JP2003306952A - Unit type metallic underground structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a remarkable reduction of construction period of time as a whole and greatly reduce a material cost and a construction cost by omitting or simplifying the foundation work of a unit type metallic underground garage excellent in structural safety and durability. <P>SOLUTION: A plurality of box type units 1 forming a set of divided units 1U, 1D having two upper and lower U-shaped rigid frame structures separated along a horizontal face and fabricated in a factory are carried into the construction site in the disassembled condition of the upper and lower divided units 1U, 1D. The respective upper and lower division units 1U, 1D are stacked and assembled into the box type unit 1 having a square shaped rigid frame structure in the shorter side direction. The adjacent box type units 1, 1 are connected to construct the underground garage UG with a specified depth and displacement preventive concrete 12 is placed in such a thickness that each floor structure body 2F is embedded in the bottom of the lower division unit 1D of each floor structure body 2F constituting the underground garage unit UG. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for an underground garage constructed mainly by embedding the whole or a part of it in the ground. In addition to the underground garage, an area under the floor of a residential building, a garden or a carport. The present invention relates to a unit-type metallic underground structure that can be applied to a basement to expand a living space or secure a storage space for storing various items by embedding it in the ground such as below.

[0002]

2. Description of the Related Art As a unit type metallic underground structure of this type, the present inventor, as seen in Japanese Patent Application No. 7-273350, has a metallic outer plate such as a steel plate on the outside of a plurality of core steel frames. A box-type unit is constructed by assembling a panel-shaped wall structure, ceiling structure, and floor structure that are fixed to each other to form a □ type rigid frame structure in the short side direction and an earthquake-resistant wall structure in the long side direction. Produced, brought in a plurality of box-type units that were made by this factory to the construction site and arranged them in rows, and by adjoining adjacent units, it was possible to construct a garage skeleton with a desired depth dimension. Proposing an underground garage.

Further, the inventor of the present invention has disclosed, for example, Japanese Patent No. 3149.
As the successful acquisition of the patent right in No. 019 etc., while the metal outer plate is fixed to the outer side of the plurality of core steel frames,
A wall formed with a heat insulating layer at least in a space surrounding the core steel frame and in contact with the outer plate in a space between an inner plate fixed to a wooden base provided inside the core steel frame and a metal outer plate Assembling the structure, ceiling structure and floor structure to make a box type unit with a □ type ramen structure in the short side direction in the factory, and bring in a plurality of box type units that are the works of this factory to the construction site and bring them underground. We have already proposed a unit-type metal basement that can be embedded in a row in a row and can be constructed by joining box-type units together to construct a basement body with a predetermined depth dimension.

In these unit type metallic underground structures proposed by the present inventor, in both the underground garage and the basement, as shown in FIG. 8, a base composed of rubble stones 20 and discarded concrete 21. An anchor bolt 2 is constructed on the part 22 by on-site construction of a reinforced concrete foundation 23 with or without a base plate 24 on the reinforced concrete foundation 23.
By fixing the floor structure 28 constituting the box type unit 27 with 5 and the nuts 26, the box type unit 27, that is, the garage structure or the basement structure is prevented from moving due to earth pressure or buoyancy. Was there.

[0005]

The unit type metallic underground structure proposed by the present inventor such as an underground garage or a basement having the above-mentioned structure is a reinforced concrete or steel-framed underground structure which is conventionally used in the field. Compared with structures, there is very little construction work on the construction site, which not only shortens the construction period and saves construction costs, but also has a certain depth dimension even in the narrow land often found in urban areas. It is possible to construct structures efficiently. In addition, since the box type unit with excellent structural safety is used as a frame, with a □ type rigid frame structure in the short side direction and an earthquake resistant wall structure in the long side direction, large soil that is added to the unit under underground condition is used. It has many advantages such as having sufficient strength to withstand pressure and water pressure.

