JP3420188B2 - Scaffolding device for skewed structural members in bridge structures - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main structure of a truss structure which supports a floor slab of a bridge structure, and is arranged on a diagonal structure member obliquely incorporated between upper and lower chord members and the like. Then, the present invention relates to a scaffolding device for inspecting the oblique structural member, painting, and the like.

[0002]

2. Description of the Related Art Conventionally, when inspecting a truss structure below a floor slab in a bridge structure such as a suspension bridge or performing repair work such as painting, for example, for a vertical structural member in the truss structure, A scaffolding device is formed by assembling the scaffolding frame from below so as to surround this structural member,
You can use this scaffolding device to perform the above work, but you want to inspect the diagonal structural members obliquely incorporated between the upper and lower chord members of the truss structure and perform painting work on the diagonal structural members. In some cases, it was difficult to install the scaffolding device on this oblique structure member.

Therefore, the scaffolding device is constructed by continuously assembling the scaffold frame vertically and horizontally from the lower chord member to the upper part of the entire main structure constituting the truss structure, that is, between the upper chord member and the lower chord member. Currently, the scaffolding device is used to perform inspection work and painting work on the oblique structure members.

[0004]

However, in such a scaffolding device, it is necessary to completely assemble parts of the truss structure that do not require inspection, painting, etc. There is a problem in that labor is required, a large number of scaffolding frames and scaffolding plates are required, the construction cost is high, and dismantling after use also requires a long period of time. In addition, it is difficult to assemble the scaffold frame rigidly, and strong winds cause swaying, which makes it impossible to ensure work safety.

The present invention has been made in view of the above problems, and its object is to have a simple structure and be strong, and require some skill for the oblique structure member of the bridge structure. Stable that can be installed efficiently without
To provide scaffolding equipment .

[0006]

To achieve the above object, according to the Invention The skew structural member for scaffolding instrumentation in bridge structure of the present invention
As set forth in claim 1 , the arrangement is such that the central portion of the lower surface of the horizontal transverse rod is supported on the oblique structural member of the bridge structure, and the horizontal lateral projecting outward from the upper ends of both side surfaces of the oblique structural member. The upper and lower ends of the inner and outer leg rods are connected and fixed to both sides of the bridge, and the lower ends of the inner and outer leg rods projecting downward from both sides of the oblique structure member are connected by scaffolding plate support rods. A plurality of scaffolding units are formed in the oblique structure member at regular intervals in the longitudinal direction to integrally connect the horizontal transverse rods of the adjacent scaffolding units by a connecting member and to form an outer unit. A scaffolding device in which a handrail member is fixed between leg rods, and a scaffolding member is installed between scaffolding plate support rods of adjacent scaffolding units.
The horizontal horizontal rod and the inner and outer leg rods constituting the scaffold unit are made of angle steel or channel steel having a certain length,
The upper ends of the inner and outer leg rods are overlapped so as to be orthogonal to the horizontal horizontal rod, and the overlapping portions are fixed by bolts and nuts, and the connecting projections are fixed to both sides of the upper surface of the horizontal horizontal rod. Of the scaffolding unit adjacent to the lever connecting protrusion
It and the ends of the connecting member is fixed by bolts and nuts
It is characterized by that.

Further, in the invention according to claim 2 , the surrounding frame member is fixed to the vertical structural member in the bridge structure in which the downward sloping end of the oblique structural member is fixed, and the reinforcing frame member of the reinforcing frame member is fixed to the vertical structural member. The lowermost scaffold in a plurality of scaffold units in which the proximal end is fixed and the distal end of the reinforcing support member is arranged on the oblique structure member at regular intervals in the longitudinal direction of the oblique structure member. The scaffolding device is connected and fixed to the unit to support the scaffolding device on the vertical structural member.

