JP2002371633A - Foundation anchor bolt of building and settlement correcting method of the building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foundation anchor bolt easy in operation when a structure is simple and settled and corrected, exactly settle and correct a building without any modification in the structure of a floor or the like in the inside of the building, thus make a construction period needing settlement and correction very short as compared with the conventional method and suppress a construction cost low. SOLUTION: An outer cylinder 2 for forming a female screw on the inner face of an anchor bolt 1 and an anchor bolt body 3 for forming a first male screw part 3a screwed on the female screw of the outer cylinder on the lower part and forming a second male screw part 3b screwing a nut on the upper part are provided. A handle part 4 for normally and reversely rotating an anchor bolt body is provided between the first male screw part and the second screw part. The anchor bolt body is normally and reversely rotated to be extended and contracted to the outer cylinder by operating the handle part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation anchor bolt, a settlement correction tool, and a settlement correction method that can easily perform settlement correction after building construction.

[0002]

2. Description of the Related Art Generally, a conventional anchor bolt for a building in a conventional building is provided so that a base portion is embedded in a foundation and an upper end portion protrudes from an upper surface of the foundation.

FIG. 24 shows an example of a structure around a foundation in a steel frame building. Two anchor bolts 52 projecting from the upper surface of a foundation 51 are attached to a foundation block 5.
3 is fixed by nuts 54, 54, and a pillar 55 and a connecting member 56 are fixed to the foundation material block 53 by bolts and nuts 57, 57.

A metal base 58 made of aluminum or the like is attached to the inside of the foundation 51 with screws 59, 59, and a metal obiki 60 made of aluminum or the like is attached to the inside of the metal base. A floor material 61 is provided.

[0005] By the way, when the building is tilted due to the subsidence of the ground around the building or the fluctuation of the groundwater level, necessary parts of the building are jacked up and the building is returned to a horizontal state. Subsidence repair methods for repairing parts are widely used.

[0006] When settlement is corrected in the above-mentioned conventional steel-framed building, first, concrete on the foundation 51 at the lower part of the column where correction is required is cut off and the anchor bolt 5 is removed.
The upper half of 2 is exposed, and the nut 54 is removed. Thereafter, the base material block 53 is raised to a predetermined correction height by a hydraulic jack, and the base material block is supported on a foundation by an appropriate cradle and the jack is removed.

Next, the exposed portion of the anchor bolt is cut, and a new anchor bolt is connected. At this time, it is common to weld a female screw tube to the lower end of a new anchor bolt in advance, cut a male screw at the tip of the original anchor bolt, connect them, and then weld and fix them around.

After the new anchor bolts are added, the foundation block 53 is fixed to the anchor bolts with nuts 54, and the anchor bolts, including the connection portions, are backfilled with concrete to the lower surface of the foundation block 53.

In the settlement method for the conventional foundation structure described above, the nut for fixing the foundation material block 53 to the anchor bolt must be removed, so that the settlement operation must be performed from the inside of the foundation. Before modification, the construction of the inner part of the foundation, ie the foundation 5
8. It is necessary to remove the obiki 60 and the floor material 61 in advance, and there is a work of returning them to the original state after correction.

In particular, in the area around water such as a bathroom, there are many cases where the interior is tiled, and construction after repair requires a large amount of cost and time. In addition, a complicated operation of cutting the anchor bolt once and connecting the anchor bolt again is required, and the structural strength of the anchor bolt may be reduced.

Therefore, it takes a long time to correct the settlement, the cost of construction is high, and the construction requires skill. Furthermore, the work of removing and restoring each part inside the foundation requires a lot of work. There is a problem that specialists such as carpenters and plasterers have to do this.

FIG. 25 shows a structure around a foundation in a wooden building. A base 73 is attached to an anchor bolt 72 protruding from the upper surface of the foundation 71, and a washer 74 is provided.
Are fixed with nuts 75, and columns 76 are erected on the base 73. In addition, the code | symbol 77 in FIG. 25 is the breast (bracing) with which the base end was attached to the connection part of a base and a column, 78 is a joist, and 79 is a floor material, respectively.