However, in the case of the unit type metallic underground structure already proposed by the present inventor, in order to prevent movement due to earth pressure or the like, assembly of a temporary frame, reinforcement bar arrangement, concrete placement, anchor bolts and It is indispensable to have a lot of time and labor at the site, such as tightening connection with nuts, and foundation work using a large number of temporary materials and consumable materials. There was a limit to the reduction of the cost, and there was room for improvement in this respect. In addition, since a tall unit manufactured in a box shape at the factory was carried into the construction site as it was, the height limit for road transportation (generally,
It is about 00 mm. ), The maximum height of the box type unit (product) itself is also limited, and a large truck is required to transport this large box type unit to the construction site. A large crane with a large boom extension is required when unloading from the platform or on-site construction work, which increases transport costs and construction work costs. Furthermore, when unloading from a truck bed or during construction work, the unit lifted by a large crane easily interferes with electric wires and other obstacles around the site, or easily shakes due to the influence of wind, etc. Therefore, there was still a need for improvement in terms of ensuring the safety of a series of operations.

The present invention has been made in view of the above circumstances, and in addition to the advantages of the unit type,
It is possible to significantly simplify the foundation work and reduce the cost of transportation and construction work at the site, and it is possible to achieve a significantly shortened construction period and a significant cost reduction as a whole. It is an object of the present invention to provide a unit-type metallic underground structure having excellent safety and durability.

[0008]

In order to achieve the above object, the unit type metallic underground structure according to the present invention is a wall structure in which a metallic outer plate is fixed to the outside of a plurality of core steel frames. By assembling the ceiling structure and the floor structure and dividing the box type unit configured in the □ type rigid frame structure in the short side direction along the horizontal plane at the middle part of the wall structure, there are two U-shaped top and bottom. It is divided into units with a ramen structure and manufactured in a factory, and a plurality of box-type units that make up the upper and lower two divided units as one set are brought into the construction site with the upper and lower two divided units being disassembled, A plurality of lower division units having a floor structure are arranged in a row in an upwardly open state and installed on a flat concrete surface, and a plurality of upper division units having a ceiling structure are downwardly opened. In parallel with each other and stacking them on the lower split unit, and by vertically joining the upper and lower split units in each box unit together with the ends of the wall structures in both split units abutting against each other, a plurality of box units can be shortened respectively. An □ type rigid frame structure is installed in the side direction, and an earthquake-resistant wall structure is assembled in the long side direction, and adjacent box-type units are joined to each other to construct an underground structure of a predetermined depth. It is characterized in that concrete for preventing movement of underground structures is placed at the bottom of each lower split unit of the plurality of box-shaped units that make up the floor structure of each split unit so as to be buried. To do.

According to the present invention having the above-described structure, the box-shaped unit is divided into two upper and lower units having a U-shaped rigid frame structure and is factory-manufactured. Just by carrying it to the site, assembling the upper and lower split units, and joining the assembled adjacent box-type units together, a simple construction work is performed, with the □ type ramen structure in the short side direction and the long side direction. In addition, it is possible to efficiently construct an underground structure with a predetermined depth dimension, which has a high strength and excellent structural safety, called an earthquake-resistant wall structure. In addition, by placing concrete with a thickness at which the floor structure of each of the box units is buried in the bottom of each of the lower box units of the multiple box-type units assembled at the site, earth pressure and buoyancy Constituting a pressure board to prevent movement of underground structures, assembling temporary frames, arranging reinforcing bars, placing concrete, and tightening and connecting with anchor bolts and nuts. It is possible to omit or significantly simplify the on-site foundation work using timber. By combining the simplification of these construction methods with the omission or significant simplification of foundation work, conventional general concrete or steel-framed underground structures that have been constructed by full-site construction including foundation work In comparison, the construction period can be significantly shortened and the material cost and construction cost can be significantly reduced.