[0008]

[Operation] To attach the scaffolding unit to the oblique structure member in the bridge structure, first of all, a horizontal horizontal rod having a constant length is orientated in a direction orthogonal to the longitudinal direction of the oblique structure member, and the lower surface of the central portion is fixed. While supporting it on the diagonal structure member,
A pair of inner and outer leg rods are arranged on both sides of this horizontal horizontal rod, and the upper ends of these inner and outer leg rods are connected to the horizontal horizontal rod.
By fixing these, the inner and outer leg rods are suspended so as to straddle the oblique structural members from both sides of the horizontal horizontal rod, and then the lower ends of the adjacent inner and outer leg rods are connected by the scaffold member supporting rods. One scaffolding unit is attached to the oblique structure member in a straddling state by.

At this time, the horizontal horizontal rod and the inner and outer leg rods are formed from shaped steel such as chevron steel and grooved steel, and the upper and lower ends of the inner and outer leg rods are superposed so as to be orthogonal to the horizontal horizontal rod. By fixing the overlapping part of the lever with bolts and nuts, it is possible to easily assemble a rigid and strong scaffolding plate unit. In addition, a spacer member for contacting and receiving the side surface of the oblique structure member is mounted on the inner side surface of the inner leg rod, and the inner legs are integrally connected below the oblique structure member by a connecting rod. This makes it possible to construct a strong and stable scaffolding unit that is free from rattling and swinging even in strong winds.

Further, the scaffolding unit is attached to the oblique structure member at regular intervals in the longitudinal direction thereof, and the horizontal horizontal rods of the adjacent scaffolding units are integrally connected by a rigid connecting member and the outer leg is provided. A scaffolding device is assembled by fixing a handrail member between the rods and erection of the scaffolding member between the scaffolding plate support rods. The scaffolding device assembled in this manner has a structure in which the rigid and stable scaffolding units are integrally connected by the rigid connecting member and the handrail member, and therefore rattling and shaking hardly occur even by strong wind, and therefore, You can work safely.

Further, the scaffolding member has a structure in which a plurality of step plates are fixed in a stepwise manner between the frame members on both sides, so that the worker can smoothly and slip along the skewed structure member. It is possible to move up and down without having to do it, and to inspect skew structure members and paint work efficiently with a stable posture.

As the supporting means of this scaffolding device, a vertical structural member in a bridge structure in which the downwardly inclined end of the oblique structural member is fixed can be used. That is, the surrounding frame member is fixed to the vertical structure member, and the distal end portion of the reinforcing support member having the base end portion fixed to the surrounding frame member is provided with a plurality of tips arranged in series in the longitudinal direction of the oblique structure member. The entire scaffolding device can be supported in a rigid state by connecting and fixing it to the bottommost scaffolding unit in the scaffolding unit. In this case, the uppermost scaffolding unit constituting the scaffolding device may also be supported by an upper chord member or the like in which the upwardly inclined ends of the oblique structure members are integrated. Also, each scaffolding unit itself can be fixed to the skewed structure member via the inner leg rod or the like.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the present invention will be described with reference to the drawings. In FIG. 1 and FIG. 2, A is the oblique structure at the time of inspecting or painting the oblique structural member B framed between the upper and lower chord members in the truss structure under the floor slab of the bridge structure. A scaffolding unit for mounting to a member B to form a scaffolding device, which is a horizontal horizontal rod 1 made of laterally opened channel steel having a length of about 3 to 5 of a width dimension of the oblique structure member B, Two inner leg rods 2 and 2 and two outer leg rods 3 and 3 made of chevron steel and having the same length as or slightly shorter than the horizontal horizontal rod 1, and the inner and outer leg rods 2 adjacent to each other. Scaffolding member support rod 4 connecting the lower end portions of 3
And a connecting rod 5 made of shaped steel, which is disposed below the oblique structure member B and connects both ends thereof to the opposing portions of the inner leg rods 2 and 2. In addition, the horizontal horizontal rod 1
May be formed of angle steel or other shaped steel, and similarly, the inner leg rod 2 and the outer leg rod 3 may be formed of channel steel or other shaped steel.