When settlement is corrected in the above-described conventional wooden building, first, concrete on the foundation 71 at the lower part of the column where correction is required is cut off to expose the lower surface of the base 73, and hydraulic pressure is applied to the lower surface of the base. A nut 75 for setting the jack and fixing the base to the anchor bolt 72
Remove. Thereafter, the base 73 is raised to a predetermined corrected height by a hydraulic jack, and the base is supported on a foundation by an appropriate receiving stand, and the jack is removed.

Next, the concrete around the anchor bolt is cut off, the upper half of the anchor bolt is exposed and cut at a required position, and a new anchor bolt is connected. At this time, the female screw cylinder is welded to the lower end of the new anchor bolt in advance, the male screw is cut at the tip of the original anchor bolt, these are connected, and the surrounding area is welded and fixed. Is the same as in the case of subsidence correction.

After adding a new anchor bolt, the base 73 is fixed to the anchor bolt 72 with a nut 75,
Anchor bolts are back-filled with concrete up to the lower surface of the base 73 including the connection portion.

In the above-mentioned settlement correction for a wooden building, as in the case of settlement for a steel building,
Work must be performed from the inside of the foundation by removing the structure such as the floor and obiki on the inside of the foundation, and anchor bolts must be added. This requires a construction period and increases construction costs.

In addition, when submerging anchor bolts in addition to the settlement of steel or wooden structures, new anchor bolts are drilled from the underside of the foundation block or base into these foundation blocks or foundation. It is necessary to insert nuts into the base material block or on the base.However, in the case of the base material block, the top plate of the block is obstructed, and in the case of the base, the breast 77 is obstructed, and the work is difficult. There is also a problem.

[0018]

The object of the present invention is to provide an anchor bolt for a foundation which has a simple structure and is easy to operate when correcting settlement, without changing the structure of a floor or the like inside a building. An object of the present invention is to make it possible to accurately correct settlement of a building, so that the construction period required for settlement is significantly shorter than that of a conventional method, and the construction cost can be reduced.

[0019]

In order to achieve the above object, an anchor bolt according to the present invention comprises: an outer cylinder having an internal thread formed on an inner surface thereof;
An anchor bolt body having a lower portion formed with a first male screw portion screwed to the female screw of the outer cylinder and an upper portion formed with a second male screw portion screwed with a nut; A handle portion for rotating the anchor bolt body forward and backward between the portion and the second male screw portion, and by operating the handle portion, the anchor bolt body is rotated forward and reverse, and the anchor bolt body is It has a configuration that can be extended and contracted with respect to the outer cylinder.

The first settlement method according to the present invention is characterized in that an outer cylinder having an internal thread formed on an inner surface thereof, a first male thread portion screwed to the internal thread of the outer cylinder is formed on a lower portion, and a nut is formed on an upper portion. And an anchor bolt main body formed with a second male screw portion with which the first bolt is screwed.
A handle portion is provided between the male screw portion and the second male screw portion for rotating the anchor bolt main body in the forward and reverse directions. By operating the handle portion, the anchor bolt main body rotates in the normal and reverse directions, and the anchor bolt main body is rotated. A method for correcting settlement of a building in which a foundation material is fixed between a foundation and a nut screwed into a second male screw portion of an anchor bolt by an anchor bolt which is extended and contracted with respect to the outer cylinder, wherein a handle portion of the anchor bolt is provided. By rotating the anchor bolt main body upward, the foundation material is raised to a required correction height, and the correction is performed without operating the nut screwed to the second male screw portion.

