JPS5942143B2 - Support pillar construction method and support pillar construction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support pillar erection method developed for the reverse pouring method and a support pillar erection device used directly to carry out the method.

As shown in Figure 1, the reverse construction method is to erect supporting pillars on the trench ground a, and then, while cutting the roots in part C, construct the superstructure in part d at the same time. This construction method has the effect of shortening the construction period by proceeding with underground construction and superstructure construction at the same time.

It is an object of the present invention to further improve the precision of a structure created by this reverse construction method, and to enable the installation of support pillars to be performed more easily and quickly.

The present invention will be described in detail below with reference to the drawings.

FIGS. 2 and 3 are detailed views of the support pillar erection device A of the present invention.

In the present invention, the base frame 1 is constructed in the shape of a rectangular frame. In addition to making the lower truck 3 movable along the rail 2 through the provided wheels 4, four sets of stopper devices 5 are provided on the base frame 1 so as to be slidable and fixed, respectively, and the adjusting screw rods 5a are provided on the base frame 1. By pressing against the lower cart 3, the fixing position of the cart 3 can be adjusted.

Furthermore, two rails 6 are laid on the lower truck 3, which are orthogonal to the rails 2, and the upper truck 7 is structured in a square frame shape.
In addition, four sets of stopper devices 9 are provided on the lower truck 3 so as to be slidable and fixed, respectively, and the fixing position of the truck 7 is determined by pressing the adjusting screw lever 9a against the upper truck 7. Make it adjustable.

Further, a rotary table 10 formed in an annular shape is provided on the upper truck 7 so as to be rotatable 360 degrees around the central axis of the rotary table 10, and a rotation locking device 11 is provided on the upper truck 7 to fix the position of the rotary table 10. be adjustable.

The rotation locking device 11 may be one that can be held between the upper and lower edges of the lower flange of the rotary table 10 by tightening screws or the like.

Furthermore, fixed brackets 12 are protruded from each quarter of the circumference of the rotary table 10, and a sliding table 14 is provided which moves in the radial direction of the rotary table 10 by means of screw rods 13 that are screwed into the brackets 12. An arm 16 is connected to the inner end of the sliding table 14 via a shaft 15 so as to be able to rise and fall freely, and guide rollers 18 for guiding support pillars 17 are pivotally supported on the free ends of the arms 16 by shafts 19. The true pillar guide device 20 is constructed by the following.

In addition, jacks 21 are installed at symmetrical positions on the rotary table 10, respectively.

21a is the bundle.

Note that reference numerals 22 indicate work walkways installed adjacent to the outer edges of the base frame 1.

Next, the support pillar construction method of the present invention will be explained with reference to FIGS. 4 to 11.

In the figure, 23 is the ground, and 24 is a reinforcement layer on the ground surface.

In the present invention, as shown in FIG. 4, a casing dryer (-26) is set in a predetermined position by a crawler crane 25, and a casing 27 is pressed into the ground 23 to a desired depth as shown in FIG. And that casing 27
The inside of the casing 27 is excavated using an excavator grab 28, and then a reinforcing bar cage 29 is suspended in the excavated hole as shown in FIG. 6, and a tremie tube 30 is inserted into the casing 27 as shown in FIG. By cement mixer truck 31,
As shown in FIG. 8, concrete 32 is poured into the hole.

Next, the above-mentioned support pillar erection device A of the present invention is set on the casing driver 26.

Next, as shown in Fig. 9, a large truck crane 33
After hoisting the support pillar 17 using the By lowering the lower end 17a into the poured concrete 32, and supporting the brackets N7b protruding from both sides at the upper end of the support pillar 17 by the jacks 21 erected on the support pillar erection device tA. Support pillar 17
hold at a given level.

In this state, a plurality of sets (four sets in this embodiment) of adjustment jacks 34 are arranged between the support pillar 17 and the inner wall of the casing 27, and these adjustment jacks 34 and the support pillar erection device A are used to tighten the support pillar. 17 is set correctly at a desired position, the poured concrete 32 is cured.

Once the concrete 32 has hardened, as shown in FIG. 11, each device is removed, the casing 27 is pulled out, and any gaps are backfilled.

Next, the above-mentioned support pillar erection device A and adjustment jack 3
4 will be described in detail.

First, as shown in FIG. 9, when the true pillar 17 is lifted up by the crane 33 and then suspended into the casing 27 through the supporting true pillar erection device A, the rotating table 10 of the device tA is used.
Rotate the upper arm 16 upward as shown by arrow B in FIG. 2 to raise it.

In this way, the opening in the turntable 10 becomes larger, making it easier to pass the true pillar 17 through it.

Once the true pillar 17 passes through the opening in the rotary table 10 as shown in FIG. contact the side wall of the

The position adjustment of the guide roller 18 is performed using the bracket 12.
By rotating the threaded rod 13 screwed into the sliding base 1
4 and arm 16.

