according to the present embodiment is constructed such that a lower portion is embedded and fixed in concrete 31 constituting, for example, a foundation rise 30 (see FIG. 5) of a unit house. The anchor bolt 10 is installed at a predetermined position with high precision by penetrating a base 32 (see FIG. 5) mounted on the rising 30 so that the distal end of the male screw portion 15 projects above the base 32. A mounting structure for mounting, comprising: a positioning plate member 12 installed so as to straddle a pair of form frames 11 for building up a foundation; and detachably positioned and fixed in an upright state on the positioning plate member 12. A positioning sleeve 13 having a female screw portion 14 (see FIG. 2) on the inner peripheral surface, and a male screw portion 15 screwed into the female screw portion 14 of the positioning sleeve 13 from below. It makes the anchor bolt 10 for attached while being adjusted positioning and height relative to the pair of mold 11.
[0014]
Further, according to the present embodiment, as shown in FIGS. 2 and 3, the positioning plate member 12 has a bottom plate 16 having a size extending over a pair of molds 11 and a gap above the bottom plate 16. And a side plate 18 connecting side edges of the top plate 17 and the bottom plate 16. The bottom plate 16 and the top plate 17 have a U-shaped cross section. Sleeve mounting holes 19a and 19b are respectively formed so as to share a central axis X perpendicular to the bottom plate 16, and a fixing screw member 21 is formed in the side plate 18 through a screw hole 20. The screw portion 22 is attached to the inside of the U-shaped cross section so as to be able to advance and retreat. Then, the upper and lower ends of the positioning sleeve 13 are inserted into the upper and lower sleeve mounting holes 19a and 19b for positioning, and the screw portion 22 of the fixing screw member 21 is pressed into a U-shaped cross section so as to press the side surface of the positioning sleeve 13. The positioning sleeve 13 is pushed to the inside of the shape to fix the positioning sleeve 13 to the positioning plate member 12.
[0015]
According to the present embodiment, the bottom plate 16 constituting the positioning plate member 12 is formed of, for example, a metal plate having a thickness of about 1 to 5 mm, and for example, a pair of molds facing each other with an interval of 100 to 200 mm. As the size extending over 11, for example, it has a strip-shaped vertically long rectangular shape with a size of about 200 to 300 mm on a long side and about 30 to 100 mm on a short side. In the center of the bottom plate 16, a sleeve mounting hole having an inner diameter that is equal to or slightly larger than the outer diameter of the positioning sleeve 13, for example, about 18 to 20 mm, is defined as an inner diameter through which the positioning sleeve 13 can be loosely inserted. An opening 19a is formed.
[0016]
Further, triangular positioning notches 23 are respectively formed in the short sides on both sides of the bottom plate 16 at the center thereof, and the straight lines connecting the tops of the positioning notches 23 are formed by cutting. Pass through the center of the sleeve mounting hole 19a. Thus, for example, the center of the sleeve mounting hole 19a is extended by extending the foundation upright 30 by installing the bottom plate 16 by aligning the top of the positioning notch 23 with the positioning marking provided on the top end surface of the mold 11 for positioning. It is positioned accurately and automatically at a position that matches the marking in the direction. Further, at both end portions of the bottom plate 16, for example, positioning lines 24 are provided in a direction perpendicular to a straight line connecting the tops of the positioning notches 23. By arranging the bottom plate 16 along a guide line formed by an inner surface or the like, the center of the sleeve mounting hole 19a can be easily positioned such that the center of the sleeve mounting hole 19a is arranged, for example, in the width direction of the foundation rising 30. Has become.
[0017]
Furthermore, according to the present embodiment, a plurality of fixing holes 25 are formed at both ends of the bottom plate 16, and for example, fixing screws 26 are screwed into these fixing holes 25 (see FIG. 4). The positioning plate member 12 positioned over the pair of molds 11 can be easily fixed to the top end surface of the mold 11.