Further, the second settlement correcting method according to the present invention is characterized in that an outer cylinder having an internal thread formed on an inner surface thereof, a first male thread portion screwed to the internal thread of the outer cylinder is formed on a lower portion, and a nut is formed on an upper portion. And an anchor bolt body formed with a second male screw portion with which the first screw thread is screwed.
A handle portion is provided between the male screw portion and the second male screw portion for rotating the anchor bolt main body in the forward and reverse directions. By operating the handle portion, the anchor bolt main body rotates in the normal and reverse directions, and the anchor bolt main body is rotated. Sinking of a building fixed by being sandwiched and fixed between an upper first nut and a lower second nut screwed into a second male screw portion of an anchor bolt by an anchor bolt which is expanded and contracted with respect to the outer cylinder. A method of correction, in which the second nut is rotated to lower it to the upper surface position of the handle portion, and then the handle portion is rotated to extend the anchor bolt body by a required correction height and jack up the foundation material. The upper surface of the base material is raised until the upper surface of the base material contacts the lower surface of the first nut, and the second nut is rotated to move the second nut upward to thereby lower the lower surface of the base material. Were supported, it is constituted to perform modifications without operating the first nut.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to specific examples shown in the accompanying drawings. FIG. 1 shows an embodiment of an anchor bolt according to the present invention. The anchor bolt 1 has a female screw 2a on an inner surface, an outer cylinder 2 having an open upper end, and a first male screw portion screwed to the female screw of the outer cylinder. 3a at the lower part, the second male screw portion 3 having a winding direction opposite to that of the male screw.
b at the top, and the first male screw portion and the second male screw portion
An anchor bolt body 3 having a hexagonal nut-shaped handle portion 4 between the male screw portion and a first nut 5 and a second nut 6 for fixing a foundation material such as a foundation of a building described later.
It has.

The female screw 2a of the outer cylinder 2 and the first male screw portion 3a of the anchor bolt main body 3 are subjected to a load of a building. Therefore, the female screw 2a is a trapezoidal screw, and the second male screw portion 3b is a metric screw so that the foundation material can be easily fixed. And

The handle portion 4 has a hexagonal nut shape so that it can be rotated by a general-purpose tool such as a wrench, but may have another shape that can be rotated by a dedicated tool.

Reference numeral 2b in FIG. 1 denotes a base plate of an outer cylinder. An iron plate having an appropriate area and thickness is used as the base plate in accordance with the load applied to the anchor bolt, but may not be provided.

An anchor bolt 1 constructed as described above
As shown in FIG. 2, the anchor is used by being embedded in the foundation 7 of the building, and the upper part of the anchor bolt body 3 is provided so as to protrude from the upper surface of the foundation together with the first nut. If there is a reinforcing bar inside, fix it to the reinforcing bar with a wire or the like.

The portion from the handle portion 4 to the second nut 6 of the anchor bolt 1 is provided between the handle portion and the second nut 6.
It is covered with a protective member 8 serving as a spacer for securing a working space for operating the nut, so that it is not hardened with concrete when the foundation 7 is poured into concrete.

The protective member is made of a material which can be easily removed at the time of subsidence correction described later, for example, styrene foam. At the time of subsidence correction, the protective member can be removed by dissolving with a solvent such as an organic solvent. However, a suitable protective member is selected and used in accordance with the structure of the building. Other examples of the protection member will be described later.

A support plate 9 is provided on the second nut 6 so as to cover the upper surface of the protection member. This support plate prevents a load of a building from being applied to the protection member and will be described later. When correcting settlement, it is used as a caul plate for raising the building. In addition, the code | symbol 10 in FIG. 2 shows the earth and sand around a foundation.

FIGS. 3 and 4 show the structure of the base part of a steel building using the anchor bolts constructed as described above. The anchor bolts 1 arranged in parallel in the foundation 7 are shown in FIGS.
A base material block 11, which is a foundation material of a steel building, is fixed to 1 and a pillar 12 and a connecting material 13,
13, a metal base 14 made of aluminum or the like is attached to the foundation by fasteners 15 and 15 such as screws inside the base material block, and a metal obiki 16 also made of aluminum or the like is provided inside the metal base. A floor plate 17 is provided on the joist and the base, and the joist 16 is supported by a steel bundle 19 disposed on concrete 18.

Reference numeral 20 in FIG. 4 denotes a reinforcing member made of a metal rod or a square bar, and this reinforcing member can be easily removed by hitting with a hammer or the like at the time of subsidence correction.

Next, an embodiment of the settlement correction method in the foundation structure of the steel building constructed as described above will be described with reference to specific examples shown in FIGS. First, the amount of settlement of each part of the building that needs to be corrected is checked in advance by surveying, and the amount of correction of each part that is necessary to correct the building horizontally is determined.

