JP3523838B2 - Lift-up method and lift-up system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift-up method and a lift-up system in which a beam is lifted by a lift-up device provided on a frame and the beam is placed at a beam installation position in construction of a structure.

[0002]

2. Description of the Related Art Conventionally, in the construction of high-rise structures and the like, a steel frame beam is pulled up by a lift-up device installed on the upper part of the steel frame column and placed at the beam installation position, and the steel frame beam is joined to the steel frame column. The lift-up construction method of erection is widely adopted (for example, the lift-up construction method described in JP-A-11-210089). In the lift-up method, a pair of lift-up devices is used to lift both ends of the steel beam.

[0003]

However, in the conventional lift-up method, when a plurality of steel beams are installed at different positions in plan view, the lift-up device is installed above each beam installation position. Since it was necessary, there was a problem that the equipment would be enormously expensive.

Further, in the construction of a high-rise structure, the steel column may incline by several millimeters due to the weight of the lift-up device. , A space is provided between this joint and the bracket to which it is joined. However, in the state where the steel beam is arranged at the beam installation position, the beam cannot be properly arranged at the beam installation position because a gap is generated between the steel beam joint and the bracket.

An object of the present invention is to construct a beam by arranging the beam at the beam installation position by a lift-up method while suppressing an increase in equipment cost and by arranging the beam at the beam installation position with high accuracy. It is to be able to do it more rationally.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 uses a beam (mega truss 1 by a lift-up device 21 as shown in FIGS. 2 to 4, for example.
3) is a lift-up construction method of hoisting and arranging it at the beam installation position 3, and the beam is installed at the beam installation position 3 of the opposing steel frame column 11.
The bracket 15 to which the 13 ports 13a are joined is provided,
The rails 23 are installed in parallel on the brackets 15 facing each other.
Then, the base unit 20 that moves on the rails 23 parallel to each other is installed.
The lift-up device 21 provided on the base 20
After fixing the beam 13 in the suspended state by the
20 to the rail 23, and the beam 13 to the beam installation position 3
It is characterized by arranging .

Here, the beam installation position means a position where the beams are bridged. For example, as shown in FIG. 6, the space between the brackets 15 provided on each of the opposing columns is the beam installation position.

The meaning of "moving the base part in the horizontal direction" is to move the base part so that the moving direction of the base part includes the horizontal direction. Therefore, this includes not only the case of horizontally moving the base unit at substantially the same height but also the case of moving the base unit in a direction inclined with respect to the horizontal plane.

As means for moving the base portion in the horizontal direction, for example, rail equipment for moving the position by sliding the base portion 20 on the rail 23 (rail 23 shown in FIG. 11,
The slide base 25, the push-pull device 26), etc. may be mentioned, but the structure is not particularly limited to this.

As means for fixing the beam in a suspended state, for example, a lift-up device 21 shown in FIG. 7 is used.
An example of the retracting device 21a is provided in the. By locking the cord member 22 with a fixing pin (not shown) provided in the retracting device 21a, the cord member 22 is retracted.
It can be fixed to a. Therefore, by connecting the lower end of the rope member 22 to the beam and fixing the rope member 22, the beam can be fixed in a suspended state. In addition,
The fixing means is not limited to the retracting device, as long as the beam can be fixed in a suspended state.

According to the first aspect of the present invention, the beam is transported by horizontally moving the base portion provided with the lift-up device, so that the beam is lifted by the lift-up device in plan view. The position is moved to a position different from this position. Therefore, unlike the prior art, the beams can be arranged at different positions in plan view without installing a plurality of lift-up devices at different positions in plan view.
Therefore, it is possible to reduce the number of lift-up devices installed as compared with the conventional one, suppress an increase in equipment cost, and perform a beam construction rationally. Further, since the number of lift-up devices installed can be reduced, the period required for removing the lift-up devices temporarily installed on the body can be shortened as compared with the related art. Further, when the beam is conveyed, the beam is fixed by being lifted by the lift-up device, so that the beam can be stably conveyed. The above is opposed
It is installed at the beam installation position of the steel column, and the beam joint is joined.
The rail installed on the bracket is equipped with a lift-up device.
It can be realized by moving the obtained base part.

