JPH10317566A - Stock freezer construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the excavating volume of ground and thus reduce the work volume so as to save labor, increase work efficiency, and increase the work quality by eliminating the formation of a working space under a floor slab. SOLUTION: A support structural body 9 is constructed and set in an underfloor area YR formed on the underside 6a of a floor slab 6 of a cold storage 1 to be constructed so as to form a concrete deposited space. Also an adiabatic material 7a and a moistureproof material 30 are set in the concrete deposited space of the support structural body 9 along the support structural body 9 in stratified form condition, and concrete is deposited into the concrete deposited space so that the adiabatic material 7a and moistureproof material 30 are held between the support structural body 9 so as to construct a foundation structural body 3 and the floor slab 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a refrigerated warehouse suitable for constructing a refrigerated warehouse having a heat insulating material and a moisture-proof material on the lower surface side of a floor slab or the like.

[0002]

2. Description of the Related Art In a refrigerated warehouse, it is known that it is necessary to provide heat insulation and moisture proofing for floor slabs and the like. For this reason, heat insulating materials and moisture-proof materials are installed on the floor slab. However, in rack-building automatic warehouses, it is difficult to install heat insulating materials and moisture-proof materials on the floor slab because it is necessary to install rack posts on the floor slab. Met. In addition, a method of sandwiching insulation and moisture-proof material in the frame of the floor slab is also conceivable, but this does not integrate the slab and the foundation, and it is difficult to treat the horizontal force structurally when installing the rack. become. Therefore,
A method of installing a heat insulating material and a moisture proof material on the lower surface side of a floor slab or the like has been proposed and implemented.

FIG. 5 is a sectional view showing a freezing warehouse constructed by a conventional method. For example, as shown in FIG. 5, the freezing warehouse 50 as a refrigerated warehouse includes a footing (not shown) supported on a pile (not shown) constructed underground, an underground beam connecting the footings, and the like. It has a base structure 51, and a structure main body 52 in which an article storage space 52a is formed is erected on the base structure 51 so as to be arranged on the ground side. The structure main body 52 has a floor slab 53 supported on the substructure 51.

A heat insulating material 5 such as urethane is provided on the lower surface 53a of the floor slab 53 and the side surface 51a of the substructure 51.
Floor insulation layer 55 and moisture proof material 5 formed by spraying 5a
7 are installed in a conventional manner. The installation of the floor heat insulating material layer 55 and the moisture proof material 57 first completes the construction of the substructure 51 and the floor slab 53, and then the underfloor space 5 surrounded by the substructure 51 and the floor slab 53.
After removing the formwork for the substructure 51 and the floor slab 53 using the form 6, an operator enters the underfloor space 56 and the lower surface 53 of the floor slab 53 from which the formwork has been removed.
a and a side surface 51a of the substructure 51 is sprayed with a heat insulating material 55a in a layered manner, and a moisture proof material 57 is formed along the formed floor heat insulating material layer 55.
Is going to be laid.

[0005]

In a refrigerated warehouse, an air layer for ventilation is generally formed below the floor slab in order to prevent the ground from freezing up. However, the above-mentioned conventional method is adopted. In this case, since the worker enters the underfloor space 56 to perform work, the air space for ventilation described above is too small, so that a large working space needs to be formed in the underfloor space 56. However, in order to form such a large work space, the amount of excavation of the ground increases, the amount of work increases, the amount of discharged earth and sand increases, and it takes time to process the work. Further, since it is necessary for the worker to enter the underfloor space 56 which is very narrow as compared with the space on the ground side to perform the work, the work efficiency is low, and it is difficult to improve the work quality. Further, since the worker enters the underfloor space 56 to perform the work, the underfloor space 56 needs to be ventilated for the work, and this ventilation work is troublesome.

In view of the above circumstances, the present invention does not require the formation of a work space below the floor slab when constructing a refrigerated warehouse by installing a heat insulating material and a moisture proof material on the floor slab. Reduce the amount of excavation, thereby reducing the amount of work and labor, and also increase the work efficiency,
An object of the present invention is to provide a method for constructing a refrigerated warehouse that can improve the quality of work.