The horizontal horizontal rod 1 is supported on the oblique structure member B by placing the lower surface of the central portion thereof on the oblique structure member B in the direction orthogonal to the longitudinal direction of the oblique structure member B. However, the horizontal horizontal rod 1 may be supported with the lower surface of the central portion thereof in direct contact with the upper surface of the oblique structure member B, or the oblique structure via an appropriate adjusting member. It may be configured to be placed on the member B.

At the center of the upper surface of the horizontal rod 1, a connecting projection 6 is bent in the L-shape with a certain distance left and right.
6 is fixed by welding or by bolts, and at the center of the vertical wall surface of the oblong rectangular shape, there is a space slightly larger than the width of the oblique structure member B in the left and right, and bolt mounting holes 7, 7 are provided. Are formed by penetrating between the front and rear surfaces, and further, at the both end portions of the horizontal horizontal rod 1 which are spaced from the bolt mounting holes 7, 7 by a predetermined distance outwardly. Bolt mounting holes 8 are formed so as to penetrate therethrough.

On the other hand, the left and right inner leg rods 2, 2 are provided at the upper ends thereof with bolt insertion holes 9 for matching the left and right bolt attachment holes 7, 7 on the inner side of the horizontal horizontal rod 1 between the front and rear surfaces. The bolt mounting holes 10, 10 for connecting both side end portions of the connecting rod 4 are formed in the middle portion in the lengthwise direction which projects downward from the lower surface of the oblique structure member B. Further, support holes 11, 11 for connecting the inner ends of the scaffolding member support rods 4 are formed in the lower ends of the inner leg rods 2, 2 extending between the front and rear surfaces. ing.

The upper ends of the left and right outer leg rods 3, 3 which are arranged outside the left and right inner leg rods 2, 2 and are formed to have the same length as the inner leg rods 2, 3. And the left and right bolt mounting holes 8 and 8 at both end portions of the horizontal horizontal rod 1 above.
A bolt insertion hole 12 is formed to penetrate between the front and rear surfaces, and at the lower end thereof, on the same horizontal line as the bolt support hole 11 formed at the lower end of the inner leg rod 2. Support holes 13 for connecting the outer ends of the scaffolding member support rods 4,
13 are drilled.

Then, the left and right bolt mounting holes 7, 7 formed at both sides of the center of the horizontal horizontal rod 1 are inserted through the bolts formed at the upper ends of the two inner leg rods 2, 2. Holes 9, 9
The inner leg rods 2, 2 are made to hang downward from both sides of the center of the horizontal horizontal rod 1 along both side faces of the oblique structural member B by making them match each other and fixing them by bolts and nuts 14. . The bolt mounting holes 7, 7 provided on both sides of the center of the horizontal horizontal rod 1 are formed in a long hole in the longitudinal direction of the horizontal horizontal rod 1, that is, a long hole in the horizontal direction.
The mounting position of 2 may be configured to be finely adjustable in and out.

Similarly, bolt mounting holes 8, 8 formed at both end portions of the horizontal horizontal rod 1 are inserted through bolts formed at upper end portions of the two outer leg rods 3, 3. By aligning the holes 12 and 12 and fixing them with bolts and nuts 15, the outer leg rods 3 can be made to hang downward from both end portions of the horizontal horizontal rod 1 in parallel with the inner leg rods 2 and 2. I have to. Reference numeral 20 denotes a spacer member fixed to the facing surfaces of the inner leg rods 2 and 2 in the longitudinal direction, and prevents the scaffolding unit A from swinging by abutting against and receiving the side surface of the oblique structure member B. It is a thing.

Further, bolt insertion holes 16, 16 are formed at both end portions of the connecting rod 5 so as to match the bolt mounting holes 10, 10 provided in the left and right inner leg rods 2, 2. Similarly, bolt insertion holes 17 and 17 for matching the support holes 11 and 13 formed at the lower ends of the inner and outer leg rods 2 and 3 adjacent to both side portions of the scaffold member support rod 4 are also formed. Has been done. Reference numeral 18 denotes a bolt / nut for connecting and fixing the connecting rod 5 between the inner leg rods 2 and 2, and 19 denotes connecting and fixing the scaffold member supporting rod 4 between the lower end portions of the inner and outer leg rods 2 and 3 adjacent to each other. Bolts and nuts for.