According to the second aspect of the present invention, for example, as shown in FIGS. 2 to 4, 7, and 11, the beam 13 is suspended.
A lift-up system 2 including a lift- up device 21 that is arranged at a beam installation position 3 and is a steel column facing each other.
11 is provided at the beam installation position 3 and the connection 13a of the beam 13 is
Rails 23 installed in parallel on the bracket 15 to be joined
And move on the parallel rails 23 to lift
The base section 20 on which the table 21 is installed and the base section 20 are installed.
Moving means (rail 23, slide base)
25, push-pull device 26) and lift-up device 21
Fixing means for fixing the beam 13 in a suspended state (retractor
21a) and the beam 1 is lifted by the lift-up device 21.
3 should be fixed by the fixing means 21a in a state of being lifted.
, Moving means (rail 23, slide base 25, push-pull equipment)
The base portion 20 is moved onto the rail 23 by the installation 26), and
13 is arranged at the beam installation position 3 .

According to the second aspect of the invention, the base portion is reattached.
Since the lifting device, moving means and fixing means are provided, the beam can be lifted by the lifting device.
The base is fixed by the moving means while being fixed by the fixing means.
The beam can be moved in a horizontal direction to move the beam from a position in which the beam is lifted by the lift-up device to a position different from this position in a plan view. Therefore, unlike the conventional case, when arranging the beams at different positions in plan view,
There is no need to install a plurality of lift-up devices at different positions in plan view. Therefore, it is possible to reduce the number of lift-up devices installed as compared with the conventional one, suppress an increase in equipment cost, and perform a beam construction rationally. Further, since the number of lift-up devices installed can be reduced, the period required for removing the lift-up devices temporarily installed on the body can be shortened as compared with the related art. Further, when the beam is transported, the beam can be stably transported because the beam can be fixed while being lifted by the fixing means of the lift-up device. The above is the beam installation position of the opposite steel column
Installed on the bracket where the beam connections are joined
Lifted device, moving means and fixing means
It can be realized by moving the provided base.
It

The invention of claim 3 is the same as that of claim 2.
A lift-up system, for example, as shown in FIG. 6, the base portion 20, pushing the opposing steel columns 11
Distance adjusting means (span adjusting device) for adjusting the distance between them
24), which are opposed by the distance adjusting means
Beam between the brackets 15 facing each other with the bone pillar 11 pressed
13 is arranged .

Here, as the distance adjusting means, for example,
As shown in FIG. 7, there is a span adjusting device 24 that pushes and supports a column by a support portion 24a with a hydraulic jack or the like, but is not particularly limited to this configuration.

According to the third aspect of the invention, the base unit is installed.
The distance between the columns is adjusted by the beam distance adjusting means.
You can adjust the distance between the two
At the beam installation position between the rackets, it is possible to reliably secure a space for the beam span. Therefore, unlike the prior art, the beam can be lifted and placed at the beam installation position without setting the beam length sufficiently shorter than the span of the beam. Therefore, a beam having a length substantially equal to the span of the beam can be lifted and accurately placed at the beam installation position, so that the beam can be constructed more rationally.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

[First Embodiment] The lift-up system and the lift-up method according to the first embodiment are applied to, for example, construction of the high-rise structure 1 shown in FIG. FIG. 1 is a schematic front cross-sectional view showing a steel frame of a high-rise structure 1. The opposing steel-framed columns 11 that are the core of the high-rise structure 1
Mega trusses 12, 13 and 14, which are steel beams, are bridged over. In FIG. 1, the third floor above ground of the high-rise structure 1
The third floor portion is illustrated.

2 to 4, the beam installation position 3 where the mega truss 13 is installed is shown by an imaginary line. FIG. 2 is a front sectional view of an essential part showing an application example of the lift-up system 2 of the first embodiment, FIG. 3 is a horizontal sectional view of the essential part, and FIG. 4 is a side sectional view of the essential part. .

As shown by the beam installation position 3 in FIG.
The mega truss 13 is arranged so as to bridge the opposing steel frame columns 11. As shown by beam installation positions 3 in FIG. 3, the mega trusses 13 are arranged in parallel at substantially equal intervals at six different positions in plan view so as to be parallel to each other. As shown by the six beam installation positions 3 in FIG. 4, the mega trusses 13 are arranged at substantially the same height position.

