JP2005016073A - Plumbing correction fixture and plumbing correction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plumbing correction fixture of a steel framed column capable of carrying out work even in a narrow site by eliminating high place work and a plumbing correction method. <P>SOLUTION: The plumbing correction fixture of the steel framed column is equipped with an anchor 20 set on a foundation 1 in a vertically movable manner and an anchor holding device 33 holding the anchor 20 mounted on the circumferential edge of a base plate 5 of the steel framed column 4 built on the foundation 1. The base plate 5 is vertically moved in a state to hold the anchor 20 set on the foundation 1 by the anchor holding device 33 mounted on the circumferential edge of the base plate 5 of the steel framed column 4 in a vertically movable manner, and the verticality of the steel framed column 4 built on the foundation 1 can be adjusted. Three or more anchor holding devices 30 are mounted on the circumferential edge of the base plate 5 to enable the decenter of the steel framed column 4 to prevent by the plumbing correction method. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steel column re-installation jig and a re-installation method.
[0002]
[Prior art]
As a rebuilding method to ensure the accuracy of the verticality of the steel column in steel structures and steel reinforced concrete structures, attach the wire to the upper end of the steel column and tension the wire with a lever block etc. There was a way to pay.
[0003]
In addition, there has been a method of lifting and adjusting the base plate of the steel column using a jig that is adjusted by bolting (for example, see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-73568 (FIG. 3)
[0005]
[Problems to be solved by the invention]
However, in order to adjust the vertical degree of the steel column with the wire, the wire is attached to the upper end of the steel column, which requires work at a high place. In addition, when the wire is stretched, the wire becomes an obstacle to floor construction. Moreover, a temporary member for wire attachment is required on the column upper end and the floor.
[0006]
Further, in the method of lifting the steel column base plate with a jig that is adjusted by bolting, the height cannot be adjusted by lowering the base plate. In addition, it is difficult to use a spanner that tightens a bolt when there is a narrow underground part or column. Further, in the method in which only one side of the steel column is pushed, there is a possibility that the center displacement of the steel column occurs.
[0007]
An object of the present invention is to provide a steel column re-installation jig and a re-installation method that can eliminate work at high places and can be operated even in a narrow place.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to claim 1 of the present invention is a steel column re-installation jig, for example, an anchor (jig) provided on a foundation 1 as shown in FIG. An anchor 20) and an anchor gripping tool 33 that grips the anchor 20 and is provided on the periphery of the base plate 5 of the steel column 4 built on the foundation 1 so as to freely move up and down.
[0009]
According to the first aspect of the present invention, the base plate 5 is held in a state where the anchor 20 provided on the foundation 1 is gripped by the anchor gripping tool 33 provided on the periphery of the base plate 5 of the steel column 4 so as to be movable up and down. By moving up and down, the verticality of the steel column 4 built on the foundation 1 can be adjusted.
[0010]
The invention according to claim 2 is the steel column repositioning jig according to claim 1, wherein the frame 31 provided on the base plate 5 and the upper part (upper screw part 32a) are perpendicular to the upper part of the frame 31. A jack 32 that penetrates and is screwed, an anchor grip jig 33 in which a lower portion (lower screw portion 32b) having a different pitch width from the upper portion 32a of the jack 32 is screwed, and the anchor grip jig 33 holds the grip. It is characterized by comprising the anchor 20 which is made.
[0011]
According to the second aspect of the present invention, the jack 32 is screwed into the frame 31 and the anchor handle jig 33 with different pitch widths, so that the jack 32 is rotated with a smaller force to fix the anchor handle jig 33. The base plate 5 can be moved up and down with respect to the jig anchor bolt 20.
[0012]
According to a third aspect of the present invention, in the steel column repositioning jig according to the first aspect, the frame 31 provided on the base plate 5, the hydraulic jack 34 provided on the frame 31, and the hydraulic jack 34 The anchor grip jig 33 provided at the lower end and the anchor 20 gripped by the anchor grip jig 33 are characterized in that
[0013]
According to the invention described in claim 3, the anchor grip jig 33 provided at the lower portion of the jack 32 can be moved up and down with respect to the base plate 5 by the hydraulic jack 34.