[0007]

That is, the present invention comprises a foundation structure (3) constructed on the ground (2) and a floor slab (6) connected and supported on the foundation structure (3). A lower floor area (YR) is provided on the lower surface (6a) side of the floor slab (6).
Is formed in such a form that its sides are surrounded by the substructure (3), and a layer is formed on the side of the substructure (3) and the floor slab (6) facing the underfloor region (YR). When constructing a refrigerated warehouse (1) having a heat insulating material (7a) and a moisture-proof material (30) laid on a floor, a lower surface (6a) side of the floor slab (6) of the refrigerated warehouse (1) to be constructed. A concrete casting space (CD) is formed by constructing and installing a formwork structure (9) in a form corresponding to the underfloor region (YR) formed in the concrete structure. On the casting space (CD) side, a heat insulating material (7a) and a moisture-proof material (30) are installed in layers along the formwork structure (9), and concrete is placed in the concrete casting space (CD). The heat insulating material (7a) and the moisture proof material (30) are interposed by the mold structure (9). Nde in the form of support so as to pouring, configured so as to construct basic structure (3) and the floor slabs (6).

Note that the numbers in parentheses and the like are for convenience showing corresponding elements in the drawings, and therefore, the present description is not limited to the description on the drawings. The same applies to the following “action” column.

[0009]

According to the present invention, the heat insulating material (7)
a) and the installation of the moisture proof material (30) are performed from the concrete casting space (CD) side of the formwork structure (9), that is, from the ground side.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a freezing warehouse constructed by the method of the present invention, and FIGS. 2 to 4 are views showing each step of constructing the freezing warehouse shown in FIG.

FIG. 1 shows a refrigerated warehouse 1 which is an example of a refrigerated warehouse (in this specification, the name "refrigerated warehouse" refers to a space in which articles can be kept cool, that is, a refrigerated room (for example, a frozen room). The present invention is used as a general term for a warehouse equipped with a freezer compartment (for example, a C-class one that is stored in a frozen state), a freezer compartment (for example, a lower-grade one that is stored in a frozen state), and so on. In addition to (1), it can be applied to a refrigerated warehouse having a refrigeration room.) The freezing warehouse 1 includes a footing (not shown) supported on a pile (not shown) constructed in the ground 2, and a substructure 3 consisting of an underground beam 3a connected between the footings. On the structure 3, a structure main body 5 in which an article storage space 5a, which is a freezing room, is formed, is erected on the ground side. Since the freezing warehouse 1 of the present embodiment is a freezing warehouse which is a rack-building type automatic warehouse, a rack (not shown) formed by assembling a plurality of rack posts (not shown) is installed in the article storage space 5a. ing. The structure body 5 is supported on the substructure 3 by a floor slab 6.
Therefore, an underfloor region YR is formed on the lower surface side of the floor slab 6 so that the horizontal direction is surrounded by the substructure 3 (only one underfloor region YR is shown in FIG. 1). However, as another embodiment, for example, when the underground beams 3a are arranged in a lattice pattern, a plurality of underfloor regions YR are formed.)

The lower surface 6a of the lower surface of the floor slab 6 facing the underfloor region YR, the side surface 3b of the substructure 3 facing the underfloor region YR, and the lower surface 3 of the substructure 3
A floor heat insulating material layer 7 formed of a heat insulating material 7a is installed in c and the like. Further, the floor insulation layer 7 provided on the lower surface 6a of the floor slab 6 and the side surface 3b of the substructure 3 is formed along the surface of the floor insulation layer 7 on the side of the underfloor region YR, and thus under the floor. A support structure 9 used as a disposal form is provided so as to surround the horizontal sides and the upper side of the region YR. That is, the portion of the support structure 9 corresponding to the side surface 3b of the substructure 3 is composed of the block form 10 supported by the ground 2 and assembled in a vertical wall shape. The portion corresponding to the lower surface 6a of the floor slab 6 is formed of a horizontal deck plate 11 supported by the block formwork 10. The floor insulation layer 7
The sheet-shaped moisture-proof material 30 (iron plate,
Sheet panel). In addition, a ventilation pipe 31 is formed in the underfloor area YR and communicates with an air layer sandwiched between the deck plate 11 and the ground 2 and the ground.
However, as shown in FIG. 1, the substructure 3, the floor insulation layer 7,
It is installed so as to penetrate the moisture-proof material 30, the block formwork 10, and the like. The air layer and the ventilation pipe 31 prevent the floor slab 6 and the like from being frozen.

The construction of the refrigerated warehouse 1 configured as described above is performed as follows. First, as shown in FIG. 2, the ground 2 is excavated to form an excavation space 20 to the extent necessary for constructing the foundation structure 3 and the like, and piles (not shown) are constructed in the ground 2. Then, the block formwork 10 of the above-described support structure 9 is assembled and constructed at a predetermined position in the excavation space 20 (a position corresponding to the substructure 3 to be constructed) so as to be supported on the ground 2. The block form 10 is
The underfloor region YR formed so as to be surrounded by the substructure 3 to be constructed and the floor slab 6 was constructed so as to be surrounded from the side. As a result, a concrete casting space CD corresponding to the substructure 3 to be constructed was formed on the side of the block formwork 10 facing away from the underfloor region YR. Then, the bottom 20a of the excavation space 20 and the side surface 10 of the block formwork 10 in the concrete placing space CD
A moisture proof material 30 is laid on a, and a heat insulating material 7a such as urethane is sprayed along the laid moisture proof material 30 to install a continuous floor heat insulating material layer 7. Note that the above-described ventilation pipe 31 is installed at this time (in FIGS. 2 to 4, the illustration of the ventilation pipe 31 is omitted for simplicity).