As shown in FIG. 4, below the beam installation position 3, two ground assembly gantry 4 are installed on the mega truss 12. As shown in FIG. 3, the ground assembly gantry 4 is arranged in the beam installation position 3 in the beam bridging direction (vertical direction in FIG. 3).
It is installed along. As shown in FIG. 4, a mega truss 13 is held on the ground assembly gantry 4 in an upright state. Thereby, the mega truss 13 is arranged on the mega truss 12 along the beam bridging direction.

As shown in FIG. 2, the lift-up system 2 is installed above the beam installation position 3 with respect to the steel column 11. As shown in FIG. 3, the lift-up system 2 includes rails 2 that are respectively provided on opposing steel frame columns 11.
3 and a base portion 20 provided on the rail 23. As shown in FIGS. 3 and 4, the lift-up system 2 includes two base parts 20.

As shown in FIG. 2, the base 20 is bridged between the steel columns 11 facing each other. As shown in FIG.
The two base parts 20 are arranged along the beam bridging direction of the beam installation position 3 (vertical direction in FIG. 3). As shown in FIG. 5, the base unit 20 includes erection garters 20a arranged in parallel with each other. FIG. 5 is a plan view showing an installation portion of the base unit 20.

As shown in FIG. 6, the base 20 has a lift-up device 21 for lifting the mega truss 13 and a span adjusting device 24 for adjusting the distance between the steel columns 11 facing each other.
(Distance adjusting means) is provided. FIG. 6 is a front view showing the installation portion of the base unit 20.

Two lift-up devices 21 are installed on the base unit 20. Both ends of the mega truss 13 are respectively lifted by two lift-up devices 21. A hydraulic pump unit 21b that supplies hydraulic oil to a hydraulic cylinder (described later) of the lift-up device 21 is installed on the base unit 20.

As shown in FIG. 7, one lift-up device 21 includes two retraction devices 21a. Figure 7
FIG. 4 is a front view showing a state in which the mega truss 13 is being lifted by the lift-up device 21, and an enlarged view of the base 20 and the vicinity of one end of the mega truss 13.

The retraction device 21a is a chain-shaped cord member 2
This is a device for pulling in or pulling out the rope member 22 by locking 2 with a pin and reciprocally moving the position of the pin by a hydraulic cylinder (described in JP-A-10-25086). The retracting device 21a is provided with a fixing pin (not shown). By locking the cord member 22 with the fixing pin, the cord member 22 can be fixed to the retracting device 21a.

Position 18 of the hanging point above the end of the mega truss 13
The central part of the support tool 19 is connected to. As shown in FIG. 8, the support tool 19 uses the hanging point position 18 as an axis.
The mega truss 13 is rotatably connected in the thickness direction (left and right direction in FIG. 18). FIG. 8 is a side sectional view showing the lift-up device 21 and the mega truss 13 in FIG. As shown in FIG. 7, at both ends of the support tool 19,
The lower ends of the cord members 22 are connected to each other via the hanging metal fittings 19a. Further, the upper end of the cord member 22 is connected to the retracting device 21a.

As shown in FIG. 6, the span adjusting device 24
Are installed at both ends of the base unit 20, respectively. Figure 7
As shown in FIG. 7, the span adjusting device 24 is provided with a support portion 24 a that projects toward the steel frame column 11. The steel frame pillar 11 can be pushed and supported by the supporting portion 24a by a hydraulic jack or the like provided in the span adjusting device 24.

Erection garter 20a of the base 20
A plate material 20b serving as a scaffold is laid on the entire upper surface. A handrail 27 serving as a fence is installed on the base unit 20. A suspended floor 13b, which serves as a scaffold, is installed below the mega truss 13. Also, Mega truss 1
A handrail 13c, which serves as a fence, is installed on the upper part of the unit 3.
Further, as shown in FIGS. 7 and 9, a deck plate 17 serving as a scaffold is laid on the entire surface of each layer of the steel frame pillar 11. FIG. 9 is a plan sectional view showing the steel column 11 and the base portion 20 in FIG. 7.

