JP2005248628A - Vent equipment and its construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide easily and at lower cost vent equipment which is easy to ascend and descend and improves workability and further ensures safety, and also to provide its construction method. <P>SOLUTION: The vent equipment 1 is provided with frame supportings 3 having respectively a plurality of columns 7 which support a bridge member 6 temporarily. Stair members 20 are respectively attached to outer sides of the frame supportings 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vent facility used for provisionally receiving a bridge member and a construction method thereof, for example, when a bridge is installed by a staging method.

  Generally, when a bridge is installed by the staging method, the floor slab block and the bridge girder of the bridge are provisionally received by the vent facility, so the vent facility is constructed at intervals and the floor slab block via the main girder at the top of the vent facility. Hang over. The venting facility is constructed by assembling a frame supporting structure composed of a plurality of support columns, horizontal connecting materials and a bracelet on a floor girder, and placing a pillow girder on the frame supporting structure. The frame supporter stacks a plurality of unitized frame-shaped frame members made up of the column members that constitute the columns, the horizontal connecting material, and the bracelet, and the column members of the upper and lower frame members are fixed and connected with bolts. It is assembled with that.

  When assembling the frame support work, when the upper frame member is placed on the lower frame member, it is necessary for the worker to tighten the bolts that fix the column members together. A work floor for a worker to perform bolting work is formed, and a ladder is provided for the worker to move between the upper and lower work floors (see, for example, Patent Document 1).

In addition, when the vent facility is high-rise, raising and lowering by a ladder becomes a heavy labor for workers and the risk increases, so a frame scaffold having an elevating staircase may be separately constructed adjacent to the vent facility. As a result, the worker can easily and safely ascend and descend using the elevating stairs in the framework scaffold.
JP 2000-186309 A

  However, in the former conventional vent equipment, since it is moved up and down by the ladder, there is a problem that the movement between the upper and lower work floors becomes heavy labor for the worker, and there is a risk of falling, and the lift is dependent on the safety belt. To do. Moreover, in the latter conventional vent equipment, it is necessary to provide a separate frame scaffold, and there is a problem that labor and cost for installing the framework scaffold increase.

  Furthermore, in the conventional vent equipment described above, the scaffolding plate constituting the work floor is constructed between the opposing horizontal connecting members provided at the upper end portion of the frame member, so that the work floor is located at the upper end portion of the frame member. There is a problem that the worker will be bolted on this work floor. Workers on the work floor formed at the upper end of the frame member are dangerous to put a safety belt below the waist, so it is necessary to install a master rope and handrail on the work floor one by one and put a safety belt there. However, it is considerably troublesome to provide a master rope and a handrail each time the frame member is assembled.

  The present invention takes the above-described conventional problems into consideration, and it is easy and low-cost to provide a vent facility and a construction method thereof that can easily move up and down, improve workability, and maintain safety. The purpose is to provide.

  The invention described in claim 1 is a vent facility provided with a frame support having a plurality of columns that temporarily support a bridge member, wherein a staircase member is attached to the outside of the frame support. It is said.

  Due to such a feature, the stair member that is easy to move up and down is formed integrally with the vent facility, so that it is easy to move up and down. In addition, since the staircase member is attached to the outside of the frame support work, when the staircase member is lifted or lowered, there is no obstacle or the like above the head, and it is easy to lift and lower. Furthermore, since only the staircase member is attached to the frame support work, equipment for raising and lowering the worker can be easily formed.

  According to a second aspect of the present invention, in the vent facility according to the first aspect, the frame supporting work is formed by laminating a plurality of frame members formed in a frame shape, and the frame member includes the frame frame. It is characterized in that a work floor is formed which is located at a height approximately at the center of the member.

  Due to such a feature, when the upper frame member is arranged on the lower frame member, the work floor of the lower frame member is surrounded by the upper portion of the frame member, and the upper portion of the frame member becomes a handrail. Therefore, when constructing a framework support, safety equipment is formed in advance.

