JP2002061116A - Scaffold support device and scaffold device in bridge structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scaffold support device for accurately and firmly supporting a scaffold frame for performing inspection and painting work of a bridge structure and a scaffold device for constructing a stable scaffold by using this scaffold support device. SOLUTION: This scaffold support device is composed of a horizontal support frame composed of straight shape steel having the specific length and both side fixing frames composed of shape steel of bending at a right angle, the horizontal support frame is placed at the central part on a horizontal structural member such as a truss lower chord member and an upper chord member of a bridge structure, both side fixing frames are respectively allowed to abut to both side surfaces of the horizontal structural member, and are integrally fixed by bolts in a state of receiving both side part under surfaces of the horizontal support frame on the horizontal rod part, and both studs of the scaffold frame are fixed to and supported by both side end parts of the horizontal support frame in this scaffold support device projecting to both outsides from the horizontal structural member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffold support device mounted on a horizontal structural member of a bridge structure when performing inspection work or repair work such as painting of the bridge structure, and the scaffold support device. The present invention relates to a scaffold device.

[0002]

2. Description of the Related Art Conventionally, when a truss structure under a floor slab of a bridge structure such as a suspension bridge is inspected or repaired such as painting, a scaffold for inspecting and repairing the truss structure has been assembled. However, this scaffold must be supported by horizontal structural members of a truss structure unlike the outer wall construction of a high-rise building on the ground that can be supported on the ground, and therefore, the scaffold device shown in FIG. 9 is generally used. Has been adopted.

That is, in this scaffolding device, a steel pipe 31 of about 2 m is disposed on a horizontal structural member B in a state orthogonal to the horizontal structural member B, and a central portion in a longitudinal direction thereof is placed.
An iron wire 32 is wound around the horizontal structural member B and the steel pipe 31 and bound to form a scaffolding support A ′ formed by fixing the steel pipe 31 to the horizontal structural member B, and the scaffolding support A ′ is formed. Are disposed on the horizontal structural member B at regular intervals in the longitudinal direction, and both ends of the scaffold frame C are clamped by clamps 33 at both end portions of the steel pipe 31 in each of the scaffolding support portions A ′ projecting to both sides from the horizontal structural member B. A gate-shaped scaffolding frame C is formed by fixing the lower ends of the pillars 34, 34 and connecting a horizontal rod 35 between the upper ends of the two side pillars 34, 34. Then, a building frame having a predetermined height is assembled by successively adding, and furthermore, after connecting the pillars of the scaffold frames C, C adjacent in the longitudinal direction of the horizontal structural member B with the connecting material 40, the adjacent scaffold frames C Scaffolding plates 36, 36 are erected on both sides of upper horizontal bars 35, 35 of C, respectively. It is constituted by the.

A scaffold plate 36 for inspecting and painting the horizontal structural member B is provided below the horizontal structural member B.
In order to dispose, the ropes 37, 37 such as chains are hung from both side ends of the steel pipe 31 constituting each of the scaffold support portions A ', and then, in the longitudinal direction of the horizontal structural member B. Adjacent cable
The lower ends of 37, 37 are connected by a support pipe 38, and a scaffold erection pipe 39 is laid at predetermined intervals in the longitudinal direction of the horizontal structural member B between the left and right support pipes 38, 38 arranged in parallel with each other. The scaffold plate 36 is erected between the scaffold erection pipes 39 adjacent to the horizontal structural member B in the longitudinal direction.

[0005]

However, according to such a scaffolding device, the scaffolding support portion A 'for supporting the scaffolding frame C has the steel pipes 31 arranged perpendicular to the horizontal structural member B. The central portion in the longitudinal direction of the steel pipe 31 is fixed to the horizontal structural member B by winding an iron wire 32, so that the steel pipe 31
It is difficult to fix in a state where it is accurately oriented in the direction orthogonal to the length direction of the horizontal structural member B, and therefore, the scaffold frames C, C erected on the respective scaffold support portions A ′ are mutually connected. It is no longer possible to face each other in parallel, and it is necessary to correct it during the assembling work using the connecting members 40 and the like, which complicates the work and requires much time and labor.

Further, a steel pipe 31 formed by winding an iron wire 32
In the case of fixing the scaffold frame C or the like, unstable mounting occurs due to rattling and lateral vibration even after fixing, and furthermore, vertical swinging with the horizontal structural member B as a fulcrum. It is necessary to perform the assembly work while attaching the reinforcing member and the connecting member together with the correction of the elements. For example, the horizontal vibration preventing pipe 41 is attached along the upper end of both sides of the horizontal structural member B, and the horizontal vibration preventing pipe 41 is attached. Work such as fixing the pipe 41 to the lower surface of the steel pipe 31 constituting the scaffolding support portion A 'with an appropriate connection fitting 42 must be performed,
There has been a problem that the scaffold assembling operation requires a long period of time and the cost thereof also rises. Furthermore, when dismantling and removing the scaffold, the work requires a great deal of time and labor.