As shown in FIG. 5, the protection member 8 is exposed and removed by shaving the outside of the foundation at the place where the correction is required, and the handle portion 4 and the second nut 6 of the anchor bolt 1 are exposed to perform work. Secure space A. When the protective member is removed, if the protective member is styrene foam, the organic solvent is applied to the styrene foam as described above, and dissolved and removed.

Next, the second nut 6 is turned to lower it to a position immediately above the handle portion, and then the handle portion 4 is turned.
The anchor bolt main body 3 is extended by the necessary correction amount as shown in FIG. Since the extension amount of the anchor bolt is the distance D between the handle portion 4 and the upper end of the outer cylinder 2, the handle portion 4 is operated so that the distance D becomes equal to the correction amount. Further, as shown in FIG. 7, the stoppers 15, 15 for fixing the metal base 14 to the foundation 7 are removed, and the steel bundle 19 is replaced with a hydraulic jack 21.

A hole 10a for work is dug outside the foundation 7 to expose a horizontal base 7a of the foundation, and a correction jack 23 is installed on the horizontal base via a gantry 22. The pawl 24 is set on the lower surface of the support plate 9.

As shown in FIGS. 8 to 10, the correction jack 23 has an attachment 26 having the claw 24 attached to a jack body 25 made of a hydraulic jack. The attachment has the claw 24 formed thereon. A cylindrical cover portion 28 surrounding the side surface of the jack body 25 is provided on the lower surface of the top plate 27, and a vertical reinforcing material 26a is welded to the side surface of the cover portion on the claw side, so that the claw 24
And a cylindrical portion 2 surrounding the tip of the rod 25a of the jack body 25 is provided inside the cover portion on the lower surface of the top plate 27.
9 are provided.

The claws 24 are, for example, in the form of three comb teeth, and can be inserted between the left and right sides of the two anchor bolts 1, 1, respectively. The second nuts 6, 6 of the anchor bolts are inserted between them. In addition, the claw is formed to be tapered so that it can correspond to the second nut having various diameters.

Next, as shown in FIG. 11, the rod 25a of the correction jack 23 is extended to raise the foundation material block 11 together with the support plate 9 until the bottom plate upper surface of the block comes into contact with the lower surface of the first nut 5, and the hydraulic pressure is increased. Jack 2
1 also extends the rod 21a and raises the building itself through the obi 16 by a predetermined height, that is, by a necessary correction amount.

When the above-described extension of the anchor bolt body is performed, the necessary amount of correction is large, and when the anchor bolt body is extended, the upper end of the anchor bolt body becomes the base material block 11.
May contact the upper surface plate of the base material block 11 in such a case.
The jack-up is performed several times.

After jacking up all portions of the building requiring correction, the second nut 6 is turned and raised until it contacts the lower surface of the support plate 9 as shown in FIG. At this time, when the settlement of the building requires not only the correction of the height but also the correction of the inclination of the foundation, a wedge-shaped correction fitting is provided between the support plate 9 and the foundation material block 11. Or the support plate itself is replaced with one having a shape that is not flat but has an appropriate inclination.

When the second nut 6 is firmly tightened,
The correction jack 23 and the gantry 22 are removed and the work hole dug around the foundation 7 is backfilled, and the hydraulic jack 21 is also replaced with a steel bundle 19.

Thereafter, the area around the anchor bolt body 3 in the work space A is covered with a new protective member 8 up to the lower surface of the support plate 9 as shown in FIG. 13, and concrete is applied around the protective member 8 as shown in FIG. After the surface of the foundation 7 has been adjusted, and the concrete has hardened, the metal base 14 is fixed to the foundation with fasteners 15 and 15.

In the above-described basic structure of the steel building, the protective member 8 of the anchor bolt 1 is made of styrene foam, and when correcting settlement, the styrene foam is removed by dissolving it with an organic solvent or the like. Although a protective member is not provided, a portion from the upper opening of the outer cylinder of the anchor bolt 1 to the second nut 6 is formed with an appropriate space around this portion to retain a shape such as a lath board or a lath net. In some cases, the mortar is applied around the base material and the mortar is applied around the base material.