  According to a third aspect of the present invention, in the vent facility according to the first or second aspect, the frame support work is provided with a landing platform spanned between the plurality of step members provided at intervals. It is a feature.

  With such a feature, it is possible to move between the stair members through the landing stage scaffold without entering the frame support work, and it is easy to move up and down using a plurality of stair members provided at intervals.

  The invention according to claim 4 is the vent equipment construction method according to any one of claims 1 to 3, wherein the frame member is formed, the step member is attached to the frame member, and a plurality of the frame members And a step of forming a frame support work by laminating layers.

  Due to such a feature, step members are sequentially formed when the frame support is formed. Moreover, since the operation | work which assembles a frame member is performed before laminating | stacking, the height work at the time of constructing | venting vent equipment decreases.

  According to the vent facility and the construction method thereof according to the present invention, since the frame support work is provided with a safe staircase member that is easy to move up and down, the worker who has to move up and down in the frame support work is a staircase member. Can be moved up and down easily and safely. Further, since the staircase member is provided outside the frame support work, when the worker moves up and down using the staircase member, there is nothing that can be an obstacle above the head, and it can move up and down smoothly. Therefore, it is possible to improve the workability of workers who have to move up and down in the framework support work. In addition, because the staircase member is simply attached to the frame support work, the equipment for raising and lowering the workers is easily formed, and even if the vent equipment is a high-rise building, equipment that is safe and easy to move up and down is provided with little effort and low cost. be able to.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a vent facility and a construction method thereof according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the vent facility 1 is mounted on a floor girder 2 laid on the ground G, a frame support 3 assembled on the floor girder 2, and a frame support 3. The pillow girder 4 is formed. Two sets of vent facilities 1 are provided at intervals, and a floor slab block 6 constituting a bridge is bridged over the two sets of vent facilities 1 via a main girder 5. The floor slab block 6 is temporarily bridged between the vent facilities 1 and is jointed to an adjacent floor slab block or bridge pier (not shown). The vent facility 1 is a temporary facility for temporarily receiving the floor slab block 6 and is removed after the bridge is completed.

  3 and 4 are side views showing a part of the frame support 3, and FIG. 5 is a plan view showing the frame support 3. As shown in FIGS. 1, 2, 3, 4, and 5, the frame support 3 has a bowl-like structure having a column 7 that temporarily supports the floor slab block 6, and has a three-dimensional frame shape. It is formed by laminating a plurality of frame members 8. The frame member 8 includes a plurality of support members 9 arranged in three rows and two rows at intervals, a plurality of horizontal joints 10 extending in the horizontal direction and connecting between adjacent support members 9, and the support members 9. And a plurality of breaths 11 fitted in a rectangular frame formed by the horizontal tether 10.

  The column member 9 is a round tubular member, and the column 7 is formed by connecting a plurality of column members 9 linearly. Further, there are a plurality of types of support members 9 having different lengths, and the length of the support members 9 constituting the uppermost frame member 8 is shorter than the support members 9 at the intermediate portion and the lower end portion. Further, a top column member 9 a shorter than the top column member 9 is connected to the upper end of the upper column member 9, and the pillow girder 4 is bridged between the upper ends of adjacent top column members 9 a. .

  FIG. 6 is a cross-sectional view of the end portion of the column member 9. As shown in FIGS. 3, 4, and 6, the upper and lower ends of the support member 9 are connected to the end portions of the horizontal joint 10 and the brace 11, and the gusset plate 12 that is pin-connected to each other, and the upper and lower support members 9 are connected to each other. And a joint plate 13 are formed. The joint plate 13 is formed in a circular shape, and four holes 13a for bolting the joint plates 13 of the upper and lower support members 9 are formed. Further, the gusset plate 12 is formed in a cross shape with the support member 9 as a center, and two holes 12a are formed at two positions for pin-joining the end portions of the horizontal joint 10 and the brace 11, respectively.