[0018]
The top plate 17 constituting the positioning plate member 12 is made of, for example, the same metal plate as the bottom plate 16. For example, the top plate 17 has a size of about 100 to 200 mm on a long side and about 30 to 100 mm on a short side, and is longer than the bottom plate 16. It has a short band-plate-like vertically long rectangular shape. In addition, the top plate 17 is provided in a cantilever manner so as to be supported by the upper side of the side plate 18 having the same length as that of the top plate 17. Are arranged in parallel with the top plate 17 while maintaining the spacing of. Further, a sleeve mounting hole 19b having a size similar to that of the sleeve mounting hole 19a formed in the bottom plate 16 is provided at the center of the top plate 17 at a center perpendicular to the bottom plate 16 passing through the center of the sleeve mounting hole 19a. An opening is formed at a position sharing the axis X.
[0019]
Here, since the sleeve mounting hole 19a of the bottom plate 16 and the sleeve mounting hole 19b of the top plate 17 are formed so as to share the central axis X, both ends of the positioning sleeve 13 are connected to the sleeve mounting holes 19a, 19b. When the positioning sleeve 13 is attached to the positioning plate member 12 by inserting and locking the positioning sleeve 13 to the positioning plate member 12, it is possible to easily maintain the state in which the positioning sleeve 13 is set upright with respect to the bottom plate 16. Also, when the positioning sleeve 13 is fixed to the positioning plate member 12 by pushing the screw portion 22 of the fixing screw member 21 to the inside of the U-shaped cross-section and pressing the side surface of the positioning sleeve 13 at the center portion, the central pressing is performed. Both end portions sandwiching the portion are firmly supported by the upper and lower sleeve mounting holes 19a and 19b, so that the positioning sleeve 13 can be fixed to the positioning plate member 12 in a stable state.
[0020]
The side plate 18 constituting the positioning plate member 12 is made of, for example, a metal plate similar to the bottom plate 16 and the top plate 17, and has, for example, a size of about 100 to 200 mm on a long side and about 30 to 100 mm on a short side. Also has a strip-shaped vertically long rectangular shape with a short length. The side plate 18 is arranged perpendicularly to the top plate 17 and the bottom plate 16 so as to connect the side edges of the top plate 17 and the bottom plate 16 to form a U-shaped cross-sectional shape together with the top plate 17 and the bottom plate 16. The side plate of the face plate 16 is integrally joined at these intermediate portions except for both end portions. Further, a screw hole 20 is formed in the center of the side plate 18 toward the center axis X of the sleeve mounting holes 19a and 19b. The fixing screw member 21 is screwed and mounted with the 22 being able to advance and retreat.
[0021]
The fixing screw member 21 includes a screw portion 22 having a male screw formed thereon, and a thin cylindrical head portion 27 having a diameter larger than that of the screw portion 22. 22 can be moved back and forth in the direction perpendicular to the central axis X inside the U-shaped cross section. Further, the fixing screw member 21 pushes the screw portion 22 into the inside of the U-shaped cross section, and the screw portion 22 is inserted into the center portion of the side surface of the positioning sleeve 13 in which both ends are inserted through the upper and lower sleeve mounting holes 19a and 19b. The positioning sleeve 13 which has been in the loosely fitted state is fixed to the positioning plate member 12 in a strong and stable state by pressing the tip while abutting.
[0022]
The positioning plate member 12 can be easily formed into a U-shaped cross-sectional shape including a bottom plate 16, a top plate 17, and a side plate 18 by bending a metal plate cut into a predetermined shape. In addition, the bottom plate 16, the top plate 17, and the side plate 18 may be separately formed and joined and integrated by welding or the like to form a U-shaped cross section. Further, the side plate 18 is formed to have a length corresponding to the width of the foundation rising 30, and both side edges of the side plate 18 are arranged along the inner surfaces of the pair of molds 11, so that the positioning plate member 12 is formed. Can be positioned in the width direction of the base rise 30.
[0023]
The positioning sleeve 13, which is positioned and fixed vertically to the positioning plate member 12, has a female threaded portion 14 having a thread diameter similar to that of the male threaded portion 11 of the anchor bolt 10 on the inner peripheral surface. It is a metal fitting. The positioning sleeve 13 has an outer diameter that is equal to or slightly smaller than the inner diameter of the sleeve mounting holes 19a, 19b, for example, about 15 to 18 mm, as an outer diameter that can be freely inserted into the sleeve mounting holes 19a, 19b. It has a length longer than the distance between the bottom plate 16 and the top plate 17, for example, about 15 to 50 mm.
