JP4588207B2 - Steel column misalignment correction jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a jig used for correcting a misalignment generated between a lower steel frame for a previously installed column and an upper steel frame added to the steel frame in the construction of the steel column. .
[0002]
[Prior art]
Conventionally, in order to determine the positional relationship in the horizontal direction between the lower steel frame for the column and the upper steel frame, a jig for eliminating the displacement of the upper steel frame with respect to the lower steel frame has been proposed (Japanese Patent Laid-Open No. Hei. 11-303404 and JP-A-11-303406).
[0003]
The jig includes an elongated main body having a single slit that can receive two erection pieces provided at the lower end of the upper steel frame and the upper end of the lower steel frame, and a transverse direction of the slit provided in the main body. And a pair of bolts respectively screwed into a pair of thread grooves extending to.
[0004]
According to this jig, after fixing the main body to the lower steel erection piece by screwing the lower bolt, the lower steel frame is used as a reaction force receiver to the upper steel erection piece by screwing the upper bolt. A horizontal external force can be exerted to cause horizontal displacement of the steel frame, thereby correcting the misunderstanding between the upper and lower steel frames.
[0005]
After the correction of the misalignment, the jig is kept in use for preventing the occurrence of a new misalignment and preventing the upper steel frame from toppling until the main welding between the upper and lower steel frames.
[0006]
By the way, in the column construction, prior to the main welding of the upper and lower steel frames, the beam steel frame is arranged between the two upper steel frames whose misalignment is corrected, and both ends thereof are connected to the upper steel frames. Beam insertion is performed.
[0007]
However, due to the manufacturing error that inevitably exists in the steel for beams, the jig is deformed due to the horizontal force acting on the steel when inserting the beam, and there is a difference between the upper and lower steel frames. is there.
[0008]
In correcting the mistake related to the re-generation, the erection piece of each steel frame is used for mounting the jig and cannot be used.
[0009]
For this reason, in the prior art, a bracket is welded to a lower steel frame, and a jig is attached to the bracket with a hydraulic jack attached to the upper steel frame. According to this jig, by extending the hydraulic jack, a horizontal force is exerted on the upper steel frame using the lower steel frame as a reaction force receiver, and a newly generated misunderstanding can be corrected.
[0010]
However, this has a problem that not only a great deal of labor and time is required for installation, but also the effort and time are required for the removal thereof.
[0011]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a misalignment correcting jig that is suitable for correcting misalignments generated between upper and lower steel frames for columns by beam insertion and that is easy to attach and remove. .
[0012]
The present invention is a jig used to correct a misunderstanding between a lower steel frame for a column installed earlier and an upper steel frame for a column added to the steel frame, And a hook having a hook-like hook, a pair of nuts mounted on the upper and lower ends facing each other, and a pair of bolts respectively screwed to the two nuts. The hook portion protrudes from the main body substantially parallel to the nut. The hooking part can be hooked on one side of one erection piece through two erection pieces provided at the ends of both steel frames, and the hooking part can be hooked on the one erection piece. One of the nuts can be opposed to the one erection piece on the opposite side, and the other of the nuts can be opposite the other erection piece to the opposite of the one erection piece. Can be opposed to the same side.
[0013]
One of the nuts has a protrusion that can contact the steel frame to form a care space between the steel frame and the plate.
[0014]
Operation and effect of the invention
According to the present invention, one of the upper and lower steel erection pieces in which a misunderstanding has occurred, for example, the lower steel erection piece is hooked with the hook portion of the plate body, and then the lower steel erection piece at this time The bolt screwed to the nut facing the head is advanced to bring the tip into contact with the erection piece, and then the bolt screwed to the nut facing the erection piece of the upper steel frame is advanced to apply a horizontal external force to the erection piece. By applying, the upper steel frame can be moved horizontally on the lower steel frame, and a misalignment that is a shift in the horizontal direction of the upper steel frame with respect to the lower steel frame can be corrected.
[0015]
In this invention, the jig | tool which consists of a plate body, two nuts attached to this, and the volt | bolt screwed together by this nut exhibits a flat plate shape as a whole. Further, the hooking portion of the plate body can be hooked to one erection piece through the erection pieces of the upper and lower steel frames. Therefore, even if other jigs are attached to these erection pieces in order to correct the misalignment between the upper and lower steel frames, the gaps between the other jigs and both steel frames can be used. It is possible to correct the misplacement by inserting and arranging jigs and using both erection pieces. Moreover, there is no difficulty in arranging the jig by inserting the jig into the gap, and the jig can be easily removed, and the jig can be easily removed by the reverse operation.
