JP2002275830A - Scaffold device for subsidiary work and subsidiary work method of elevated bridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a subsidiary work of an elevated bridge having high safety while being inexpensive, eliminating a cause of traffic congestion, and improving workability. SOLUTION: This scaffold device comprises a support stand 20 used when appending and executing an ancillary execution object such as a sound insulating wall on the elevated bridge, and detachably fixed to a handrail, and a scaffold frame body 30 having a scaffold plate 31 movably connected in parallel to this support stand 20 via a connecting member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffold for attaching a viaduct to be used for maintenance and inspection of a bridge side portion for a viaduct such as a road and a railway, and for installation work of a sound insulation wall and a decorative panel. The present invention relates to an apparatus and a construction method.

[0002]

2. Description of the Related Art In a viaduct such as a road or a railway, a bridge is erected and supported on a plurality of spars laid in series, and a running surface of an automobile or a railway vehicle is formed on an upper surface of the bridge. General. By the way, on the side of the viaduct, there may be a case where it is necessary to provide incidental works such as an iron pole for a lighting lamp, a sound insulating wall, and a decorative outer panel depending on the surrounding conditions. Such an ancillary construction is attached to, for example, a side of a viaduct while being supported on a railing projecting upward as a protective fence.

[0003] Therefore, if it is intended to attach an additional work to the viaduct, it is impossible to perform the work only from the road surface side of the viaduct, and it is necessary to perform various operations from the outside of the railing. Therefore, it is conceivable to assemble a scaffold from the ground at the construction position on the side of the viaduct. Generally, the viaduct may be 10 m or more above the ground, and may reach several tens of meters at high places. It is virtually impossible to provide a scaffold over long distances.

[0004] Therefore, conventionally, an appropriately shaped hanging scaffold is fixed on a railing and used as a scaffold for construction work (first conventional method), or a crane truck or other high work vehicle is arranged on the ground side. Then, a work scaffold provided at the tip of the work arm is moved to a construction position of a collateral work on a railing, and work is performed from the work scaffold (second conventional method). In recent years, a special work vehicle configured so that an arm goes around the outside of a railing (commonly called an over fence work vehicle)
It has also begun to park the over-fence work vehicle on the road surface of the bridge, deploy the arm, and work from a work scaffold provided at the end of the arm (third conventional method).

[0005]

By the way, in the above-mentioned first conventional method of fixing a suspended scaffold to a railing, after the construction at the installation site is completed, the suspended scaffold is once completely removed from the railing. Thereafter, the work must be rebuilt at the next work place, and there is a problem that the construction efficiency is extremely poor.

In the above-mentioned second conventional method, in which an aerial work vehicle is parked on the ground side beside the viaduct, when the ground side is a side road, the side road is constructed. It must be closed during the period, which causes inconvenience of traffic congestion. In addition, there is not always a space on the ground side corresponding to the construction position where the aerial work vehicle can be parked, and there is a disadvantage that versatility is poor.

Further, in the third conventional method using an over-fence work vehicle, the work must be performed by stopping the over-fence work vehicle on the road surface on the viaduct side. In addition to the drawback, the overfence work vehicle is extremely expensive, and even if the vehicle is rented, the rental fee is expensive and the work cost increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an advantage of being able to safely and efficiently carry out a viaduct installation work without affecting the ground. The purpose of the present invention is to provide a device and a method of installing works.

[0009]

According to the first aspect of the present invention,
A scaffolding device for additional work of a viaduct used for attaching and constructing an incidental work piece on a side portion of the viaduct, and a support base detachably fixed to the side part of the viaduct, and a connecting member connected to the support base. And a scaffold frame movably connected in the direction in which the viaduct extends, and the scaffold frame is connected to the support base at a position outside the viaduct. Things.

According to a second aspect of the present invention, in the first aspect of the present invention, the support gantry is detachably fixed to a railing provided on a side portion of the viaduct.

According to these inventions, the scaffolding frame is supported by the supporting frame via the connecting member in a state where the supporting frame is fixed to the side portion or the railing of the viaduct. At the outer position, it is connected to the support base. Therefore, the worker can be located on the outside position of the viaduct by being placed on the scaffold plate of the scaffold frame, whereby it is possible to construct the incidental work from outside the viaduct. .

Since the scaffolding frame is movable with respect to the support base via the connecting member, the scaffolding frame is moved to the next position when the work in the set work area is completed. It only has to be moved to the work area. By doing so, it becomes possible to expand the workable range of the scaffolding frame, and every time work in one work area is completed, the scaffold is dismantled and reconstructed in the next work area. The inconvenience of the scaffold is eliminated, the construction cost of the scaffold is reduced, and the working efficiency is improved.

According to a third aspect of the present invention, in the second aspect of the present invention, the support gantry includes a frame including a fixing portion having a shape extending from the inner side surface of the railing to the outer side surface across the upper end thereof. It is characterized by the following.

According to the present invention, the support gantry can be easily and stably installed by effectively utilizing the shape of the row projecting upward. Further, since the support base is mounted on the rail by simply hanging down the rail so as to cover the fixing portion, workability of mounting the support base on the rail is improved and efficiency is improved.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the scaffold frame has an upper side and a side opposed to the support gantry connecting the connecting member to the support gantry. It is characterized by being suspended by being connected via a wire.

According to the present invention, a floor is provided on the scaffold frame by suspending the scaffold frame on the support frame.
Compared to the structure in which the supporting carriage is made to run on the floor, the connecting structure of the scaffold frame to the supporting frame is simplified, which contributes to a reduction in equipment cost.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the connecting member extends on one side of the support base and the scaffold frame in the longitudinal direction of the viaduct. And a roller member provided on the other side so as to be guided by the rail member so as to be relatively movable with respect to the rail member.

According to the present invention, the scaffold frame moves smoothly with respect to the support base by the roller member being guided by the rail member and rotating around the axis. Therefore,
The scaffolding frame can be moved with a smaller force than when the scaffolding frame is simply connected to the support base in the sliding state, and the scaffolding frame is moved to change the work area Is more efficient.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, the rail member is provided on a scaffold frame.

According to the present invention, it is possible to save the rail members when the support base is continuously provided along the side of the viaduct. That is, when the rail members are provided on the support gantry side, when the support gantry is continuously provided, the rail members must be provided on each support gantry, but by providing the rail members on the scaffold frame, all the rail members are provided. It is possible to correspond to the support gantry, and it is possible to use only one, so that the cost of parts is reduced and the construction becomes easy.