  The horizontal joint 10 is disposed between the upper end portions of the support member 9, and both end portions of the horizontal connection 10 are respectively pin-connected to the gusset plate 12 at the upper end portion of the support member 9. In addition, the brace 11 is disposed obliquely between the upper end portion of one adjacent strut member 9 and the lower end portion of the other strut member 9, and the lower end portion of one strut member 9 and the other strut member 9 is disposed obliquely with respect to the upper end of 9, and is disposed in an X shape between the two support members 9.

  7 is a cross-sectional view of the center portion of the column member 9, and FIG. 8 is a horizontal cross-sectional view taken along the line AA in FIG. As shown in FIGS. 3, 4, 7, and 8, a work floor 14 for a worker to work is formed in a plurality of stages at intervals in the framework support work 3. In addition, the column member 9 has a length of 2.0 m, and a flange portion 15 for supporting the work floor 14 is formed in an intermediate portion (1.0 m from the end) of the column member 9. Yes. The flange 15 is formed in a circular shape, and four holes 15a are formed in the flange 15 at equal intervals.

  The work floor 14 formed inside the frame member 8 includes a horizontal member 16 that is installed between the flanges 15 and arranged in parallel, and a steel tread 17 that is provided between the horizontal members 16. It is composed of The horizontal member 16 is a round tubular member, and pins 16a penetrating from above into the holes 15a of the flange 15 are respectively provided at both ends. The tread 17 is composed of a plurality of steel cloth plates (anti 18) having claws 18a hooked to the horizontal member 16 at both ends, and a scaffold plate 19 laid in a gap between the anti 18. Further, since the flange portion 15 is formed at the intermediate portion of the column member 9, the work floor 14 is formed at a position approximately at the center of the frame member 8. The anti 18 is a standardized off-the-shelf member that has been conventionally used for temporary facilities, and in the drawing, an anti with a length of 1829 mm and a width of 500 mm and an anti with a length of 1829 mm and a width of 240 mm are used.

  As shown in FIGS. 3, 4, and 5, a plurality of step members 20 for moving the worker up and down are attached to the outside of the frame supporting work 3, and a plurality of step members 20 are provided at intervals. A landing platform 21 is formed between the step members 20 formed. A staircase member 20 is attached to each frame member 8, and a staircase bracket 22 stretched on the lower end portion of one strut member 9 and the upper end portion of the other strut member 9, and the staircase bracket 22 on both ends. It has a claw 23a and a staircase frame 23 installed between the staircase brackets 22. The staircase bracket 22 includes a joint portion 24 that is bolted to the gusset plate 12 at a base end, and a rod-shaped hooked portion 25 on which a claw 23a of the staircase frame 23 is hung. The staircase frame 23 is a standardized ready-made member that has been conventionally used for temporary facilities. In the figure, a staircase frame having a width of 450 mm, a length of 1829 mm, and a height of 1955 mm is used.

  As shown in FIGS. 1 and 5, handrails 26 and 27 are formed on the inner side and the outer side of the stair member 20 so as to be gripped when the stair member 20 is moved up and down. The outer handrail (outer handrail 26) is composed of a main pillar 28 made of an angle member standing at the tip of the staircase bracket 22 and a handrail rod 29 made of a round tube extending in the inclination direction of the staircase member 20. ing. The handrail bar 29 is pin-joined to the upper end portion and the middle portion of the two main pillars 28 and is installed between the two main pillars 28.

  FIG. 9A is an enlarged view showing a joint portion on one end side (lower end side) of the inner handrail (inner handrail 27), and FIG. 9B is a joint view on the other end side (upper end side) of the inner handrail 27. It is an enlarged view showing a part. As shown in FIGS. 1, 9 (a), and 9 (b), the inner handrail 27 is a rod-shaped member that extends in the inclination direction of the staircase member 20, and the collar formed on one of the support members 9. The portion 15 and the other end (upper end) are installed between the flange portion 15 formed on the other column member 9. One end (lower end) of the inner handrail 27 is bent at an obtuse angle downward, and the other end (upper end) is bent at an acute angle downward. The inner handrail 27 is held by bending both ends into the holes 15 a of the flange 15.