Further, when a scaffold plate 36 for inspecting the horizontal structural member B or performing a painting operation is provided below the horizontal structural member B, the iron wire 32 for the horizontal structural member B is also required.
When the steel pipe 31 is fixed by winding, the above-described unstable element occurs, and the same problem as described above occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a bridge which can fix and support a scaffold frame accurately and firmly and which can be assembled and dismantled smoothly and efficiently. An object of the present invention is to provide a scaffold support device for a structure and a scaffold device using the scaffold support device.

[0009]

In order to achieve the above object, a scaffolding support device according to the present invention has a plurality of bolt mounting holes formed on both sides in the longitudinal direction. And a horizontal support frame made of shaped steel having a fixed length provided with scaffolding frame mounting portions at both side ends, and a horizontal rod portion integrally provided at an upper end of the vertical rod portion to form a front inverted L-shape and A fixed frame made of a shaped steel having a rod portion with a bolt mounting hole corresponding to the bolt mounting hole of the horizontal support frame and a connecting hole at a lower end portion of the vertical rod portion, The lower surface of the center portion in the longitudinal direction of the horizontal support frame is supported on the upper surface of the horizontal structural member of the bridge structure, and the fixed frame is disposed on both sides of the horizontal structural member, and these vertical rods are disposed on both sides of the horizontal structural member. Face and hold each horizontal rod The bolt mounting holes are connected by bolts to oppose lower surfaces on both sides of the horizontal support frame projecting to both sides from the upper surface of the structural member, and furthermore, the vertical sides of the fixed frames projecting downward from the lower surface of the horizontal structural member The connecting holes provided at the lower end of the rod portion are integrally connected by a connecting member.

In the above scaffold support device, the invention according to claim 2 is characterized in that a bolt mounting hole drilled on both sides of the horizontal support frame and a bolt mounting hole drilled in the horizontal rod portion of the fixed frame. At least one of them is formed as a long hole elongated in the width direction of the horizontal structural member of the bridge structure.

According to a third aspect of the present invention, there is provided a scaffolding device, wherein a central portion of a lower surface in a longitudinal direction of a horizontal support frame made of a section steel having a fixed length is supported on an upper surface of a horizontal structural member in a bridge structure. A pair of left and right fixed frames made of a shaped steel formed in an inverted L-shape are disposed below both sides of the support frame protruding to both sides from the horizontal structural member, and the vertical rod portions of these fixed frames are arranged in a horizontal structural member. And the horizontal rods connected to the upper ends of the vertical rods are fixed by bolts to both sides of a horizontal support frame protruding to both sides from the horizontal structural member. The lower end portions of the vertical rod portions of the both-side fixed frames protruding downward from the lower surface of the member are integrally connected by a connecting member to form a scaffold support device, and the scaffold support device is connected to the horizontal structure. At the same time, the left and right pillars of the gate-shaped scaffold frame are erected and fixed on both side ends of the horizontal support frame of each scaffold support device, and the scaffold frame is directed upward. A plurality of frames are assembled in succession to assemble a building frame having a predetermined height, and furthermore, connecting the pillars of the scaffolding frames adjacent in the longitudinal direction of the horizontal structural member with a connecting material, The scaffolds on both sides are sequentially erected on both sides.

In this scaffolding device, the invention according to claim 4 is characterized in that the scaffolding support device having the above-mentioned structure is mounted on upper and lower horizontal structural members which are arranged parallel to each other at a certain interval vertically in a bridge structure. The upper and lower ends of a building frame formed by assembling a scaffold frame between these upper and lower scaffold support devices are supported.

[0013]

[Function] A horizontal structural member, such as a truss upper and lower chord member, which is disposed parallel to each other at a certain interval above and below a bridge structure, and is to be inspected and painted, etc. The scaffold support device is mounted and fixed at regular intervals in the longitudinal direction. This mounting is performed by placing a horizontal support frame made of a shaped steel of a fixed length in a direction perpendicular to the longitudinal direction of the horizontal structural member, placing the lower surface of the central portion on the horizontal structural member, and attaching the horizontal support frame to both side surfaces of the horizontal structural member. The vertical rods of the fixed frame made of shaped steel, also formed in an inverted L-shape in front, are brought into contact with each other, and project from the upper surface of the horizontal structural member to both sides on the upper horizontal rod of these fixed frames. The lower surfaces of both sides of the horizontal support frame are opposed to each other so that the bolt mounting holes are aligned.