According to a seventh aspect of the present invention, in the sixth aspect of the invention, the rail member includes an upper rail member provided on an upper portion of the scaffold frame and a lower portion provided below the upper rail member. On the other hand, the supporting frame includes an upper roller member that supports the upper rail provided on the top or upper portion, and a lower roller member that supports the lower rail member provided below. Wherein the lower roller member is attached to the support frame so as to receive a moment directed toward the support frame of the scaffold frame with the contact point between the upper rail member and the upper roller member as a fulcrum. Is what you do.

According to the present invention, in the state where the upper rail member is supported by the upper roller member, the scaffold frame is directed toward the support base with the contact point between the upper rail member and the upper roller member as a fulcrum. Although a moment acts, the moment is received by the lower roller member via the lower rail member, so that the scaffold frame is prevented from inconvenience such as tilting, and the upright posture is stabilized.

According to an eighth aspect of the present invention, in the invention according to any one of the first to seventh aspects, the scaffold frame includes:
A stopper is provided for restricting relative movement of the scaffold frame with respect to the support frame.

According to the present invention, by controlling the movement of the scaffold frame by operating the stopper in a state where the working area of the scaffold frame for the side portion of the viaduct is set.
A trouble such as the scaffolding frame moving on its own due to wind pressure or the like does not occur, and safety is improved, and workability is also improved.

According to a ninth aspect of the present invention, in the invention according to any one of the first to eighth aspects, the scaffold frame comprises:
A net is stretched so as to surround the scaffold frame.

According to the present invention, even if equipment materials such as bolts and nuts or construction tools such as a hammer and a screwdriver fall by mistake while working on the scaffold plate, the scaffold frame is not affected by the same. Since the net is stretched around the scaffolding frame, equipment materials and construction tools that have been accidentally dropped are caught by this net, and this can cause a risk of falling equipment materials etc. just below the work area. The situation is reliably avoided.

According to a tenth aspect of the present invention, there is provided a supporting frame mounting step of mounting a plurality of supporting frames in series along a side portion of a viaduct, and a scaffold movably mounted on one of the plurality of supporting frames in a direction in which the supporting frames are arranged. A scaffolding frame installation process of installing a scaffolding frame, a moving process of moving the scaffolding frame to the next support frame during or before and after construction using the scaffolding frame, and after completion of this moving process. And a support gantry transfer step of transferring the support gantry behind the scaffold frame to the front of the scaffold frame.

According to the present invention, for the construction within the range where the support frames are juxtaposed, the scaffold frame is sequentially moved from the end to each of the support frames, and the predetermined work is performed on the side of the viaduct. Can be constructed. Then, in anticipation of the completion of construction within the above range, by moving the support frame behind the scaffold frame to the front of the scaffold frame, the scaffold frame is moved to the transferred support frame. The construction of the span next to the side of the viaduct can be performed.

[0029]

1 and 2 are perspective views showing a first embodiment of a scaffolding device according to the present invention. FIG.
FIG. 2 shows a state in which the support gantry and the scaffold frame are separated from each other, and FIG. 2 shows a state in which the support gantry on which the scaffold frame is mounted is attached to the railing. FIG. 3 is FIG.
4 is a view as seen from the direction of the arrow A, and FIG. 4 is a view as viewed from the direction of the arrow B in FIG. In addition,
In FIG. 4, in order to clarify the relative positional relationship between the support base and the scaffold frame, the two are slightly displaced from the directly facing positions.
Further, in this embodiment, a row K projecting upward is formed on the side of the viaduct.

As shown in these figures, the scaffold device 10
Is a support frame 20 detachably fixed to the rail K, a scaffold frame 30 movably connected to the support rack 20 in the direction in which the rail K extends, and the support frame 20 is attached to the rail K. Supporting frame fixing structure 40 for fixing, and scaffold frame 3
Connection structure 50 for movably connecting the support frame 20 to the support base 20
And a net extending structure 60 for extending the net to the scaffolding frame 30.

The support gantry 20 is a state in which a plurality of (three in this embodiment) three-tooth comb frames 21 mounted on the row K face each other so that their side surfaces are parallel to each other. , Two angle members 27, that is, an upper angle member 27a and a lower angle member 27b connected in series.

Each of the comb-shaped frames 21 is a road-side support 2 composed of a square pipe corresponding to the wall surface of the rail K on the road surface K1 side.
2, an outer support 23 made of a square pipe corresponding to the outer wall surface of the railing K, and an overhang support 24 made of a square pipe arranged in an overhang shape further outside the outer support 23. And Road surface support 2
2 and the outer support 23 are dimensioned to be approximately the same length, whereas the overhang support 24 is dimensioned slightly longer.

With the lower ends of the columns 22, 23, and 24 at the same height level, the tops of the road-side columns 22 and the outer-side columns 23 and the positions slightly below the tops of the overhang columns 24 are welded. The comb-shaped frame 21 is integrally connected to the upper beam 25 made of a square pipe, and a part slightly above the intermediate position in the vertical direction is integrally connected to the intermediate beam 26 made of the square pipe by welding. Is formed.

The above-mentioned road-side support 22 is provided on the road surface K1
The angle is set so as to be slightly oblique so as to follow the inclination of the side wall surface.
3 is gradually increased downward. And such road surface side support 22
, The outer side support 23 and the intermediate beam 26 form an inverted U-shaped frame 20a according to the present invention. By mounting the inverted U-shaped frame 20a on the row K, the support gantry 20 is mounted on the row K.

Further, the upper beam member 25 has a short column 28 standing upright at a position near the overhang column 24 on the upper surface thereof. The short support 28 is dimensioned such that the upper end thereof is at the same height level as the upper end of the overhang support 24.

In this comb-shaped frame 21, reinforcing plates 256 are fixed by welding to portions where the upper beam member 25 and the intermediate beam member 26 are joined, and the rigidity thereof is improved to improve the original shape of the comb-shaped frame 21. Retention is ensured.

The upper beam 25 of the support frame 20 includes
A suspension bracket 29 having a through-hole 29a formed on the upper surface of the substantially central portion is fixed by welding. The bracket 29 is used when the support base 20 is suspended by a working machine such as a crane truck. At this time, a hook provided at a tip of a wire for suspension of the working machine is used to penetrate the bracket 29. It is inserted through the hole 29a.

