JP2021152304A - Method for constructing equipment shelf - Google Patents

Abstract

To improve the workability of the lower layer in the equipment shelf having the lower layer and the upper layer.SOLUTION: The method for constructing an equipment shelf includes a lower layer arrangement step of arranging a lower layer 30 of an equipment shelf 20 under an upper layer 50 of the lifted equipment shelf 20, an upper and lower layer connecting step of suspending the upper layer 50 on the lower layer 30 and connecting the lower layer 30 and the upper layer 50, and an equipment shelf mounting step of lifting the connected lower layer 30 and upper layer 50 and attaching them to a ceiling beam 14.SELECTED DRAWING: Figure 5

Description

The present invention relates to a method of constructing an equipment shelf.

A construction method in which a pipe is attached to the lower surface of a steel structure frame installed in a high place is known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 4-237761

By the way, when the equipment shelf composed of a plurality of layers is installed in a high place, for example, it is conceivable to build the lower layer and the upper layer of the equipment shelf in order on the floor and then lift the equipment shelf to the high place.

However, in this case, since the upper layer is built on the lower layer, the construction accuracy required for the lower layer is high, and the construction of the lower layer may take time and effort.

In consideration of the above facts, an object of the present invention is to improve the workability of the lower layer in an equipment shelf having a lower layer and an upper layer.

The method of constructing the equipment shelf according to claim 1 includes a lower layer arranging step of arranging the lower layer of the equipment shelf under the upper layer of the suspended equipment shelf, and the upper layer on the lower layer. It includes an upper and lower layer connecting step of suspending and connecting the lower layer and the upper layer, and an equipment shelf mounting step of lifting the connected lower layer and the upper layer and attaching them to a support.

According to the method of constructing the equipment shelf according to claim 1, in the lower layer arranging step, the lower layer of the equipment shelf is arranged under the upper layer of the suspended equipment shelf. Next, in the upper and lower layer connecting steps, the upper layer is suspended above the lower layer, and the lower layer and the upper layer are connected. Next, in the equipment shelf mounting process, the connected lower layer and upper layer are lifted and attached to the support.

As described above, in the present invention, in the upper and lower layer connecting steps, the upper layer is suspended above the lower layer, and the lower layer and the upper layer are connected. Therefore, in the present invention, the building accuracy required for the lower layer is relaxed as compared with the case where the upper layer is built on the lower layer. Therefore, the workability of the lower layer is improved.

The method of constructing the equipment shelf according to claim 2 is the method of constructing the equipment shelf according to claim 1, wherein the equipment is installed in the lower layer in the lower layer arranging step, and in the upper and lower layer connecting step. The upper layer is suspended above the equipment, and the lower layer and the upper layer are connected to each other.

According to the method of constructing the equipment shelf according to claim 2, in the lower layer arranging process, the equipment is installed in the lower layer, and in the upper and lower layer connecting process, the upper layer is suspended above the equipment, and the lower layer and the upper layer are hung. And concatenate.

Thereby, in the present invention, the equipment can be easily installed on the lower layer as compared with the case where the equipment is installed on the lower layer after connecting the upper layer to the lower layer.

The method for constructing the equipment shelf according to claim 3 is the method for constructing the equipment shelf according to claim 1 or 2, wherein at least one of the upper layer and the lower layer is supported by a temporary support member, and the temporary installation is performed. At least one of the upper layer and the lower layer is lifted or lowered by the hanging material attached to the support member.

According to the construction method of the equipment shelf according to claim 3, at least one of the upper layer and the lower layer is supported by the temporary support member, and at least one of the upper layer and the lower layer is supported by the hanging material attached to the temporary support member. To be lifted or lowered.

Here, for example, when the rigidity of the upper layer or the lower layer is small, if a suspending material is attached to the upper layer or the lower layer and lifted, the upper layer or the lower layer may be deformed by its own weight. Further, if the number of hanging materials to be attached to the upper layer or the lower layer is increased in order to suppress the deformation due to the own weight of the upper layer or the lower layer, it takes time and effort to attach the hanging materials.

On the other hand, in the present invention, as described above, at least one of the upper layer and the lower layer is supported by the temporary support member, and at least one of the upper layer and the lower layer is lifted by the suspending material attached to the temporary support member. Or hang it down. Therefore, by increasing the rigidity of the temporary support member, it is possible to suppress the deformation of the upper layer or the lower layer without increasing the number of suspension members.