[0024]
Further, the positioning sleeve 13 is inserted in the upper and lower sleeve mounting holes 19a and 19b at both ends, and then the fixing screw member 21 is screwed in and the side surface thereof is pressed by the screw portion 22, so that the positioning plate member is in an upright state. The positioning sleeve 13 can be easily removed from the positioning plate member 12 or the positioning plate member 12 can be easily removed from the positioning sleeve 13 by firmly positioning and fixing the positioning screw member 21 and releasing the pressing by loosening the fixing screw member 21. I can do it.
[0025]
In order to attach the anchor bolt 10 to the formwork 11 in a state where the anchor bolt 10 is positioned and height-adjusted using the anchor bolt attaching structure of the present embodiment, for example, first, it is necessary to accurately attach the anchor bolt 10 through the positioning notch 23 and the positioning line 24. After positioning the bottom plate 16 so as to straddle the top end surfaces of the pair of molds 11 horizontally arranged at the same height, the fixing screws 26 are screwed into the fixing holes 25 to fix the positioning plate member 12. It is mounted and fixed at a predetermined position on the mold 11. Next, both ends of the positioning sleeve 13 are inserted into the upper and lower sleeve mounting holes 19a and 19b positioned at the mounting position of the anchor bolt 10 by the positioning of the positioning plate member 12, and the positioning sleeve 13 is inserted into the fixing screw member 21. And fix it vertically upright. After the positioning sleeve 13 is fixed to the sleeve mounting holes 19a and 19b in advance, the positioning plate member 12 can be positioned and fixed to the top end surface of the formwork 11.
[0026]
Then, the female screw portion 14 of the positioning sleeve 13 which is accurately positioned at the mounting position of the anchor bolt 10 in this manner and is vertically erected and fixed is attached to the anchor bolt 10 disposed inside the pair of molds 11. The male screw portion 15 is screwed from below, and the amount of screwing and the amount of protrusion of the positioning sleeve 13 projecting upward while rotating the anchor bolt 10 are adjusted to accurately adjust the height of the anchor bolt 10. It is possible to easily install the device in a state where it is set.
[0027]
Here, the height of the anchor bolt 10 is adjusted by directly screwing the male thread 15 of the anchor bolt 10 directly to the female thread 14 of the positioning sleeve 13 which is accurately positioned and vertically erected and fixed. However, since the adjustment is performed by adjusting the screwing amount of the male screw portion 15, even after the anchor bolt 10 is installed on the formwork, the upper portion is supported by the fixed positioning sleeve 13. Such height adjustment can be easily and accurately performed.
[0028]
After the anchor bolts 10 have been positioned and adjusted in height as described above, concrete 31 is cast inside the pair of molds 11 as shown in FIG. According to the present embodiment, the male screw portion 15 of the anchor bolt 10 is directly screwed into the female screw portion 14 of the positioning sleeve 13 which is firmly erected and fixed. The upper part is supported by the fixed positioning sleeve 13 so that the positioning and the height adjustment can be firmly maintained, so that the anchor bolt 10 is not moved while the concrete 31 is being poured. It is possible to effectively avoid tilting or rising and shifting upward.
[0029]
That is, according to the present embodiment, the anchor bolt 10 can be accurately and easily positioned and installed on the mold 11 of the foundation rising 30 so as not to move, and the anchor bolt 10 is installed on the mold 11. Even afterward, the height adjustment of the anchor bolt 11 can be easily and accurately performed.
[0030]
When the lower part is buried and fixed in the concrete 31 and the anchor bolt 10 is installed on the foundation rising 30, the fixing screw member 21 is loosened, the positioning plate member 12 and the formwork 11 are removed, and as shown in FIG. The base 32 is placed on the upper surface of the foundation rising 30 while the male screw portion 15 of the bolt 10 is inserted into the through hole 33. Further, a floor panel 34 of, for example, a housing unit is placed on the upper surface of the base 32 while being supported by the mounted base 32, and a joint metal 35 attached to a predetermined position of the base unit is penetrated through the base 32 to mount the base. By joining the male screw part 15 of the anchor bolt 10 projecting upward from the nut 32 via a nut member 36, the housing unit constituting the main body of the house building is fastened to the foundation rising 30.