In order to attach the scaffolding unit A thus constructed to the oblique structure member B, first, the horizontal transverse rod 1 is oriented in the direction orthogonal to the longitudinal direction of the oblique structure member B, and the lower surface of the central portion thereof is arranged. Are horizontally mounted on the skewed structural member B, and inner and outer leg rods 2, 3 are respectively provided on both sides of the horizontal crossed rod 1 projecting outward from both upper ends of both side surfaces of the skewed structural member B.
The inner and outer leg rods 2 and 3 are made to hang downward from both side portions of the horizontal horizontal rod 1 by connecting and fixing the upper end portions of the.

The upper end portions of the inner and outer leg rods 2 and 3 are connected to the horizontal horizontal rod 1, so that the rear surfaces of the upper ends of the inner and outer leg rods 2 and 3 are superposed on the front surface of the horizontal horizontal rod 1. Bolt insertion holes 9 and 12 drilled in the portion, bolt mounting holes 7 drilled in both sides of the central portion and both ends of the horizontal horizontal rod 1,
8 and the bolt insertion holes and the mounting holes communicating with each other are integrally fixed by bolts and nuts 14 and 15.

The inner leg rods 2, 2 fixed at the upper ends of the horizontal transverse rods 1 on both sides of the central portion thereof are fixed in parallel with each other along the both side surfaces of the oblique structural member B. Then, the spacer members 20, 20 fixed to the central portion of the facing surface thereof are respectively brought into contact with or brought close to the lower end portions of both side surfaces of the oblique structure member B. Horizontal rod 1
The mounting positions for the bolt mounting holes 7, 7 of the bolts 7 and 7 can be adjusted in the left-right direction by forming the bolt mounting hole 7 in the elongated shape as described above, so that the spacer members 20 and 20 are obliquely moved. The scaffolding unit A can be stably and firmly attached to the oblique structure member B by surely contacting both side surfaces of the structure member B.

As described above, after the upper end portions of the left and right inner leg rods 2, 2 and the outer leg rods 3, 3 are connected and fixed to the horizontal horizontal rod 1, along the lower surface of the oblique structure member B. The connecting rods 5 are arranged in the width direction of the skewed structural member B, and both end portions of the connecting rods 5 are overlapped on the central rear faces of the left and right inner leg rods 2 and 2, and the connecting rods 5 are bored at both end portions. The bolt insertion holes 16 and 16 are aligned with the bolt mounting holes 10 formed in the left and right inner leg rods 2 and 2, and the bolt insertion holes and the mounting holes are communicated with each other. By being fixed integrally by 18, the intermediate rods of the left and right inner leg rods 2, 2 are integrally connected by a connecting rod 5. In addition, the upper end surface of the connecting rod 5 is slanted to the structural member B.
The scaffolding unit A may be fixed in a state of being brought into contact with the lower surface of the scaffolding unit. With this configuration, the scaffolding unit A is prevented from swinging in the front-rear direction (the lengthwise direction of the oblique structural member B) and the scaffolding unit A is placed in the vertical state. Thus, the skewed structure member B can be more firmly supported.

Further, below both sides of the oblique structure member B, a scaffolding member support rod 4 is arranged between the lower end portions of the inner and outer leg rods 2 and 3 which face each other, and the both side ends thereof are connected to these inner and outer leg rods 2, 3. 3 are overlapped with the front surface of the lower end portion of the scaffolding member 3, and bolt insertion holes 17, 17 are formed in both end portions of the scaffolding member support rod 4, and support holes 11 are formed in the lower end portions of the inner and outer leg rods 2, 3. , 13 are fixed together by means of bolts and nuts 19, 19 between the through holes and the support holes which are communicated with each other, whereby the scaffolding member support rod 4 is attached between the lower ends of the inner and outer leg rods 2, 3. The scaffolding member support rod 4 is formed of a steel rod body having screw portions at both ends, and both ends thereof are inserted into the lower end support holes 11 and 13 of the inner and outer leg rods 2 and 3, and then nuts are inserted. It may be fixed by screwing, or may be formed of a shaped steel such as an angle steel like the inner and outer leg pipes 2 and 3.