In this case, the horizontal support frame can be easily formed without using a ruler or the like by simply aligning the lower surfaces of the both sides with the horizontal rod portions of the fixed frames on both sides extending outward from the upper ends of both sides of the horizontal structural member. And it is arranged exactly in the direction perpendicular to the longitudinal direction of the horizontal structural member, and in this state, both sides of the horizontal support frame are integrally connected to the horizontal rod portion of the fixed frame by bolts, and If the lower ends of the vertical rod portions of the both-side fixed frames projecting downward from the lower surface are integrally connected by a connecting member, the horizontal support frame is firmly and stably fixed to the horizontal structural member in the above-mentioned posture, and fixed. There is no danger of rattling or lateral vibration occurring later.

At the time of attaching the horizontal support frame to the horizontal structural member, as described in claim 2,
A long hole extending in the width direction of the horizontal structural member of the bridge structure, wherein at least one of the bolt mounting hole formed in both sides of the horizontal support frame and the bolt mounting hole formed in the horizontal rod portion of the fixed frame is formed. Thus, even if the width of the horizontal structural member is slightly different, the horizontal support frame can be mounted according to the width, and the mounting operation can be easily performed.

After the scaffold support device is mounted on the horizontal structural member of the bridge structure at regular intervals in the longitudinal direction, the left and right pillars of the scaffold frame are attached to the scaffold frame mounting portions at both ends of the horizontal support arm of the scaffold support device. Is fixed and supported. At this time, since the horizontal support frame is accurately and firmly fixed in the direction orthogonal to the length direction of the horizontal structural member as described above, the scaffolds adjacent to the front and rear, that is, the longitudinal direction of the horizontal structural member, The frames are accurately faced, and the assembling work using the joint material between the scaffold frames can be easily and efficiently performed.

In order to assemble the scaffolding device between horizontal structural members made of truss upper and lower chord members which are arranged parallel to each other at a certain interval vertically in the bridge structure, first, a lower horizontal After attaching the scaffold support device to the structural member at regular intervals in the longitudinal direction in the same manner as described above and fixing the scaffold support device, a gate-shaped scaffold frame is provided on both side end portions of the horizontal scaffold frame mounting portion of each horizontal support frame of each scaffold support device. Erect and fix the left and right pillars respectively.

Next, each scaffold frame is assembled into a building frame of a predetermined height by sequentially joining a plurality of frames upward,
Further, a scaffolding device is constructed by sequentially arranging both side scaffolding plates on both side portions of the upper end horizontal rod portion of the front and rear adjacent scaffolding frames. In this case, as described in claim 4, a scaffold support device is also attached to the upper horizontal structural member above the horizontal structural member, and the upper end of the building frame assembled to the scaffold support device to a predetermined height. , A stable and strong scaffolding device can be assembled.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, A is a scaffold which is attached to a horizontal structural member B having a hollow rectangular cross section composed of a truss upper chord material, a middle chord material, and a lower chord material in a truss structure below a floor slab of a bridge structure. A scaffold support device for supporting a frame, comprising: a straight horizontal support frame 1 made of upwardly-opening channel steel having a length of about 3 to 4 times the width of a horizontal structural member B; Reverse steel L
It consists of a pair of left and right fixed frames 2, 2 bent and formed in a letter shape.

The horizontal support frame 1 has both sides projecting outward from the horizontal structural member B when the lower surface of the central portion of the flat bottom portion 1a in the longitudinal direction is placed on the horizontal structural member B in an orthogonal state. A plurality of bolt mounting holes 3 each having a long hole in the longitudinal direction of the horizontal support frame 1 are formed in the portion at regular intervals in the longitudinal direction. Further, both ends in the longitudinal direction of the horizontal support frame 1 are provided with scaffolding frame mounting portions.
1 'is formed on the wall pieces 1b, 1b projecting upward from both long side edges of the bottom piece 1a in the scaffold frame mounting portion 1'.
The fixing holes 4 are formed at regular intervals in the longitudinal direction.

On the other hand, the fixed frame 2 is provided at the upper end of a vertical rod portion 2a slightly longer than the vertical width of the horizontal structural member B with a horizontal rod bent at right angles outwardly with respect to the vertical rod portion 2a. The base end of the portion 2b is integrally connected, and the vertical rod portion 2a is a strip-shaped half 2a 'of angle iron that is bent at a right angle.
Is formed so as to abut against and receive the side surface of the horizontal structural member B in a surface contact state, and a bolt connection hole 5 is formed in the one half 2a 'at the lower end protruding downward from the lower end of the horizontal structural member B. Has been drilled. The horizontal rod 2b is formed so as to support the lower surface of the bottom piece 1a of the horizontal support frame 1 on the flat upper surface of the half 2b 'forming the horizontal plane. A plurality of bolt mounting holes 6 composed of long holes elongated in the longitudinal direction are formed at regular intervals in the longitudinal direction corresponding to the plurality of bolt mounting holes 3 provided in the bottom piece 1a of the frame 1. The bolt mounting holes 3 and 6 provided on both side portions of the horizontal support frame 1 and the horizontal rod portion 2b of the fixed frame 2 do not have to be both elongated holes. It may be formed in advance.

