JP3017911B2 - Steel plate concrete structure building and its construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel plate concrete structure used for a nuclear power plant, for example, and a method of constructing the same.

[0002]

2. Description of the Related Art For example, a building of a nuclear power plant mainly has a reinforced concrete structure (RC structure). A general construction method is to assemble a reinforcing bar for each member such as a floor, a wall, and a ceiling. After that, perform the formwork to put concrete, and then put the concrete,
The mold is removed until the concrete hardens, for example, after curing for about one month. Then, afterwards, the supporting members such as pipes, cable trays, air conditioning ducts, and the like housed in the building are welded to the embedded metal members set in the reinforced concrete structure before the concrete is cast. It is supported by the installation.

FIG. 13 shows an example of an installation state of these equipment members.

[0004] In the building, in addition to machinery such as pumps and heat exchangers, pipes 1 for communicating between them, a cable tray 2 for installing these power or instrumentation cables, a building, Equipment members such as an air conditioning duct 3 for performing indoor ventilation and air conditioning are arranged. In particular, the pipe 1, the cable tray 2, and the air conditioning duct 3 are installed so as to extend over substantially the entire area of the building.

[0005] In order to support these equipment members 1, 2, 3, an embedded metal member 5 with a stud dowel is embedded in a concrete frame 4, and an end of each support member 6 is mounted on an exposed surface of the embedded metal member 5. The parts are fixed by welding or the like.
Equipment members such as the pipe 1, the cable tray 2, and the air conditioning duct 3 are fixedly supported by bolts, nuts, welding, or the like.

Here, in the reinforced concrete structure,
After the concrete is cast, no mechanical work can be performed in the building until the concrete hardens.

In consideration of this point, it has been proposed that the building has a steel plate concrete structure as shown in FIGS.

In this structure, for example, a wall of a building has a reinforcing rib plate 8 sandwiched between two rectangular steel plates 7, 7 which are arranged at a predetermined interval, and a stud dowel 9 if necessary. To form a rectangular block-shaped wall steel plate block 10, the steel plate blocks 10 are arranged side by side, and the butting portions 11 are joined by welding to form a frame 12. It is constituted by pouring concrete into each space 10a of the block 10 and hardening it.

Here, each of the steel plate blocks for walls 10 comprises:
For example, as shown in FIG.
4 and is transported to a predetermined position.
4 is fixed to the floor 15 via an anchor nut 16 embedded in the floor 15.

On the other hand, the floor 15 and the ceiling are
A floor and ceiling steel plate block 10 ′ (see FIG. 16), which is reinforced with a channel steel 18 on both sides and is formed in a block shape, is arranged side by side to join the respective butted portions to form a framework.
It is configured by placing concrete 4 with reinforcing bars 19 assembled above this framework.

Then, various equipment members 1 to 3 are provided in the building.
As shown in FIG. 17, an embedded metal member 5 is previously welded to a predetermined position on the back surface side (concrete side) of the steel plate 7, and after the concrete is cast, as shown in FIG. A hole 7a is provided at a position corresponding to the embedded metal member 5 to expose the surface of the embedded metal member 5 to the outside, and the end surface of the support member 6 is welded to the exposed portion surface to fix it.

In the case of this steel plate concrete structure, the construction period can be shortened as compared with a reinforced concrete structure in which after concrete is cast, the concrete is hardened and the mechanical construction in the building is started.

[0013]

However, as described above, even if, for example, a steel plate concrete structure is adopted as the building structure of a nuclear power plant, it is difficult to adjust the arrangement of the buried parts of the embedded hardware. Not only does it take a lot of time, but also a large number of notches in the steel plate cause defects in the structural members of the building, and it is necessary to check the strength of each notch.

Further, when installing equipment such as pipes, air conditioning ducts, and cable trays housed in the building, it is necessary to separately perform installation work after the building is constructed. Is required to be further streamlined.

The present invention has been made in view of the above circumstances, and uses the exposed surface of a steel plate effectively to greatly reduce the number of embedded hardware at the time of placing concrete. It is an object of the present invention to provide a device capable of more effective use of a wall or a wall itself, and a device for saving labor and shortening a construction period of installation work of equipment members housed in a building.

[0016]

In order to achieve the above-mentioned object, a steel plate concrete structure building according to the present invention forms a frame by continuously arranging steel plate blocks formed in a rectangular block shape, and forms concrete on the frame. In a steel plate concrete structure building constructed by casting, a steel plate surface of the steel plate block is provided with a support function of a support member for supporting a device member housed in the building, and between the steel plate blocks. And at least one of the spaces defined by the rib plates having the structural strength disposed in the space is left as a space without placing concrete.