When the load applied to the foundation is large, there may be a case where styrene foam cannot provide sufficient load resistance. In some cases, up to 2 nuts 6 may be covered with a protective member such as an adhesive tape or cloth and the surroundings may be filled with concrete. Also, holes having sufficient rigidity to allow the anchor bolts 1 to be inserted vertically are provided. In some cases, an opened metal box is attached so as to cover from the upper opening of the outer cylinder of the anchor bolt to the second nut 6, and in this case, the metal box is divided and can be taken out from the outside of the foundation. And the space between the box and the foundation is filled with a caulking agent. Preferably, the metal box can be bolted to the foundation.

Although the above description of the foundation structure and settlement method is for a steel building, the anchor bolt and settlement method of the present invention can be suitably applied to a wooden building. An example of application to a building will be described in detail with reference to FIGS.

The anchor bolt used for the foundation of the wooden building is the same as that used for the above-mentioned steel structure, but in the following specific example, the second nut 6 of the anchor bolt 1 shown in FIG. Is not used.

FIG. 15 shows the foundation 30 of a wooden building.
1 shows a state in which an anchor bolt 1 of the present invention is provided.
A portion below the handle portion 4 is buried in the base 30 with the entire length of a stored in the outer cylinder 2, and a support plate 9 is provided on the handle portion 4.

A steel plate 31 is provided around the handle portion 4 as a protective member for securing a clearance for operating the handle portion around the handle portion. As shown in FIG. Four pieces 31a of shape,
It is divided into 31a, 31b and 31b, so that it can be pulled out from the outside of the foundation at the time of subsidence correction described later.

FIGS. 17 and 18 show the structure around the foundation of the wooden building having the basic structure constructed as described above. The anchor bolt 1 provided in the foundation 30 is attached to the base 32 which is the foundation material of the wooden building. Pass through the drilled hole and attach the base to the support plate 9
The upper surface side of the base is fixed to the anchor bolt with the first nut 5 via the washer 33 fitted to the anchor bolt body 3, and the column 34 is mounted on the base 32,
Obiki 35 is provided on the inside of the base, and this
6 and the joist 3 on Obiki 35
A floor plate 17 is provided via the base 7. Reference numeral 38 in the drawing indicates a breast.

Next, an embodiment of the settlement correction method in the foundation structure of the wooden building constructed as described above will be described with reference to FIG.
A description will be given based on specific examples shown in FIGS. First, survey the amount of settlement of each part of the building that needs correction in the same way as in the case of settlement correction to a steel frame building by surveying in advance, determine the amount of correction of each part necessary to correct the building horizontally deep.

As shown in FIG. 19, the steel plate 31 surrounding the handle portion of the anchor bolt at the portion requiring correction is removed, and the handle portion 4 of the anchor bolt 1 is exposed.
Next, the handle part 4 is turned to extend the anchor bolt body 3 by a necessary correction amount as shown in FIG. At this time, if the support plate 9 is supported by using the correction jack used in the settlement correction of the steel building described above, the operation of the handle portion 4 can be facilitated.

Also, with the rise of the base 32, the obiki 35
Also rises, and the obiki floats up from the bundle 36. If necessary, a hydraulic jack is set next to the bundle to support the obiki.

When it is necessary to correct the inclination of the foundation after correcting all the portions of the building that require correction, a wedge-shaped correction fitting is provided between the support plate 9 and the base 32. Or the support plate itself is replaced with one having a shape that is not flat but has an appropriate inclination.

Thereafter, as shown in FIG. 21, a spacer 39 is attached to a gap between the bundle 36 and the obiki 35, and
The first male screw portion 3a of the anchor bolt body 3 is covered with a protective member 40 such as an adhesive tape, and a portion below the lower surface of the handle portion 4 is filled with concrete 41. After the concrete is hardened, as shown in FIG. The steel plate 31 is set around the outer periphery of the base 4 and the exposed portion of the steel plate outside the foundation is covered with mortar to complete the repair work.

