JP7438806B2 - Construction method for equipment shelves - Google Patents

Description

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

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

Japanese Patent Application Publication No. 4-237761

By the way, when installing an equipment shelf consisting of multiple layers at a high place, for example, it is conceivable to erect the lower layer and the upper layer of the equipment shelf in order on the floor and then lift the equipment shelf to a high place.

However, in this case, since the upper layer is built on top of the lower layer, the construction accuracy required for the lower layer is high, and the construction of the lower layer may be time-consuming.

The present invention takes the above facts into consideration and aims to improve the workability of the lower layer in an equipment shelf having a lower layer and an upper layer.

The construction method of the equipment shelf according to the first aspect includes a lower layer arrangement step of arranging the lower layer of the equipment shelf below the upper layer of the lifted equipment shelf, and suspending the upper layer above the lower layer. The method includes an upper and lower layer connecting step of lowering 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 equipment shelf construction method according to the first aspect , in the lower layer arrangement step, the lower layer of the equipment shelf is arranged below the upper layer of the lifted equipment shelf. Next, in the upper and lower layer connection step, the upper layer is suspended above the lower layer to connect the lower layer and the upper layer. Next, in the equipment shelf installation step, the connected lower and upper layers are lifted and attached to a support.

As described above, in the present invention, in the upper and lower layer connection step, the upper layer is suspended above the lower layer to connect the lower layer and the upper layer. Therefore, in the present invention, the accuracy required for building the lower layer is relaxed compared to the case where the upper layer is built on top of the lower layer. Therefore, the workability of the lower layer is improved.

A method for constructing an equipment shelf according to a second aspect is such that in the method for constructing an equipment shelf according to the first aspect , in the lower layer arrangement step, equipment is installed in the lower layer, and in the upper and lower layer connecting step, the equipment is The upper layer is suspended on top of the upper layer to connect the lower layer and the upper layer.

According to the construction method of the equipment shelf according to the second aspect , in the lower layer arrangement step, equipment is installed on the lower layer, and in the upper and lower layer connection step, the upper layer is suspended on top of the equipment, and the lower layer and the upper layer are Connect with.

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

A method for constructing an equipment shelf according to a third aspect is a method for constructing an equipment shelf according to the first aspect or the second aspect , in which at least one of the upper layer and the lower layer is supported by a temporary support member, and the temporary support member At least one of the upper layer and the lower layer is lifted up or lowered by a hanging member attached to the.

According to the construction method of the equipment shelf according to the third aspect , 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. lifting or lowering.

Here, for example, when the rigidity of the upper layer or the lower layer is small, when a hanging material is attached to the upper layer or the lower layer and the layer is lifted, the upper layer or the lower layer may be deformed by its own weight. Furthermore, if the number of hanging materials to be attached to the upper layer or the lower layer is increased in order to suppress deformation of the upper layer or the lower layer due to its own weight, the work of attaching the hanging materials becomes laborious.

In contrast, in the present invention, as described above, at least one of the upper layer and the lower layer is supported by a temporary support member, and at least one of the upper layer and the lower layer is suspended by a hanging material attached to the temporary support member. Or hang it down. Therefore, by increasing the rigidity of the temporary support member, deformation of the upper layer or the lower layer can be suppressed without increasing the number of hanging materials.

A method for constructing an equipment shelf according to a fourth aspect is a method for constructing an equipment shelf according to any one of the first to third aspects , wherein the upper layer is lifted up from the upper layer assembled below the support. The method includes a lifting step, and in the lower layer arrangement step, the lower layer is assembled under the upper layer lifted in the upper layer lifting step.

According to the method for constructing an equipment shelf according to the fourth aspect , in the upper layer lifting step, the upper layer assembled below the support is lifted. Next, in the lower layer arrangement step, the lower layer is assembled under the upper layer lifted in the upper layer lifting step. Thereby, the lower layer is arranged below the upper layer.

By assembling the lower layer below the lifted upper layer in this manner, the upper layer and the lower layer can be assembled, for example, even if the construction space is narrow.

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

FIG. 1 is an elevational view showing a structure in which an equipment shelf according to an embodiment is installed. 2 is a sectional view taken along line 2-2 in FIG. 1. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. FIG. 2 is an elevational view showing the construction process of the equipment shelf shown in FIG. 1; FIG. 2 is an elevational view showing the construction process of the equipment shelf shown in FIG. 1; FIG. 2 is an elevational view showing the construction process of the equipment shelf shown in FIG. 1; FIG. 3 is an enlarged cross-sectional view corresponding to FIG. 2 showing the construction process of the equipment shelf shown in FIG. 1; FIG. 2 is an elevational view showing the construction process of the equipment shelf shown in FIG. 1;

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

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

The structure 10 includes columns 12 and ceiling beams (roof beams) 14 installed on the columns 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 this ceiling beam 14. Note that the ceiling beam 14 is an example of a support.

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

Note that in this embodiment, the lower layer 30 and the upper layer 50 are connected to the pillars 12 of the structure 10 via the connecting beams 22, but the lower layer 30 and the upper layer 50 do not need to be connected to the pillars 12. 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, for example, as a maintenance space for the equipment 24 and the like. In addition, illustration of the equipment 24 is omitted in FIG. 1 and the like.