[0017] A method of constructing a steel plate concrete structure building is a method of constructing a steel plate concrete structure building in which a steel plate block formed into a rectangular block shape is continuously arranged to form a frame, and concrete is poured into the frame. The method is characterized in that the equipment members housed in the building are previously integrated with the steel plate block before the formation of the framework.

[0018]

According to the above-mentioned building, the supporting member for supporting the equipment member is directly welded to the surface of the steel plate without separately providing an embedded metal part. It can be fixed, thereby enabling a significant reduction in the number of embedded hardware.

[0019]

Further, according to the building of the third aspect , by providing a portion left as a space without placing concrete between the steel plate blocks, this space can be used as an air conditioning duct or a piping space. This eliminates the need for separately providing an air conditioning duct and a piping space, and allows more effective use of the wall itself.

Further, according to the construction method of the fourth or fifth aspect , the steel plate blocks in which the equipment members housed in the building are integrated in advance are arranged side by side, and welding or the like is performed as necessary. Accordingly, the equipment members can be installed in the building simultaneously with the construction of the building.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show supporting members 6 (6a to 6c) for supporting equipment members such as the cable tray 2 and the air conditioning duct 3 on the exposed surface of the steel plate 7 on the side opposite to the concrete frame 4.
1 shows an embodiment having the support mechanism of FIG.

That is, in the embodiment shown in FIG. 1, an additional stat dove 9a is provided at a predetermined position between the stat dowels 9, 9 arranged at a constant pitch, and a thick steel plate 20 is used in part. The thick steel plate 20 is reinforced with the long foot stud dowel 9b to support the support member 6a with a small load, and to support the support member 6b with a larger load while keeping the surface of the steel plate 7 as it is. Uses the surface of the portion to which the additional stud dowel 9a is added and the surface of the thick steel plate 20 for supporting the supporting member 6c with a large load, and uses the supporting member 6a, 6b, 6c for the supporting member 6c. The ends are welded and supported.

As described above, all the support members 6 can be supported by selectively using portions having different strengths according to the magnitude of the load supported by the support members 6 (6a to 6c). Moreover, the number of embedded hardware can be minimized.

Here, as an example of mounting the thick steel plate 20, as shown in FIG. 2 (a), a notch 7a having an inner shape substantially the same size as the outer shape of the thick steel plate 20 is formed. 7
In addition to the butting type in which the outer peripheral surface of the steel plate 20 is butted against the inner peripheral surface of the notch 7a to weld the butted portion, as shown in FIG. The notch type in which an inner notch 7b slightly smaller than the outer shape of the steel plate 7 is provided, and the thick steel plate 20 is welded to the back side of the steel plate 7, and the stud dowel 9b is formed in the steel plate 7 as shown in FIG. There is a drilling type in which a hole 7c through which a steel plate 20 is inserted is formed, a stud dowel 9b is inserted into the hole 7c, and a thick steel plate 20 is welded from the surface side.

The embodiment shown in FIG. 3 uses an angle material 21 and a channel material 22 in addition to the stud dowel 9 as a reinforcing material for the steel plate 7, and the embodiment shown in FIG. And the thick steel plate 20
The bridging material 23 is hung between the thick steel plates 20, 20, and the bridging material 23 is used to support the supporting member 6, so that the supporting member 6 can be supported at an arbitrary supporting point. .

In the case of the embodiment shown in FIGS. 3 and 4, standardization can be achieved by eliminating the necessity of properly using the embodiment shown in FIG. 1, thereby reducing the number of man-hours in designing and manufacturing. Reduction can be achieved.

It is needless to say that the above embodiments can be appropriately combined.

FIGS. 5 to 8 show an embodiment in which the exposed portion of the surface of the steel plate 7 is used as a part of the equipment member. In the embodiment shown in FIG. 5, the exposed portion of the steel plate 7 constituting the wall portion is exposed. The upper plate 24 and one side surface of the bottom plate 25 are welded in parallel to each other with a predetermined space therebetween, and the side plate 26 is welded to the other side surface of the upper plate 24 and the bottom plate 25 to form a closed space 27. This space 27 is used as the air conditioning duct 3,
One end of a connecting plate 28 linearly continuous at a predetermined pitch is welded to the surface of the steel plate 7 in two rows, and a channel steel 29 is welded to the other end of the connecting plate 28 to extend in two rows.
It is what constituted.