Further, as shown in FIG. 3, the rail 23 of the lift-up system 2 bridges the ends of the six beam installation positions 3 arranged in parallel so that the beam installation positions 3 are arranged in the parallel direction ( It is arranged so as to extend along the arrow Y2). The two rails 23 are parallel to each other. The rail 23 is installed along the horizontal direction.

As shown in FIGS. 5 and 6, the rail 23
Are installed above the brackets 15 provided inside the opposing steel frame columns 11. As shown in FIG. 6, the bracket 15 is a member that joins the joint 13 a of the mega truss 13. The rail 23 is fixed to the upper surface of the bracket 15 by, for example, bolting. As shown in FIG. 10, the bracket 15 is provided with a reinforcing plate 16 that reinforces the strength of the bracket 15. Figure 1
Reference numeral 0 is a front view of a main portion showing an X circle portion in FIG. 6.

As shown in FIG. 10, a slide base 25 is provided below the end of the base 20. The slide base 25 is slidably mounted on the rail 23 along the extending direction of the rail 23. As a result, the base portion 20 is movable along the extending direction of the rail 23.

As shown in FIG. 11, the slide base 25
Are fixed to the two erection garters 20a of the base unit 20, respectively. That is, two slide bases 25 are provided at each end of the base unit 20. FIG. 11 is a side sectional view showing the base portion 20 and the mega truss 13 in FIG.

As shown in FIG. 11, a push-pull device 26 for pushing and pulling the base portion 20 on the rail 23 is installed on the rail 23. The push / pull device 26 includes a telescopic device 26a such as a hydraulic cylinder device. One end of the expansion / contraction device 26 a is connected to one of the two slide bases 25 provided at the end of the base unit 20. In addition, a clamp 26b for gripping the rail 23 is provided at the other end of the telescopic device 26a.
(26c) is provided. In addition, in FIG.
The clamp 26b shows the position of the clamp when the telescopic device 26a is contracted, and the clamp 26c shows the position of the clamp when the telescopic device 26a is extended.

Next, a method of arranging the mega truss 13 at the beam installation position 3 by the lift-up method of the first embodiment will be described.

First, as shown in FIG.
The base part 20 is arranged on the mega truss 13 in the ground assembly gantry 4 by sliding along the slide direction Y2.
In order to slide the base portion 20, first, as shown in FIG. 11, the push / pull device 26 is installed on the side where the base portion 20 is to be slid (the right side in FIG. 11). Push-pull device 26
Are installed on each of the two rails 23 shown in FIG.

Next, as shown in FIG. 11, the push-pull device 2
Clamp 26c with the telescopic device 26a of No. 6 extended
The rail 23 is gripped by. In this state, the expansion / contraction device 26a is contracted. This allows the slide base 25
Slides on the rail 23 in the sliding direction (to the right in FIG. 11), and the base portion 20 is moved in the horizontal direction. That is, the rail 23, the slide base 25, and the push / pull device 26 are
It is a moving means for moving the base portion 20 (including the lift-up device 21) in the horizontal direction.

Thereafter, the grip of the clamp 26b is released,
The expansion / contraction device 26a is again extended. In this state, the rail 23 is gripped by the clamp 26c, and the telescopic device 26a is contracted again. By repeating the above operation, the base unit 20 is horizontally moved onto the mega truss 13 in the ground assembly gantry 4.

Next, as shown in FIG.
Is lifted in the lift-up direction Y1. Mega truss 1
In order to lift 3 in the lift-up direction Y1, first, as shown in FIG. 7, the rope members 22 are attached to both ends of the support member 19 provided above the mega truss 13 via the hanging metal fittings 19a.
Connect the lower ends of.

Thereafter, as shown in FIGS. 6 and 7, the hydraulic cylinder of the retracting device 21a is operated by the hydraulic pump unit 21b on the base 20. As a result, the cord members 22 are pulled upward by the retracting devices 21a (total of four units) of the lift-up device 21 provided on the base portion 20.

By pulling up the cord member 22, the mega truss 13 is lifted in the lift-up direction Y1 as shown in FIG. At a position lower than the height of the beam installation position 3, pulling up of the cord member 22 is stopped, and the cord member 22 is locked by the fixing pin of the retracting device 21a, so that the cord member 22 is retracted.
Fixed to. As a result, the mega truss 13 is fixed in a suspended state. That is, the retracting device 21a is a fixing unit that fixes the mega truss 13 in a suspended state.

