JPS62156478A - Method and apparatus for controlling building of reinforcing bar pillar - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a steel column erection control method and apparatus.

``Conventional technology'' Conventionally, when the column joints of each joint of a high-rise steel structure are fixed by welding, the assembly procedure is mostly as follows.
A layered construction method is used in which the next set of steel frames is stacked on top of one set that has been fixed (hardened) first.

The procedure of this construction method is, for example, as shown in Fig. 6, the erected steel column 1a is temporarily held on the already fixed preceding steel FT column tb using the erection piece 2, and then the adjacent steel column Temporarily attach the beam 4 between the joint parts 3 of 1a,
After that, in order to assemble the heads of the steel columns 1a in the normal planar position (that is, vertically), wires or chains 5 are stretched between the steel columns 1a within the necessary range, and the steel columns 1a are assembled with a so-called distorted surface. Perform construction preparations.

After that, we quickly carried out the fixing work (final tightening, welding) of the 4 beams and the legs of the steel column 1a, and completed the removal (cutting) of the temporary Niretsu Jin Piece 2 and the removal of the wire or chain 5. Part of the steel frame erection work will be completed.

"Problems to be Solved by the Invention" By the way, in the above-mentioned procedure, not only does the straightening work involve work at heights and require highly trained work, but it also requires a lot of careful work. Kutsujin piece 2
In addition to the cost required to maintain and manage the wires 5, etc., there were also disadvantages in that it required a long construction period for assembling and dismantling temporary materials and implementing safety measures.

In addition, the above-mentioned erection piece 2 gets in the way during welding (fixing) work and reduces work efficiency, so there is a risk of welding defects occurring. There are dangers such as falling objects and falling sparks, and there are also problems with construction efficiency and safety.

Furthermore, before straightening is carried out, it is necessary to complete the assembly of a wide range of steel columns 1a and beams 4, and the above-mentioned procedure requires the construction of pillars and beams - straightening and fixing (main), as shown in Figure 5. (tightening, welding) - wire wiping is a series process. For this reason, each worker was needed for a short period of time, and there was a problem in that a great deal of effort had to be put into process management to arrange to secure the necessary workers on a specific date. .

Therefore, the present invention aims to provide a method and device for controlling the construction of a single pillar of steel, which improves construction efficiency, shortens the construction period, and ensures safety, labor, and quality. do.

"Means for Solving the Problems" In order to achieve the above object, the present invention, as shown in Figs. A steel column erecting control device 11, which is removably interposed between the legs of the steel columns 1 (la) to be installed, is used to temporarily hold the steel columns and to control the erecting finely as necessary. After that, the work will move on to fixing the steel columns.

Further, the steel frame column erection control device 11 includes a pedestal 14 in which a support column 21 is erected from a horizontal pedestal 20 that can be detachably fixed to a solid flat surface of a steel frame, and a pedestal 14 that has a support column 21 erected from the support column 21. 20, and is extendable and contractible in the same direction as 20.
At least two adjustment mechanism parts 17 each consisting of at least one arm 16 whose tip end can be detachably connected to the leg of the steel column 10a to be erected are erected from at least two orthogonal directions on the horizontal plane of the steel frame. The bases 14 are positioned on the same plane and are integrated via connecting members 18a and 18b installed between the bases to enable alignment.

"Operation" When erecting a steel column, for example, first place the steel column erecting control device 11 on a horizontal flat surface on the ground, and place the tip of the horizontal pedestal part 20 of each pedestal 14 of the two folding mechanism parts 17 ( Second
(see point Δ in the figure) and the tip of arm 16 (see point C in figure 2)
Adjust by extending or contracting each arm 16 so that the straight line connecting them is perpendicular to the bottom surface of the pedestal 14, and then connect the tip of each arm 16 to the steel column 1 that will be erected from now on.
The steel column erection control device 11 is attached to the steel column 10a by being connected to the upper leg of the steel column 0a. At this time, it is preferable to integrate the control device 11 into the steel column IQa by appropriate means so that the steel column IOa is vertically incorporated into the bottom surface of the pedestal 14.

Next, use a crane or the like to lift the four steel columns IQa to near the head of the steel column 10e to which they are attached, and then
Lower the horizontal stand part 20 of each frame 14 by pressing the top end of the horizontal stand part 20 against the top 81 side surface of the steel column 10e.
, the horizontal plane part of the iron rack l& (in the illustrated example, the joint part 12
a) by an appropriate means, and then (the wire that was hoisting the iron f1 pillar 10a is released).