(lower layer)
The lower layer 30 includes a lattice-shaped lower shelf member 32 in 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 beams) 32A joined in a grid shape when viewed from above. The plurality of beams 32A are formed of steel members such as H-beams, for example.

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

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

More specifically, the lower shelf member 32 is provided with a connecting bracket 36 disposed between the lower end portions of the pair of columnar members 42 . The lower ends of the lower hanging members 40 are connected to the lower shelf members 32 by tightening the lower ends of the pair of columnar members 42 and the connecting brackets 36 together with bolts 44 and nuts.

The upper end of the lower hanging member 40 is connected to an upper shelf member 52, which will be described later. More specifically, the upper shelf member 52 is provided with a connecting bracket 54 disposed between the upper end portions of the pair of columnar members 42 . The upper ends of the lower hanging members 40 are connected to the upper shelf members 52 by tightening the upper ends of the pair of columnar members 42 and the connecting brackets 54 together with bolts 44 and nuts.

(upper layer)
The upper layer 50 includes an upper shelf member 52 having a lattice shape 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 beams) 52A joined in a grid shape in a plan view. The plurality of beams 52A are formed of steel members such as H-beams, for example. For example, an air conditioning duct (not shown) or the like is installed above the upper shelf member 52.

Note that in this embodiment, a floorboard is not provided on the upper shelf member 52, but a flooring 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 made of C-shaped steel and are arranged back to back. The lower end of this upper hanging material 60 is connected to the upper shelf member 52. Note that the columnar member 62 is not limited to C-shaped steel, and may be formed of, for example, H-shaped steel.

More specifically, the upper shelf member 52 is provided with a connecting bracket 56 disposed between the lower end portions of the pair of columnar members 62. The lower ends of the upper hanging members 60 are connected to the upper shelf member 52 by tightening the lower ends of the pair of columnar members 62 and the connecting bracket 56 together with bolts 64 and nuts.

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 disposed between the upper end portions of the pair of columnar members 62. By tightening the upper ends of the pair of columnar members 62 and the connecting bracket 16 together with bolts 64 and nuts, the upper end of the upper suspension member 60 is connected to the lower chord member 14B.

(Construction method for equipment shelves)
Next, an example of a method of constructing an equipment shelf will be described.

(Upper layer arrangement process)
First, as shown in FIG. 4, in the upper layer arrangement step, the upper layer 50 of the equipment shelf 20 is assembled in a 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 suspension members 60 are assembled on the pedestal 70 installed on the floor 19 below the attachment part 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) made of H-shaped steel or the like are installed under the upper shelf member 52.

Note that the pedestal 70 may be provided as necessary and can be omitted as appropriate. It is also possible to assemble the upper layer 50 on a scaffold or work floor temporarily installed 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 hanging members 82 of the lifting devices 80 are 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 up to a predetermined height by the lifting device 80.

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

(Lower layer arrangement process)
Next, in the lower layer arrangement step, the lower layer 30 is assembled under the lifted upper layer 50. Specifically, the lower shelf member 32 of the lower layer 30 and the plurality of lower hanging materials 40 are assembled on the floor 19 below the lifted upper layer 50. At this time, as shown in FIG. 2, the bolts 44 and nuts that connect 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. Moreover, the equipment 24 is installed on the assembled lower shelf member 32.

(Upper and lower layer connection process)
Next, as shown in FIG. 6, in the upper and lower layer connection process, the upper layer 50 is suspended above the equipment 24 (see FIG. 7) already installed on the lower layer 30 by a plurality of lifting devices 80, and the lower layer 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 hanging members 40, and the upper shelf member 52 is placed between the upper ends of the pair of columnar members 42 of the lower hanging members 40. 52 connection bracket 54 is inserted. Then, the upper ends of the pair of columnar members 42 and the connection bracket 54 are tightened together with bolts 44 (see FIG. 2) and nuts. At this time, the bolts 44 and nuts are temporarily fastened to connect the upper shelf member 52 and the lower hanging material 40 so that they can be relatively displaced.

Next, the upper layer 50 is lifted up 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 hanging materials 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 hanging materials 40 are suspended approximately horizontally. It becomes a posture. That is, the lower hanging material 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 hanging material 40 are fully tightened, and the bolts 44 and nuts at the lower end of the lower hanging material 40 are fully tightened, causing the upper layer 50 and the lower layer 30 to be relatively displaced. To connect (fix) in an impossible way. This improves the accuracy of how the lower layer 30 and the upper layer 50 are constructed.

(Equipment shelf installation process)
Next, as shown in FIG. 8, in the equipment shelf installation process, the lower layer 30 and the upper layer 50 are lifted up to just below the ceiling beam 14 using a plurality of lifting devices 80, and are placed against the lower chord member 14B of the ceiling beam 14. 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 members 14B using bolts or the like.

Next, as shown in FIG. 1, the lower layer 30 and the upper layer 50 are connected to the columns 12 via the connecting beams 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 effects of this embodiment will be explained.