In the above-mentioned basic structure of the wooden building, the steel plate 31 is provided around the handle portion 4 of the anchor bolt 1.
Is set, the steel plate is removed at the time of subsidence correction, a work space B is secured, and the handle portion is operated in this work space. As shown in FIG. In the same way as in the case, a protective member 42 such as styrofoam is provided around the handle portion, and the foundation concrete surrounding the protective member is shaved at the time of subsidence correction,
In some cases, the protection member may be removed to provide a work space. In this case, the support plate 9 is tightened from below using the second nut 6 to fix the base as in the case of a steel building.

[0056]

Since the anchor bolt and settlement method according to the present invention are configured as described above, the following operations and effects can be obtained. Since the anchor bolt can be expanded and contracted by turning the handle,
It is not necessary to perform the work of adding anchor bolts, which is troublesome on site and may reduce the strength, as in the case of the settlement correction.

Further, the anchor bolt itself can be manufactured at a factory, and a product having a stable strength can be manufactured.

Therefore, the anchor bolt of the present invention has a stable strength which does not change before and after the settlement, and can perform the settlement without damaging the structural strength of the building.

Further, since the settlement of the building is corrected by rotating the handle portion located below the foundation of the building, there is no need to loosen or remove the first nut for fixing the upper part of the foundation. Therefore, it is not necessary to touch the first nut and the surrounding structure, that is, the structure above the foundation material at all, and the repair work can be performed without removing the building structure such as the floor material inside the foundation material.

Therefore, the settlement correction operation can be performed accurately and easily, the work period required for the correction can be significantly shortened as compared with the conventional settlement correction method, and the construction cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of an anchor bolt according to the present invention.

FIG. 2 is a longitudinal sectional front view showing a state where the anchor bolt according to the present invention is used for a foundation of a steel building.

FIG. 3 is a longitudinal sectional front view showing a structure around a foundation of a steel building provided with the anchor bolt according to the present invention.

FIG. 4 is a longitudinal sectional side view showing a structure around a foundation of a steel building provided with the anchor bolt according to the present invention.

FIG. 5 is a longitudinal sectional front view showing the steps of a settlement method of a steel building according to the present invention.

FIG. 6 is a vertical sectional front view showing steps of a settlement settlement method for a steel building according to the present invention.

FIG. 7 is a longitudinal sectional front view showing steps of a settlement settlement method for a steel building according to the present invention.

FIG. 8 is a vertical sectional front view of a correction jack used in the settlement correction method according to the present invention.

FIG. 9 is a plan view showing an example of an attachment of a correction jack.

FIG. 10 is a bottom view showing an example of the attachment of the correction jack.

FIG. 11 is a longitudinal sectional front view showing steps of a settlement settlement method for a steel building according to the present invention.

FIG. 12 is a longitudinal sectional front view showing steps of a settlement correction method for a steel building according to the present invention.

FIG. 13 is a longitudinal sectional front view showing the steps of the settlement method of the steel building according to the present invention.

FIG. 14 is a longitudinal sectional front view showing the steps of a settlement settlement method for a steel building according to the present invention.

FIG. 15 is a vertical sectional front view showing a state where the anchor bolt according to the present invention is used for a foundation of a wooden building.

FIG. 16 is a longitudinal sectional front view showing a structure around a foundation of a wooden building provided with the anchor bolt according to the present invention.

FIG. 17 is a longitudinal sectional side view showing a structure around a foundation of a wooden building provided with the anchor bolt according to the present invention.

FIG. 18 is a plan view of a steel plate spacer.

FIG. 19 is a longitudinal sectional front view showing the steps of the settlement method of the wooden building according to the present invention.

FIG. 20 is a vertical sectional front view showing the steps of the settlement method of the wooden building according to the present invention.

FIG. 21 is a vertical sectional front view showing steps of a settlement method of a wooden building according to the present invention.

FIG. 22 is a longitudinal sectional front view showing steps of a settlement method of a wooden building according to the present invention.