The method for constructing the equipment shelf according to claim 4 is the method for constructing the equipment shelf according to any one of claims 1 to 3, in which the upper layer formed under the support is lifted. The upper layer lifting step is provided, and in the lower layer arranging step, the lower layer is grounded under the upper layer lifted in the upper layer lifting step.

According to the method of constructing the equipment shelf according to claim 4, in the upper layer lifting step, the upper layer formed under the support is lifted. Next, in the lower layer arranging step, the lower layer is grounded under the upper layer lifted in the upper layer lifting step. As a result, the lower layer is arranged below the upper layer.

By forming the lower layer under the suspended upper layer in this way, for example, the upper layer and the lower layer can be formed even when the construction space is narrow.

As described above, according to the method of constructing the equipment shelf according to the present invention, it is possible to improve the workability of the lower layer in the equipment shelf having the lower layer and the upper layer.

It is an elevation view which shows the structure which installed the equipment shelf which concerns on one Embodiment. It is a cross-sectional view taken along the line 2-2 of FIG. FIG. 3 is a cross-sectional view taken along the line 3-3 of FIG. It is an elevation view which shows the construction process of the equipment shelf shown in FIG. It is an elevation view which shows the construction process of the equipment shelf shown in FIG. It is an elevation view which shows the construction process of the equipment shelf shown in FIG. It is an enlarged cross-sectional view corresponding to FIG. 2 which shows the construction process of the equipment shelf shown in FIG. It is an elevation view which shows the construction process of the equipment shelf shown in FIG.

(Equipment shelf)
First, the configuration of the equipment shelf constructed by the construction method of the equipment shelf according to the embodiment will be described.

FIG. 1 shows a structure 10 including an equipment shelf 20 according to the present embodiment. The structure 10 is, for example, a large space structure such as a theater or a concert hall. Inside the structure 10, a hall (hall) 18 on which a stage or the like (not shown) is installed is formed.

The structure 10 has a pillar 12 and a ceiling beam (roof beam) 14 erected on the pillar 12. The ceiling beam 14 has a truss structure (truss beam) having an upper chord member 14A, a lower chord member 14B, a bundle member 14C, and a diagonal member 14D. An equipment shelf 20 is installed under the ceiling beam 14. The ceiling beam 14 is an example of a support.

(Equipment shelf)
The equipment shelf 20 is a hanging shelf (incidental steel frame) suspended from the ceiling beam 14. Further, the equipment shelf 20 is arranged above the hall 18. The equipment shelf 20 has an upper and lower two-layer structure, and has a lower layer 30 and an upper layer 50.

In the present embodiment, the lower layer 30 and the upper layer 50 are connected to the pillar 12 of the structure 10 via the connecting beam 22, but the lower layer 30 and the upper layer 50 are not connected to the pillar 12. Is also good.

For example, stage equipment 24 (see FIG. 2) is installed in the lower layer 30. On the other hand, equipment such as an air conditioning duct (not shown) is installed in the upper layer 50. Further, the lower layer 30 and the upper layer 50 are also used as maintenance spaces for equipment 24 and the like, for example. In addition, in FIG. 1 and the like, the illustration of the equipment 24 is omitted.

(Lower layer)
The lower layer 30 has a grid-shaped lower shelf member 32 in a plan view, and a plurality of lower hanging members 40 that suspend and support the lower shelf member 32. As shown in FIG. 2, the lower shelf member 32 has a plurality of beams (steel beam) 32A joined in a grid pattern in a plan view. The plurality of beams 32A are formed of, for example, steel frame members such as H-shaped steel.

A plurality of flooring materials 34 are laid on the lower shelf member 32. The plurality of flooring materials 34 are formed of, for example, C-shaped steel, and are arranged at intervals in a slatted shape. For example, stage equipment 24 is installed on these flooring materials 34. The floor material 34 can be omitted.

As shown in FIG. 3, the lower suspension member 40 has a pair of columnar members 42. The pair of columnar members 42 are formed of C-shaped steel and are arranged back to back. The lower end of the lower hanging member 40 is connected to the lower shelf member 32. The columnar member 42 is not limited to the C-shaped steel, and may be formed of, for example, an H-shaped steel.