In addition, according to the present invention, the box type unit, which is to be formed into a □ type rigid frame structure in the short side direction, is divided along the horizontal plane at the middle portion of the wall structure to form two upper and lower U-shaped rigid frame structures. Since they are divided into units, when they are transported to the construction site, the two divided units are offset by the thickness of the wall structure and overlapped to make it easier to transport and transport than the case of a single box type unit. It is possible to lower the height (height) at the time of unloading at the construction site and erection work, which enables transportation by a small truck and unloading by a small crane, and erection work. It is possible to further reduce the total cost from transportation to completion of construction, and the unit lifted by a crane interferes with obstacles such as electric wires around the site, There is, no longer be or shake the influence of the wind, etc., it is possible to perform the unloading or built how to work easily and safely. Furthermore, since the height of each unit handled during transportation and construction work is low, it is possible to freely set the maximum height of the box-type unit after construction is completed, regardless of the height limit for road transportation. .

In the unit type metal underground structure according to the present invention, when manufacturing a divided unit having two upper and lower U-shaped rigid frame structures, horizontal division is made at any position in the middle portion of the wall structure in the box type unit. However, in particular, as described in claim 2, it is preferable to divide along the horizontal plane at an intermediate portion corresponding to ½ of the height dimension of the wall structure in the box type unit. In this case, since the two split units are congruent, only one type of split unit needs to be manufactured (mass production), and the manufacturing cost can be further reduced, and the two split units can be connected to the wall structure. When they are stacked by shifting the thickness of the box type unit, the overall height can be halved to one half that of the box type unit, and the safety during transportation can be further enhanced.

Further, in the unit type metallic underground structure according to the present invention, as a means for fixing and joining two upper and lower divided units in each box type unit,
As described in, tightening both plate members with bolts with a waterproof sealing material sandwiched between metal plate members fixed to the end of the core steel frame that constitutes the wall structure in both split units. By adopting the means for fixing and joining by the above, it is possible to favorably secure the waterproofness of the joint portion between the box-type units.

Further, in the unit type metallic underground structure according to the present invention, as described in claim 4, a wall structure, a ceiling structure and a floor structure in the upper and lower split units of each box type unit. Each of the metal outer plates is made by bending a single metal plate into a U-shape to form a single body. Compared to the case where the outer plates are individually fixed to the outside of the core steel frame, the amount of fixing work such as welding during manufacturing in the factory and its inspection work are reduced, and work at high places during temporary assembly of each structure is also performed. Without it, it is possible to improve the safety at the time of assembling and manufacturing in the factory and significantly reduce the cost.

Further, as the unit type metallic underground structure to which the present invention is applied, an underground garage in which the whole or a part is embedded in the ground is optimal as described in claim 5, As described in claim 6, the basement may be wholly or partially embedded in the ground. However, when targeting the basement, a heat insulating layer is provided in the space between the metal outer plate and the inner plate provided inside the core steel frame that form the wall structure and the ceiling structure in each box-type unit. It is important to form the basement to enhance the habitability.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an outline of a completed construction state of a metal (steel) underground garage as an example of a unit type metal underground structure according to the present invention, FIG. 2 is its plan view, and FIG. 3 is of FIG. It is a cross-sectional view taken along the line X-X, and a plurality of arbitrary box-type units that are standardized in size and shape at the factory and are manufactured to have the same specifications and structure and have a □ -shaped ramen structure in the short side direction. 1 ... are arranged in a line in the ground in a state where their short sides are continuous and are embedded and fixed, and at the non-joining end of the box-shaped unit 1 at one end in the row direction, a gable wall manufactured separately from the unit 1 is formed. Panel 1
1 is fixed to close the opening, and the unjoined end of the box-type unit 1 at the other end in the row direction is left open to form the vehicle entrance / exit E connected to the inclined road surface SR. A metal (steel) underground garage UG with a dimension D has been constructed.

As shown in FIGS. 1 and 3, the box-type units 1 ... Each of the box-type units 1 has a dividing line along a horizontal plane having an intermediate height corresponding to one half of the height H of the wall structure 2W. It is composed of two upper and lower split units 1U and 1D which are factory-produced into a congruent shape having the same height (H / 2) by being bisected by L.