[0014]
The invention according to claim 4 is a method of rebuilding a steel column, wherein the anchor 20 is provided on the foundation 1 and the anchor gripping tool 33 is vertically moved around the base plate 5 of the steel column 4 to be built on the foundation 1. Three or more are provided so as to be movable, and the anchor gripping tool 33 is moved up and down with respect to the base plate 5 while the anchor 20 is gripped.
[0015]
According to the invention described in claim 4, the verticality of the steel column 4 can be adjusted by moving the anchor gripping tool 30 up and down relative to the base plate 5. Further, by providing three or more anchor gripping tools 30 on the periphery of the base plate 5, misalignment of the steel column 4 due to re-installation can be prevented.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1A is an elevation view showing a base portion of a steel column to which the present invention is applied. In FIG. 1A, an anchor frame 2 is assembled on a foundation 1. Column anchor bolts 3 and jig anchor bolts 20 constituting the jig 10 are provided on the upper surface of the anchor frame 2 so as to protrude upward. A base plate 5 of a steel column 4 is fixed to the column anchor bolt 3 with a bolt.
[0017]
FIG. 1B is a plan view showing the base plate 5 of the steel column 4. At the four corners of the base plate 5, holes (not shown) through which the jig anchor bolts are pierced are provided, and the anchor support portions 30 for supporting the jig anchor bolts 20 penetrating the holes are provided thereon. In addition, a hole for penetrating the column anchor bolt is provided at the corner of the column portion. In the figure, the steel frame 4 is a square steel pipe, but a steel frame having an arbitrary shape such as an H-shaped steel or an I-shaped steel can be used.
[0018]
FIG. 2 is a view showing an anchor support portion 30 that constitutes the jig 10 together with the jig anchor 20. The anchor support portion 30 is provided on the base plate 5 and includes a frame 31, a jack 32, and an anchor gripping tool 33.
The frame 31 is fixed to the base plate 5 with bolts. A jack 32 is vertically passed through and screwed into the upper portion of the frame 31.
[0019]
The jack 32 includes an upper screw portion 32 a that is screwed with the frame 31, and a lower screw portion 32 b that is screwed with the anchor handle jig 33. The upper screw portion 32a and the lower screw portion 32b have different screw pitch widths. For example, the upper screw portion 32a has a pitch width of 3 mm and the lower screw portion 32b has a pitch width of 2 mm. 32a preferably has a larger pitch width.
A lower threaded portion 32b of the jack 32 is screwed into the anchor gripping tool 33, and grips the head of the jig anchor bolt 20. Since the lower screw portion 32b has a smaller pitch width than the upper screw portion 32a, the displacement in which the anchor grip jig 33 moves up and down relative to the frame is smaller than the displacement in which the jack 32 moves up and down relative to the frame 31. . For this reason, the base plate 5 can be moved with respect to the jig anchor bolt 20 with a smaller force.
[0020]
Next, the rebuilding of the steel column in the present embodiment will be described. First, the anchor frame 2 is assembled on the foundation 1 in the same manner as in the prior art, and the steel frame is assembled thereon. Then, the base plate 5 of the steel column 4 constituting the steel frame is temporarily fixed to the column anchor bolt 3 and the head of the jig anchor bolt 20 is held by the anchor support portions 30 provided at the four corners of the base plate 5.
[0021]
The jack 32 is fixed to the jig anchor bolt 20 by an anchor gripping tool 33. Therefore, when the jack 32 is rotated left and right, the frame 31 moves up and down with respect to the jack 32, so that the base plate 5 can be moved up and down as shown in FIGS. By adjusting the height balance of the four anchor grippers 33, the verticality of the steel column 4 can be finely adjusted.
[0022]
According to the present embodiment, work at a high place such as attachment of a wire is not necessary, and the danger of workers can be reduced. In addition, since the work is performed below the steel column, it can be rebuilt even when there is a column such as a narrow underground part or a steel reinforced concrete structure.
[0023]
In the drawing, the anchor support portions 30 are provided at the four corners of the base plate 5, but the number thereof is arbitrary as long as it is three or more. For example, when a steel pipe having a circular cross section is used as the steel frame 4, a plurality of jigs 10 may be provided so as to surround the column portion.