Next, as shown in FIG.
In a state in which the is lifted and fixed, the base unit 20 is slid along the sliding direction Y2 to convey the mega truss 13. The method of sliding the base unit 20 is the same as the method described above. The base unit 20 is a suspended mega truss 13
Is slid over the beam installation position 3 for arranging.

Next, as shown in FIG. 6 and FIG. 7, the span adjusting devices 24 provided at both ends of the base 20 are actuated, and the steel frame columns 11 are supported by the supporting portions 24a near the beam installation position 3. Press to support. At this time, from the bracket 15 provided on one of the steel columns 11 to the other steel column 1
The pushing degree of the support portion 24a is adjusted so that the distance to the bracket 15 provided in the first position corresponds to the bridging width of the mega truss 13.

Then, the cord member 22 is pulled up by the retracting device 21a of the lift-up device 21 provided on the base 20. As a result, the mega truss 13 is slid upward and placed at the beam installation position 3.

As described above, according to the lift-up system 2 and the lift-up construction method of the first embodiment,
The mega truss 13 is fixed in a suspended state by the retracting device 21a of the lift-up device 21, and the base 2
Since 0 is moved in the horizontal direction, the mega truss 13 is transferred from the position (position of the ground assembly gantry 4) hoisted by the lift-up device 21 to the beam installation position 3 at a position different from the hoisting position in plan view. To be done. Therefore, unlike the conventional case, the mega truss 13 can be arranged at each of the six beam installation positions 3 without installing a lift-up device above each of the six beam installation positions 3.

Therefore, the number of lift-up devices installed can be reduced as compared with the prior art, so that an increase in equipment cost can be suppressed and the beam can be rationally constructed. Further, since the number of lift-up devices to be installed can be reduced, it is possible to shorten the period for removing the lift-up devices as compared with the conventional case.

Further, when the mega truss 13 is conveyed, the retracting device 21a of the lift-up device 21 fixes the mega truss 13 in a suspended state, so that the mega truss 13 can be stably conveyed.

Further, the base unit 20 has a span adjusting device 2
4 is provided, the supporting portion 24a of the span adjusting device 24 can support the steel column 11 near the beam installation position 3 and adjust the distance between the opposing steel columns 11. As a result, a space corresponding to the bridging width of the mega truss 13 can be reliably ensured between the brackets 15 provided on the opposing steel frame columns 11, respectively.

Therefore, unlike the conventional case, the mega truss 1
Even if the beam length of 3 is not set sufficiently shorter than the bridging width of the mega truss 13, the mega truss 13 can be lifted and placed between the brackets 15. Therefore, Mega truss 13
Since the mega truss 13 having a length substantially equal to the straddle width can be lifted up and placed exactly at the beam installation position 3, the beam can be constructed more rationally.

Further, since the lift-up device 21 and the span adjusting device 24 are provided on the single base 20, the lift-up function of the mega truss 13 and the steel column 11 are provided.
Since the distance adjustment function is integrated, it does not require a large installation space. Also, the bracket 15
Since the reinforcing plate 16 is provided on the base plate 20, the base part 20 can be stably supported by the bracket 15.

In the first embodiment, the lift-up device 21 is provided with the retracting device 21a, but the present invention is not limited to this, and a rack-and-pinion type, PC strand or wire is used. Needless to say, various well-known lift-up devices such as a lift-up device can be applied.

Further, the slide base 25 below the base unit 20 is placed on the rail 23, and the base unit 20 is slid by the push-pull device 26. However, the present invention is not limited to this, and the base unit 20 may be used, for example. A configuration may be adopted in which wheels are provided below the portion 20 to travel on rails, and the means for moving the base portion 20 in the horizontal direction is not particularly limited.

Further, although the construction is such that the steel frame columns 11 are pushed and supported by the supporting portions 24a by the hydraulic jacks provided in the span adjusting device 24, the present invention is not limited to this, and the distance between the opposing steel frame columns 11 is not limited to this. Any configuration that can adjust

The lift-up system 2 has a base 2
Two 0s are provided, but the configuration is not limited to this, and one base 20 may be provided, or three or more may be provided.