The vertical rod 2a forming the fixed frame 2
The width of the half pieces 2a ', 2b' of the horizontal rod 2b is substantially the same as the width of the bottom piece 1a of the horizontal support frame 1, and the length of the horizontal rod 2b projects from the horizontal structural member B. The horizontal support frame 1 is formed to have a length equal to the length of the side portion or to be shorter as shown in FIG. Note that the vertical rod portion 2a and the horizontal rod portion 2b may be formed by bending a single angled steel having a fixed length at a right angle, or may be formed separately and fixed at a right angle by welding or the like. It may be a structure in which it is performed. Further, the horizontal support frame 1 and the fixed frame 2 may be formed from a channel steel or an angle iron, instead of being formed from a channel steel and an angle iron, respectively. It may be formed from a square pipe.

In the figure, reference numerals 7 and 7a are inserted between the bolt mounting holes 3 provided in the bottom piece 1a of the horizontal support frame 1 and the bolt mounting holes 3 provided in the horizontal rod 2b of the fixed frame 2 so as to be horizontal. A bolt for integrally connecting the support frame 1 and the fixed frame 2 and a nut screwed to the bolt;
Reference numeral 8 denotes a connecting member including a long bolt 8a and a nut 8b for connecting the lower ends of the pair of fixed frames 2 and 2 on the left and right. The fixed frame 2 is provided with a reinforcing member 9 integrally connecting the vertical rod 2a and the horizontal rod 2b. As shown in FIG. 3, the reinforcing member 9 may be a straight rod.

In order to mount the scaffold support device A thus constructed on the horizontal structural member B, the horizontal support frame 1 is oriented in the direction perpendicular to the longitudinal direction of the horizontal structural member B in the longitudinal direction of the bottom piece 1a. Of the fixed frames 2 and 2 having an inverted L-shaped front surface formed on both sides of the horizontal structural member B with the lower surface of the central portion of the horizontal frame placed on the horizontal structural member B.
The flat vertical surfaces of the halves 2a 'of the fixed frames 2a, 2a are brought into contact with each other, and the positions of the fixed frames 2, 2 are moved and adjusted in the front-rear direction (the longitudinal direction of the horizontal structural member B) to adjust the horizontal structural members. B projecting outward from the horizontal structural member B on a flat horizontal surface of a half 2b 'of the horizontal rods 2b, 2b of the fixed frames 2, 2 extending outward from the upper ends of both side surfaces of B. The lower surfaces of the bottom pieces 1a provided with the bolt mounting holes 3 on both sides of the horizontal support frame 1 are overlapped in a surface contact state.

Then, the fixed frame 2 extending perpendicularly outward from the upper ends of both side surfaces of the horizontal structural member B,
The two horizontal rods 2b, 2b are automatically arranged on a line orthogonal to the horizontal structural member B, and the upper surface of one half 2b 'of these horizontal rods 2b, 2b is placed on a flat horizontal surface of the horizontal support frame 1. The horizontal support frame 1 is simply and accurately orthogonal to the longitudinal direction of the horizontal structural member B without using a ruler, etc. Placed in the direction.

In this state, the bolt 7 is inserted between the bolt mounting holes 3 of the horizontal support frame 1 and the bolt mounting holes 6 of the horizontal rods 2b, 2b of the fixed frames 2, 2 which match each other, and the nut 7a is screwed. As a result, the horizontal support frame 1 whose central portion is placed on the upper surface of the horizontal structural member B in a horizontal state and the vertical rod portions 2a, 2a are brought into contact with both side surfaces of the horizontal structural member B in a sandwiched state. The two fixed frames 2 are fixedly connected to each other. At this time, the bolt mounting hole 3 provided in the horizontal support frame 1 and the horizontal rod portion 2b of the fixed frame 2
At least one of the bolt mounting holes 6 provided in the horizontal support member 1 is formed as a long hole elongated in the width direction of the horizontal structural member B. These fixed frames 2 and 2 can be mounted on the horizontal structural member B.