More specifically, the lower shelf member 32 is provided with a connecting bracket 36 arranged between the lower ends of the pair of columnar members 42. By tightening the lower end portion of the pair of columnar members 42 and the connecting bracket 36 together with the bolt 44 and the nut, the lower end portion of the lower hanging member 40 is connected to the lower shelf member 32.

The upper end of the lower suspension member 40 is connected to the upper shelf member 52, which will be described later. More specifically, the upper shelf member 52 is provided with a connecting bracket 54 arranged between the upper ends of the pair of columnar members 42. By tightening the upper end portion of the pair of columnar members 42 and the connecting bracket 54 together with the bolt 44 and the nut, the upper end portion of the lower suspension member 40 is connected to the upper shelf member 52.

(Upper layer)
The upper layer 50 has a grid-shaped upper shelf member 52 in a plan view, and a plurality of upper hanging members 60 that suspend and support the upper shelf member 52. The upper shelf member 52 has a plurality of beams (steel frame beams) 52A joined in a grid pattern in a plan view. The plurality of beams 52A are formed of, for example, steel frame members such as H-shaped steel. For example, an air conditioning duct (not shown) is installed on the upper shelf member 52.

In the present embodiment, the floor plate is not provided on the upper shelf member 52, but the floor material may be provided on the upper shelf member 52.

The plurality of upper suspension members 60 have a pair of columnar members 62. The pair of columnar members 62 are formed of C-shaped steel and are arranged back to back. The lower end of the upper hanging member 60 is connected to the upper shelf member 52. The columnar member 62 is not limited to the C-shaped steel, and may be formed of, for example, an H-shaped steel.

More specifically, the upper shelf member 52 is provided with a connecting bracket 56 arranged between the lower ends of the pair of columnar members 62. By tightening the lower end portion of the pair of columnar members 62 and the connecting bracket 56 together with the bolt 64 and the nut, the lower end portion of the upper suspension member 60 is connected to the upper shelf member 52.

The upper end of the upper suspension member 60 is connected to the ceiling beam 14. More specifically, the lower chord member 14B of the ceiling beam 14 is provided with a connecting bracket 16 arranged between the upper ends of the pair of columnar members 62. By tightening the upper end portion of the pair of columnar members 62 and the connecting bracket 16 together with the bolt 64 and the nut, the upper end portion of the upper suspension member 60 is connected to the lower chord member 14B.

(Installation method of equipment shelves)
Next, an example of the construction method of the equipment shelf will be described.

(Upper layer placement process)
First, as shown in FIG. 4, in the upper layer arrangement process, the upper layer 50 of the equipment shelf 20 is assembled in the construction space below the installation location of the equipment shelf 20. Specifically, the upper shelf member 52 of the upper layer 50 and the plurality of upper hanging members 60 are grounded on the pedestal 70 installed on the floor 19 below the mounting portion of the ceiling beam 14 to which the equipment shelf 20 is attached. At this time, a plurality of temporary support members 72 (see FIG. 7) formed of H-shaped steel or the like are installed under the upper shelf member 52.

The gantry 70 may be provided as needed and may be omitted as appropriate. It is also possible to assemble the upper layer 50 on the scaffolding or the work floor temporarily provided on the floor 19.

(Upper layer lifting process)
Next, in the upper layer lifting step, the upper shelf member 52 is installed on the temporary support member 72. Next, a plurality of lifting devices 80 are installed on the ceiling beam 14, and the lifting member 82 of the lifting device 80 is attached to the temporary support member 72. Next, as shown in FIG. 5, the temporary support member 72 and the upper layer 50 are lifted to a predetermined height by the lifting device 80.

The predetermined height of the upper layer 50 is set so that a construction space (installation space) for the lower layer 30 can be secured below the suspended upper layer 50. Further, the lifting device 80 is, for example, a jack type.

(Lower layer placement process)
Next, in the lower layer arranging step, the lower layer 30 is grounded under the lifted upper layer 50. Specifically, the lower shelf member 32 of the lower layer 30 and the plurality of lower hanging members 40 are grounded on the floor 19 below the lifted upper layer 50. At this time, as shown in FIG. 2, the bolts 44 and nuts connecting the connecting bracket 36 of the lower shelf member 32 and the lower ends of the pair of columnar members 42 of the lower hanging member 40 are temporarily fastened, and the lower hanging member 40 And the lower shelf member 32 are connected so as to be relatively displaceable. In addition, the equipment 24 is installed on the lower shelf member 32 that has been grounded.