Next, as shown in FIG. 3, a backfill soil material 21 is appropriately installed at a position along the block formwork 10 in an area surrounded by the block formwork 10 (under-floor area YR). The block form 10 is designed to be supported from the inside. Then, after reinforcing is performed on a portion of the concrete casting space CD already surrounded by the floor heat insulating material layer 7 and the like, the installed floor heat insulating material layer 7 is supported by the block form 10 with the floor heat insulating layer 7 interposed therebetween. Cast concrete in shape. As a result, a substructure 3 comprising a footing (not shown) supported on a pile (not shown) already constructed and an underground beam 3a connected between the footings is constructed. Thereafter, the deck plate 11 is supported and installed on the block formwork 10 as shown in FIG. 3 to complete the support structure 9. Upper surface 11a of deck plate 11
On the side, another concrete casting space CD corresponding to the floor slab 6 to be built was formed.

Next, the upper surface 11a of the deck plate 11
A heat insulating material 7a is sprayed along the laid moistureproof material 30 to lay a floor heat insulating material layer 7 as shown in FIG. 4, and the heat insulating material 30 is already laid along the side surface 10a of the block formwork 10. It is continued to the installed floor heat insulating material layer 7. After that, a predetermined portion of the concrete casting space CD formed on the deck plate 11 is provided with reinforcing bars and the like, and then the concrete is supported by the deck plate 11 with the installed floor heat insulating material layer 7 interposed therebetween. Is installed. Thereby, as shown in FIG. 1, the floor slab 6 is constructed in a state of being connected to the substructure 3 already constructed. Thus floor slab 6
The floor heat insulating material layer 7 is provided on the lower surface 6a side of the
And floor slab 6 were constructed and installed.

After that, a rebar arrangement work and a concrete placing work are performed on the substructure 3 to construct and complete a structure main body 5 having an article storage space 5a formed therein on the ground side, (In this embodiment, since the support structure 9 including the block formwork 10 and the deck plate 11 is used as a waste formwork, the support structure 9 is completed after the construction of the substructure 3 and the floor slab 6 is completed.) Although the structure 9 is not removed, a form structure that can be removed after the completion of the construction of the base structure 3 and the floor slab 6 can be employed in addition to the support structure 9. ).

As described above, in the present embodiment, the heat insulating material 7a and the moisture proof material 30 can be installed from the concrete placing space CD side of the support structure 9, that is, from the ground side. In addition, there is no need for an operator to enter a space such as the underfloor space 56 formed in the underfloor region to install a heat insulating material or a moisture proof material. In other words, the installation of the heat insulating material 7a and the moisture proof material 30 can be performed on the ground side where a sufficient work space can be secured and work is easy, so that work efficiency can be improved and work quality can be improved. Further, since it is not necessary for the worker to enter the space such as the underfloor space 56 and perform the work of installing the heat insulating material or the like, ventilation of the space on the side of the underfloor region YR is unnecessary at least when the work of installing the heat insulating material 7a or the like is performed. It takes less time. Further, it is not necessary to form a space, such as the underfloor space 56, having a size large enough for a worker to enter and perform work in the underfloor region YR (if there is an air layer enough to provide ventilation for preventing frost heave). Therefore, the amount of excavation of the ground 2 is reduced, and the amount of work can be reduced as much as possible. In addition, the amount of discharged earth and sand is reduced by that much, and it is not necessary to take time for the treatment. Further, in the present embodiment, the support structure 9 is not required to be removed after the construction of the base structure 3 and the floor slab 6 is completed, so that it is not necessary to remove the support structure 9 and the worker enters the space formed in the underfloor area YR to perform the removal operation. There is no need to do it, and you don't have to.