Further, the vertical rod portions of the fixed frames 2, 2 projecting downward from the lower ends of both side surfaces of the horizontal structural member B.
A long bolt, which is a connecting member 8, is provided between the lower end portions of 2 a and 2 a through a bolt connecting hole 5 provided at a lower end portion of one of the vertical rod portions 2 a.
8a, the leading end of which is inserted into the bolt connection hole 5 provided at the lower end of the other vertical rod 2a, and the nuts 8b are screwed so that the fixed frames 2, 2 on both sides are connected to the vertical rod 2b. , 2b abut against both side surfaces of the horizontal structural member B and are integrally connected in a received state.

When the central portion of the lower surface of the horizontal support frame 1 is directly placed on the upper surface of the horizontal structural member B, the horizontal support frame 1 has a fine uneven surface on the upper surface of the horizontal structural member B.
However, when there is a possibility that the upper and lower surfaces of the horizontal structural member B may have unevenness as a fulcrum, as shown in FIG. It is preferable that the spacer members 10 and 10 made of H-shaped steel are placed in advance, and the lower surface central portion of the horizontal support frame 1 is placed on the spacer members 10 and 10 in a state of being bridged.

As described above, the horizontal rods 2b, 2b are connected to the horizontal support frame 2 with the vertical rods 2a, 2a entirely abutting on both side surfaces of the horizontal structural member B. Bolts and nuts 7, 7a superimposed on the lower surface on both sides of 1
The vertical rods 2a, 2a of the fixed frames 2, 2 protruding from below the horizontal structural member B
Connecting member 8 composed of bolts and nuts 8a and 8b
Since the horizontal support frame 1 and the fixed frames 2 on both sides are connected to each other in a tightened state, the horizontal support frame 1 is perpendicular to the horizontal structural member B without rattling or lateral vibration. The structure can be accurately and firmly fixed to the member B.

The vertical rods of the fixed frames 2, 2 on both sides
2b, between the lower end portions of the vertical rod portion 2b, both ends are bolts without the connecting member consisting of the long bolt 8
A connecting member of a fixed length that can be connected to the lower end of 2b may be used. Further, when both side surfaces of the horizontal structural member B are not vertical due to the twist of the horizontal structural member B, etc., the vertical rod portions 2b, 2b of the both-side fixed frame 2 and the both side surfaces of the horizontal structural member B An adjustment member (not shown) is interposed therebetween so that the vertical rod portion 2b of the fixed frame 2 is vertically arranged on both side surfaces of the horizontal structural member B via the adjustment member. As such an adjusting member, it is possible to use a backing plate which is attached to the opposing surfaces of the vertical rods 2b, 2b of the fixed frames 2, 2 via a universal joint so as to be tiltable. The vertical rod portion 2b can be brought into a vertical state and received by the side surface of the horizontal structural member B by tilting and contacting the inclined side surface according to the degree of inclination.

The horizontal scaffolding support device A can be mounted even when the horizontal structural member B is made of an I-shaped steel or an H-shaped steel in addition to the structural member having a hollow rectangular cross section. That is,
In the horizontal structural member B made of I-shaped steel, the flat lower surface of the horizontal support frame 1 is placed on the flat upper surface as described above, while the vertical rod portion 2 is mounted on the fixed frame 2.
The upper and lower ends of the b and 2b may be brought into contact with and received by the upper and lower flanges of the I-shaped steel in the state of being bridged. On the other hand, the lower surface of the central portion of the horizontal support frame 1 is placed in a state of being erected, while the vertical rods 2b, 2b of the fixed frame 2 are brought into contact with and received by the flat vertical surfaces of both side flanges in the same manner as described above. I just need.

The scaffolding support device A mounted on the horizontal structural member B in this manner performs inspection and painting work of the horizontal structural member B below the horizontal structural member B, for example, the upper chord member in a bridge structure. In order to suspend the scaffold frame C on which the scaffold plate 11 is mounted, as shown in FIGS. 4 and 5, the scaffold support device A is mounted at regular intervals in the length direction of the horizontal structural member B, and The upper ends of both side pillars 12, 12 made of a steel pipe of a fixed length in the scaffolding frame C are fixed to the scaffolding frame mounting portions 1 ′ at both side ends of the horizontal supporting frame 1 in the supporting device A using fixing hardware 13.

In this case, the upper end of the pillar 12 is covered with a fixing metal 13, and the fixing metal 13 is fixed to a fixing hole 4 provided in the scaffolding frame mounting portion 1 ′ with a bolt and the horizontal supporting frame 1 is fixed. The upper end of the pedestal 12 protruding upward from both side ends is gripped by one half clamp of the clamp 14, and the other half clamp of the clamp 14 orthogonal to the one half clamp is adjacent to the front and rear adjacent horizontal support frame 1. 1. A pillar 13 is suspended from the horizontal support frame 1 by holding a support beam member 15 made of a steel pipe disposed in parallel with the longitudinal direction of the horizontal structural member A on both side end portions of the horizontal support member 1. ,
The scaffolding frame C is formed by fixing both side ends of the horizontal member 16 between the lower ends of the both side pillars 13 and 13 in a bridged state.