(Upper and lower layer connection process)
Next, as shown in FIG. 6, in the upper and lower layer connecting steps, the upper layer 50 is suspended above the equipment 24 (see FIG. 7) already installed in the lower layer 30 by a plurality of lifting devices 80, and the lower layer is lowered. 30 and the upper layer 50 are connected.

Specifically, as shown in FIG. 7, the upper shelf member 52 is positioned with respect to the plurality of lower suspension members 40, and the upper shelf member is located between the upper ends of the pair of columnar members 42 of the lower suspension member 40. Insert the connecting bracket 54 of 52. Then, the upper ends of the pair of columnar members 42 and the connecting bracket 54 are fastened together with the bolt 44 (see FIG. 2) and the nut. At this time, the bolts 44 and nuts are temporarily fastened, and the upper shelf member 52 and the lower suspension member 40 are connected so as to be relatively displaceable.

Next, the upper layer 50 is lifted by the lifting device 80 (see FIG. 6) until the lower layer 30 is cut off. Here, when the upper layer 50 is lifted, the plurality of lower shelf members 40 are suspended substantially vertically from the upper shelf member 52, and the lower shelf members 32 connected to the lower ends of the plurality of lower shelf members 40 are substantially horizontal. Become a posture. That is, the lower suspension member 40 and the lower shelf member 32 are positioned with respect to the upper layer 50.

In this state, the bolts 44 and nuts at the upper end of the lower suspension member 40 are fully tightened, and the bolts 44 and nuts at the lower end of the lower suspension member 40 are finally tightened to displace the upper layer 50 and the lower layer 30 relative to each other. Unable to connect (fix). As a result, the accuracy of building the lower layer 30 and the upper layer 50 is improved.

(Equipment shelf installation process)
Next, as shown in FIG. 8, in the equipment shelf mounting process, the lower layer 30 and the upper layer 50 are lifted to just below the ceiling beam 14 by a plurality of lifting devices 80, and the lower chord member 14B of the ceiling beam 14 is lifted. A plurality of upper suspension members 60 are positioned. Then, as shown in FIGS. 2 and 3, a plurality of upper suspension members 60 are joined to the lower chord member 14B with bolts or the like.

Next, as shown in FIG. 1, the lower layer 30, the upper layer 50, and the pillar 12 are connected via the connecting beam 22. After that, the temporary support member 72 and the lifting device 80 are removed. As a result, the equipment shelf 20 is constructed.

(effect)
Next, the effect of this embodiment will be described.

According to the equipment shelf construction method according to the present embodiment, in the upper layer lifting process, the upper layer 50 is lifted in the construction space below the installation location of the equipment shelf 20. Next, in the lower layer arranging step, the lower layer 30 is grounded under the lifted upper layer 50.

By grounding the lower layer 30 under the upper layer 50 lifted in this way, for example, the upper layer 50 and the lower layer 30 can be grounded even when the construction space is narrow.

Further, in the present embodiment, in the upper and lower layer connecting steps, the upper layer 50 is suspended above the lower layer 30, and the lower layer 30 and the upper layer 50 are connected. Therefore, in the present embodiment, the building accuracy required for the lower layer 30 is relaxed as compared with the case where the upper layer 50 is built on the lower layer 30. Therefore, the workability of the lower layer 30 is improved.

Further, in the present embodiment, in the lower layer arranging step, the equipment 24 is installed in the lower layer 30, and in the upper and lower layer connecting steps, the upper layer 50 is suspended above the already installed equipment 24 to form the lower layer 30. The upper layer 50 is connected.

As a result, in the present embodiment, the equipment 24 is easily installed on the lower layer 30 as compared with the case where the equipment 24 is installed on the lower layer 30 after the upper layer 50 is connected to the lower layer 30. be able to.

Further, as described above, in the present embodiment, in the upper and lower layer connecting steps, the upper layer 50 and the lower layer 30 are lifted in a state where the upper layer 50 and the lower layer 30 are connected (temporarily fastened) so as to be relatively displaceable. , The lower layer 30 is positioned with respect to the upper layer 50. After that, the upper layer 50 and the lower layer 30 are connected (fixed) so as not to be relatively displaceable. Thereby, the lower layer 30 and the upper layer 50 can be easily positioned.