[0016]
When providing a projecting portion on one of the nuts arranged to face each other, when the jig is inserted into the gap by bringing the projecting portion into contact with one steel frame, the steel frame and the jig It is possible to secure a receiving space for a fingertip of an operator who holds the plate between the two plates.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIGS. 1 and 2, in the construction of a steel column, there is shown a lower steel frame 10 that has been installed and adjusted to extend vertically, and an upper steel frame 12 that is added to the steel frame. .
[0018]
The illustrated steel frames 10 and 12 are each made of a steel pipe having a rectangular cross-sectional shape, and the upper steel frame 12 is suspended on the lower steel frame 10 by, for example, a crane (not shown) for addition to the lower steel frame 10. Lowered and placed on it.
[0019]
For suspension by the crane, a plurality of plate-like erection pieces 14 and 16 are attached to the ends of both steel frames 10 and 12, respectively. Each erection piece 14, 16 is provided with a rope (not shown) used for hanging and a hole 18 (FIG. 2) for passing a hook. More specifically, four erection pieces 14 and 16 are arranged on four surfaces of each steel frame so as to be orthogonal to each other and extend in the vertical direction. Each erection piece is usually in a central portion with respect to the extending direction of each side of the rectangle. Further, there is a gap between the upper and lower erection pieces 14 and 16 on each of the four surfaces.
[0020]
The lower steel frame 10 shown in the figure and the upper steel frame 12 are aligned with each other. That is, both the steel frames 10 and 12 are in contact with each other at the upper end surface of the lower steel frame 10 and the lower end surface of the upper steel frame 12 without any horizontal displacement (mistake).
[0021]
By the way, this alignment state is obtained by correcting the misunderstanding by the operation of the conventional misunderstanding correcting jig 20 (indicated by imaginary lines in FIG. 2), and then, by the postscript jig 22 according to the present invention. This is due to the results of the difference correction.
[0022]
That is, after correcting the misalignment by the conventional jig 20, beam insertion is performed under the installation state of the jig, and the repair according to the present invention applied to correct the misalignment that occurs again during the beam insertion. By the operation of the tool 22, the upper steel column 12 located at the position indicated by the imaginary line (FIG. 1) is moved horizontally in the direction of the arrow 24 to the position indicated by the solid line, thereby being brought into alignment.
[0023]
The conventional correction jig 20 includes a main body 26 that is an elongated steel main body 26 provided with a single slit 28 extending in the vertical direction.
[0024]
The jig 20 is suspended by the erection piece 16 of the upper steel frame 12 so that the erection pieces 14 and 16 of both the steel frames 10 and 12 extend through the slits 28 of the jig 20.
[0025]
Two screw grooves (not shown) are provided in the upper and lower portions of the jig main body 26, and bolts 30 and 32 are screwed into both screw grooves, respectively. Both bolts 30 and 32 extend from the outside of the main body 26 to the inside of the slit 28 in a direction crossing the slit 28.
[0026]
The main body 26 of each jig placed on the erection pieces 14 and 16 on the opposite surfaces of the steel frame is fixed to the lower steel erection piece 14 by screwing the lower bolt 30. The upper erection piece 16 receives the pressing force of the upper bolt 32 by the screwing operation of the upper bolt 32 using the lower steel frame 10 as a reaction force support or reaction force support, and horizontally displaces the upper steel frame 12 in a misplaced state. Move in the direction.
[0027]
Next, the mistake correcting jig 22 according to the present invention will be described.
[0028]
The jig 22 of the present invention includes a steel plate 34, a pair of nuts 36 attached to the plate, and a pair of bolts 38 respectively screwed to the nuts 36.
[0029]
The plate body 34 has a rounded overall shape, and includes a main body 40 having a relatively large area and a hook-shaped hooking portion 42 protruding from the main body. As shown in FIG. 1, both nuts 36 are arranged on the upper end surface and the lower end surface of the main body 40 and are opposed to each other.
[0030]
The hook portion 42 has a length dimension (length in the vertical direction as viewed in FIG. 1) that can be inserted between the erection pieces 14 and 16 of the upper and lower steel frames 10 and 12, more specifically, the plate body 34. It has dimensions that allow it to be inserted between the upper and lower erection pieces in a state parallel to the surfaces of the steel frames 10 and 12 (each of the four surfaces).