  As shown in FIGS. 3, 4, and 5, the landing stage scaffold 21 includes a landing stage bracket 30 that is stretched on the upper end portion of the adjacent support member 9, and a stage portion 31 that is formed on the landing stage bracket 30. And a handrail portion 32 provided outside the stage portion 31. The stage portion 31 includes two parent pipes 33 installed in parallel on the landing bracket 30 at intervals, a plurality of rolling pipes 34 installed on the parent pipe 33 at intervals, and a rolling pipe 34. It is comprised from the scaffolding board 35 laid on the top. Moreover, the handrail part 32 is comprised from the main pillar 36 which consists of the angle material erected at the front-end | tip of the landing bracket 30, and the handrail rod 37 which consists of a round tube extended in a horizontal direction. Two handrail rods 37 are arranged in parallel, are pin-joined to the upper end portion and the middle portion of the two main pillars 36, respectively, and are installed between the two main pillars 36.

  Next, the construction method of the vent facility 1 having the above configuration will be described.

  First, as shown in FIG. 1 and FIG. 2, the process of laying the girder 2 on the ground G and assembling the lowermost frame member 8 on the girder 2 is performed. Specifically, two spar 2 is laid in parallel at a predetermined position on the ground G, and three support members 9 are erected on the top surface of the spar 2 with a predetermined interval. At this time, a base jack or the like may be interposed between the support member 9 and the spar 2. And the horizontal joint 10 is each arrange | positioned between the upper end part and the lower end part of the support | pillar member 9 which adjoin the axial direction of the cross girder 2 and the direction orthogonal to the cross girder 2 respectively, The gusset plates 12 formed on the upper and lower end portions are respectively pin-joined. Similarly, two braces 11 are arranged in an X shape between adjacent strut members 9, and both ends of the brace 11 are respectively pin-bonded to the gusset plate 12 to form the strut members 9 and the horizontal joints 10. The breath 12 is fitted into the rectangular frame.

  Next, the process of forming the work floor 14 inside the lowermost frame member 8 is performed. Specifically, the horizontal member 16 is disposed between the intermediate portions of the column members 9 adjacent to each other in the direction orthogonal to the spar 2, and the horizontal member 16 is placed in the hole 15 a formed in the flange portion 15 of the column member 9. The horizontal members 16 are installed by inserting the pins 16a respectively formed at both ends, and three horizontal members 16 are arranged in parallel at intervals. Then, an anti 18 and a scaffold plate 19 are bridged between the horizontal members 16 to form a first-stage work floor 14.

  Moreover, the process of attaching the staircase member 20 to the outer side of the frame member 8 is performed. Specifically, the staircase bracket 22 is attached to the lower end portion of one of the adjacent strut members 9 and the staircase bracket 22 is attached to the upper end portion of the other strut member 9. These stair brackets 22 are struts by superimposing the joints 24 of the stair brackets 22 on the gusset plates 12 projecting outside of the gusset plates 12 formed on the upper and lower ends of the strut members 9 and bolting them. Attach to member 9. Then, the staircase frame 23 is disposed between the hooked portions 25 of the two staircase brackets 22, the claws 23 a provided at both ends of the staircase frame 23 are hung on the hooked portions 25, and the staircase frame 23 is installed. . In addition, the main pillar 28 is preliminarily welded to stand at the front end of the stair bracket 22, and two handrail bars 29 extending in an oblique direction between the two main pillars 28 are arranged in parallel. The outer handrail 24 is assembled by pin-joining the upper end portion and the intermediate portion of the column 28, respectively.