Here, for example, when the rigidity of the upper layer 50 is small, if the suspending member 82 is attached to the upper layer 50 and lifted, the upper layer 50 may be deformed by its own weight. Further, if the number of the hanging members 82 to be attached to the upper layer 50 is increased in order to suppress the deformation of the upper layer 50 due to its own weight, it takes time and effort to attach the hanging members 82.

On the other hand, in the present embodiment, as described above, the upper layer 50 is supported by the temporary support member 72, and the upper layer 50 is lifted or lowered by the suspending member 82 attached to the temporary support member 72. Therefore, by increasing the rigidity of the temporary support member 72, it is possible to suppress the deformation of the upper layer 50 without increasing the suspension member 82.

(Modification example)
Next, a modified example of the above embodiment will be described.

In the above embodiment, the equipment 24 is installed on the lower shelf member 32 in the lower layer arrangement process. However, in the lower layer arranging process, the equipment 24 is not installed on the lower shelf member 32, for example, after connecting the lower layer 30 and the upper layer 50, the equipment 24 is installed on the lower shelf member 32. Is also good. Further, after attaching the equipment shelf 20 to the ceiling beam 14, the equipment 24 may be installed on the lower shelf member 32.

Further, in the above embodiment, in the upper layer arranging process, the upper layer 50 is grounded below the installation location of the equipment shelf 20. However, for example, the upper layer 50 assembled at a place other than below the installation place of the equipment shelf 20 may be arranged after being moved below the installation place of the equipment shelf 20.

Further, in the above embodiment, in the lower layer arranging step, the lower layer 30 is grounded under the lifted upper layer 50. However, for example, the lower layer 30 assembled at a place other than under the lifted upper layer 50 may be placed after being moved under the lifted upper layer 50.

Further, in the above embodiment, the upper layer 50 is supported by the temporary support member 72, and the upper layer 50 is lifted or lowered by the hanging member 82 attached to the temporary support member 72. However, at least one of the upper layer 50 and the lower layer 30 is supported by the temporary support member 72, and at least one of the upper layer 50 and the lower layer 30 is lifted or lowered by the suspending member 82 attached to the temporary support member 72. You may.

Further, the temporary support member 72 may be omitted, and the upper layer 50 or the lower layer 30 may be lifted or lowered by the hanging member 82 directly attached to the upper layer 50 or the lower layer 30.

Further, the equipment shelf 20 of the above embodiment has an upper and lower two-layer structure of an upper layer 50 and a lower layer 30. However, the equipment shelf may have, for example, an upper and lower three-layer structure of an upper layer, a middle layer, and a lower layer. In this case, for example, after the middle layer is built under the suspended upper layer, the upper layer and the middle layer are connected. Next, after building the lower layer under the connected upper layer and middle layer, the middle layer and the lower layer are connected. Next, the connected upper layer, middle layer, and lower layer are lifted and attached to the support. As a result, a three-layered equipment shelf can be constructed.

Further, the configurations of the upper layer 50 and the lower layer 30 can be changed as appropriate. For example, the lower suspension member 40 may reinforce the lower suspension member 40 adjacent to the pillar with a beam, a brace, or the like.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate. Of course, it can be carried out in various modes as long as it does not deviate.

14 Ceiling beam (support)
20 Equipment shelf 24 Equipment 30 Lower layer 50 Upper layer 72 Temporary support member 82 Suspension material

Claims (4)

A lower layer arranging process for arranging the lower layer of the equipment shelf under the upper layer of the suspended equipment shelf, and a process of arranging the lower layer.
An upper and lower layer connecting step of suspending the upper layer on the lower layer and connecting the lower layer and the upper layer.
The equipment shelf mounting process of lifting the connected lower layer and the upper layer and attaching them to the support,
Construction method of equipment shelves equipped with. In the lower layer arranging process, equipment is installed in the lower layer, and
In the upper and lower layer connecting steps, the upper layer is suspended above the equipment, and the lower layer and the upper layer are connected.
The method for constructing an equipment shelf according to claim 1. At least one of the upper layer and the lower layer is supported by the temporary support member, and at least one of the upper layer and the lower layer is lifted or lowered by the suspending material attached to the temporary support member.
The method for constructing an equipment shelf according to claim 1 or 2. The upper layer lifting process for lifting the upper layer which was grounded below the support is provided.
In the lower layer arranging step, the lower layer is grounded under the upper layer lifted in the upper layer lifting step.
The method for constructing an equipment shelf according to any one of claims 1 to 3.

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