JPS61277773A - Apparatus and method for tracting reinforcement bar housing unit in traveling construction method - 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 "Field of Industrial Application" The present invention relates to a traction device and method for a steel frame unit in a traveling construction method.

``Conventional technology'' The traveling construction method consists of dividing a large frame built on a building block into several blocks and assembling them at a location where a crane can be operated. ! This method involves assembling the robot by placing it on a running rail installed on the upper part of the body and moving it sequentially. The procedure was to first construct the first divided block in advance! This is a method of assembling on a stage provided at the end of one piece, moving this one block laterally using a hydraulic jack, etc., assembling the next second block on the empty stage, moving it laterally one after another, and then erecting it.

The present applicant also proposed this in Japanese Patent Laid-Open No. 57-116847.

In other words, in the traveling construction method, as shown in Figure 7, reinforced concrete structures constructed in advance are used. Scaffolding 3 for gear rally 2 on one side of body B is assembled so that unit 1 of the steel frame truss assembled on the ground can be placed on the upper end of one gable side of body I B, and the truss can be assembled. 1 unit assembled on the ground. . . . are lifted up and placed on the ground by a crane (not shown) installed on the outside of the frame B, and the placed units 1 and 1 are connected to each other.

For example, when constructing a steel roof for a large space such as a gymnasium, a large crane is required to enter the building.

This is a construction method that involves assembling large-scale temporary shoring and two-work scaffolding on the entire surface under the roof, and assembling the steel frame on the work scaffolding.

A lift amplifier/pusher is a structure in which a steel frame is assembled on the ground in advance and then hoisted or pushed up to construct a frame.

The Pue method is known, but compared to these conventional construction methods, it reduces the need for temporary scaffolding, reduces construction costs, and improves safety and construction accuracy by repeating the same work in a fixed location.

It is possible to shorten the construction period, etc.

In addition, in the above-mentioned figure, 5 indicates a beam and 6 indicates a moving rail.

The conventional method of towing a steel frame unit in the above-mentioned traveling construction method is to attach a center-hole type jack and rollers to the roof steel frame truss unit for traction, and place the jack on a rail installed in advance on a beam in the direction of the girder. For this purpose, the guide rod installed in advance in the direction of the girder is slid into the first unit, and then the next unit is assembled in the vacant steel frame assembly zone and added to the above unit.
A method of constructing a large space steel roof by sequentially sliding, assembling and adding units, and running rails made of channel steel etc. on beams in the direction of girders of the frame constructed in advance, and multiple reaction pins placed at regular intervals. A protruding reaction force rail is installed in parallel,
The unit is equipped with a cylindrical moving shoe that engages with the traveling rail, and a traveling traction device that is equipped with a double-acting jack and a jig that can be freely engaged with and detached from the reaction force bin. Method of sliding the unit by taking reaction force on the force rail (Japanese Patent Application Laid-Open No. 57-1168
No. 47).

``Problems to be Solved by the Invention'' However, the conventional traction means for ironwork requires additional components such as guide rods or reaction rails to ensure reaction force, and these accessories cannot be used after traveling is completed. Although it has to be removed, there is the inconvenience of having to add unnecessary items to the structure of the building with the assumption that it will be removed.

Furthermore, in the above-mentioned Japanese Patent Application Laid-Open No. 57-116847, the provision of a roller is replaced with a shoe made of Teflon, but the Teflon shoe is difficult to attach to a unit steel column base. In other words, iron and Teflon do not adhere to each other, and baking is required to do so.

In addition, the surface pressure is as low as about 150 kg/cnl, and in the case of a large steel frame, the ground contact area becomes excessive, and therefore, it is necessary to change the column base plate to secure the required area. Additionally, it has poor wear resistance.

Not suitable for long distance travel. And the cost is also high.

``Means for Solving Problems'' and ``Operations'' The present invention was made in view of the circumstances of ironwork, and its gist is as follows.

In other words, a concrete foundation was installed on the slab in the girder direction between the existing steel column brackets for the extension, and
As a traveling rail, place a flat par (manufactured by LII) on the top of the column base bracket.