Both ends of the horizontal member 16 are clamped 14 '.
The connecting rods 1 are connected to the lower ends of the two pillars 13 and 13 and are parallel to each other on both lower sides of the horizontal structural member B.
7 and 17, respectively, and these connecting rods 17 and 17 are fixed to the lower ends of both side pillars 13 and 13 of the scaffolding frame C with appropriate fixing brackets. 16 sides are supported. Further, the scaffold plate 11 is mounted in a state of being bridged between both side portions of the laterally extending members 16 adjacent to each other in front and rear. In this scaffold support device A, the horizontal support frame 1 is formed from a fixed-length angle steel.

FIG. 6 shows another use form of the scaffold support device A. The electric gondola scaffold D is provided by using the scaffold frame mounting portions 1 ', 1' on both sides of the horizontal support frame 1 of the scaffold support device A. , D are suspended.

FIGS. 7 and 8 show a scaffolding device E constructed above the scaffolding supporting device A based on the scaffolding supporting device A. The scaffolding supporting device A is a truss lower chord member of a truss structure. A frame mounting portion 1 ′ which is mounted and fixed to the horizontal structural member B made of the above at regular intervals in the longitudinal direction in the same manner as described above, and is formed by both side ends of the horizontal support frame 1 of each scaffold support device A. , 1 'on jack hardware 1
8 and 18 are installed, and these jack hardware 18 and 18 are fixed by bolts using fixing holes 4 drilled in the scaffold frame mounting portions 1 'and 1'.

The lower ends of the two pillars 12, 12 of the scaffold frame C formed in a front gate shape are fixed to the left and right jack hardware 18, 18 installed on each scaffold support device A, thereby fixing the two pillars 12, , 12 are erected and fixed on the left and right jack hardware 18, 18. The scaffold frame C may be a gate-shaped scaffold frame C such as a torii frame in which both ends of the support rod 19 are integrally connected between the upper ends of the two pillars 12 and 12 in advance, or Alternatively, a scaffold frame C formed in a gate shape by connecting and fixing both ends of the horizontal rod portion 19 between the upper end portions of the two pillars 12 and 12 with the clamps 14 may be used.

In this manner, the jack hardware 18, 18 is fixed to both ends of the horizontal support frame 1 of each scaffold support device A,
The above-mentioned scaffolding frames C which are erected and fixed on the jack hardware 18, 18 are used as one layer, and the next scaffolding frames C are successively connected to these scaffolding frames C in the upward direction, thereby forming a multi-layered scaffolding frame. C, and a horizontal structural member B
The upper ends of the pillars 12 of all the scaffold frames C adjacent to each other in the longitudinal direction (front-back direction) are connected by a joining material 20 made of a steel pipe, and the braces 21 are arranged in an X-shape, and both ends thereof are connected to the front-back scaffold The scaffolds are fixed to the opposing pillars 12, 12 of the frames C, C, and are erected at predetermined intervals in the front and rear. Board 11 sequentially,
The scaffolding device E is configured by erection and fixing.

In the scaffolding frame C, when the horizontal support rod 19 is attached between the upper ends of the two pillars 12 and 12 by connecting metal fittings such as clamps, both ends of the horizontal support rod 19 are connected to each other. It is structured to be received on the joining material 20. In addition,
The joint member 20 is also fixed to the pillar 12 by a connection fitting such as a clamp. In addition, this joining material 20 is
It is desirable to provide it also between the lower ends of the pillars of the scaffolding frame C of one layer fixed on 8 and 18.

The scaffolding frame C on the top layer of the scaffolding device E is
The above-mentioned scaffold support device A supporting the scaffold frame C of one layer is connected to and supported by a horizontal structural member B ′ above a horizontal structural member B to which the scaffold support device A is attached. The supporting structure is such that the scaffold support device A is fixed in the longitudinal direction in correspondence with the upper horizontal structure member B ′ and vertically above each of the scaffold support devices A mounted and fixed to the lower horizontal structure member B. Attach and fix at every interval, and insert the upper ends of the two pillars 12 and 12 of the topmost scaffolding frame C into the scaffolding frame mounting portion 1 ′ of the horizontal supporting frame 1 of the scaffolding supporting device A and support the fixing hardware 13. The fixed hardware
13 is fixed to a fixing hole 4 provided in the scaffold frame mounting portion 1 'by a bolt.