The support gantry fixing structure 40 includes a pair of bolt support brackets 41 welded to both sides of the road-side column 22 below the intermediate beam member 26, and penetrates the bolt support brackets 41 vertically. The locking bolts 42 screwed into the screwed bolt holes, respectively, and abut on the outer surface side of the railing K protruding from the outer surface side support 23 so as to face each of the locking bolts 42. A pair of upper and lower contact protrusions 43 are provided.

The locking bolt 42 has a rail K
Is provided with an abutting disk 42a which is abuttable on the inner surface side of the head. A buffer 44 made of rubber or soft synthetic resin is laminated on the contact surface of the contact disk 42a, and a similar buffer 4 is also provided on the contact surface of the contact protrusion 43.
4 are stacked.

Therefore, by fastening the locking bolts 42 with the inverted U-shaped frame 20a of the support base 20 straddling the row K, the row K can be locked via the cushioning members 44. The support frame 20 is stably mounted and fixed to the high rail K by being pressed and held by the abutment 43 and the contact protrusion 43.

The scaffolding frame 30 is for supporting a scaffolding plate 31 on which an operator stands and performs work, and is surrounded by various frames and has a rectangular parallelepiped shape as a whole. The length (the length in the direction parallel to the column K) is set to be substantially the same as the length of the support base 20.

The scaffolding frame 30 includes a scaffolding plate support frame 32 made of a square pipe and having a rectangular shape in plan view for supporting the scaffolding plate 31, and a support frame 20 of the scaffolding plate support frame 32. Two distant corners, and a suitable place between these corners, and a slight support stand 20 from each corner
And a predetermined number of vertical frames 33 made of square pipes, each of which is erected at a position close to
3, two long horizontal frames 34 made of square pipes extending in parallel with the row K and a square pipe formed on the top of a vertical frame 33 extending in a direction perpendicular to the row. And a number of short horizontal frames 35.

The vertical frame 33 is provided on the scaffold frame 30.
Is connected to the support base 20, and the lower end thereof is
The length is set so as to be slightly lower than the lower end of the scaffold plate support frame 32.
The dimension is set such that the long edge portion on the side where the vertical frame 33 is not erected can sink under the row K in a state where the scaffold frame 30 is connected to the support frame 20.

Accordingly, when the scaffolding frame 30 is connected to the support frame 20, when the perspective view shown in FIG. There is no gap between the rail and the railing K, so that an accident in which the worker falls down through the gap is reliably prevented.

An intermediate horizontal frame 3 having a U-shape in plan view is provided at an intermediate position of each vertical frame 33 so as to surround the scaffold plate 31 by connecting the intermediate positions.
6 between the intermediate horizontal frame 36 and the scaffold plate support frame 32, between the intermediate horizontal frame 36 and the long horizontal frame 34, and between the intermediate horizontal frame 36 and the short horizontal frame 35. The brace 37 is attached in an X shape, whereby the scaffold frame 30 is structurally strong.

The length of the short horizontal frame 35 is set to approximately half the width of the scaffolding plate support frame 32, so that the front end supports the middle portion of the short horizontal frame 35. From the vertical frame 33 in the direction of the support base 20.

The connecting structure 50 for connecting the scaffold frame 30 to the support base 20 includes an upper rail member 51 made of I-shaped steel and extending in the horizontal direction, which is fixed to the lower surface of the distal end of each short horizontal frame 35 by welding. , A lower rail member 52 extending in the horizontal direction, which is made of a C-shaped steel and is fixed to the surface facing the support frame 20 at a substantially intermediate position of the vertical frame 33 by welding.
And an upper rail member 51 on the upper beam member 25 of the support base 20.
And a vertical roller member 53 supporting the lower surface of the upper rail member 51 provided corresponding to the above, and the upper rail member 51 provided on the upper beam member 25 via the upper portion of the overhang support 24 and the short support 28. It comprises an upper horizontal roller member 54 to be clamped, and a lower horizontal roller member 55 provided below the overhanging support 24 so as to correspond to the vertical roller member 53. Vertical roller member 5
3 and the upper horizontal roller member 54 form an upper roller member according to the present invention.

The upper rail member 51 is fixed to the short horizontal frame 35 so that a connecting plate connecting a pair of long flat plates of I-shaped steel is vertical, and the lower rail member 52 is formed of C-shaped steel. It is fixed to the vertical frame 33 so that the long opening surface faces the direction of the support base 20.
Each of the upper rail member 51 and the lower rail member 52 has a length of approximately 1.5 times the length of the scaffold frame 30.
The dimensions are set to be twice as large, so that the scaffolding frame 30 projects outwardly from both sides by the same dimension.

FIG. 5 is a partially enlarged view of FIG. 3 for explaining the support of the upper rail member 51 by the vertical roller member 53 and the upper horizontal roller member 54. As shown in this figure, a vertical roller member 53 includes a roller receiving member 53a having a U shape in a front view, a roller shaft 53b penetrating between side plates of the roller receiving member 53a, and a roller shaft 53b. And a vertical roller 53c rotatably supported around. The lower surface of the upper rail member 51 is supported on the peripheral surface of the vertical roller 53c,
The scaffold frame 30 is supported by the support base 20 so as to be able to move forward and backward by the rotation of the vertical roller 53c around the roller shaft 53b.

The upper horizontal roller member 54 is provided as a pair so as to sandwich the vertical portion of the upper rail member 51, and has a C-shaped roller receiving member 54a in a front view.
It comprises a roller shaft 54b penetrating between the upper and lower plates of the roller receiving member 54a, and an upper horizontal roller 54c rotatably supported around the roller shaft 54b. Since the vertical portion of the upper rail member 51 is sandwiched between the upper horizontal rollers 54c of the pair of upper horizontal roller members 54, the upper rail member 51 supported by the vertical roller 53c is prevented from falling off from the vertical roller 53c. It is surely prevented.

FIG. 6 is a partially enlarged view of FIG. 3 for explaining the support of the lower rail member 52 by the lower horizontal roller member (lower roller member) 55. As shown in this figure,
The lower horizontal roller member 55 has a C-shaped roller receiving member 55a in front view, a roller shaft 55b penetrated between upper and lower plates of the roller receiving member 55a, and a rotatable shaft around the roller shaft 55b. Lower horizontal roller 55 supported by the shaft
c. The installation position of the lower horizontal roller member 55 is set so that the peripheral surface of the lower horizontal roller 55c contacts the bottom plate of the lower rail member 52.