Further, the oblique structural member B is shown in the figure as being made of a steel material having a hollow rectangular cross section having projecting ridges protruding in the vertical direction on both side edges of the upper and lower surfaces. The scaffolding unit A can be attached in the same manner as above even when the scaffold unit or the H-section steel is used.

As described above, the scaffolding unit A is mounted so as to straddle a predetermined portion in the lengthwise direction of the oblique structure member B, and the scaffolding unit A is attached to the oblique structure member B at regular intervals in the longitudinal direction. As shown in FIG. 3 and FIG. 4, the scaffolding device is constructed by installing scaffolding members 21 for inspecting the oblique structural member B and painting the oblique structural member B by mounting the scaffolding member 21 on the scaffolding member 21.

The concrete structure of this scaffolding device will be described. The scaffolding units A, A adjacent to each other in the longitudinal direction (hereinafter referred to as the front-back direction) of the oblique structural member B are mounted on the upper surface of the horizontal transverse rod 1. A state in which a straight connecting member 22 made of shaped steel is arranged between the projecting connecting projections 6 and 6 and the connecting member 22 is superposed on the connecting projections 6 and 6 which are opposed to each other in the front-rear direction. The bolts and nuts 23 are fixed to each other so that they are sequentially connected in series with a certain distance in the front and rear.

Further, the scaffolding units A adjacent to each other in the front and rear,
Rigid handrail members 24, 24 made of steel pipe or shaped steel are arranged in a erected state between the upper part and the lower part of the outer leg rods 3, 3 in A, and the handrail member 24 intersects the outer leg rods 3, In the scaffolding member supporting rods 4 and 4, the portion 24 is fixed to the outer leg rod 3 by the clamp 25 (shown in FIG. 1) and is attached between the lower ends of the inner and outer leg rods 2 and 3 in the scaffolding unit A. , Scaffolding members A having a constant width and a constant length are sequentially installed between the scaffolding units A adjacent to the front and rear, and the scaffolding member supporting rods 4 and 4 of the A, and are integrally provided at both ends of the scaffolding member 21. By attaching the locking hooks 21c to both side ends of the scaffolding member supporting rods 4 and 4, the scaffolding member 21 is attached below both sides of the skewing structural member B so as to be continuous in the longitudinal direction of the skewing structural member B. It has a different structure.

As shown in FIGS. 4 and 5, the scaffolding member 21 has parallel straight-sided frame portions having a length substantially equal to the length between the scaffolding member supporting rods 4 and 4 adjacent to each other in the front and rear direction. 21a,
21a, a plurality of step plates 21b at regular intervals in the length direction.
Is provided and the both end portions of these step plates 21b are fixed to the facing surfaces of the both side frame portions 21a, 21a, whereby the step plates 21b are fixed stepwise at small intervals.

The scaffolding device comprising the scaffolding unit array arranged in such a state that it straddles the oblique structure member B as described above,
Due to the inclination of the oblique structural member B, the entire oblique structural member B
Since there is a possibility that the scaffolding unit A slides down toward the downward tilted end, the lowermost (last) scaffolding unit A in the scaffolding unit row is placed under the oblique structure member B as shown in FIGS. 3, 5, and 6. The lower end of the vertical structural member C in the bridge structure in which the slanted ends are integrally fixed is connected and supported via the reinforcing support member D and the surrounding frame member E.

The surrounding frame member E includes four frame members made of steel.
26 is assembled in the shape of a flat rectangular frame so as to be in close contact with the four-sided outer peripheral surface at the lower end of the vertical structural member C, and the surrounding frame member E is fixed to the lower end of the vertical structural member C and is attached to the scaffolding device. Joint metal parts 27, 27 are projectingly provided on both side ends of the frame member 26 toward the scaffolding device. Bolt mounting holes 28 and 29 are formed in the upper and lower portions of the joint metal 27.

