JP3483522B2 - Position adjustment device for steel columns - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position adjusting device for a steel frame column which is built on foundation concrete and temporarily fixed.

[0002]

2. Description of the Related Art Steel columns that form part of a building to be built are
Through a base plate attached to its bottom, it is hung and placed on a Tetsudango provided on the foundation concrete. At this time, a plurality of anchor bolts extending from the basic concrete are passed through a plurality of bolt holes provided in the base plate, and nuts are screwed into the anchor bolts. As a result, the steel column is temporarily fixed to the basic concrete.

By the way, in order to dispose the steel frame column at a predetermined position on the foundation concrete, a steel wedge member is inserted into the bolt hole of the base plate through which the anchor bolt is passed during the suspension of the steel frame column. . As a result, swing of the steel column with respect to the anchor bolt, that is, swing of the bolt hole of the base plate is suppressed, and the steel column is arranged at a predetermined position.

However, according to this, the thread of the anchor bolt may be damaged by the wedge member that hits it, which makes it difficult to screw the nut into the anchor bolt thereafter. There was a problem of becoming.

Further, with the wedge member, it is difficult to finely adjust the position of the steel column.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for adjusting the position of a steel column mounted via a base plate on a Ted's dango provided on a foundation concrete.

[0007]

According to the present invention, there are provided a plurality of anchor bolts mounted on a tetsudango provided on a foundation concrete and extending upward from the foundation concrete, and a plurality of nuts screwed to the anchor bolts. A position adjusting device for a steel column having a base plate temporarily fixed to the basic concrete, the hook member being hookable to the anchor bolt, a female screw member attached to the hook member, and the female screw. The male screw member is screwed to the member, and the male screw member can press the peripheral surface of the base plate using the anchor bolt on which the hook member is hooked as a reaction force support.

Further, a plurality of second male screw members screwed into the screw holes provided in the hook member and including a second male screw member for adjusting the height position of the female screw member. You can

[0009]

According to the present invention, the position adjusting device is arranged between the base concrete and the base plate of the steel column which is placed on the dango of the base concrete and is temporarily fixed to it. The position of the steel column can be adjusted by operating. That is,
The hook member of the position adjusting device is hooked on the anchor bolt, and the male screw member screwed to the female screw member attached to the hook member is rotated and pressed against the peripheral surface of the base plate, thereby the anchor bolt. Can be used as a reaction force support body to move the steel column in the horizontal direction through the base plate and adjust its position.

Further, since the horizontal movement of the steel column is caused by the movement of the male screw member with respect to the female screw member,
A relatively accurate position adjustment can be performed.

The position adjusting device is preferably arranged so as to face each other on each of two straight lines perpendicular to each other on the foundation concrete, whereby the steel column after position adjustment is maintained immovable. Therefore, it is possible to prevent the steel column from moving during the subsequent beam insertion.

The female screw member can adjust the height position with respect to the basic concrete by rotating the second male screw member screwed into the screw hole of the hook member, whereby the female screw member can be adjusted in height. The screwed male screw member can be easily positioned so as to face the peripheral surface of the base plate.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIGS. 1 and 2, a steel column 10 forming a part of a building to be constructed is built on a foundation concrete 12 with an approximately vertical degree, and a foundation plate 14 is used to form a foundation. Temporarily fixed to concrete 12.

The position adjusting device 15 according to the present invention is used to adjust the position of the temporarily fixed steel column 10 in the horizontal direction.

The steel column 10 has a rectangular cross section.

The steel column 10 has a base plate 14 attached to its bottom. The base plate 14 has a rectangular peripheral edge, surrounds the bottom of the steel frame column 10 and is orthogonal to the axis of the steel frame column.

The steel column 10 and the base plate 14 are
Besides the example shown, it may have another cross-sectional shape, for example a circular cross-sectional shape.

The basic concrete 12 is made of concrete, mortar or steel Tetsudango (not shown).
And a plurality of (8 in the illustrated example) anchor bolts 16 for fixing the steel column 10 to the foundation concrete 12 are partially embedded.

The anchor bolts 16 are arranged on the four sides of the rectangle at intervals from each other, and the Tetsudango is provisionally arranged substantially at the center of the rectangle. The plurality of anchor bolts 16 and the Tetsudango respectively project upward from the flat surface of the basic concrete 12.

The base plate 14 is placed on the Tetsudango. Therefore, there is a gap between the base plate 14 and the foundation concrete 12.

The base plate 14 is provided with eight bolt holes 18 corresponding to the anchor bolts 16 at the four corners of the rectangle and at the positions between the two corners.

The anchor bolt 16 is the base plate 1
It extends upward through the bolt hole 18 of No. 4.