The construction method according to the present invention includes (a) construction and installation of a mold structure such as the support structure 9 and formation of a concrete casting space CD, and (b) heat insulating material 7a and moisture proofing for the mold structure. Installation of material 30, (c) Concrete casting space CD
A series of work consisting of placing concrete into
By performing at least once in the order of (a), (b), and (c), the substructure 3 and the floor slab 6 are constructed. In the embodiment described above, the operations of (a), (b), and (c) are performed once in this order at the site of the substructure 3, and thereafter, at the site of the floor slab 6, (a),
An example is shown in which the operations of (b) and (c) are performed once in this order to construct the substructure 3 and the floor slab 6. As another embodiment, for example, in a combination of a substructure 3 and a floor slab 6, (a)
The operations of (b) and (c) are performed once in this order (for example, the entire support structure 9 is constructed at one time, the heat insulating material 7a and the moisture proof material 30 are installed at one time, and the substructure 3 and The concrete for the floor slab 6 may be cast at one time), the substructure 3 and the floor slab 6 may be constructed, or (a), (b),
The operation of (c) is performed once in this order, and the operations of (a), (b), and (c) are performed once in this order in the upper half of the substructure 3. (A),
The operations of (b) and (c) may be performed once in this order to construct the substructure 3 and the floor slab 6, or may be performed in various other orders.

[0019]

As described above, the present invention provides a base structure such as a base structure 3 constructed on the ground such as the ground 2, and the like.
A floor slab such as a floor slab 6 connected and supported on the foundation structure is provided, and an underfloor area such as an underfloor area YR is provided on the lower surface side of the lower surface 6a and the like of the floor slab, and sides of the floor slab are defined by the foundation structure. A freezing warehouse formed in an enclosed form and having a heat insulating material such as a heat insulating material 7a and a moisture proof material such as a moisture proof material 30 laid in layers on the side of the substructure facing the underfloor region in the substructure and the floor slab. When constructing a refrigerated warehouse such as 1, a form structure such as a support structure 9 is constructed and installed in a form corresponding to the underfloor region formed on the lower surface side of the floor slab of the refrigerated warehouse to be constructed. Forming a concrete casting space such as a concrete casting space CD, and installing a heat insulating material and a moisture-proof material in layers along the form structure on the concrete casting space side of the form structure; Put concrete in the concrete casting space The mold structure, so as to pouring in the form of support in between said thermal insulating material and moisture-proof material,
It is configured to build a substructure and a floor slab. Therefore, when the method of the present invention is adopted, the heat insulating material and the moisture proof material can be installed along the form structure from the concrete casting space side of the form structure, that is, from the ground side, so that the conventional method is used. There is no need for an operator to enter a space, such as the underfloor space 56 formed in the underfloor area, to install a heat insulating material and a moisture proof material. In other words, there is no need to form a work space for the installation of the heat insulating material and the moisture proof material under the floor slab,
The amount of excavation in the ground can be reduced, thereby reducing the amount of work and saving labor. In addition, the installation of the heat insulating material and the moisture proof material can be performed on the ground side (for example, the space on the smallest floor such as the first floor above the ground) where a sufficient working space can be secured and the work can be easily performed. Can be improved. Further, since it is not necessary for the worker to enter the space such as the underfloor space 56 and perform the work of installing the heat insulating material and the moisture proof material, the ventilation of the space such as the underfloor space 56 is required at least when the work of installing the heat insulating material and the like is performed. Is no longer necessary, and it does not take much time.

[Brief description of the drawings]

FIG. 1 is a sectional view of a freezer warehouse constructed by the method of the present invention.

FIG. 2 is a diagram showing one process of constructing the freezing warehouse shown in FIG. 1;

FIG. 3 is a diagram showing another process different from FIG. 2;

FIG. 4 is a diagram showing another process different from FIGS. 2 and 3;

FIG. 5 is a sectional view showing a freezing warehouse constructed by a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Refrigerated warehouse (freezing warehouse) 2 ... Ground 3 ... Foundation structure (foundation structure) 6 ... Floor slab 6a ... Lower surface 7a ... Insulation material 9 ... Formwork structure (support structure) 30 ... Moisture proof material CD ... Concrete casting space YR ... Underfloor area

Claims (1)

[Claims] An underfloor region is provided on a lower surface side of a floor slab which is connected and supported on the foundation structure, and a floor structure is provided on a side of the floor slab. When building a refrigerated warehouse having a heat insulating material and a moisture proof material laid in layers on the side of the substructure facing the underfloor area of the substructure and the floor slab, Constructing and installing a formwork structure in a form corresponding to the underfloor area formed on the lower surface side of the floor slab of the refrigerated warehouse to form a concrete casting space; On the space side,
A heat insulating material and a moisture-proof material are installed in layers along the formwork structure, and concrete is supported in the concrete casting space by the formwork structure with the heat-insulating material and the moisture-proof material interposed therebetween. A method of constructing a refrigerated warehouse configured to cast a base structure and a floor slab by casting.