  Next, a second-stage frame member 8 is formed on the ground G, a stair member 20 is attached to the outside of the frame member 8, a work floor 14 is formed inside the frame member 8, and the frame member The process of attaching the landing stage scaffold 21 to the outside of 8 is performed. Specifically, the second frame member 8 is assembled on the ground in the same manner as the assembly procedure of the lowermost frame member 8 described above. The stair member 20 and the work floor 14 are also attached on the ground in the same manner as the lowermost stair member 20 and the work floor 14 described above. The staircase member 20 is formed on an extension line of the staircase member 20 attached to the lowermost frame member 8.

  In addition, the landing brackets 30 are respectively attached to the upper ends of the adjacent strut members 9, and two parent pipes 33 are installed on the two landing brackets 30 in parallel with an interval between them. Three rolling pipes 34 are installed in parallel at intervals, and a scaffold plate 35 is laid on the rolling pipe 34 to assemble the landing scaffold 21. The landing bracket 30 is attached to the support member 9 by bolting to the gusset plate 12 projecting outward from the gusset plate 12 formed at the upper end of the support member 9. Further, the main pillar 36 is preliminarily welded to stand at the tip of the landing bracket 30, and two handrail bars 37 extending in the horizontal direction are arranged in parallel between the two main pillars 36. The handrail portion 32 is assembled by pin joining to the upper end portion and the intermediate portion of the main pillar 36. In addition, the landing scaffold 21 is connected to the upper end of the staircase member 20 attached to the second-stage frame member 8.

  Next, a step of laminating the second frame member 8 assembled on the ground on the lowermost frame member 8 is performed. Specifically, the second frame member 8 is lifted using a crane or the like and placed on the lowermost frame member 8 assembled on the spar 2. At this time, the second stage frame member 8 is aligned so that the joint plate 13 at the upper end of the lowermost column member 9 and the joint plate 13 at the lower end of the second column member 9 are overlapped, and the joint plate The strut members 9 are connected by bolting 13 together.

  The frame member 8 is assembled on the ground, and the process of attaching the work floor 14 and the stair member 20 to the frame member 8 and the process of laminating the frame member 8 are repeated to construct the bowl-shaped frame support 3. . The landing stage scaffolding 21 is installed every other layer and is formed so as to be bridged between the staircase members 20 that are separated from each other. The staircase member 20 and the landing stage scaffolding 21 are spirally formed around the frame support 3. It is formed. Further, the inner handrail 27 is also attached sequentially every time the frame members 8 are stacked. After the uppermost frame member 8 is stacked, the top column member 9a is connected to the upper end of the uppermost column member 9, and the pillow girder 4 is bridged between the upper ends of the adjacent top column members 9a.

  According to the vent equipment 1 having the above-described configuration, the frame support 3 is provided with the stair member 20 that can be lifted up and down easily and safely, so that the worker can easily and safely use the stair member 20. It is possible to move up and down in the framework support 3. Moreover, since the staircase member 20 is provided outside the frame supporter 3, when an operator moves up and down using the staircase member 20, there is nothing that can be an obstacle above the head, and it can be moved up and down smoothly. Therefore, even when the worker has equipment or materials, the worker can easily move up and down, and the workability of the worker can be improved. Further, since the staircase member 20 is simply attached to the frame support 3, there is no need to separately assemble a frame scaffold or the like for the lifting equipment, equipment for raising and lowering the worker is easily formed, and the vent equipment 1 is a high-rise building. Even in this case, it is possible to provide a facility that is safe and easy to move up and down with little effort and low cost.

  In addition, the frame support 3 is formed by laminating a plurality of frame members 8 formed in a frame shape, and a work floor 14 located at a substantially central height of the frame member 8 is formed inside the frame member 8. Therefore, when the upper frame member 8 is arranged on the lower frame member 8, the work floor 14 of the lower frame member 8 is surrounded by the horizontal joint 10 and the brace 11 of the frame member 8. Therefore, the lower work floor 14 which is a work place for the worker who bolts the lower column member 9 and the upper column member 9 is formed with safety equipment in advance, with the horizontal joint 10 and the brace 11 serving as handrails. Will be. Thereby, falling from the work floor 14 can be prevented, and safety can be improved.