On the other hand, the reinforcing support member D is composed of a tilt arm 30 and a horizontal arm 31 made of a rigid steel material such as channel steel,
Bolt mounting holes 32, 33 are provided on both ends of these arms 30, 31.
And 34, 35 are drilled respectively. Then, the tilt arm 30 is arranged above the horizontal arm 31, and the bolt mounting hole 32 provided at the base end portion of the tilt arm 30 is aligned with the upper bolt mounting hole 28 of the one fitting hardware 27, and the bolt and nut 36 are used. The bolt mounting hole 33 that is fixed and is provided at the tip end is provided with one inner leg rod 2 in the lowermost scaffolding unit A.
Are fixed by bolts and nuts 38 so as to match the bolt mounting holes 37 formed at the upper end of the.

Further, the horizontal arm 31 disposed below the inclined arm 30 has a bolt mounting hole 34 provided at the base end thereof aligned with a bolt mounting hole 29 on the lower side of the one fitting hardware 27, and is bolted. The bolt mounting hole 35 fixed by the nut 39 and provided at the tip end is aligned with the bolt mounting hole 40 bored at the lower end of one inner leg rod 2 in the lowermost scaffolding unit A. It is fixed by bolts and nuts 41. And this tilt arm 30 and horizontal arm 31
And the other fitting hardware 27 of the surrounding frame member E and this fitting hardware.
By connecting between the other inner leg rods 2 of the lowermost scaffolding unit A facing 27 in the same manner as above,
A reinforcing support member D in which the scaffolding device is supported by the vertical structural member C is configured.

As shown in FIG. 5, a scaffolding plate 42 is installed between the horizontal arms 31 on both sides of the reinforcing support D, and the scaffolding plate 42 is the lowest scaffolding unit A.
In the lowermost step plate 21b of the scaffolding member 21 in the above, the tip end thereof is made to be substantially the same height and is brought close to the step plate 21b so that the operator can easily move from the scaffold plate 42 to the step plate 21b. .

The uppermost scaffolding unit A constituting the scaffolding device is also joined to the upper chord member or the like where the upper slanted ends of the oblique structural members B are integrally joined and connected via a proper supporting member. You may support it. Further, when each scaffolding unit A constituting the scaffolding device is fixed to the oblique structure member B, the reinforcing support member D and the surrounding frame member E are not necessarily required.

As described above, the scaffolding device is attached to the oblique structure member B in a state of straddling the oblique structure member B, and is arranged below both sides of the oblique structure member B in parallel with the oblique structure member B. The step board 21b of the installed scaffolding member 21 is used as a scaffold for an operator to inspect the oblique structural member B or to perform a painting work on the oblique structural member B. In FIGS. 1, 3 and 5, reference numeral 44 denotes a net which is entirely covered from both outer side surfaces to outer bottom surfaces of the scaffolding device, and its upper end edge is fixed to the upper handrail members 24, 24. Has been done.

In the above embodiments, the horizontal horizontal rod 1 and the upper and lower ends of the inner and outer leg rods 2 and 3 are connected and fixed, and the scaffold member supporting rod 4 and the connecting rod 5 are connected and fixed to the leg rod. The bolt mounting holes, the bolt insertion holes, or the support holes that match each other are provided and the holes are fixed by bolts and nuts. However, the present invention is limited to such connection and fixing means. Without fixing, for example, a bolt is planted in one member, the bolt is inserted into a hole provided in the other member and fixed by a nut, or an L-shaped notch is formed in one member. Make a hole,
Appropriate means such as a means for locking a bolt protruding from the other member in this notch and fixing it with a nut can be adopted.