Of the upper and lower split units 1U and 1D, the upper split unit 1U is assembled in the short side direction by assembling two wall structures 2Wu and one ceiling structure 2C as shown in FIG. Is a U-shaped rigid frame structure, and is structured as a seismic wall structure in the long side direction, while the lower division unit 1D is short by assembling two wall structures 2Wd and one floor structure 2F. It has a U-shaped rigid frame structure in the lateral direction and an earthquake-resistant wall structure in the long side direction.

A wall structure 2 constituting the upper and lower split units 1U and 1D in each of the box-type units 1 ...
Wu, 2Wd, the ceiling structure 2C and the floor structure 2F are channel steels (or H-shaped steels) as clearly shown in FIG.
Is used to fix a metal outer plate 4 such as a steel plate to the outer flange portions 3a of the core steel frames 3 arranged at an appropriate pitch, and the wall structure 2Wu in the upper and lower split units 1U and 1D. ． A metal plate member 8 is provided at each of the end portions of the core members 3 and 3 forming 2Wd on the unit opening side.
u and 8d are fixed by welding or the like, and as shown in FIG. 5, a waterproof sealing material 9 is provided between these plate members 8u and 8d.
Both plate members 8u and 8d with bolts and nuts 10 in between.
The upper and lower split units 1U,
1D can be fixedly joined to the wall structures 2Wu and 2Wd in a state where the end portions of the wall structures 2Wu and 2Wd are butted against each other.

Furthermore, the wall structure 2W of the upper and lower split units 1U and 1D in each box type unit 1 ...
u, 2Wd, each of the metal outer plates 4 constituting the ceiling structure 2C and the floor structure 2F is a U-shaped piece of a metal plate whose width is cut using a remodeling press at the stage of factory production. It is formed into a single unit by bending it into.

A plurality of box-type units 1 factory-manufactured by using the upper and lower split units 1U and 1D as a set each have a structure such as a truck with the upper and lower split units 1U and 1D disassembled. Will be delivered to the construction site. At the time of this loading, the upper and lower two split units 1U and 1D are offset from each other by the thickness of the wall structures 2Wu and 2Wd, as shown in FIG. Is as low as almost half that of the box-type unit 1 built on-site, which makes it possible to carry by a small truck and has high safety during transportation. Without any restrictions, the height of the box type unit 1, and by extension, the underground garage U
It is possible to set the ground clearance of G to any height that does not interfere with the entry and exit of high-roof vehicles. Furthermore, it is possible to use a small crane with a short boom extension length both when unloading from a truck and when constructing at a construction site.
U and 1D will not interfere with obstacles such as electric wires existing around the site, or will not shake due to the influence of wind, etc., and unloading or building work can be performed easily and safely. is there.

Then, in the construction work after being carried into the construction site, the lower division unit 1D side of the plurality of box-type units 1 ... Is arranged in a row in the upward open state and finished flat on the upper part of the quarry stone 14. Installed on the upper surface of the discarded concrete 13, the upper division unit 1U side of each box-type unit 1 ... Is lined up in a row in a downward open state and stacked on the lower division unit 1D, and in each box-type unit 1 ... As shown in FIG. 5, the upper and lower divided units 1D and 1U are fixed to the end portions of the upper and lower divided units 1D and 1U on the unit opening side of the core material steel frames 3 and 3, respectively, and are made of a metal plate member 8u, The upper and lower split units 1U and 1D, in which both plate members 8u and 8d are fastened with bolts and nuts 10 with a waterproof sealing material 9 sandwiched between 8d. By fixedly joining the wall structures 2Wu and 2Wd in a state where the ends are abutted against each other, the box-shaped unit 1 having a □ type rigid frame structure in the short side direction and an earthquake-resistant wall structure in the long side direction is ... By assembling and connecting adjacent ones of the assembled box-type units 1 to each other in a watertight state, a metal (steel) having a predetermined depth dimension D as described above.
Build an underground garage UG.

