JP4034778B2 - Steel column re-installation jig - Google Patents

Description

This invention relates to a jig cycle steel column construction, in particular, can be easily put lead straight of steel column, to steel columns denominated cycle jig used in construction put work.

A conventional steel column repositioning jig is described in, for example, Japanese Patent No. 3499754. According to the publication, the re-installation jig includes a frame having an upper part and a lower part, a bolt that passes through the upper part of the frame and extends to the lower part of the frame, and is arranged between the upper part and the lower part of the frame and is screwed onto the bolt. And a nut that is movable only in the axial direction of the bolt, and the edge of the steel column base plate can be disposed above the nut.
Japanese Patent No. 3499754 (paragraph number 0007, FIG. 2 etc.)

  The rebuilding jig used for the conventional erection work has been configured as described above. In order to hold the steel column base plate with the nut, when the push-up bolt is tightened, a rotational moment due to friction with the female screw is applied to the jig itself, and this moment causes the jig itself to rotate and move, and tighten the bolt. There was a problem that it was difficult.

  This invention is made | formed in view of the above subjects, and it aims at providing the steel column rebuilding jig which can adjust a steel column baseplate easily with a simple structure.

  The steel column rebuilding jig according to the present invention is provided by being connected to a push-up bolt extending in the vertical direction, a first female screw portion engageable with the push-up bolt, and the first female screw portion. A support portion for supporting the column base plate, the support portion supporting the steel column base plate on its upper surface, and when the steel column base plate is supported on the upper surface of the support member, In order to press from above, a support bolt that is movable in the vertical direction on the steel column base plate, and a second female screw portion that is provided so as to be able to engage with the support bolt opposite to the support member are included.

  The first female screw portion having a support portion for supporting the steel column base plate is engageable with a push-up bolt extending in the vertical direction. After fixing the steel column base plate with the support member and the support bolt, the first female screw portion is engaged. Since the threaded portion can be moved in the vertical direction with a push-up bolt, the steel column base plate can be easily moved in the vertical direction. As a result, it is possible to provide a steel column re-installation jig having a simple structure and capable of easily adjusting the steel column base plate.

  Preferably, the support member and the second female screw portion are integrated by a longitudinal member extending in the vertical direction.

In another aspect of the present invention, using a cycling upper noted were steel columns denominated jig performs denominated insertion operation of fixing the anchor bolt.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view (FIG. 1 (A)) showing a configuration of a steel column re-installation jig 10 according to an embodiment of the present invention, and a plan view of a portion indicated by BB in FIG. 1 (A). There is (the illustration of the steel column base plate in FIG. 1B is omitted).

  Referring to FIG. 1, a steel column rebuilding jig 10 includes a push-up bolt 11 extending in the vertical direction, a first female screw portion 12 engageable with the push-up bolt 11, and a first female screw portion 12. And a connected support portion 13. The support portion 13 is provided with a longitudinal member 13b extending in the length direction of the first female screw portion 12, a lower portion of the longitudinal member 13b, a support member 13a that receives the steel column base plate 17 on the upper surface, and an upper portion of the longitudinal member 13b. And a second female screw portion 14 provided on the front side. A support bolt 15 extending in the vertical direction is engaged with the second female screw portion 14, and the steel bolt base plate 17 is held between the lower end of the support bolt 15 and the support member 13 a by tightening the support bolt 15. .

The lower end portion of the first female screw portion 12 is provided at a position higher than the lower end portion of the support member 13a, whereby the lower surface of the support member 13a and the concrete are provided as shown in FIG. Even when the gap between the upper surfaces 27 is narrow, the liner plate 26 can be easily attached. Incidentally, the lower end surface of the first female screw portion 12 may be provided at any position above the lower end surface of the support member 13a.

  As shown in FIG. 1B, the support member 13a has a sufficient width to hold a part of the steel column base plate.

  Note that a general nut may be used as the second female screw portion 14.

Next, a procedure for performing steel frame rebuilding using the steel column rebuilding jig 10 will be described. FIG. 2 is a diagram showing a state in which the steel frame rebuilding work is performed using the steel column rebuilding jig 10. Referring to FIG. 2 (B) , the top of the manju 20 serving as a basic reference is raised from the concrete upper surface 27 so that the top of the manju 20 becomes a predetermined GL level (indicated by GL in FIG. 2 (B)). 20 is formed to a predetermined height. Specifically, the height of the top of the manju 20 is obtained by cutting the tip of the reinforcing bar 21 embedded in the manju 20 in the vertical direction. The manju 20 may be composed of mortar, iron manju, or level mortar.