[0031]
According to the present embodiment, the anchor bolt 11 is attached to the male thread portion 15 with the positioning sleeve 13 still attached after the foundation rising 30 is formed and the positioning plate member 12 is removed. When the through hole 33 is inserted, the positioning sleeve 13 is interposed between the outer peripheral surface of the male screw portion 15 and the inner wall surface of the through hole 33. Therefore, the contact portion between the anchor bolt 11 and the through hole 33 is reinforced by the positioning sleeve 13, and for example, the inner wall surface of the through hole 33 of the base 32 made of a wooden material and the outer peripheral surface of the anchor bolt 11 made of a metal material For example, when a large lateral load is applied to the base 32, the pressure at the contact portion is reduced, thereby preventing damage to the base 32 due to crushing of the inner wall surface or the like. It is possible to avoid it effectively.
[0032]
It should be noted that the present invention is not limited to the above embodiment, and various changes can be made. For example, the positioning plate member does not necessarily need to have the configuration of the above-described embodiment, but may employ a member having various other configurations that can be removably positioned and fixed with the positioning sleeve standing upright. Further, the positioning sleeve does not necessarily need to be kept attached to the anchor bolt after the foundation standing is formed, and can be removed and diverted together with the positioning plate member. Further, the present invention is not limited to a unit house, and can be employed when positioning an anchor bolt at the foundation rising of various other structures.
[0033]
【The invention's effect】
According to the anchor bolt mounting structure of the present invention, it is possible to accurately and easily position and install the anchor bolt on the formwork at the foundation rising, even after the anchor bolt is installed on the formwork. In addition, the height of the anchor bolt can be easily and accurately adjusted.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an anchor bolt mounting structure according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view illustrating a configuration of an anchor bolt mounting structure according to an embodiment of the present invention.
FIG. 3 is a perspective view illustrating a configuration of an anchor bolt mounting structure according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view illustrating a situation where concrete is cast in a formwork.
FIG. 5 is a cross-sectional view illustrating a state where a housing unit is installed at the start of the foundation.
[Explanation of symbols]
Reference Signs List 10 anchor bolt 11 formwork 12 positioning plate member 13 positioning sleeve 14 female screw portion of positioning sleeve 15 male screw portion of anchor bolt 16 bottom plate 17 top plate 18 side plate 19a, 19b sleeve mounting hole 20 screw hole 21 fixed screw member 22 Screw portion 23 of fixing screw member Positioning notch 24 Positioning line 25 Fixing hole 26 Fixing screw 30 Foundation rise 31 Concrete 32 Base 33 Base through hole 34 Floor panel 35 Joint hardware X Central axis

Claims (3)

The lower portion is buried and fixed in the concrete constituting the foundation rise of the residential building, so that the tip portion of the male screw portion penetrates the foundation placed on the foundation rise and projects above the foundation. An anchor bolt mounting structure installed on the
A positioning plate member that is installed so as to straddle a pair of formwork for constructing a foundation, and a positioning sleeve having a female screw portion on an inner peripheral surface, which is removably positioned and fixed while standing on the positioning plate member. And an anchor bolt which is attached to the formwork in a state where the male screw portion is screwed into the female screw portion from below so as to be positioned and adjusted in height. Mounting structure. The positioning plate member is a bottom plate having a size that straddles the pair of molds, a top plate that is disposed above the bottom plate with a space therebetween, and connects a side edge of the top plate and the bottom plate. It has a U-shaped cross-sectional shape consisting of a side plate that
The bottom plate and the top plate each have a sleeve mounting hole arranged so as to share a central axis perpendicular to the bottom plate, and the side plate has a fixing screw through a screw hole. A member is attached to the inside of the U-shaped cross-section so that the screw portion can advance and retreat,
Position the positioning sleeve by inserting both ends of the positioning sleeve into the upper and lower sleeve mounting holes, and push the screw portion of the fixing screw member into the inside of the U-shaped cross section so as to press the side surface of the positioning sleeve. The anchor bolt mounting structure according to claim 1, wherein the positioning sleeve is fixed to the positioning plate member. The anchor bolt, the through hole of the base is inserted through the male screw portion in a state where the positioning sleeve is mounted after the foundation standing is formed, the outer peripheral surface of the male screw portion and the through hole The anchor bolt mounting structure according to claim 1 or 2, wherein a contact portion between the anchor bolt and the through hole is reinforced by the positioning sleeve interposed between the inner wall surface and the positioning sleeve.

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