After the underground garage UG having a predetermined depth dimension D is constructed by the plurality of box-type units 1 ... As described above, the bottom portions of the lower division units 1U of the plurality of box-type units 1 ... This concrete 1 is formed by placing concrete 12 having a thickness in which the floor structure 2F (core steel frame 3 ... and outer plate 4) of each lower split unit 1U is buried, specifically, a thickness of about 300 mm.
2 and each lower division unit 1U constitute a plain pressure plate to prevent the underground garage UG from moving due to earth pressure and buoyancy.

That is, a great deal of time and labor such as assembling a temporary frame, arranging reinforcing bars, placing concrete, tightening and connecting with anchor bolts and nuts, and on-site foundation work using a large number of temporary materials and consumable materials are omitted or significantly It is possible to simplify, and due to the synergy of such omission or significant simplification of the foundation work and the simplification of the above-mentioned construction work, the construction means by the entire site construction including the foundation work was adopted. Compared with conventional general concrete or steel framed underground structures, as well as the unit type metal underground garage proposed by the present inventor, the construction period can be remarkably shortened and the material cost and the construction cost can be significantly reduced.

Further, all the box-type units 1 ... Constituting the underground garage UG have a composite structure of a □ type rigid frame structure in the short side direction and an earthquake-resistant wall structure in the long side direction, and also have a compressive strength and a basic strength. Since it is excellent, it is possible to obtain a subterranean garage UG with excellent safety, earthquake resistance, and durability by sufficiently supporting large earth pressure, water pressure and buoyancy.

In the above embodiment, the underground garage for one vehicle has been described, but an underground garage for two or four vehicles may be constructed using the box type unit 1 having a large frontage dimension. In this case, the unit 1 is divided into not only the upper and lower parts but also the left and right parts into a total of four units with a U-shaped cross-section rigid frame structure, and these four divided units are joined at the construction site and finally in the short side direction. It is desirable to construct the box type unit 1 having a □ type rigid frame structure and a seismic wall structure in the long side direction.

In the above embodiment, the case where the underground garage is used as the underground structure has been described, but the underground room for expanding the living space or securing the storage space for storing various articles may be used. In this case, as shown in FIG. 7, a metal such as a steel plate is formed on the outer flange portion 3a of the core member steel frame 3 forming the wall structure 2W (2Wu, 2Wd) and the ceiling structure 2C of the box-type unit 1. A space between the inner plate 5 and the metal outer plate 4 is fixed by fixing the outer plate 4 to the wooden base plate 6 which is adhesively fixed to the inner flange portion 3b. By using a foamed resin such as urethane foam that is sprayed on-site to form a heat insulating layer 7 at a place surrounding the core steel frame 3 ... While providing the heat insulation required as a storage space, structural safety, similar to an underground garage,
It is possible to build a basement with excellent earthquake resistance and durability. It should be noted that although not shown when targeting the basement,
A plurality of box-type units 1 assembled side by side in a row are fixed to the non-joining ends of the box-type units 1 at both ends in the row direction, and the end walls panel 11 made separately from the unit 1 are fixed to close the openings. There is a need to.

Further, in the above-described embodiment, the upper and lower split units 1U and 1D form the box-type unit 1 along the horizontal plane at an intermediate portion corresponding to one half of the height H of the wall structure. The description has been given on the case where the parts are divided into equal parts and are formed into a congruent shape. It is divided into two parts, and the top and bottom are tall (H
Upper two split units 1 with different (/ 3) and (2H / 3)
You may form in U and 1D. In this case, since the upper and lower split units 1U and 1D are not in the congruent form, it is necessary to prepare two types of split units for the box-type unit 1 alone, and the split unit is divided into two parts. Although advantageous in terms of cost, the height of the unit handled during transportation or construction work can be made lower than that of the box type unit 1, which is effective in reducing transportation costs and construction work costs.