According to the configuration of the lower horizontal roller member 55, the scaffold frame 30 is hung on the support base 20 via the upper rail member 51 and the vertical roller member 53, and the top periphery of the vertical roller 53c. A clockwise moment about the surface as a fulcrum is received by the lower horizontal roller member 55 and the lower horizontal roller 55c via the bottom surface of the lower rail member 52, whereby the scaffold frame 30 is moved to the vertical roller 53c.
Of the scaffold frame 30 can be prevented from rotating around the fulcrum.

The net extending structure 60 is used for the scaffold frame 3.
0 outer surface (surface opposite to the surface facing the support base 20)
And a brace frame 62 for supporting the protection net 63 and a brace frame 62 for supporting the protection net 63.

The net stretching frame 61 is formed in a rectangular shape by combining a pair of long frames 61a and a pair of short frames 61b into a rectangular shape. The short frame 61b is set to be approximately 1.5 times the width of the scaffold frame 30, and the long frame 61a has a length slightly longer than the length of the scaffold frame 30. Is set. A predetermined number of intermediate frames 61c are provided between the pair of long frames 61a, so that the net extending frame 61 is structurally strong.

The net stretching frame 61 is provided with bolts such that a short frame 61b is formed at the upper end of a vertical frame 33 erected at the corner of the scaffolding plate support frame 32 so as to form a rising slope. It is fixed with a stop. Then, the brace frame 62 is erected between a substantially middle position of the vertical frame 33 and a substantially middle position of the short frame 61b, and is fixed by bolting, whereby the scaffolding frame 30 of the net stretching frame 61 is formed. To stabilize the mounting state.

Then, such a frame 61 for net stretching is provided.
A protection net 63 is stretched over the entire surface of the vehicle. According to such a net extending structure 60, the scaffolding frame 30
The fallen object that is going to fall over the upper part is caught by the protective net 63 provided to extend obliquely upward from the scaffolding frame 30, so that the fallen object falls from the viaduct Br toward the ground. Inconvenience is reliably prevented.

In this embodiment, the protective net 63 is formed not only by the net extending frame 61 but also by four surfaces of the scaffolding frame 30 other than the surface facing the high rail K (both sides,
Back and top surfaces), thereby providing a scaffold plate 3
The inconvenience of, for example, accidentally dropping a tool or a construction member during operation on the work 1 is also reliably prevented.

In the present invention, the support frame 20
7 for restricting movement of scaffolding frame 30 with respect to
The stop operation of the stopper 70 prevents the movement of the scaffold frame 30, whereby the set position of the scaffold frame 30 can be stably maintained.

The stopper 70 is shown in FIGS.
As shown in FIG. 2, in the present embodiment, a first protruding plate 71 protruding from a surface of each of the overhanging posts 24 of the support base 20 opposite to the row K, The second projecting plate 72 projecting from the vertical frame 33 so as to face the upper and lower sides with a small gap therebetween, and the first and second projecting plates 71, 72 are mutually penetrated in a state where they overlap each other. A pin 73 is provided. The first projecting plate 71 has a first pin hole 71a for inserting a stop pin 73, and the second projecting plate 72
Also, a similar second pin hole 72a is formed.

The stop pin 73 has a pin body 73a having a diameter slightly smaller than the inside diameter of the first and second pin holes 71a, 72a, and first and second pin holes 73a formed on the top of the pin body 73a. Two pin holes 71a, 72a
And a head 73b having a diameter larger than the inner diameter of the head 73b.

Accordingly, the first projecting plate 71 and the second projecting plate 72
With the first pin hole 7
By inserting the pin body 73a into the 1a and the second pin holes 72a, as shown in FIG. 6, the first and second protruding plates 71, 72 are connected to each other via the stop pin 73, whereby the scaffold is used. The relative movement of the frame 30 with respect to the support base 20 is prevented.

Hereinafter, the operation of the scaffolding device 10 of the present embodiment will be described with reference to FIGS. 1 to 6 as needed based on FIGS. FIG. 7 is an explanatory diagram for explaining the operation of the scaffolding device 10 by exemplifying a case where the sound insulation wall 80 is constructed on the high rail K. FIG. 7B is a state in which the support base 20 is fixed to the row K, and FIG. 8A is a state in which the scaffold frame 30 is suspended toward the support base 20. 8B is a state in which the scaffolding frame 30 is connected to the support base 20, and FIG.
9 shows a state in which the sound insulating wall 80 is being fitted between the sound insulating wall support columns 81, FIG. 9B shows a state in which the two-sound sound insulating wall 80 is constructed, and FIG. 10 shows a state in which the scaffold frame 30 moves by one span. Each state is shown.

Note that in FIGS. 7 to 9, (a) to (b)
(B) is a front view as viewed from the outside of the railing K, and is a side view. FIG.
It is the front view seen from the outside of the high row K.

Incidentally, in the construction of the sound insulating wall 80 described below, the sound insulating wall support column 81 is mounted on the high row K before the scaffolding device 10 is mounted on the high row K. Therefore, the following description based on FIG. 7 to FIG. 10 is based on the assumption that the sound insulation wall 80 is fitted between the sound insulation wall support columns 81 and the bottom of the sound insulation wall support columns 81 is joined to the top of the railing K. It is an example of construction when the scaffolding device 10 is used.

7 to 10, FIG. 7 corresponds to a supporting gantry erection step, FIG. 8 corresponds to a scaffold frame setting step, FIG. 9 corresponds to a moving step, and FIG. Corresponds to the support frame transfer process.

First, in the support frame mounting step, as shown in FIG. 7A, the support frame 20 is hung down toward the rail K by a crane of a working machine such as a crane truck (not shown). At this time, the sound insulating wall support columns 81 are already attached to the railing K, but the inverted U-shaped frame 20a (FIGS. 1 to 3) of the support base 20 covers the railing K from the road surface K1 side of the viaduct. In the case, the sound insulating wall support column 81
Therefore, each inverted U-shaped frame 20a can be passed between the sound insulating wall support columns 81 so as to pass a comb.