The horizontal support frame 1 and the fixed frames 2 on both sides constituting the scaffold support device A are connected to a horizontal structure.
The method of fixing to B 'is the same as described above, and a description thereof will be omitted. Further, in the above-described embodiment, the fixing hole 4 for the jack hardware 18 or the like is provided as the scaffolding frame mounting portion 1 'in the horizontal support frame 1 of the scaffolding supporting device A. It may be configured so as to protrude, and to fit the lower ends of the two pillars 12, 12 of the one-level scaffolding frame C to this pin and fix it with screws or the like.

[0042]

As described above, according to the scaffold support device for a bridge structure of the present invention, a plurality of bolt mounting holes are formed on both sides in the longitudinal direction, and the scaffold frame mounting portions are provided on both side ends. A horizontal support frame made of shaped steel of a certain length,
A horizontal rod portion is integrally provided at the upper end of the vertical rod portion to form an inverted L-shaped front surface, and a bolt mounting hole is formed in the horizontal rod portion corresponding to the bolt mounting hole of the horizontal support frame. Since it consists of a fixed frame made of shaped steel with a connecting hole drilled at the lower end of the rod, these horizontal support frames and fixed frames can be stored neatly as a unit when not in use. In addition, even during use, transportation or handling at a work site becomes easy.

Further, the horizontal support frame made of shaped steel is placed on the horizontal structural member of the bridge structure in a direction perpendicular to the longitudinal direction of the horizontal structural member. Front inverted L on both sides of structural member
The vertical support of the fixed frame made of a shaped steel formed in the shape of a letter is brought into contact with the horizontal support frame protruding from the upper surface of the horizontal structural member to both sides on the upper horizontal rod of the fixed frames on both sides. The horizontal support frame can be simply and accurately arranged in the direction perpendicular to the longitudinal direction of the horizontal structural member only by making the lower surfaces of both sides face each other and aligning the bolt mounting holes. At this time, since the horizontal support frame and the fixed frames on both sides are formed from shaped steel, the horizontal support frame can be stably mounted on the horizontal structural member, and the lower surfaces of both sides of the horizontal support frame and the fixed frame can be fixed. The horizontal rod portion can be adjusted to a surface contact state, and the connecting operation with the bolt can be performed smoothly, and both can be connected and integrated in a strong and stable state.

In this state, both sides of the horizontal support frame are integrally connected to the horizontal rods of the fixed frame by bolts, and between the lower ends of the vertical rods of the fixed frames projecting downward from the lower surface of the horizontal structural member. Can be fixed to the horizontal structural member firmly and accurately and stably in the above posture by the connecting member, and the assembling work can be easily performed without any skill. In addition, the assembly can be performed with high accuracy and the assembly cost can be reduced. In addition, there is no possibility that rattling or lateral runout will occur even after fixing.

Further, according to the second aspect of the present invention, the bolt mounting holes formed in both sides of the horizontal support frame and the bolt mounting holes formed in the horizontal rod of the fixed frame are formed. Since at least one of the horizontal structural members of the bridge structure is formed as a long hole in the width direction, even if the width of the horizontal structural member is slightly different, the horizontal support frame can be easily and accurately adjusted according to the width dimension. Can be attached to

According to the scaffolding device using the scaffolding support device, as described in claim 3, the scaffolding support device is mounted on the horizontal structural member at regular intervals in the longitudinal direction. The left and right pillars of the gate-shaped scaffolding frame are respectively erected and fixed on both side ends of the horizontal support frame, and a plurality of the scaffolding frames are sequentially joined upward to form a building frame having a predetermined height. Assembling, furthermore, as a structure in which the pillars of the scaffolding frame adjacent in the longitudinal direction of the horizontal structural member are connected by a connecting member, and both side scaffolding plates are sequentially laid on both side portions of the upper horizontal rod portion of the scaffolding frame. Because
As described above, the horizontal support arm of the scaffolding support device is accurately and firmly fixed in a direction orthogonal to the length direction of the horizontal structural member, so that it is adjacent to the front and rear, that is, in the longitudinal direction of the horizontal structural member. The scaffolding frame can be accurately faced, and the assembling work of the scaffolding frame and the assembling work with the joint material between the scaffolding frames can be easily and efficiently performed.

In addition, the horizontal support frame made of shaped steel is firmly and accurately fixed on the horizontal structural member as described above by the two-sided fixing frame also made of shaped steel, and the two sides of the flat upper surface of this horizontal support frame are provided. Since the left and right pillars of the gate-shaped scaffolding frame are erected and fixed on the end, the scaffolding device assembled by sequentially joining the scaffolding frames upward from this scaffolding frame provides a scaffolding support. Stands and stands firmly and stably on the horizontal support frame of the equipment. Maintenance work such as painting and inspection of bridge structures can be performed smoothly and efficiently without falling or collapsing even by strong winds such as typhoons. Thus, the working time can be reduced. Also,
Disassembly and removal work after use can be easily performed.