[0027]

As described above, according to the present invention, a plurality of box-shaped units each having a pair of upper and lower split units factory-manufactured by dividing into a U-shaped ramen structure are provided on the construction site. By simply carrying in and assembling the upper and lower split units and joining the assembled adjacent box-type units together, the □ type rigid frame structure in the short side direction and the earthquake-resistant wall structure in the long side direction are required. It is possible to efficiently construct an underground structure with a predetermined depth dimension that has high strength and excellent structural safety, and at the bottom of each lower split unit of a plurality of assembled box units, the floor of each split unit. Simply by placing concrete of a thickness that the structure will be buried, a pressure plate for preventing movement of underground structures due to earth pressure and buoyancy will be constructed, and temporary frame assembly, rebar reinforcement, concrete It is possible to omit or significantly simplify the on-site foundation work using a large number of man-hours such as touring, tightening and connecting with anchor bolts and nuts, and a large number of temporary materials and consumable materials. In addition to the conventional general concrete or steel-framed underground structures where the construction method by full-site construction including the foundation work was adopted due to the synergy between the construction and the omission or remarkable simplification of the foundation work, Compared with the unit type metallic underground structure that the inventor has already proposed, the construction period can be significantly shortened, and the material cost and the construction cost can be significantly reduced.

Further, in the present invention, the box type unit which is to be constructed as a □ type ramen structure is divided along the horizontal plane at the middle portion of the wall structure to be divided into upper and lower U-shaped ramen structure units. Therefore, when transporting to a construction site, the two split units are offset from each other by the thickness of the wall structure so that they overlap each other. It is possible to lower the height (height) at the time of unloading and erection work, which enables transportation by a small truck and unloading by a small crane, and enables erection work, from transportation to completion of construction. In addition to further reducing the total cost of the operation, the unit suspended by the crane may interfere with obstacles such as electric wires around the site, or wind Since it does not shake due to the sound, it can easily and safely perform unloading and building work, and the height of the unit unit handled during transportation and building work is low, so it is a box type after completion of construction. The maximum height dimension of the unit can be freely set without being restricted by the limit height for road transportation.

In the unit type basement having the above-mentioned structure, in particular, a structure as described in claim 2, that is, a structure in which the upper and lower parts are divided into two U-shapes at a position corresponding to one-half of the height dimension. By adopting the two upper and lower split units as a congruent type, only one type of unit needs to be manufactured, the unit manufacturing cost can be reduced, and the height of the entire unit during transportation can be assembled at the construction site. It can be halved to half that of a completed box-type unit, which can further enhance safety during road transportation and on-site construction work.

Further, as described in claim 4, each of the metal outer plates of the wall structure, the ceiling structure and the floor structure of the upper and lower split units in each box type unit is replaced by a single metal plate. Compared to the case where the metal outer plates of the wall, ceiling, and floor structures are individually fixed to the outside of the core steel frame by adopting a configuration in which they are integrally formed by bending in a U shape. In addition to reducing the amount of fixing work such as welding and the inspection work during manufacturing in the factory, there is no work at high places during manufacturing of each structure and temporary assembly, or very few assembly at the factory It is possible to improve the safety during manufacturing and further reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a side view showing an outline of a completed construction state of a metal (steel) underground garage as an example of a unit-type metal underground structure according to the present invention.

FIG. 2 is a plan view of the same unit type underground garage.

3 is a vertical cross-sectional view taken along line XX of FIG.

FIG. 4 is an enlarged vertical cross-sectional view of a main part showing a configuration of a wall, a ceiling, and a floor structure in the split unit.

FIG. 5 is an enlarged vertical sectional front view of a main part showing a joint structure of two upper and lower split units.

FIG. 6 is a schematic front view illustrating an overlapping state of two upper and lower split units during transportation.

FIG. 7 is an enlarged vertical cross-sectional view of a main part showing a configuration of a wall and a ceiling structure in a split unit when a basement as another example of the unit-type metallic underground structure according to the present invention is targeted.