The steel column 103 is now installed almost vertically, but next we check mechanically (from above) whether the head of the steel column 10a is within the allowable range with respect to the regular plane position. Hanging a string with a weight attached) or electrical Nlt! This is confirmed using a measuring device (such as a laser beam directed toward a cuget provided on the steel column 10a from above), and each arm 16 is extended or contracted as necessary to make fine adjustments to the construction.

At this point, we will start fixing (welding) the column joint part of the -column part, but if you want to precede the beam installation work in the next process,
After erecting the adjacent steel column 10a in the same manner and lowering the beam 12 between them, work begins on fixing the joints of the steel column IQa and the beam 12. Thereafter, the control device 11 is removed and lowered to the ground to prepare for the next erection.

In this manner, in the present invention, as shown in FIG. 5, various operations are performed simultaneously and repeatedly in a so-called flow operation.

“Embodiment” An embodiment of the present invention will be described below based on the accompanying drawings.

In FIG. 1, reference numeral 10a denotes a steel column to be erected, and a steel f1 column erecting control device i! is attached to the leg of the steel column 10a in advance. 211 is installed. 1Ob is a steel column undergoing construction adjustment, 10c is a steel column temporarily held after the construction adjustment has been completed, lod is a steel column undergoing fixing work, and foe is a preceding steel column that has been fixed.

Iron gates attached to the above steel pillars 10b, IOc, IOd
The lower part of the column erection control device 11 is connected and fixed to the upper surface of the 'f412 (strictly speaking, the joint section 12a) assembled between the preceding steel columns foe that have already been fixed. In addition, a steel column erection control device 11 is attached to the fixed preceding steel column 10e.
A net 13 for welding work is arranged so as to open the net.

Next, as shown in FIG. 2 and FIG. OnetA! ! Mechanism part 17. '17 in two perpendicular directions on the horizontal plane of the steel frame (
In the illustrated example, the bottom surfaces of the horizontal base portions 20 of the two frames 14 and 14 are located on the same plane, and the connecting member is constructed between these frames 14 and 14 so that the construction can be adjusted from the X-Y axis direction). They are integrated via t8a and t8b.

The pedestal 14 has a support column 21 rigidly erected from the rear of a horizontal platform 20 that is detachably fixed to the upper surface of the joint section 12a. That is, as shown in FIG. 4, on the upper surface of the joint part 12a, two pedestal brackets 22 are fixed in advance via fixing jigs 23, and the horizontal pedestal part is attached to the pedestal brackets 22. 20 are combined into bin 24.

A loose hole 20a is provided at the top end of the horizontal platform portion 20.
A guide roller 25 is attached that can move forward and backward in the longitudinal direction of the horizontal platform portion 20 by a slide mechanism such as the above, and the guide roller 25 is in contact with the side surface of the head of the fixed leading steel column 10e.

A first arm 15 consisting of a hydraulic cylinder is horizontally and rigidly extended from the upper part of the support column section 21, and the tip of the piston rod section 26 is erected into the iron construction column 10b via a suitable stand bolt or the like. It is connected to the lower side of the leg.

An outer tube 27 is rotatably supported at the upper end of the support column 21, and an inner tube 28 is telescopically fitted into the outer tube 27. The extended position is fixed.

A hydraulic cylinder 30 is connected to the tip of the inner tube 28, and the hydraulic cylinder 30 and the inner and outer tubes 28.2 and 28.2 are connected to each other.
7 constitutes the second arm 16. The tip of the piston rod portion 31 of the hydraulic cylinder 30 is connected to a pin 32 on the side surface of the upper leg of a built-in steel column 10b or the like. In addition, 33 in FIG. 2 is a chain for preventing rotation.

Therefore, in this embodiment, when installing the control device 2211 on the steel column 10a to be erected, the tip of the guide roller 25 (see point A in FIG. 2) and the hydraulic cylinder (
Adjust both members 25.2 as appropriate so that the straight line connecting the two points at the tip of the piston rod section 26 (see point B in FIG. 2) of the first arm) 15 is perpendicular to the bottom surface of the pedestal 14 (horizontal pedestal section 20).
Adjust by moving 6 forward/backward itl+.