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

By assembling the lower layer 30 under the upper layer 50 lifted in this manner, it is possible to assemble the upper layer 50 and the lower layer 30, for example, even if the construction space is narrow.

Further, in the present embodiment, in the upper and lower layer connection step, the upper layer 50 is suspended on the lower layer 30 to connect the lower layer 30 and the upper layer 50. Therefore, in this embodiment, compared to the case where the upper layer 50 is built on the lower layer 30, the accuracy of the construction method required for the lower layer 30 is relaxed. Therefore, the workability of the lower layer 30 is improved.

Furthermore, in this embodiment, the equipment 24 is installed on the lower layer 30 in the lower layer arrangement process, and the upper layer 50 is suspended above the already installed equipment 24 in the upper and lower layer connection process, and The upper layer 50 is connected.

As a result, in this embodiment, the equipment 24 is easily installed on the lower layer 30, compared to 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.

Furthermore, as described above, in the present embodiment, in the upper and lower layer connection process, the upper layer 50 and the lower layer 30 are lifted up while the upper layer 50 and the lower layer 30 are connected (temporarily fastened) so as to be relatively displaceable. , position the lower layer 30 with respect to the upper layer 50. Thereafter, the upper layer 50 and the lower layer 30 are connected (fixed) so that they cannot be relatively displaced. 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 low, when the hanging material 82 is attached to the upper layer 50 and the upper layer 50 is lifted, the upper layer 50 may be deformed by its own weight. Furthermore, if the number of hanging members 82 attached to the upper layer 50 is increased in order to suppress deformation of the upper layer 50 due to its own weight, the work of attaching the hanging members 82 becomes laborious.

In contrast, in this 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 hanging material 82 attached to the temporary support member 72. Therefore, by increasing the rigidity of the temporary support member 72, deformation of the upper layer 50 can be suppressed without increasing the number of hanging members 82.

(Modified example)
Next, a modification of the above embodiment will be described.

In the embodiment described above, the equipment 24 was installed on the lower shelf member 32 in the lower layer arrangement step. However, in the lower layer arrangement process, the equipment 24 is not installed on the lower shelf member 32, but, for example, the equipment 24 is installed on the lower shelf member 32 after connecting the lower layer 30 and the upper layer 50. Also good. Further, after the equipment shelf 20 is attached 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 arrangement step, the upper layer 50 is assembled below the installation location of the equipment shelf 20. However, for example, the upper layer 50 assembled at a location other than below the installation location of the equipment shelf 20 may be moved below the installation location of the equipment shelf 20 and then placed.

Further, in the above embodiment, the lower layer 30 was assembled under the lifted upper layer 50 in the lower layer arrangement step. However, for example, the lower layer 30 assembled at a location other than under the lifted upper layer 50 may be moved and placed under the lifted upper layer 50.

Further, in the embodiment described above, the upper layer 50 is supported by the temporary support member 72, and the upper layer 50 is lifted up or lowered by the hanging material 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 hanging material 82 attached to the temporary support member 72. It's okay.

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

Moreover, the equipment shelf 20 of the embodiment described above has a two-layer structure including an upper layer 50 and a lower layer 30. However, the equipment shelf may have, for example, a three-layer structure including an upper layer, a middle layer, and a lower layer. In this case, for example, after the middle layer is built under the lifted upper layer, the upper layer and the middle layer are connected. Next, after building the lower layer under the connected upper and middle layers, the middle and lower layers are connected. Next, the connected upper layer, middle layer, and lower layer are lifted and attached to a support. With this, it is possible to construct an equipment shelf with a three-layer structure.

Further, the configurations of the upper layer 50 and the lower layer 30 can be changed as appropriate. For example, the lower suspension members 40 may be reinforced with beams, braces, or the like between adjacent pillars.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and the embodiment and various modifications may be used in combination as appropriate, and the gist of the present invention may be It goes without saying that the invention can be implemented in various ways without departing from the scope.

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

Claims (4)

A lower tier in which the lower tier of the equipment shelf is arranged below the upper tier of the equipment shelf that has been lifted , the lower tier including a lower shelf member and a lower hanging material that suspends and supports the lower shelf member. layer arrangement process;
an upper and lower layer connecting step of suspending the upper layer on the lower layer and connecting the lower hanging material and the upper layer;
an equipment shelf installation step of lifting the connected lower layer and the upper layer and attaching them to a support;
A construction method for an equipment shelf equipped with. In the lower layer arrangement step, installing equipment in the lower layer,
In the upper and lower layer connection step, suspending the upper layer onto the equipment and connecting the lower hanging material and the upper layer;
A method for constructing an equipment shelf according to claim 1. At least one of the upper layer and the lower layer is supported by a temporary support member, and at least one of the upper layer and the lower layer is lifted or lowered by a hanging material attached to the temporary support member.
A method for constructing an equipment shelf according to claim 1 or 2. an upper layer lifting step of lifting the upper layer assembled below the support;
In the lower layer arrangement step, the lower layer is assembled below 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.