[0024]
FIG. 3 is a view showing an example in which a hydraulic jack 34 is used instead of the jack 32 of the anchor support portion 30 as a second embodiment of the present invention. When the lever 35 of the hydraulic jack 34 provided on the frame 31 is raised or lowered, the anchor gripping tool 33 moves up and down. Thereby, the inclination of the steel column 4 can be finely adjusted by moving the base plate 5 up and down similarly to the first embodiment.
[0025]
In the embodiment described above, the case where the steel column 4 is built on the anchor frame 2 on the foundation 1 has been described. Can also be assembled.
[0026]
Further, the jig anchor bolt 20 may be used also as the column anchor bolt 3. In that case, the jig | tool anchor bolt 20 and the anchor support part 30 fix the steel column 4 without removing.
In addition, it is needless to say that specific details such as the cross-sectional shape of the steel column 4 can be appropriately changed.
[0027]
【The invention's effect】
As described above, according to the first aspect of the present invention, the anchor provided on the foundation is gripped by the anchor gripper provided on the periphery of the base plate of the steel column so as to be movable up and down. The base plate can be moved up and down to adjust the verticality of the steel column built on the foundation.
[0028]
According to the second aspect of the present invention, the same effect as that of the first aspect of the present invention can be obtained, and the jack can be screwed into the frame and the anchor grip jig with different pitch widths. The jack can be rotated by force to move the anchor grip jig, and the base plate can be moved up and down relative to the jig anchor bolt.
[0029]
According to the invention described in claim 3, the same effect as that of the invention described in claim 1 can be obtained, and the anchor grip jig provided at the lower part of the jack is moved up and down with respect to the base plate by the hydraulic jack. be able to.
[0030]
According to the fourth aspect of the present invention, the verticality of the steel column can be adjusted by moving the anchor gripping tool up and down with respect to the base plate. Further, by providing three or more anchor grippers on the periphery of the base plate, it is possible to prevent misalignment of the steel column due to rebuilding.
[Brief description of the drawings]
1A is an elevation view showing a base portion of a steel column to which the present invention is applied, and FIG. 1B is a plan view showing a base plate 5;
FIGS. 2A and 2B are cross-sectional views showing the operation of the anchor handle jig, wherein FIG. 2A shows a state in which the anchor handle jig is raised to the uppermost end of the frame, FIG. 2C shows a state lowered to the lowermost end of the frame; ) Indicates an intermediate state.
FIGS. 3A and 3B are views showing an anchor support portion using a hydraulic jack instead of a jack, wherein FIG. 3A is a cross-sectional view seen from a plane perpendicular to the frame, and FIG. 3B is a cross-sectional view seen from a plane parallel to the frame; FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Foundation 2 Anchor frame 3 Column anchor bolt 4 Steel column 5 Base plate 10 Jig 20 Jig anchor bolt 30 Anchor support part 31 Frame 32 Jack 32a Upper screw part 32b Lower screw part 33 Anchor holding tool 34 Hydraulic jack 35 Lever

Claims (4)

A steel column re-installation jig comprising: an anchor provided on a foundation; and an anchor gripping tool provided on the periphery of a base plate of a steel column built on the foundation so as to be movable up and down. . A frame provided on a base plate; a jack having an upper portion vertically passing through and screwed into the upper portion of the frame; and an anchor grip jig in which a lower portion having a pitch width different from that of the upper portion of the jack is screwed, and the anchor The steel column re-installation jig according to claim 1, comprising the anchor held by a grip jig. It comprises a frame provided on a base plate, a hydraulic jack provided on the frame, the anchor grip jig provided at a lower end of the hydraulic jack, and the anchor gripped by the anchor grip jig. The steel column re-installation jig according to claim 1. While providing an anchor on the foundation,
Three or more anchor grips are provided on the periphery of the base plate of the steel column to be built on the foundation so that it can move up and down.
A method for rebuilding a steel column, wherein the anchor gripping tool is moved up and down relative to a base plate in a state where the anchor is gripped.

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