In this embodiment, the true pillar 17 has a square cross-sectional shape, but the true pillar 17 may also be a steel pipe or an H-shaped steel.

Once the true pillar 17 is held by each guide roller 18, the phase of the true pillar 17 is corrected by rotating the rotary table 10 in the direction of arrow C in FIG. 3 as necessary.

The rotating table 10 may be fixed by a rotation locking device 1.

Next, while the true pillar 17 is guided by the guide roller 18,
When the lower end 17a of the true pillar 17 is further lowered into the casing 27 and reaches a predetermined level by being immersed in the poured concrete 32 as shown in FIG.
A bracket 17b protruding from the upper end of the rotary table 7 is supported by a jack 21 on the rotary table 10.

The height of the jack 21 can be adjusted by operating the knob 21a.

As mentioned above, as shown in FIG.
The upper part of is held by four guide rollers 18,
The lower part thereof is held by four adjustment jacks 34.

Therefore, by adjusting the upper and lower holding parts,
The position of the true pillar 17, front and back, left and right inclinations, etc. can all be corrected.

That is, according to device A, the left and right positions can be adjusted by operating the adjusting screw rods 5a of each stopper device 5 of the lower truck 3, and by operating the adjusting screw rods 9a of each stopper device 9 of the upper truck 7. You can adjust the position forward and backward.

The inclination of the true pillar 17 can be corrected by expanding and contracting each of the four adjustment gears 34 arranged below.

The above correction work is done by pouring concrete! It goes without saying that this must be done while J-) 32 has not yet hardened.

Since the present invention is as described above, the following excellent effects can be obtained.

. (1) All corrections such as the position and inclination of the support pillar can be made within an error of two elbows.

(2) With conventional construction methods, construction could only be carried out so that the center of the true pillar coincided with the center of the casing hole, but according to the present invention, the true pillar can be constructed at any eccentric position within the casing hole. , it is possible to improve the accuracy of the construct accordingly.

(3) Since the construction method and equipment are rational, construction is easy and the construction period is significantly shortened.

(4) A plurality of true pillar guide devices are installed on the rotary table so that the base of the arm with a guide roller that can be raised and lowered can be moved in the radial direction and the fixed position can be adjusted. As a true column, it can be applied to any type of column such as a square column, a steel pipe column, an H-shaped steel column, etc.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the reverse pouring method, FIG. 2 is a vertical sectional elevational view of the apparatus of the present invention, FIG. 3 is a plan view thereof, and FIGS. 4 to 11 are illustrations of the steps of the method of the present invention. A...Supporting pillar erection device of the present invention, 1...Base frame, 2...Shi-ru, 3...Lower truck, 4...
...Wheel, 5...Stopper device, 6...Rail,
7... Upper truck, 8... Wheels, 9... Stopper device, 10... Turning table, 11... Rotating lock device,
12...Bracket, 13...Screw rod, 14...
Sliding table, 15...axis, 16...arm, 17...
Support pillar, 18... Guide roller, 19... Shaft,
20... True pillar guide device, 21... Jacket, 22
...Work walkway, 23...Ground, 24...Reinforcement layer, 25...Crawler crane, 26...Casing driver, 2T...Casing, 28...Hammer grab, 29...・Reinforced cage, 30... tremie pipe,
31... Cement mixer truck, 32... Placed concrete, 33... Truck crane, 34...
・Adjustment jack.

Claims (1)

[Scope of Claims] 1. A casing is press-fitted into the ground, the inside of the casing is excavated, a reinforced concrete foundation is placed at the bottom of the casing, and the casing is moved back and forth and left and right via orthogonal rails. , and a 360-degree rotatable support pillar erection device is installed on the ground, the support pillar is suspended in the casing by penetrating this device, and the lower end of the support pillar is placed in the poured concrete. An arm equipped with a guide roller, which is provided in the penetrating portion and is tiltable and has a slidable base, supports the support pillar in a height-adjustable manner by a jack provided on the support pillar erection device. The support pillar is held between the supporting pillar guide devices, and the supporting pillar is centered using the supporting pillar setting device and a plurality of sets of adjustment jacks arranged between the supporting pillar and the casing. A support pillar construction method characterized by curing the poured concrete. 2. A lower truck is provided that can be moved in one direction and its fixed position can be adjusted via rails laid on the base frame, and the lower truck moves in a direction perpendicular to the direction of movement of the lower truck via the rails laid on the lower truck. An upper truck is provided that can freely adjust the fixing position, a rotary table that can rotate 360 degrees and adjust the fixing position is provided on the upper truck, and a jack for supporting the true column is provided on this rotary table. This support pillar erection device is provided with a plurality of sets of pillar guide devices in which the base of an arm with a retractable guide roller is movable in the radial direction so that the fixing position can be adjusted.