Then, the support frame 20 is suspended from the row K by operating the crane, so that the inverted U-shaped frame 20a straddles the row K as shown in FIG. By fastening the locking bolts 42 (FIGS. 1 and 3) in this state, the row K is pressed and clamped between the abutting disk 42a of the locking bolt 42 and the abutting projection 43 of the outer support 23. In this state, the mounting state of the support base 20 with respect to the row K is stabilized.

Subsequently, in the scaffold frame installation step,
As shown in FIG. 8A, the scaffold frame 30 is suspended by a crane toward the lateral position of the support base 20.
In this suspending operation, the scaffolding frame 3
No. 0, the end face of the upper rail member 51 is opposed between a pair of upper horizontal rollers 54c (FIG. 3), and the end face of the lower rail member 52 is once opposed to the lower horizontal roller 55c (see FIG. 8A). Illustrates the scaffolding frame 30 at a position directly above the support frame 20 for convenience of illustration.)

Then, the scaffold frame 30 is moved in parallel toward the support base 20 by operating a crane while maintaining the above-mentioned facing state, so that the upper rail member 51 is moved.
The vertical rail portion is fitted between a pair of upper horizontal rollers 54c and is supported by a vertical roller 53c (FIG. 3), and the lower rail member 52 has a C-shaped opening at the lower horizontal portion. The roller 55c is externally fitted.

In this state, the scaffold frame 30 is attached to the support base 20.
Then, the upper rail member 51 is guided by the rotation of the vertical roller 53c around the roller shaft 53b, and the lower rail member 52 is guided by the rotation of the lower horizontal roller 55c around the roller shaft 55b. While moving in the direction of the support base 20. Then, as shown in FIG. 8B, the scaffold frame 30 is directly opposed to the support base 20.

In a state where the scaffold frame 30 faces the support frame 20, as shown in FIG. 6, the first and second projecting plates 71 and 72 of the stopper 70 which are vertically opposed to each other. And stop pins 73 in the second pin holes 71a and 72a.
The scaffolding frame 30 is attached to the support base 2
The movement is stopped with respect to 0 ((b) in FIG. 8). In this state, the scaffold frame 30 is in a state of horizontally crossing the three sound insulating wall support columns 81.

Next, in the moving step, FIG.
As shown in the figure, the noise barrier 8 once suspended by a crane
0 is suspended between the pair of sound insulating wall support columns 81. By suspending the two sound insulating walls 80, as shown in FIG. 9B, the two sound insulating walls 80 are fitted between the sound insulating wall support columns 81 at the front position of the scaffold frame 30. ing. In this state, the worker placed on the scaffold plate 31 performs the work of fixing the sound insulation wall 80 to the sound insulation wall support column 81.

When the work of fixing the two sound insulating walls 80 to the sound insulating wall support columns 81 is completed, the stop pins 73 inserted through the first and second projecting plates 71 and 72 are completed.
After pulling out (FIG. 6), the scaffold frame 30 is moved by two spans of the sound-insulating-wall support column 81. This movement is caused by the upper and lower rail members 51 and 52 being moved by the vertical rollers 53.
c, upper horizontal roller 54c and lower horizontal roller 55c
This movement operation is very easy even if it is manually performed because the movement is performed while being guided by the rotation of.

By such a moving operation, the scaffolding frame 30
Is in a state of being translated from the support base 20 as shown in FIG. In the example of FIG. 10, the scaffold frame 30 is moving toward the right side of the support gantry 20. By the movement of the scaffolding frame 30, the scaffolding frame 30 is moved to the sound insulating wall 80.
Are placed directly on the two sound insulating wall support struts 81 to which the sound insulating wall 80 is not mounted, so that the sound insulating wall 80 is interposed between the adjacent left and right sound insulating wall support struts 81 without remounting the support base 20.
Can be mounted.

Since the scaffolding device 10 of the present embodiment can cover six spans of the sound insulating wall 80 by moving the scaffolding frame 30 to the left and right, the scaffolding is provided every seven spans over the entire construction section. The support base 20 of the apparatus 10 is set
Is fixed to the support base 20 in advance.
It is possible to continue the construction without changing the construction, and it is possible to speed up the construction related to the railroad K.

When the construction section is long, the support frame transferring step according to the present invention is executed. Specifically, at least two support frames 20 are attached to the railing K at predetermined intervals of the sound-insulating-wall support columns 81, and when the construction of the sound-insulating wall 80 corresponding to the last support frame 20 is completed, the timing is completed. The first support gantry 20 is removed from the railing K, and the removed support gantry 20 is placed next to the last support gantry 20. As shown in FIG. 10, by sequentially transferring the support gantry 20, the scaffold frame 3 is attached to the transferred support gantry 20 (the support gantry 20 on the right side in FIG. 10).
The railroad K using the scaffolding frame 30 by moving 0
The construction of a long construction section can be performed quickly without interrupting the construction work. This support frame transfer process has a large role to play in speeding up the construction, and thus shortening the construction period.

As described in detail above, the scaffolding device 10 of the present embodiment is used when ancillary works such as the sound insulating walls 80 are attached to the viaduct K of the viaduct.
And a scaffold frame 30 having a scaffold plate 31 movably connected in parallel to the support cradle 20 via a connecting member. The scaffolding frame 30 is supported by the supporting frame 20 via the connecting structure 50 with the supporting frame 20 fixed to the column K, so that the scaffolding frame 30 is positioned outside the column K at the position outside the column K. Can be connected. Therefore, the worker can use the scaffold plate 31 of the scaffold frame 30.
Is placed on the outside of the railing K, whereby it is possible to construct the incidental work from the outside of the railing K.

The scaffold frame 30 is connected to the connecting structure 50.
Can be moved with respect to the support base 20 through the work area, so that when the work in the set work area is completed,
By moving the scaffold frame 30 to the next work area, the workable range of the scaffold frame 30 can be expanded, and the scaffold is disassembled every time work in one work area is completed. The inconvenience of the conventional scaffold, such as rebuilding in the next work area, is eliminated, and the construction cost of the scaffold can be reduced and the work efficiency can be improved.

Then, the support frame 20 is formed so that the inverted U-shaped frame 2 formed in an inverted U-shape in side view so as to straddle the row K.
0a, the support frame 20 is
Simply put the lower surface opening of the character frame on the high
, And the workability of the mounting work of the support gantry 20 on the row K is improved.