According to the fourth aspect of the present invention, the scaffold support device is also mounted on the upper horizontal structural member above the horizontal structural member, and the building frame assembled to the scaffold support device to a predetermined height. Since the upper end portion is supported, a more stable and strong scaffolding device can be assembled.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a scaffold support device,

FIG. 2 is a front view of a state in which it is mounted on a horizontal structural member.

FIG. 3 is a front view showing a modification of the scaffold support device,

FIG. 4 is a simplified front view of a state where a scaffold frame is suspended,

FIG. 5 is a simplified side view thereof,

FIG. 6 is a simplified front view of a state where the electric gondola scaffold is suspended,

FIG. 7 is a simplified front view of a scaffold device,

FIG. 8 is a simplified side view thereof,

FIG. 9 is a simplified front view showing a conventional example.

[Explanation of symbols]

 Reference Signs List A Scaffolding support device B Horizontal structural member C Scaffolding frame E Scaffolding device 1 Horizontal supporting frame 1 'Scaffolding frame mounting part 2 Fixed frame 2a Vertical rod part 2b Horizontal rod part 3, 6 Bolt mounting hole 8 Connecting member 11 Scaffolding frame 12 Pillar 20 Splice

Claims (4)

[Claims] 1. A horizontal support frame made of a fixed-length section steel having a plurality of bolt mounting holes formed on both sides in a longitudinal direction and a scaffolding frame mounting portion provided on both side ends, and a vertical rod portion. A horizontal rod portion is integrally provided at the upper end of the horizontal support frame to form an inverted L-shape. The horizontal rod portion has a bolt mounting hole corresponding to the bolt mounting hole of the horizontal support frame. A fixed frame made of a shaped steel having a connection hole formed at a lower end thereof, wherein a lower surface of a central portion in a longitudinal direction of the horizontal support frame is supported on an upper surface of a horizontal structural member of a bridge structure; Are disposed on both sides of the horizontal structural member so that these vertical rods are received on both side surfaces of the horizontal structural member, and the respective horizontal rods protrude from the upper surface of the horizontal structural member to both sides. Above bolt mounting facing the bottom The holes are connected by bolts, and the connecting holes provided at the lower ends of the vertical rods of the both-side fixed frames projecting downward from the lower surface of the horizontal structural member are integrally connected by a connecting member. A scaffold support device for a bridge structure. 2. The width of a horizontal structural member of a bridge structure, wherein at least one of a bolt mounting hole formed in both sides of a horizontal support frame and a bolt mounting hole formed in a horizontal rod portion of a fixed frame is provided. The scaffold support device for a bridge structure according to claim 1, wherein the scaffold support device is formed as a long hole extending in a direction. 3. A horizontal support frame made of a fixed length of steel is supported on the upper surface of a horizontal structural member of a bridge structure, and a central portion of the lower surface in the longitudinal direction of the horizontal support frame is protruded to both sides from the horizontal structural member. A pair of left and right fixed frames made of a shaped steel formed in an inverted L-shape are arranged below both sides of the horizontal frame so that the vertical rods in these fixed frames are received on both side surfaces of the horizontal structural member. The horizontal rod portion connected to the upper end of the horizontal fixing member is fixed to each side portion of the horizontal support frame projecting to both sides from the horizontal structural member by bolts, and projects downward from the lower surface of the horizontal structural member. The lower end portions of the vertical rod portions are integrally connected by a connecting member to form a scaffolding support device, and this scaffolding support device is mounted on the horizontal structural member at regular intervals in the longitudinal direction and each The left and right pillars of the gate-shaped scaffold frame are respectively erected and fixed on both side ends of the horizontal support frame of the scaffold support device, and the scaffold frame is upwardly framed by a plurality of frames,
A building frame of a predetermined height is assembled by sequentially joining, further connecting the pillars of the scaffold frame adjacent in the longitudinal direction of the horizontal structural member with a connecting material, and on both sides of the upper end horizontal rod portion of the scaffold frame. A scaffolding device for a bridge structure, characterized in that scaffolding plates on both sides are sequentially erected on each of them. 4. A scaffolding support device is mounted on upper and lower horizontal structural members of a bridge structure which are arranged in parallel at predetermined intervals in the vertical direction, and a scaffold frame is assembled between the upper and lower scaffolding support devices. The scaffolding device for a bridge structure according to claim 3, wherein upper and lower ends of the building frame are supported.