FIG. 23 is a longitudinal sectional front view showing another example of the foundation structure of the wooden building provided with the anchor bolt according to the present invention.

FIG. 24 is a partially cutaway perspective view showing an example of a basic structure of a conventional steel building.

FIG. 25 is a partially longitudinal side view showing an example of a basic structure of a conventional wooden building.

[Description of Signs] 1 Anchor bolt 2 Outer cylinder 3 Anchor bolt body 4 Handle part 5 First nut 6 Second nut 7 Foundation 8 Protective member 9 Support plate 10 Earth and sand 11 Foundation block 12 Pillar 13 Connecting material 14 Base 15 Stopper 16 Obiki 17 Floor plate 18 Concrete 19 Steel bundle 20 Reinforcement material 21 Hydraulic jack 22 Mount 23 Fixing jack 24 Claw 25 Jack body 26 Attachment 27 Top plate 28 Cover part 29 Tube part 30 Foundation 31 Steel plate spacer 32 Base 33 Washer 34 Pillar 35 Bundle 37 Joist 38 Breast 39 Spacer 40 Protective member 41 Concrete 42 Protective member

 ──────────────────────────────────────────────────続 き Continuation of the front page (71) Applicant 390037154 Daiwa House Industry Co., Ltd. 3-3-5 Umeda, Kita-ku, Osaka-shi, Osaka (72) Inventor Fujio Itagaki 583 Kaminakajima, Asahimura, Iwafune-gun, Niigata Inventor Atsushi Itagaki 583 Kaminakajima, Asahimura, Iwafune-gun, Niigata Prefecture AC23 AG12 BA02 BB08 BB19 BB24 BD01 BE05 BF04 CA05 EA06 EA15 2E176 AA09 CC05

Claims (3)

[Claims] 1. An outer cylinder having an internal thread formed on an inner surface thereof, an anchor having a first male threaded portion screwed to the female thread of the outer cylinder formed at a lower portion, and a second male threaded portion threaded with a nut formed at an upper portion. A bolt body, and a handle portion for rotating the anchor bolt body in the forward and reverse directions between the first male screw portion and the second male screw portion of the anchor bolt body, and by operating the handle portion An anchor bolt for a foundation of a building, wherein an anchor bolt main body rotates forward and backward, and the anchor bolt main body is made to expand and contract with respect to the outer cylinder. 2. An anchor having an outer cylinder having an internal thread formed on an inner surface thereof, a first external thread portion screwed to the internal thread of the outer cylinder formed at a lower portion, and a second external thread portion formed with an nut at an upper portion thereof. A bolt body, and a handle portion for rotating the anchor bolt body in the forward and reverse directions between the first male screw portion and the second male screw portion of the anchor bolt body, and operating the handle portion A building in which a foundation material is fixed between a foundation and a nut screwed into the second male screw portion of the anchor bolt by an anchor bolt in which the anchor bolt body is rotated forward and backward and the anchor bolt body is extended and contracted with respect to the outer cylinder. The anchor bolt body is extended upward by rotating the handle portion of the anchor bolt, and the foundation material is raised to a required correction height. Settlement Fix buildings make modifications without operating the nut screwed into the second male screw portion. 3. An anchor having an outer cylinder having an internal thread formed on an inner surface thereof, a first male thread portion screwed to the internal thread of the outer cylinder formed at a lower portion, and a second male thread portion screwed with a nut at an upper portion. A bolt body, and a handle portion for rotating the anchor bolt body in the forward and reverse directions between the first male screw portion and the second male screw portion of the anchor bolt body, and by operating the handle portion The anchor bolt main body is rotated forward and backward, and the anchor bolt is expanded and contracted with respect to the outer cylinder. A method for correcting settlement of a building fixed between two nuts, wherein the second nut is turned to lower the handle to an upper surface position, and then the handle is turned. The anchor nut body is extended by a required correction height, the foundation material is jacked up, the upper surface of the foundation material is raised until it contacts the lower surface of the first nut, and the second nut is turned by rotating the second nut. A method of correcting settlement of a building, in which a lower surface of a foundation material is supported by being moved upward to perform correction without operating the first nut.