[0039]

As described above, according to the scaffolding device for the oblique structural member in the bridge structure of the present invention, the horizontal transverse rod having the central lower surface supported on the upper surface of the oblique structural member in the bridge structure is provided. A pair of inner and outer leg rods for integrally connecting and fixing the upper end portion to the inner end portion and the outer end portion on both sides of the horizontal horizontal rod projecting outward from the upper ends on both side surfaces of the oblique structure member, scaffolding Yu from a scaffold member support rod for connecting the lower ends of the inner and outer Ashi杆projecting downward from both sides of the line structure member
Since the knit is configured, when not in use, these members can be gathered together and stored compactly, and during use, they can be easily transported and handled at the work site.

Further, when assembling the scaffold to the diagonal structure member of the bridge structure, the lower surface of the central portion of the horizontal transverse rod is supported on the oblique structural member and the inner and outer sides of the horizontal transverse rod are supported. The leg rods are respectively arranged, and the upper ends of these inner and outer leg rods are connected and fixed to a horizontal horizontal rod by bolts or the like, and then the lower ends of these inner and outer leg rods protruding downward from both sides of the oblique structure member. Since the spaces are connected by the scaffolding member support rod, the scaffolding unit can be easily and accurately arranged on the oblique structure member without requiring any skill, and the work time can be shortened and the scaffolding unit can be assembled. The cost can be reduced, and moreover, the scaffolding unit can be attached to the skewed structural member so as to have a stable posture in a rigid connection state in which rattling and rocking hardly occur.

Further, the horizontal lateral bridging rod and the inner and outer Ashi杆formed of angle iron or the interposition steel having a predetermined length, superposed so as to be orthogonal to the upper end portions of the inner and outer Ashi杆horizontal lateral bridging rod Since the overlapping part is fixed by bolts and nuts, it is possible to construct a scaffolding unit with excellent strength as well as connecting and fixing the inner and outer leg rods to the horizontal horizontal rod simply and securely with bolts. It is possible to obtain a scaffolding unit that is rigid and has excellent stability. In addition, a spacer member for contacting and receiving the side surface of the oblique structure member is attached to the inner side surface of the inner leg rod so that the upper end portions of both inner leg rods are integrally fixed. It is possible to have a structure in which the scaffolding unit is accurately and firmly fixed to a predetermined position without deviating with respect to the oblique structure member together with the horizontal horizontal rod on the row structure member.

Further, since the inner leg rods are integrally connected and fixed by the connecting rod below the slanting structural member, the inner leg rods on both sides are brought into contact with or separated from each other with their upper ends as fulcrums. It is possible to prevent rocking in the direction of rotation, and to always keep the two vertically downward in parallel with each other, thereby forming a stable and strong scaffolding unit.

A scaffolding device comprising a combination of the above-mentioned scaffolding units comprises a plurality of scaffolding units, which are arranged in the oblique structure member at regular intervals in the longitudinal direction, and connect the horizontal transverse rods of adjacent scaffolding units. Since the handrail member is fixed between the outer leg rods and the scaffolding member is installed between the scaffolding plate support rods of the adjacent scaffolding units, the connecting member and the handrail member are connected. The adjacent scaffolding units can be integrally connected with each other in a state of being rigidly connected to each other, and the entire device can be assembled into one strong framework state without causing a rattling or swinging. It is possible to provide a stable scaffold and ensure the safety of work.

In the above scaffolding device, the horizontal horizontal rods and the inner and outer leg rods which form the scaffolding unit are formed of angle steel or channel steel having a certain length, and the upper ends of the inner and outer leg rods are formed. The parts are overlapped so as to be orthogonal to the horizontal horizontal rod, and the overlapping parts are fixed by bolts and nuts, and the connecting projections are fixed on both sides of the upper surface of the horizontal horizontal rod. Since the end of the connecting member of the scaffolding unit adjacent to one piece is fixed with bolts and nuts, not only is it easy to handle horizontal horizontal rods and inner and outer leg rods made of rigid shaped steel, Since the parts to be connected and fixed to each other are overlapped and joined and integrated with bolts and nuts, the assembly work can be done easily and firmly and the connecting members always connect and hold the adjacent scaffolding units at an integral interval. so Also becomes easy its connecting work is the work of assembling the scaffold for skew structural member can well smoothly and efficiently, it is possible to reduce the construction cost.