[0031]
The hooking portion 42 also has a tapered tip end portion 44 extending toward the main body 40 and a flat surface 46 connected to the tip end portion and the main body 40.
[0032]
The hooking portion 42 horizontally moves in one direction (leftward as viewed in FIG. 1) and passes between the two erection pieces 14 and 16, and then defines a portion between the tip portion 44 and the main body 40. The flat surface 46 to be moved is lowered until it hits the lower erection piece 14, and is then hooked to the erection piece by horizontally moving in the opposite direction (rightward direction) until the tip portion 44 hits the lower erection piece 14.
[0033]
Since both nuts 36 have a thickness dimension slightly larger than the thickness dimension of the plate body 34 and have an axis extending in parallel with both the front and back surfaces of the plate body 34, the conventional jig 20 is arranged first and the upper and lower Despite being attached to both erection pieces 14, 16, the jig 22 according to the present invention can be disposed in the gap 48 between both the steel frames 10, 12 and the conventional jig 20.
[0034]
When the hooks 42 of the plate body 34 are hooked on the erection piece 14 and the plate body 34 is made parallel to the surface of the steel frame, the nuts 36 are respectively provided on the lower erection piece 14 and the upper erection piece 16 (more In detail, it opposes these other surfaces).
[0035]
Therefore, the plate body 34 is fixed to the erection piece, that is, the steel frame 10 by rotating the bolt 38 screwed into the lower nut 36 and advancing the bolt 38 and pressing the tip of the bolt against the lower erection piece 14. be able to.
[0036]
Next, the bolt 38 screwed to the upper nut 36 is turned to advance it, and after contacting the upper erection piece 16, further advancement, the upper steel frame 12 is passed through the erection piece 16 and again. A horizontal external force can be applied by applying a reaction force to the lower steel frame 10. Thereby, the upper steel frame 12 on the lower steel frame 10 can be translated, and the misunderstanding can be corrected. In the case shown in the figure, another jig 22 is similarly arranged on the back side of the steel frames 10 and 12 when correcting the misunderstanding, and this jig 22 and the illustrated jig 22 are operated simultaneously or substantially simultaneously.
[0037]
The jig 22 can be disposed upside down with respect to the upper and lower portions thereof, and the hooking portion 42 can be hooked on the upper erection piece 16, and then the upper bolt 38 is brought into contact with the erection piece, Next, it is possible to correct the mistake by screwing in the lower bolt 38.
[0038]
Further, as shown in FIG. 2, one (upper in the illustrated example) nut 36 may have a side surface or a protruding portion 50 protruding. According to this, when the jig 22 is arranged, the projecting portion 50 abuts against the steel frame 10 or 12, and a maintenance space for a worker's hand holding the plate body 34 between the steel frame and the plate body 34. Can be secured. Instead of the illustrated example, the protruding portion 50 can be similarly provided on the other nut 36.
[0039]
The jig 22 according to the present invention can be used as a jig instead of the conventional jig 20.
[Brief description of the drawings]
FIG. 1 is a front view of a jig according to the present invention in a state where the jig is applied to upper and lower pillar steel frames.
FIG. 2 is a right side view of the jig in the state shown in FIG.
[Explanation of symbols]
10, 12 Lower steel frame for columns and upper steel frames 14, 16 Erection piece 20 Conventional jig 22 Jigs 34, 36, 38 according to the present invention Plate, nut and bolt 42, 44 Hook of plate And its tip

Claims (2)

A jig used to correct a misalignment between a lower steel frame for a column installed earlier and an upper steel frame for a column added to the steel frame, A plate having a hook, a pair of nuts mounted on opposite upper and lower surfaces of the plate, and a pair of bolts respectively screwed to the nuts. The part protrudes from the main body substantially parallel to the nut, and the hooking part can be hooked on one erection piece on one side through two erection pieces provided at the ends of both steel frames, respectively. And when the hook is hooked on one side of the one erection piece, one of the nuts can face the one erection piece on the opposite side, Write is the other erection piece, the possible opposite on the same side as the opposite side of the one erection piece jig tongue and groove modification of steel columns. 2. The jig according to claim 1, wherein one of the nuts has a protruding portion capable of contacting the steel frame for forming a care space between the steel frame and the plate body.

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