[Explanation of symbols]

1 box type unit 1U upper split unit 1D lower split unit 2Wu, 2Wd wall structure 2C ceiling structure 2F floor structure 3 core material steel frame 4 metal outer plates 5 Wooden interior boards 7 heat insulation layer 8u, 8d metal plate member 9 Waterproof sealing material 12 cast concrete UG underground garage

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[Procedure amendment]

[Submission date] July 2, 2002 (2002.7.2)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a side view showing an outline of a completed construction state of a metal (steel) underground garage as an example of a unit-type metal underground structure according to the present invention.

FIG. 2 is a plan view of the same unit type underground garage.

3 is a vertical cross-sectional view taken along line XX of FIG.

FIG. 4 is an enlarged vertical cross-sectional view of a main part showing a configuration of a wall, a ceiling, and a floor structure in the split unit.

FIG. 5 is an enlarged vertical sectional front view of a main part showing a joint structure of two upper and lower split units.

FIG. 6 is a schematic front view illustrating an overlapping state of two upper and lower split units during transportation.

FIG. 7 is an enlarged vertical cross-sectional view of a main part showing a configuration of a wall and a ceiling structure in a split unit when a basement as another example of the unit-type metallic underground structure according to the present invention is targeted.

FIG. 8 is an enlarged vertical sectional view of a main part of a unit-type metallic underground structure proposed by the present inventor.

[Explanation of symbols] 1 box type unit 1U upper split unit 1D lower split unit 2Wu, 2Wd wall structure 2C ceiling structure 2F floor structure 3 core material steel frame 4 metal outer plates 5 Wooden interior boards 7 heat insulation layer 8u, 8d metal plate member 9 Waterproof sealing material 12 cast concrete UG underground garage

Claims (6)

[Claims] 1. A box type structure in which a wall structure, a ceiling structure and a floor structure each having a metal outer plate fixed to the outside of a plurality of core steel frames are assembled to form a □ type rigid frame structure in the short side direction. By dividing the unit along the horizontal plane at the middle part of the wall structure, it is divided into two units with a U-shaped ramen structure on the upper and lower sides for factory production, and a box with the upper and lower divided units as one set. A plurality of mold units are carried into the construction site with the upper and lower split units being disassembled, and the lower split unit sides having the floor structure are lined up in a row with the upward open state to provide a flat concrete surface. Installed on top of each other, the upper split unit side having the ceiling structure is stacked downward on the lower split unit by arranging them in a row with the upper split unit side facing downward, By fixing and joining the split units to each other in a state where the ends of the wall structures in both split units are butted against each other, a plurality of box-shaped units are assembled into a □ -shaped rigid frame structure in the short side direction and an earthquake-resistant wall structure in the long side direction. At the same time, adjacent box-type units are joined to each other to construct an underground structure with a predetermined depth, and at the bottom of each lower split unit of the plurality of box-type units that make up this underground structure. A unit-type metal underground structure, wherein concrete for preventing movement of an underground structure is placed in a thickness such that the floor structure of each of the divided units is buried. 2. The upper and lower split units of each box-type unit are divided along the horizontal plane at an intermediate portion corresponding to one half of the height of the wall structure in the box-type unit. The unit type metal underground structure according to 1. 3. A watertight sealing material is sandwiched between the upper and lower two split units of each box-type unit between metal plate members fixed to the end portions of the core steel frame constituting the wall structure of both split units. The unit type metallic underground structure according to claim 1 or 2, which is fixedly joined by tightening both plate members together with a bolt in a state. 4. The metal outer plates of the wall structure, the ceiling structure, and the floor structure in the upper and lower divided units of each box-type unit are formed by bending a single metal plate into a U-shape. A series of integrally formed parts.
A unit-type metal underground structure according to any one of 1 to 3. 5. The unit type metallic underground structure according to claim 1, wherein the target underground structure is an underground garage which is wholly or partially embedded in the ground. 6. The target underground structure is a basement that is wholly or partially embedded in the ground, and has a metal outer plate and a core that form a wall structure and a ceiling structure in each box-type unit. A heat insulating layer is formed in each space between the inner plate and the inner plate of the steel frame.
A unit-type underground structure made of metal according to any one of 4 to 4.