It is also installed horizontally on a concrete foundation to form the traveling rail section, while a separate plate with a special copper alloy is attached to the bottom of the unit's steel column base plate with bolts, allowing the steel frame to be constructed as one block per span. Let's do it. On the other hand, the hydraulic jack for towing is bolted to the primary column base bracket.

Push out the Gebindestab (PC threaded rod) one stroke of the jack, penetrate the web of the tip unit column, and tighten the nut for the threaded steel rod. Shrink the protruding hydraulic jack and pull the column (L unit) one stroke. Next, push out the hydraulic jack, move the nut closer to you, and then compress the hydraulic jack and pull it closer. When the column (1 unit) is no longer pulled, loosen the nut and move the hydraulic jack to the next column bracket. By repeating this operation, the linked steel units are moved horizontally.

Incidentally, the above-mentioned relationship between the hydraulic jack and the Gebinde scoop may be reversed.

By towing in the manner described above, the existing steel column brackets can be used as reaction force bases for extensions, eliminating the need for extra additional configurations.

In addition, by using a special copper alloy as the shoe material, the lower part of the steel frame (column base) is utilized.

It has achieved highly durable traction with a mechanism that allows for easy installation and removal at low cost.

"Example" This will be explained in detail below based on the drawings.

Figures 1a and 1b are a plan view and a front view showing the traction means of the present invention, and in Figure 9, 10 is the steel column base of the unit, 11 is the steel column bracket for the existing extension on the slab, and the relevant A concrete foundation 12 is provided between the brackets 11 at the same level as the brackets 11.

A flat par 13 made of H4 is constructed as a traveling rail on the embankment in the girder direction.

On the other hand, an Oiles mounting plate 14 is attached to the upper surface of the base plate 10a of the steel column base 10 with bolts.

The Oiles mounting plate 14 is shown in detail in Figures 2a and 2b.
Side guides 14a, 1 for the flat par 13
Special copper alloy between 42 and Oiles wear plate 14
b is bolted to the base plate 10a with this surface facing downward.

This constitutes the running rail and the running body.

The traction mechanism takes the reaction force by bolting a bracket 16 that is pivoted to the base end of the hydraulic jack 15 to the steel column bracket 11 located at the front, and a Gebin desturb 17 is pivoted to the tip of the jack 15 via the clevis 18. The Gebindestab 17 is passed through the web of the steel column base 10 and is locked with a screwed nut 19 via a nut backing plate 20.

Then, the protruded hydraulic jack 15 is retracted and pulled back by one stroke.Next, the hydraulic jack 15 is pushed out again, and the nut 19 is further moved toward you.

Contract the hydraulic jack 15 and pull it.

When it becomes impossible to pull it any further, loosen the nut 19, move the hydraulic jack 15 to the next steel column bracket 11, and repeat the above-mentioned operation.

The above-mentioned main step of taking the length is shown in FIGS. 3a"-c.

The relationship between the hydraulic jack 15 and the Gebin desturb 17 in the above-mentioned traction mechanism may be configured to be reversed, and in this case, the hydraulic jack 15, which adds weight when replacing,
It has the advantage of not having to deal with

This aspect is shown in FIGS. 4a-'c.

That is, as shown in Figure 9, the hydraulic jack 15 has its base end pivotally fixed to the steel column base 10, while the Gebinde scoop 17 passes through the upright backrest 16b of the clevis 16a of the bracket 16, and is secured with a screw nut 19. It becomes locked.

Reference numeral 21 in Figure 1 is a nut 19 rotating device, in which a motor 21b is mounted on a special sliding plate 21a, and a gear 21c with a drive shaft is connected to a gear 19a attached to the nut 19.
It is also equipped with a limit switch 21d.

According to this device, when the bolts of the bracket 16 are released and the motor 21b is rotated in the opposite direction to the direction in which the nut 19 is engaged, the device 21 moves forward in a self-propelled manner, which is convenient.