The base plate 14 is fixed on the foundation concrete 12 by a plurality of nuts 20 screwed to the anchor bolts 16, respectively. Thereby, the steel frame pillar 10 is temporarily fixed to the foundation concrete 12 via the base plate 14. Reference numeral 22 indicates a washer having a drop-shaped planar shape, which is arranged between the base plate 14 and the nut 20.

The steel column 10 is temporarily fixed, for example, while the steel column 10 is suspended by a crane.

The position adjusting device 15 for the steel column 10 is
Hook member 24 that can be hooked on the anchor bolt 16
And a female screw member 26 attached to the hook member 24.
And a male screw member 28 screwed to the female screw member 26.

The hook member 24 has a flat shape as a whole, and has a curved tip portion 30 which is a portion hooked to the anchor bolt 16 and a base portion 32 which spreads from the tip portion 30 toward the end.

The hook member 24 is used for the foundation concrete 12
The thickness dimension is selected so that it can be inserted into the gap existing between the base plate 14 and the base plate 14. Therefore, the hook member 24 can be inserted into the gap and the tip portion 30 thereof can be hooked on the anchor bolt 16. The length dimension of the hook member 24 is selected such that when the tip portion 30 is hooked on the anchor bolt 16, the base portion 32 is located outside the gap.

The female screw member 26 is the base 3 of the hook member 24.
It is attached to 2. The female screw member 26 is outside the gap when the hook member 24 is hooked on the anchor bolt 16, and its axis is the base plate 1.
4 is arranged on the base 32 of the hook member so as to be orthogonal to the peripheral surface 34 of the No. 4 and orthogonal to the axis of the anchor bolt 16.

Therefore, the male screw member 28 screwed to the female screw member 26 can be rotated to advance the axial line of the female screw member 26 toward the peripheral surface 34 of the base plate. Further, by further advancing the male screw member 28, the anchor bolt 16 on which the hook member 24 is hooked.
To the reaction surface, that is, by using the anchor member as a reaction force supporter, from the male screw member 28 to the peripheral surface 3 of the base plate.
4, a pressing force can be exerted.

As a result, the base plate 14 on the Tetsudango, that is, the steel frame column 10 moves horizontally. The maximum moving distance at this time is the bolt hole 1 of the base plate.
8 and the diameter of the anchor bolt 16 that penetrates the hole.

The adjusting device 15 is arranged on the foundation concrete 12. Preferably, as in the illustrated example, the steel column 10
Two are placed on each of two horizontal lines that intersect the axis line (more accurately, the vertical line where the axis of the steel column should be located).

According to this, the two adjusting devices 15 on each straight line can be operated to position the steel column 10 at a predetermined position where it should be installed. That is, by advancing the male screw member 28 of one device and retracting the male screw member 28 of the other device to move the steel column 10, the position of the steel column 10 on each straight line is changed, and the axis line of the steel column is changed. It is possible to pass through the intersection of both straight lines.

Further, according to the device 15 of the present invention, since the male screw member 28 is advanced with respect to the female screw member 26, the position of the steel column 10 can be finely adjusted, and
It is easy to maintain.

The male screw member 28 preferably has a hexagonal head portion 36 and an end surface 38 which is a part of a spherical surface. The hexagonal head 36 is suitable for a tool for turning the male screw member 28 such as a wrench, and the spherical end surface 38 is a point contact with the peripheral surface 34 of the base plate. , And contributes to the reduction of the frictional force generated between the end surface 38 and the peripheral surface 34 of the base plate and the accompanying reduction of the rotational force to be exerted on the male screw member 28.

When the adjusting device 15 is installed, the adjusting device 15 has one or a plurality of plate-like members, for example, below the hook member 24 so that the male screw member 28 is at a height position facing the peripheral surface 34 of the base plate 14. A spacer (not shown) is placed, or the two second male screw members 40 attached to the hook member 24 are rotated as in the illustrated example.

The second both male screw members 40 are screwed into a pair of screw holes 42 provided in the base 32 of the hook member. In the illustrated example, both screw holes 42 are arranged on both sides of the female screw member 26.

By rotating the second male screw member 40,
The amount of protrusion of the second male screw member 40 from the hook member 24 is changed to change the basic concrete 12 and the base portion 32 of the hook member.
The distance to (and therefore to the internally threaded member 26 attached thereto) can be varied, which allows the height position of the internally threaded member 26 and the male threaded member 28 screwed thereto to be determined. Two second male screw members 40
Hook member 24 supported on the concrete foundation 12 by
Are kept parallel to the base plate 14 when the male screw member 28 is pressed against the base plate 14.

The number of the second male screw members 40 may be 3 or more.

After the horizontal positioning of the steel column 10 by the adjusting device 15, a steel beam (not shown) is provided between the steel column 10 and another steel column (not shown) similarly positioned. Is placed and connected to both steel columns (beaming).