Further, the mega trusses 13 are arranged at six different positions in plan view in parallel at substantially equal intervals so as to be parallel to each other, and at substantially the same height position. The number of mega trusses 13 and the layout relationship are not particularly limited to the above example.

Although the example of constructing the mega truss 13 has been described, it goes without saying that the lift-up system 2 and the lift-up construction method of the first embodiment can be applied to the construction of other conventionally known types of beams. Is.

The rail 2 installed along the horizontal direction
Although the base unit 20 is configured to move in the horizontal direction on the above-described structure 3, the rail unit 23 may be installed so as to be tilted and the base unit 20 may be moved along the tilt direction. Also in this case, since the beam can be transported to different positions in plan view by moving the base portion 20 on the rail 23, the same effect as that of the lift-up system 2 can be obtained.

[Second Embodiment] FIGS. 12 and 13
As shown in FIG. 5, the lift-up system 2 ′ of the second embodiment includes a lift-up unit U instead of the two base parts 20 in the lift-up system 2 of the first embodiment. It is equipped with it. Figure 12
FIG. 13 is a side sectional view of an essential part showing an application example of the lift-up system 2 ′.

The lift-up unit U is provided with two base parts 20 in the first embodiment and a stage 28 provided so as to bridge between the two base parts 20. The stage 28 is made of, for example, a steel material, and as shown in FIG. 12, a material 29 can be placed on the stage 28 or a mini crane or the like (not shown) can be installed.

The base portions 20 are arranged in parallel with each other along the beam bridging direction at the beam installation position 3 (vertical direction in FIG. 12). As shown in FIGS. 12 and 13, the distance between the two bases 20 is equal to the two beam installation positions 3.
Is equal to the distance between.

Further, as shown in FIG. 13, of the six beam installation positions 3 arranged in parallel, below the two center beam installation positions 3, the ground assembly gantry 4'is installed on the mega truss 12. Has been done. On the ground assembly gantry 4 ', a mega truss 13 is held in an upright state along the beam bridging direction at the beam installation position 3 (not shown).

In order to arrange the mega truss 13 at the beam installation position 3 by the lift-up system 2 ', first, the lift-up unit U is slid in the sliding direction Y2, and the two base parts 20 are fixed to the ground assembly gantry 4'. Mega truss 13 in
Move up. The slide method is the same as that of the above-mentioned first embodiment. After sliding, as shown in FIG.
The two mega trusses 13 are respectively lifted in the lift-up direction Y1 by the lift-up device 21 of the base unit 20.

The two mega trusses 13 are fixed in a suspended state, and the lift-up system 2'is slid along the sliding direction Y2 to set the two base parts 20.
Are moved above the beam installation position 3, respectively. The span adjustment device 24 adjusts the distance between the opposite steel-framed columns 11, and then the lift-up device 21 pulls up the mega truss 13 to place it at the beam installation position 3.

As described above, according to the lift-up system 2'and the lift-up construction method of the second embodiment, the same effects as those of the first embodiment can be obtained, as a matter of course. Since the two mega trusses 13 can be transported at one time by the up unit U, the time required for constructing the mega truss 13 can be further reduced as compared with the first embodiment.

Since the lift-up unit U is provided with the stage 28, the stage 28 can be used as a work scaffold, the material 29 can be placed on the stage 28, or a mini crane can be installed. be able to.

Further, since the ground assembly gantry 4'is installed below the two center beam installation positions 3, the ground assembly gantry 4'is installed below the two end beam installation positions 3 '. Compared with the above, the distance that the lift-up unit U travels between above the ground assembly gantry 4 ′ and above the beam installation position 3 becomes relatively short. Therefore, the time required for constructing the mega truss 13 can be further reduced.