  In addition, the frame support 3 is provided with a landing platform 21 that spans a plurality of staircase members 20 provided at intervals, so that the frame support 3 does not enter the frame support 3 and passes through the landing platform 21. It is possible to move between the staircase members 20, and it is easy to move up and down using a plurality of staircase members 20 provided at intervals. Thereby, it can raise / lower smoothly and workability | operativity can be improved.

  Moreover, according to the construction method of the vent equipment 1 having the above-described configuration, the frame member 8 is formed, the step member 20 is attached to the outside of the frame member 8, and the work floor 14 is provided inside the frame member 8. Since the forming step and the step of forming the frame support 3 by laminating the frame members 8 assembled on the ground are provided, the step members 20 are sequentially formed in the process of stacking the frame members 8. Therefore, when the frame members 8 are stacked, the worker can smoothly move between the upper and lower work floors 14 and workability is improved. Moreover, since the operation | work which assembles the frame member 8 is performed on the ground before laminating | stacking, the height work at the time of constructing the frame support construction 3 decreases. Thereby, safety can be improved.

  The embodiment of the vent facility and the construction method thereof according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, in the above-described embodiment, the staircase member 20 is configured by the staircase bracket 22 and the staircase frame 23 having the claws 23a that are hung on the staircase bracket 22 at both ends. May be formed integrally with each other, or the staircase frame may be welded to the staircase bracket without a claw. In the above-described embodiment, the outer handrail 26 composed of the main pillar 28 erected at the tip of the staircase bracket 22 and the handrail rod 29 pin-joined to the parent pillar 28 is assembled at the assembly site. However, the present invention may use a step member provided with an outer handrail. Thereby, the work at the site is reduced and the working time can be shortened.

  Further, in the above-described embodiment, the work floor 14 is formed by assembling the horizontal member 16 and the tread board 17, and the tread board 17 is configured by the anti 18 and the scaffold board 19. The base material 16 and the footboard 17 may be formed integrally, the footboard 17 may be formed by only one of the anti 18 or the footing board 19, and of course, a wooden footing board may be used. In the above-described embodiment, the stage portion 31 forming the landing platform 21 is formed by assembling the parent pipe 33, the rolling pipe 34, and the scaffold plate 35, and the handrail portion 32 is replaced with the parent pillar 36 and the handrail rod 37. However, in the present invention, a ready-made stage member may be used, or a stage member provided with a handrail portion may be used. Furthermore, a landing bracket may be formed integrally with the stage portion. Thereby, the work at the site is reduced and the working time can be shortened.

It is the whole elevation view for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method. It is the whole elevation view for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method. It is a partial side view for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method. It is a partial side view for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method. It is a top view for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method. It is the fragmentary figure of the strut member edge part for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method. It is a fragmentary figure of the column member central part for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method. It is a top view between AA shown in FIG. 3 for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method. (A), (b) is detail drawing of the support | pillar member center part for demonstrating embodiment of the vent equipment which concerns on this invention, and its construction method.

Explanation of symbols

1 Vent equipment 3 Frame support 6 Floor slab block (bridge member)
7 Prop 8 Frame member 14 Work floor 20 Stair member 21 Landing scaffold

Claims (4)

In a vent facility provided with a frame support having a plurality of columns that temporarily support a bridge member,
A venting facility characterized in that a staircase member is attached to the outside of the frame support work. The vent facility according to claim 1,
The frame support is formed by laminating a plurality of frame members formed in a frame shape, and a work floor located at a substantially central height of the frame member is formed inside the frame member. Vent equipment characterized by that. The vent facility according to claim 1 or 2,
A venting facility characterized in that the frame support is provided with a landing platform spanned between the plurality of stair members provided at intervals. In the construction method of the vent equipment in any one of Claim 1 to 3,
A method for constructing a vent facility, comprising: forming the frame member; attaching the step member to the frame member; and forming a frame support by stacking the plurality of frame members.

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