Further, according to the invention of claim 2 , the surrounding frame member is fixed to the vertical structural member in the bridge structure in which the downward sloping end of the oblique structure member is fixed, and the surrounding frame member is reinforced and supported. The bottom part of a plurality of scaffolding units in which the base end of the material is fixed and the tip of the reinforcing support member is arranged on the oblique structure member at regular intervals in the longitudinal direction of the oblique structure member. Since the scaffolding device is supported by the vertical structural member by being connected to and fixed to the scaffolding unit, the entire scaffolding device is supported by the vertical structural member through the reinforcing support member even though the oblique structural member is inclined. Can be supported firmly and stably.

[0046] Further, the scaffold members are between mutually parallel side frames members so as to engaged with the scaffolding plate supporting rod scaffold unit adjacent the opposite ends, a plurality of step plates at regular intervals in the longitudinal direction By having a structure fixed in a staircase
What, inspection and painting of skew structural member this step plate as a scaffold it is possible worker to lift without smoothly and slippage along the oblique structural member walks the step plate above occurs Work can be performed efficiently with a stable posture, and work time can be shortened.

[Brief description of drawings]

FIG. 1 is a simplified front view of a scaffolding unit attached to an oblique structure member,

FIG. 2 is an exploded perspective view thereof,

FIG. 3 is a simplified side view of the scaffolding device arranged on the oblique structure member;

FIG. 4 is a simplified perspective view of a part thereof,

FIG. 5 is a side view of a reinforcing support member supporting a scaffolding device,

FIG. 6 is an enlarged perspective view thereof.

[Explanation of symbols]

A scaffolding unit B skew structure member C Vertical structural member D Reinforcement support 1 Horizontal horizontal rod 2 Inner leg rod 3 outer leg rod 4 Scaffolding member support rod 5 connection rod 6 Connecting protrusion 20 Spacer member 21 scaffolding material 21b step plate 24 Handrail member 30 tilt arm 31 Horizontal arm

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Claims (2)

(57) [Claims] 1. A bridge structure in which a central portion of a lower surface of a horizontal transverse rod is supported on a diagonal structural member, and both side portions of the horizontal transverse rod protruding outward from upper ends of both side surfaces of the diagonal structural member are respectively supported. A scaffolding unit is formed by connecting and fixing the upper ends of the inner and outer leg rods and connecting the lower ends of these inner and outer leg rods projecting downward from both sides of the oblique structure member with a scaffolding plate support rod to form a scaffolding unit. A plurality of units are arranged in the oblique structure member at regular intervals in the longitudinal direction to integrally connect the horizontal transverse rods of the adjacent scaffolding units with a connecting member and a handrail member between the outer leg rods. And a scaffolding member provided between the scaffolding plate support rods of the adjacent scaffolding units.
The horizontal horizontal rod and inner and outer leg rods that make up the
It is made of angle steel or channel steel, and the upper ends of the inner and outer leg rods are
Overlapping them so that they are perpendicular to the horizontal and horizontal rods
The parts are fixed by bolts and nuts, and horizontal
The connecting projections are fixed to both sides of the upper surface of the rod.
The end of the connecting member of the scaffolding unit adjacent to the projecting piece
A scaffolding device for a diagonal structural member in a bridge structure, characterized by being fixed by bolts and nuts . 2. A surrounding frame member is fixed to a vertical structural member in a bridge structure to which a downwardly inclined end of a skewed structural member is fixed, and a base end portion of a reinforcing support member is fixed to the surrounding frame member. A scaffold is formed by connecting and fixing the tip end portion of the reinforcing support member to the lowermost scaffolding unit of the plurality of scaffolding units arranged in the oblique structure member at regular intervals in the longitudinal direction of the oblique structure member. The scaffolding device for a diagonal structural member in a bridge structure according to claim 1 , wherein the device is supported by the vertical structural member.