In the second embodiment, the lift-up unit U has two base parts 20, but three or more base parts 20 are connected in parallel. Needless to say,

[0069]

According to the first aspect of the present invention, unlike the prior art, the beams can be installed at different positions in plan view without installing a plurality of lift-up devices at different positions in plan view. Therefore, it is possible to reduce the number of lift-up devices installed, suppress an increase in equipment costs, and perform beam construction rationally. In addition, it is possible to shorten the construction period for removing the lift-up device that is temporarily installed on the body. Further, since the beam is fixed while being lifted by the lift-up device, the beam can be stably transported. The above is the beam installation position of the opposite steel column
Installed on the bracket where the beam connections are joined
Move the base part equipped with the lift-up device to the rail
It can be realized by

According to the second aspect of the invention, unlike the conventional case, when the beams are arranged at different positions in plan view,
There is no need to install a plurality of lift-up devices at different positions in plan view. Therefore, it is possible to reduce the number of lift-up devices installed, suppress an increase in equipment costs, and perform beam construction rationally. In addition, it is possible to shorten the construction period for removing the lift-up device that is temporarily installed on the body. Further, the beam can be fixed in a suspended state by the fixing means, so that the beam can be stably transported. The above is the beam installation position of the opposite steel column
Installed on the bracket to which the beam joint is joined
Lifted-up device, moving means and fixing means on the rail
Can be realized by moving the base part equipped with
It

According to the third aspect of the invention, the opposing iron
At the beam installation position between the brackets provided on the bone columns, it is possible to reliably secure a space for the beam spanning width. Therefore, a beam having a length substantially equal to the span of the beam can be hoisted and accurately arranged at the beam installation position, and the beam can be constructed more rationally.

[Brief description of drawings]

FIG. 1 is a front view showing a structure constructed by a lift-up method according to a first embodiment of the present invention.

FIG. 2 is a front sectional view showing an application example of the lift-up system according to the first embodiment to which the present invention is applied.

FIG. 3 is a plan sectional view of the same.

FIG. 4 is a side sectional view of the same.

FIG. 5 is a plan view showing an installation portion of a base unit in FIG.

FIG. 6 is a front view of the same.

FIG. 7 is a front view of essential parts showing a steel frame column, a lift-up system, and a mega truss in FIG.

FIG. 8 is a side sectional view showing the lift-up device and the mega truss in FIG.

9 is a plan sectional view showing a steel frame column and a base part in FIG. 7. FIG.

FIG. 10 is a front view of relevant parts showing an X circle portion in FIG. 6;

FIG. 11 is a side sectional view showing a base portion and a mega truss in FIG.

FIG. 12 is a plan sectional view showing an application example of the lift-up system according to the second embodiment of the present invention.

FIG. 13 is a side sectional view of the same.

[Explanation of symbols]

2 Lift-up system 3 Beam installation position 11 Steel columns (frames, columns) 13 Mega truss (beam) 20 base 21 Lift-up device 21a Retracting device (fixing means) 23 Rails (transportation means) 24 Span adjustment device (distance adjustment means) 25 Slide base (moving means) 26 Push / pull device (moving means)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-11-81684 (JP, A) JP-A-2000-110359 (JP, A) JP-B 64-9431 (JP, B1) JP 2942054 (JP, B2) ) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04G 21/14 E04B 1/35

Claims (3)

(57) [Claims] 1. A beam for lifting a beam by a lift-up device
It is a lift-up method that is installed at the installation position, and the joint of the beam is joined to the beam installation position of the opposing steel frame column.
A racket is provided, rails are installed in parallel on opposite brackets, a base part that moves on the parallel rails is installed, and a beam is suspended by a lift-up device provided on the base part.
After fixing in the raised state, move the base part to the rail.
The lift-up method is characterized by placing the beam at the beam installation position . 2. A lift-up system including a lift-up device for hoisting a beam and arranging it at a beam installation position, the lift-up system being provided at a beam installation position of a steel column facing each other, and a beam joint being connected.
The rails installed in parallel on the bracket to be fitted and the rails that run in parallel, and the lift-up device is installed
A base portion that is, a moving means for moving the base unit on the track, fixed in a state of lifting the beam by the lift-up device
The fixing means is provided with the fixing means and the beam is lifted by the lift-up device.
After fixing with the
A lift-up system that moves and positions the beam at the beam installation position . 3. An opposing steel frame column is pushed onto the base part to
A distance adjusting means for adjusting the distance between the two is provided, and in a state where the opposing steel frame columns are pushed by the distance adjusting means.
Characterized by placing beams between opposite brackets
The lift-up system according to claim 2 .