Usually, since the steel frame column 10 and the base plate 14 temporarily fixed on the foundation concrete 12 via the base plate 14 have a slight inclination, the inclination is corrected or corrected prior to the beam insertion.

This inclination correction (rebuilding) is performed by the steel column 1
This can be done by fixing a plurality of ropes to the top of 0 and pulling these ropes on the ground, or by using the inclination correcting device 44 shown.

When the steel frame pillar 10 is rebuilt, the steel frame pillar 10 is rotated with the contact point between the tetsudango 20 and the base plate 14 as a fulcrum, and the axis of the steel frame pillar 10 in a tilted state is made vertical, or the base plate 14 is removed. It is done by making it horizontal.

The steel column 10 using the inclination correcting device 44
Is rotated by lifting the edge of the base plate 14. For this reason, the tilting device 44 is arranged at a substantially central position of each edge of the base plate 14.

The inclination correcting device 44 is used for the foundation concrete 1
2 has a rectangular frame 46 and a frame 4
6 includes a bolt 48 which is rotatably supported on the shaft 6 and extends vertically, and a nut 50 which is held in the frame 46 and screwed to the bolt 48.

The frame 46 includes a top plate 52 and a bottom plate 54 facing each other in the vertical direction, and a pair of side plates 56 fixed to the top plate 52 and the bottom plate 54 and facing each other.
It consists of a pair of back plates 58 arranged in one of the rectangular openings defined by these plates 52, 54, 56, 56.

The bolt 48 has its shaft portion penetrating through a hole 57 provided in the top plate 52 of the frame and extending toward the bottom plate 54, and the tip of the spherical surface is in contact with the bottom plate 54. The nut 50 has a block shape as a whole, and most of the nut 50 is between the side plates 56 of the frame and the rest is between the back plates 58.
Slidably touches. From this, when the bolt 48 is rotated about its axis, the nut 50 will
Without rotating with 8, the side plates 56 and the back plates 58 of the frame are used as guides along the frame 4 and
Move up and down in 6.

The nut 50 has a protrusion 60 that protrudes to the side opposite to the back plate 58. The protrusion 60 receives the edge of the base plate 14 on it.

Base plate 1 by tilt correction device 44
4 re-installation is performed by the bolt 48 of one of the pair of devices 44 on both edges of the base plate 14 facing each other.
Rotate and raise the nut 50 to perform. At this time,
The nut 20 screwed to each anchor bolt 16 is loosened, and the nut 50 of the other device 44 is lowered.

As the nut 50 rises, its protrusion 60
The edge of the base plate 14 is lifted via the. Since the edge of the base plate 14 is restrained between the protrusion 60 of the nut 50 and the top plate 52 of the frame,
The steel column 10 is prevented from falling.

At this time, for example, the verticality of the steel column 10 is measured using a vertical device. Since the ascending distance of the nut 50 can be precisely controlled by rotating the bolt 48, the vertical accuracy of the steel column 10 can be increased. After that, the bolt 48 of the other device 44 is rotated to raise the nut 50, and the protruding portion 60 of the nut 50 is raised.
Abut.

The same operation is performed for the device 44 installed on the remaining both edges of the base plate 14, and then the nuts 2 screwed to the anchor bolts 16 are engaged.
By re-tightening 0, the rebuilding of the pillar 10 is completed.

After the rebuilding of the steel column 10 is completed, the position adjusting device 15 and the inclination correcting device 44 are removed.

[Brief description of drawings]

FIG. 1 is a plan view of a position adjusting device arranged around a steel column and a base plate.

2 is a sectional view of the position adjusting device taken along line 2-2 of FIG. 1. FIG.

FIG. 3 is a side view of the position adjusting device.

4 is a cross-sectional view of the tilt correction device taken along line 4-4 of FIG.

FIG. 5 is a side view of the inclination straightening device.

[Explanation of symbols]

10 Steel Column 12 Foundation Concrete 14 Base Plate 15 Position Adjusting Device 16, 20 Anchor Bolt and Nuts 24, 26, 28 Screwed to This Anchoring Hook Member, Female Thread Member and Male Thread Member 40 Second Male Thread Member

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04B 1/24 E04G 21/18 E04B 1/58 511

Claims (2)

(57) [Claims] 1. Temporarily fixed to the basic concrete through a plurality of anchor bolts mounted on a tetsudango provided on the basic concrete and extending upward from the basic concrete, and a plurality of nuts screwed to the anchor bolts. A position adjusting device for a steel column having a base plate, the hook member being hookable to the anchor bolt, a female screw member attached to the hook member, and a male screw member screwed to the female screw member. The position adjusting device including: and the male screw member capable of pressing the peripheral surface of the base plate using the anchor bolt on which the hook member is hooked as a reaction force support. 2. A plurality of second male screw members screwed into screw holes provided in the hook member, the second male screw members for adjusting the height position of the female screw member. The position adjusting device according to claim 1.