Further, since the scaffolding frame 30 is movably suspended from the supporting frame 20 via the connecting structure 50, the connecting structure of the scaffolding frame 30 to the supporting frame 20 is simplified, and equipment is provided. This can contribute to cost reduction.

The connecting structure 50 is connected to the upper rail member 51 and the lower rail member 5 provided on the scaffold frame 30.
2 and a vertical roller member 53, an upper horizontal roller member 54, and a lower horizontal roller member 55 provided on the support frame 20 corresponding to these, so that each of the rail members 51, 52 is formed of the roller members 53, 54, 55. The scaffold frame 30 can move smoothly with respect to the support gantry 20 by being guided by the rotation about the axis and moving. Therefore, it is possible to move the scaffolding frame 30 with a small force as compared with a case where the scaffolding frame 30 is simply connected to the support frame 20 in the sliding contact state, and it is possible to move the scaffolding frame 30 for changing the working area. The work of moving the frame 30 can be performed efficiently.

Further, since the scaffolding frame 30 is provided with the stopper 70 for regulating the relative movement of the scaffolding frame 30 with respect to the support frame 20, the scaffolding frame 3 with respect to the railroad K is provided.
By controlling the movement of the scaffold frame 30 by operating the stopper 70 in a state where the work area is set to 0,
The problem that the scaffolding frame body 30 moves freely by wind pressure or the like does not occur, and safety and workability can be improved.

Further, since the protective net 63 is stretched around the scaffolding frame 30 so as to surround the scaffolding frame 30, equipment materials such as bolts and nuts during work on the scaffolding plate 31, Even if a construction tool such as a hammer or a driver is accidentally dropped, the construction tool is caught by the protection net 63, whereby a dangerous situation caused by dropping of equipment materials or the like directly below the work area can be reliably avoided.

FIG. 11 is a side view showing a second embodiment of the scaffold device 10a according to the present invention. In the first embodiment, the scaffold frame 30 employs a so-called upper suspension method in which the scaffold frame 30 is suspended by a vertical roller member 53 provided on the upper surface of the upper beam member 25 via the upper rail member 51. The scaffolding device 10a according to the second embodiment is different from the above-described hanging method in that a vertical roller member 53 is provided as shown in FIG.
A pair of upper horizontal roller members 54 is provided at the upper end of the overhanging support 24 so as to protrude outward, and the upper rail member 51 is supported by the vertical roller member 53 and the upper horizontal roller member 54, so-called horizontal suspension. The method is adopted. By doing so, it is possible to reduce the vertical dimension of the overhanging support 24 and the vertical dimension of the scaffold frame 30, thereby reducing the equipment cost of the scaffolding device 10.
FIG. 12 is a side view showing a third embodiment of the scaffold device 10b according to the present invention. This embodiment is applied to a case where the bridge K is not provided in the viaduct Br,
A support frame 200 is provided on a side surface of a viaduct Br to support a scaffold frame, and a road surface frame 210 mounted on a road surface K1 while being detachably connected to the rectangular frame. And a weight 220 mounted on the road surface-side base 210. Therefore, the scaffold frame 30, the connecting structure 50, and the net extending structure 60 are configured in the same manner as in the previous embodiment (see FIG. 12).
Here, the first embodiment is illustrated).
No. 0 has no inverted U-shaped frame 20a, and instead employs a rectangular frame 201 having a rectangular shape in a side view.

The rectangular frame 201 includes a road-side support 22a corresponding to the road-side support 22 and orthogonal to the road surface K1, an overhang support 24, an upper beam 25 and an intermediate beam 26 similar to the above. , And a lower beam member 25a erected between the lower ends of the road surface side support 22a and the overhang support 24.

[0086] In order to support such a rectangular frame 201, a road-side base 210 is provided which is movable in the direction in which the viaduct Br extends on the road surface K1. The road-side base 210 is a rectangular base frame 2 in plan view.
11, a weir frame 212 provided on the distal end side (left side in FIG. 12) of the basic frame 211 so as to extend in the front-rear direction (direction perpendicular to the paper surface of FIG. 12), and Base frame 213 erected to extend in the direction, and the brace frame 2 bridged between the base frame 213 and the base frame 211.
14 is provided.

A pair of casters 215 in the width direction are provided at the front and rear positions on the back side of the base frame 211, respectively. On the road surface K1 of the viaduct Br, the casters 215 correspond to the casters 215 and Two guide rails 216 extending in the front-rear direction are laid. In the present embodiment, the guide rail 216 is made of U-shaped steel, and the road surface K is formed with the upper opening of the U-shaped steel facing upward.
1 is fixed to the upper surface. Therefore, the road surface side mount 210
Can move back and forth while being guided while the casters 215 are fitted in the grooves of the guide rails 216.

A weight 220 is mounted on the opposite end of the base frame 211 in FIG. The width of the base frame 211 is set to be considerably longer than the total size of the width of the rectangular frame 201 and the frame 30 for the scaffold (approximately 2.5 times in the example shown in FIG. 12). A weight 220 having a lighter weight than the combined weight of the frame 201, the scaffold frame 30, and the net extending structure 60 can be adopted.

That is, by setting the width dimension of the base frame 211 to be longer than the width dimension of the scaffolding frame 30 or the like, even if the weight 220 is lighter than the scaffolding member 30 or the like, the counterclockwise around the outer guide rail is used. The moment at the position of the center of gravity of the weight 220 toward the direction can be made larger than the moment at the position of the center of gravity around the guide rail such as the scaffolding frame 30 in the clockwise direction. The scaffolding device 10b can be stably installed on the side portion of the viaduct Br without using.

A pair of upper and lower locking projections 230 project from the base end frame 213 and the road-side support 22a of the rectangular frame 201 in the facing direction, respectively, and are superposed. The rectangular frame 201 is connected to the road surface-side base 210 by penetrating the locking pin 231 with the. Then, in a state where the two are connected, the left end face of the lower beam member 25a abuts on the right end face of the base frame 211, so that the connection state is ensured.

The guide rail 21 on the right side of the weight 220
The six counterclockwise moments are applied to the support
Since it is larger than the moment 0 and the clockwise moment around the guide rail 216 by the scaffold frame 30 and the like, the inconvenience of the scaffolding device 10b rotating clockwise around the guide rail 216 is reliably prevented.