Then, the piston rod portion 26 of the hydraulic cylinder 15
After the tip is connected to the lower leg of the steel column tOa, the tip of the piston rod portion 31 of the hydraulic cylinder 30 constituting the second arm 16 is connected to the upper leg of the steel 1↑ column 10a. At this time, if necessary, the length of the chain 33 is expanded or contracted to change the mounting angle of the outer tube 27, or the mounting position of the knock pin 29 is changed to change the extension position of the inner tube 28.

Next, the hydraulic cylinder 30 is telescopically operated so that the tip of the piston rod 31 (see point C in FIG. 2) is positioned on the extension of the straight line connecting the tip of the guide roller 25 and the tip of the piston rod 26 of the hydraulic cylinder 15. position.

Such a control device 11 is fixed to the frame support 22 on the upper surface of the joint section 12e by pressing its guide roller 25 against the head of the fixed preceding steel column 10e when the steel beam column is erected. Then, the steel column 10a is attached substantially perpendicularly to the steel column 106, as described above.

At this time, it goes without saying that minute deviations in the column joint can be corrected by the hydraulic cylinder 15, and fine adjustments to the head position of the steel column 10e can be corrected by the hydraulic cylinder 30.

In the above embodiment, the control device 11 is first placed on the floor of the first floor of the steel frame, the fixed preceding steel column 10e, etc. instead of the steel column 10a to be erected, and then the control device 11 is installed on the first floor of the steel frame or on the fixed preceding steel column 10e. The steel frame column 10a may be held in place and adjusted. Further, the expansion and contraction mechanism of the first and second arms 15, 16 is not limited to a hydraulic cylinder, and various mechanical adjustment means such as a rack and pinion may be used. Furthermore, as a device for measuring whether the head of the erected steel column lob is within an allowable range with respect to the regular plane position, the above-mentioned steel column lob is measured from the ground or from the mount 14 of the control device 11 It is conceivable that a laser beam is fired continuously at a cooget attached to the head, but in this case, the beam is converted into electricity (No. The g!!l amount of the adjustment mechanism section 17 may be displayed by the display means, and the stroke amount of the hydraulic cylinder etc. may be adjusted based on this. In this case, in order to distinguish it from sunlight, it may be pulsed. More suitable.

"Effects of the Invention" As explained above, according to the present invention, (1), since the vertical angle of 11 degrees is secured at the same time as the steel column is erected, re-erecting requires only minor adjustments, increasing construction efficiency.

In other words, eliminating the conventional distortion correction process leads to shorter construction times.

2) Since the rebuilding work can be done at hand (at the legs of the steel columns), the work is easy and safe, and does not require skilled workers. ,
This makes it easier to secure labor and ensure quality.

3) Since the assembled steel frames are fixed one after another, the period of unstable temporary fixing is shortened, improving the safety of the entire steel frame construction work.

4) /8 Since there is no need for an erection piece that gets in the way of welding work, welding work becomes easier, and there are prospects for automation of welding in the future.

Etc. Nori J fruit is obtained. Furthermore, the steel frame column erection control device has an extremely simple structure, and has the advantage of being able to reduce construction costs.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the configuration of the present invention, Fig. 2 is a vertical cross-sectional side view of the steel column erection control device, Fig. 3 is a cross-sectional plan view of Fig. 2, and Fig. 4 is the main part of the frame. An enlarged perspective view, FIG. 5 is a comparative explanatory diagram of the process, and FIG. 6 is a schematic diagram of a conventional example. 10a to 10e... Steel column 11... Steel column erection control device 12... Beam 14... Frame 16... Second arm 17... Adjustment mechanism section 20... Horizontal base section 21 ... Yoshio Imaoka, patent attorney and representative of the Support Pillar Department.

Claims (2)

[Claims] (1) When erecting a steel column, a steel column erecting control device that is removably interposed between the solid plane part of the steel frame and the legs of the steel column to be erected is used to temporary retention of
A method for controlling erection of a steel frame column, characterized in that fine adjustment of the erection is made as necessary, and then the work for fixing the steel column is started. (2) a pedestal with a support column upright from a horizontal platform that can be removably fixed to a solid flat surface of a steel frame; At least two adjustment mechanisms, each consisting of at least one arm whose tip end can be detachably connected to the leg of the steel column to be erected, can be erected from at least two directions at right angles on the horizontal plane of the steel frame. A steel frame column erection control device characterized in that the bottom surfaces of each of the pedestals are located on the same plane and are integrated via a connecting member installed between the pedestals.