  In this state, the steel column base plate 17 with the steel column 25 is placed on the Manju 20 and the column is built. Next, the steel column base plate 17 is sandwiched between the support member 13 a and the support bolt 15, and the steel column rebuilding jig 10 is fixed to each of the four sides of the steel column base plate 17. At this time, one side (indicated by 13c in FIG. 1 (B)) of the steel column rebuilding jig 10 is aligned with the center sumi 28 (see FIG. 2 (A)), which has been inked in advance, and four steel columns. All the re-installation jigs 10 are arranged so as to be positioned in one direction of the center ink 28 (counterclockwise in FIG. 2A).

  In FIG. 2A, the bolt shape of the steel column re-installation jig 10 is omitted.

  As described above, since one side of the steel column rebuilding jig 10 is aligned with the center ink 28, it is possible to proceed with the ink alignment and rebuilding as simultaneous operations.

  Since the thickness of the steel column base plate may become thinner in the end direction, it is preferable to use a bolt with a recessed tip as the support bolt 15.

  Next, the liner plate 26 is placed between the concrete upper surface 27 and the push-up bolt 11.

  The cores are aligned, and the verticality of the column is adjusted by the steel column re-installation jig 10 and the anchor nut 19. Confirm the building with transit, loosen the anchor bolt on the tightening side, and temporarily tighten the anchor nut on the opposite side when it reaches the predetermined position (for example, in FIG. 2 (A), the steel column rebuilding jig 10a When the push-up bolt 11 is turned clockwise, the anchor nuts 19b and 19c are loosened and the anchor nuts 19a and 19d are tightened).

  Note that, when the push-up bolt 11 of the steel column erection jig 10 is tightened, the steel column base plate 17 rises.

  In this way, the building is confirmed, the four steel column re-installing jigs 10a to 10d are adjusted by applying a load, the temporary fastening of the four anchor nuts 19a to 19d is confirmed, and the crane stake is released. To do. In this way, the four pillars are erected, the beams connecting the respective pillars are attached, the exact erection is completed by transit, and the anchor nuts 19a to 19d are tightened.

As described above, by using the steel column rebuilding jig 10 according to this embodiment, the anchor nut 19 can be easily tightened, and the time for installing the steel column can be reduced.

  Further, since the work can be performed without using a wire as in the prior art, an aerial work vehicle and other vehicles can easily move at the work site, and the overall process can be shortened.

  In the above-described embodiment, the example in which the height of the steel column base plate is adjusted by the push-up bolt has been described. However, the present invention is not limited to this, and a hydraulic jack may be used instead of the push-up bolt.

  In addition, a vertical direction automatic confirmation device that automatically confirms the vertical direction of the steel column and a hydraulic jack may be interlocked to automatically control the rebuilding.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

The steel column rebuilding jig 10 according to the present invention has a simple structure and can easily move the steel column base plate in the vertical direction, and is therefore advantageously used as a steel column rebuilding jig.

It is a figure which shows the structure of the steel-column re-installation jig | tool which concerns on one embodiment of this invention. It is a figure for demonstrating the attachment state of an anchor bolt using the steel-frame pillar-reinstalling jig which concerns on one embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Steel column rebuilding jig, 11 Push-up bolt, 12 1st female thread part, 13 Support part, 14 2nd female thread part, 15 Support bolt, 17 Steel column base plate, 18 Anchor bolt, 19 Anchor nut, 20 Manju, 21 rebar, 25 steel column, 26 liner plate, 28 center ink.

Claims (3)

A push-up bolt extending in the vertical direction;
A first female thread portion engageable with the push-up bolt;
A support portion that is provided in connection with the first female screw portion and supports the steel column base plate;
The support part is
A support member for supporting the steel column base plate on its upper surface;
When the steel column base plate is supported on the upper surface of the support member, in order to hold the steel column base plate from the upper side, a support bolt that is movable in the vertical direction on the steel column base plate;
A steel column re-installation jig including a second female screw portion provided to be able to engage with the support bolt so as to face the support member. The steel column rebuilding jig according to claim 1, wherein the support member and the second female screw portion are integrated by a longitudinal member extending in the vertical direction. A method for re-installing a steel column in which a work for fixing an anchor bolt is performed using the steel column re-installation jig according to claim 1.

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