[0092] After the positioning of the road surface mount 210 is performed, the stop is inserted between the casters 215 and the guide rails 216, so that the road surface mount 210 may move during the work. There is no.

According to the scaffold device 10b of the third embodiment,
Even when the bridge K is not provided in the viaduct Br, the scaffolding device 10b can be attached to the side of the viaduct Br. Further, when the rectangular frame 201 and the scaffolding frame 30 are moved to the next span, it is only necessary to move the road-side pedestal 210 along the guide rails 216 with the rectangular frame 201 removed, and the workability is improved. Become.

The present invention is not limited to the above embodiment, but also includes the following contents.

(1) In the above embodiment, the upper rail member 51 and the lower rail member 52 are
0, and corresponding vertical roller members 53,
Upper horizontal roller member 54 and lower horizontal roller member 55
Are provided on the support gantry 20, but instead of this, a rail member may be provided on the support gantry 20, and a roller member may be provided on the scaffold frame 30.

(2) In the above embodiment, the scaffolding frame 30 is hung on the support gantry 20, but the present invention relates to the scaffolding frame 30 being hung on the support gantry 20. The present invention is not limited to this. For example, the overhang column 24 of the support base 20 may be longer than that of the above embodiment, and a floor protruding outward at the lower end of the overhang column 24 may be provided. A rail may be laid on this floor, and the scaffold frame 30 may be arranged on the rail via wheels.

(3) In the above embodiment, the net stretching frame 61 is fixed to the scaffolding frame 30 in a deployed state with respect to the scaffolding frame 30, but instead of this, the net stretching is performed. The installation frame 61 may be configured to be foldable with respect to the scaffold frame 30 via a hinge. In this way, when connecting the scaffolding frame 30 to the support base 20 or when the protective net 63 is unnecessary, the net extending frame 61 can be folded so as not to be in the way. , Workability is improved.

[0098]

According to the first and second aspects of the present invention,
A supporting frame detachably fixed to a side portion of the viaduct, and a scaffolding frame body having a scaffold plate movably connected to the supporting frame via a connecting member in a direction in which the viaduct extends. By constructing a scaffolding device for additional work, the work area of the scaffolding frame is moved to the next working area when the work in the work area where the position is set is completed, thereby expanding the workable area of the scaffolding frame. Each time the work in one work area is completed, the inconvenience of the conventional scaffolding of dismantling the scaffold and rebuilding it in the next work area is eliminated, and the construction cost of the scaffold is reduced. It is possible to improve the working efficiency.

Further, since the scaffold frame is connected to the support stand at the outside position of the viaduct, the worker can be located at the outside position of the viaduct. can do.

According to the third aspect of the present invention, since the support base is provided with the inverted U-shaped frame formed in an inverted U shape in side view so as to straddle the row, the lower surface of the inverted U-shaped frame is provided. The support gantry can be stably mounted on the railing by a simple operation of covering the opening on the railing, and the workability of mounting the support gantry on the railing can be improved.

According to the fourth aspect of the present invention, since the scaffold frame is movably suspended from the support frame via the connecting member, the structure for connecting the scaffold frame to the support frame is simplified. This can contribute to a reduction in equipment costs.

According to the fifth aspect of the present invention, the connecting member includes a rail member provided on one side of the support base and the scaffold frame so as to extend in the longitudinal direction of the viaduct, and a rail member provided on the other side. Since the roller member is guided by the member and the roller member is provided so as to be relatively movable, the roller member is guided by the rail member and rotates about the axis, so that the scaffolding frame body is moved with respect to the support frame. It can move smoothly. Therefore, it becomes possible to move the scaffold frame with a small force compared to a case where the scaffold frame is simply connected to the support frame in the sliding contact state, and the scaffold frame for changing the working area can be moved. Moving work can be made more efficient.

According to the sixth aspect of the present invention, since the rail member is provided on the scaffold frame, the rail member is provided on the support gantry in a situation where the support gantry is continuously provided along the side of the viaduct. Compared to the case, only one rail member can be used, and thus the cost of parts can be reduced.

According to the seventh aspect of the present invention, in a state where the upper rail member is supported by the upper roller member, the support frame is provided on the scaffold frame with the contact point between the upper rail member and the upper roller member as a fulcrum. However, since this moment is received by the lower roller member via the lower rail member, the inconvenience of the scaffolding frame body being tilted can be reliably prevented.

According to the eighth aspect of the present invention, since the scaffold frame is provided with the stopper for restricting the relative movement of the scaffold frame with respect to the support frame, the scaffold frame works on the side of the viaduct. With the area set, by operating the stopper to regulate the movement of the scaffold frame,
Problems such as the scaffolding frame moving on its own due to wind pressure or the like do not occur, so that safety can be improved and workability can be improved.

According to the ninth aspect of the present invention, since the scaffolding frame is provided with a net so as to surround the scaffolding frame, equipment such as bolts and nuts can be used during work on the scaffolding plate. Even if materials or construction tools such as a hammer or screwdriver fall accidentally, the scaffolding frame captures the equipment materials and construction tools that were accidentally dropped by this net. It is possible to reliably avoid a dangerous situation caused by the falling of the apparatus.

[0107] According to the tenth aspect of the present invention, the method of implementing the scaffolding device includes: a supporting gantry erection step of arranging a plurality of gantry in parallel on a side portion of the viaduct; A scaffold frame installation step of installing a scaffold frame so as to be movable in a side-by-side direction, and moving the scaffold frame from the support frame at one end to the support frame at the other end while moving the scaffold frame to the side of the viaduct. And the supporting frame transfer process of transferring the supporting frame behind the scaffold frame to the front of the scaffold frame after completion of the moving process.
As for the work within the range where the support gantry is juxtaposed, predetermined work can be performed on the side of the viaduct while moving the scaffolding frame from one end to another between the support gantry.

When the construction within the above range is completed, the support frame behind the scaffold frame is moved to the front of the scaffold frame, and the scaffold frame is moved to the relocated support frame. It can be moved to complete the next span of work on the side of the viaduct.

[0109] Therefore, every time when the installation work on the side of the viaduct in the preset construction area is completed, the scaffold is removed, and the scaffold is assembled again for the new construction area. Compared with the conventional scaffolding construction method that repeatedly removes and constructs a cumbersome and costly scaffold, scaffold construction becomes extremely simple, and it is possible to reduce the scaffold assembly cost and speed up construction work.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a scaffold device according to the present invention, and shows a state in which a support base and a scaffold frame are separated from each other.