FIG. 5 shows the final movement of the present invention, in which the hydraulic jack 15 is attached to the anti-cavity 22 welded to the flat par 13.
The base end of the jack is pivoted, and the tip of the jack is pivoted to the vertical movement fixed to the steel column base 10 and the bracket 23 which also serves as a down function for final movement.

In addition, the original function of the bracket 23 is to temporarily lift the unit (vertical movement) when the traveling is completed.
As shown in Fig. 6, after the removal work is completed, the upright backrest 23b of the clevis 23a is attached to the steel column base 10 so as to serve as a lower end horizontal lifting plate, and a jack 24 is interposed. That is.

"Effects of the invention" 1) Temporary plates can be attached without changing the column base plate, reducing costs.

2) For the same axial force, a special copper alloy with better wear resistance than Teflon can be used over long distances.

3) Compared to the conventional construction method, by making the Gebin destabe longer, there is less refilling work and the construction period can be shortened.

4) Reaction base, attachment, and removal are no longer necessary.

[Brief explanation of drawings]

1A and 1B are a plan view and a front view of the traction means of the present invention, and FIGS. 2A and 2B are front views of the essential components of the present invention. Side view, Figure 3.4 a''-c is the main process drawing of the present invention, Figure 5 is a construction diagram of the present invention at the time of final movement, Figure 6 a,
Fig. 7b is a drawing showing the procedure for lifting and lowering the unit according to the present invention, and Fig. 7 is a side view showing the sliding and connected state of the scaffold and the steel truss unit in the traveling construction method. DESCRIPTION OF SYMBOLS 1... Unit, 2... Gear rally, 13... Scaffolding, 5... Beam, 6... Movement rail, 10... Steel column base, 10a... Base plate, 11... Steel column bracket 12... Concrete foundation, 13... Flat bar, 14... Oiles mounting plate, 14a...
・Side guide, 14b... Oiles wear plate 15... Hydraulic jack, 16... Bracket, 16
a... Clevis, 16b... Standing backrest, 17.
... Gebindestaap, 18... Clevis, 19...
・Natsuto. 19a... Gear, 20... Nut backing plate, 21...
・Nut rotation device, 21a... Special plate for slide, 21b... Motor, 21C... Gear, 21
d...Limit switch. 22... Anti-cavius, 23... Vertical movement and down bracket'), 23a... Clevis, 24... Jacket. ψshi7pus a, ' b. φj/

Claims (2)

[Claims] (1) A flat bar as a traveling rail is installed on the concrete foundation between the existing extension steel column brackets on the slab, while a special copper alloy attached to the bottom of the unit's steel column base plate is installed. A steel frame unit in a traveling construction method, characterized in that an inchworm mechanism is installed between a bracket attached to a front steel column pedestal and the steel column pedestal, and an inchworm mechanism is installed in which a plate is attached and a Gebindestab is attached to the tip of a hydraulic jack. traction device. (2) A concrete foundation was installed on the slab in the girder direction between the existing steel column brackets for extension, and a flat bar was placed on the top of the column base bracket as a traveling rail, and it was placed horizontally on the concrete foundation. It is installed to form the running rail section, and a separate plate with special copper alloy is attached to the bottom of the unit's steel column base plate with bolts, and the steel frame is constructed as one span for one block. , hydraulic jack for towing,
Tighten the bolt to the next column pedestal bracket, extend the Gebindestab one stroke of the jack, penetrate the web of the tip unit column, tighten the nut for the threaded steel bar, and retract the protruded hydraulic jack to pull the column one stroke. Next, the hydraulic jack is pushed out, the nut is moved toward you, the hydraulic jack is compressed, and the column is pulled in. When the column can no longer be pulled in, the nut is loosened and the hydraulic jack is moved to the next column bracket.By repeating this process, the connection can be made. A method for towing a steel frame unit in a traveling method, characterized by horizontally moving a tightened steel frame unit. The above-mentioned relationship between the hydraulic jack and the Gebin desturb may be reversed.