FIG. 2 is a perspective view showing a state in which a support base and a scaffold frame shown in FIG. 1 are attached to a railing;

FIG. 3 is a view taken in the direction of the arrow A in FIG. 2;

FIG. 4 is a view on arrow B of FIG. 2;

FIG. 5 is a partially enlarged view of FIG. 3 for explaining support of an upper rail member by a vertical roller member and an upper horizontal roller member.

FIG. 6 is a partially enlarged view of FIG. 3 for explaining support of a lower rail member by a lower horizontal roller member.

FIG. 7 is an explanatory diagram for explaining the operation of the scaffolding device, taking as an example a case where a sound insulating wall is constructed on a railing;
The state where the support base is being suspended toward the railing,
(B) has shown the state where the support base was fixed to the railing, respectively.

FIG. 8 is an explanatory diagram for explaining the operation of the scaffolding device by taking as an example a case where a sound insulation wall is constructed on a railing;
The state in which the scaffold frame is being suspended toward the support gantry, and the state (b) shows the state in which the scaffold frame is connected to the support gantry, respectively.

FIG. 9 is an explanatory diagram for explaining an operation of the scaffolding device, taking as an example a case where a sound insulation wall is constructed on a railing;
A state where the sound insulation wall is being fitted between the sound insulation wall support columns,
(B) shows a state in which a two-span sound insulation wall is constructed.

FIG. 10 is an explanatory diagram for explaining the operation of the scaffolding device, taking as an example a case where a sound insulation wall is constructed on a railing, and shows a state in which the scaffolding frame is moved by one span.

FIG. 11 is an explanatory view showing another embodiment of a structure for suspending a scaffold frame to a support base.

FIG. 12 is a side view showing a third embodiment of the scaffolding device according to the present invention.

[Explanation of symbols]

 10, 10a, 10b Scaffolding device 20, 200 Support gantry 20a Inverted U-shaped frame 21 Comb frame 22, 22a Road surface support 23 Outer surface support 24 Overhang support 25 Upper beam material 25a Lower beam material 256 Reinforcement plate 26 Intermediate beam Material 27 Angle material 27a Upper angle material 27b Lower angle material 28 Short strut 29 Suspension bracket 29a Through hole 201 Rectangular frame 210 Road surface mount 211 Basic frame 212 Weir frame 213 Base end side frame 214 Brace frame 215 Caster 216 Guide rail 220 Weight 230 Locking protruding piece 231 Locking pin 30 Scaffold frame 31 Scaffolding board 32 Scaffolding board support frame 33 Vertical frame 34 Long horizontal frame 35 Short horizontal frame 36 Intermediate horizontal frame 37 Brace 37 40 Support frame Table fixing structure 41 Bolt support bracket 42 Locking bolt 42a Contact disk 43 Contact protrusion 44 Buffer material 50 Connection structure 51 Upper rail member 52 Lower rail member 53 Vertical roller member (upper roller member) 53a Roller receiving member 53b Roller shaft 53c Vertical roller 54 Upper horizontal roller member (upper roller member) 54a Roller receiving member 54b Roller shaft 54c Upper horizontal roller 55 Lower horizontal roller member (lower roller member) 55a Roller receiving member 55b Roller shaft 55c Lower horizontal roller 60 Net tension structure 61 Net stretching frame 61a Short frame 61b Long frame 61c Intermediate frame 62 Brace frame 63 Protective net 70 Stopper 71 First protruding plate 71a First pin hole 72 Second protruding plate 72a Second pin hole 73 Stop pin 73aEmissions body 73b head 80 sound insulation wall 81 the sound insulating wall supporting struts K railing K1 road

Claims (10)

[Claims] 1. A scaffolding device for an additional work of a viaduct to be used when attaching an additional work to a side portion of the viaduct, the support base being detachably fixed to a side portion of the viaduct, and the support base. And a scaffolding frame that is movably connected in the direction in which the viaduct extends through a connecting member,
In addition, the scaffold frame is connected to the support cradle at a position outside the viaduct, and the viaduct is attached to the scaffolding. 2. The scaffolding device according to claim 1, wherein the support base is detachably fixed to a railing constructed on a side portion of the viaduct. 3. The installation work for a viaduct according to claim 2, wherein the support base is provided with a frame including a fixing portion having a shape extending from an inner side surface of the railing to an outer side surface of the support frame over an upper end thereof. For scaffolding equipment. 4. The scaffolding frame is suspended by connecting the upper side and the side facing the support base to the support base via the connecting member. 4. The scaffolding device for installation work of a viaduct according to any one of claims 3 to 3. 5. A rail member provided on one side of a support base and a frame for a scaffold so as to extend in a longitudinal direction of a viaduct, and a rail member guided by the rail member on the other side. The scaffolding device according to any one of claims 1 to 4, further comprising a roller member provided so as to be relatively movable. 6. The scaffolding device according to claim 5, wherein the rail member is provided on a scaffold frame. 7. The rail member includes an upper rail member provided above the scaffold frame, and a lower rail member provided below the upper rail member.
The support pedestal includes an upper roller member that supports the upper rail provided at the top or the upper portion, and a lower roller member that supports the lower rail member provided at a lower portion, and the lower roller member has an upper portion. 7. The viaduct according to claim 6, wherein the viaduct is attached to the support base so as to receive a moment directed toward the support base of the scaffold frame with the contact point between the rail member and the upper roller member as a fulcrum. Scaffolding equipment for construction. 8. The viaduct according to claim 1, wherein the scaffold frame is provided with a stopper for restricting relative movement of the scaffold frame with respect to the support frame. Scaffolding equipment for additional construction. 9. The viaduct installation work according to claim 1, wherein a net is stretched around the scaffolding frame so as to surround the scaffolding frame. Scaffolding equipment. 10. A supporting frame mounting step for mounting a plurality of supporting frames in series along the side of the viaduct, and a scaffold frame is mounted on any of the plurality of supporting frames so as to be movable in the direction in which the frames are arranged. A scaffolding frame setting process, a moving process of moving the scaffolding frame to the next support frame during or before and after construction using the scaffolding frame, and And a step of transferring the support gantry to the front of the scaffold frame.