That is, the space 27 formed by the steel plate 7, the upper plate 24, the bottom plate 25 and the side plates 26 has a closed structure and can be used as the air conditioning duct 3, and the air conditioning duct 3 constitutes a building. The steel plate 7, the connecting plate 28 and the channel 2
The cable tray 2 constituted by 9 is also fixed to the building in an integral structure with the steel plate 7.

In this embodiment, since the air-conditioning duct 3 and the cable tray 2 are integrally formed with the building, there is no need for a support member for fixing the air-conditioning duct and the cable tray and an embedded metal member for fixing the support member. In addition, the construction space such as a support member between the wall surface and the air conditioning duct 3 and the cable tray 2 is eliminated, so that the effective space in the building can be increased.

In this embodiment, in consideration of the load on the air duct 3 and the cable tray 2, an additional stat dowel 9a is provided between the stat dowels 9 at the mounting portion to enhance the strength here. Is being planned.

In the embodiment shown in FIG. 6, one side portion of the bottom plate 25 and the side plate 26 is welded to the corner portion of the wall portion and the ceiling portion, and the other side portions are welded to each other to be hermetically sealed at the corner portion. A space 27 is formed, and one of the air conditioning ducts 3 is formed in the space 27.
A pair of side plates 26 are also vertically suspended on the steel plate 7 forming the ceiling with a predetermined distance therebetween, and the bottom plate 25 is welded to the lower ends of the side plates 26 to form a sealed space 27. And the space 27 is used as another air conditioning duct 3.

In the case of this embodiment, the air-conditioning duct component can be used also as a building structural material.

In the embodiment shown in FIG. 7, a part of the reinforcing H-shaped steel 17 constituting the ceiling is projected downward, and the H-shaped steels 17, 17 are connected to each other by a bottom plate 25 to be hermetically sealed. Space 27 is formed, and this space 27
It is what constituted.

Further, in the embodiment shown in FIG. 8, a part of the reinforcing H-shaped steel 17 constituting the ceiling is projected downward, and the H-shaped steels 17 and 17 are connected by a connecting plate 28 to form a space. The cable tray 2 is formed by this space portion.

FIGS. 9 and 10 show an embodiment in which no space is left between the steel plate blocks 7 and 7 and concrete is left as a space, and this space is used as an air conditioning duct 3. FIG. It is.

That is, FIG. 9 shows that the space 30 is left as it is without casting the concrete 4 in a portion sandwiched by the reinforcing rib plates 8, 8 between the steel plate blocks 7, 7 forming the ceiling. FIG. 10 shows this space 30 as the air-conditioning duct 3. In FIG. 10, the concrete 4 is placed in a portion sandwiched by a part of the reinforcing rib plates 8, 8 between the steel plate blocks 7, 7 forming a wall standing on the floor 15. Space 30 'without casting
Is left as it is, and this space 30 ′ is used as the air conditioning duct 3.

The size of the spaces 30, 30 'can be changed by adjusting the thickness of the reinforcing rib plate 8, and the spaces 30, 30' can be used for other purposes, for example, It can also be used as a space for piping.

As described above, a part of the space between the steel plate blocks 7, 7 is left without leaving the space 30, 30 'without casting concrete, and the space 30, 30' is provided with the air-conditioning duct 3 or the piping. By using it as a space for
It is not necessary to separately provide the air-conditioning duct 3 and a space for piping, and more effective use of the wall itself can be achieved.

FIGS. 11 and 12 show an embodiment of the construction method. In this embodiment, as shown in FIG. 11, a wall is provided between two rectangular steel plates 7 for reinforcement. The support member 6 of the pipe 1 and the support member 6 of the cable tray 2 are fixed in advance to the front side of the wall steel plate block 10 with the rib plate 8 sandwiched therebetween by welding or bolts. 1 and the cable tray 2 are individually held to form an integrated block, which is hoisted by a hoisting machine 14 by a hoisting device 13, transported to a predetermined position, and arranged side by side, and the butted portions are welded to form a frame. After doing
It is built by pouring concrete into this framework.

On the other hand, as shown in FIG. 12, the ceiling portion is previously provided on the lower surface of the steel plate block 10 'for ceiling formed by combining the steel plate 7 and the H-shaped steel 17 and arranging the channel steel 18 on the side. The support member 6 of the pipe 1 is fixed, and the pipe 1 is held by the support member 6 to form an integrated block, which is hoisted by the hoisting machine 14 by the hoist 13, transported to a predetermined position, and arranged. Each butt portion is welded, and if necessary, a reinforcing bar is disposed above the butt portion to form a frame, and concrete is poured into the frame to construct the frame.

As described above, the equipment such as the pipe 1 is previously integrated with the steel plate blocks 10 and 10 ', and the butting portions are fixed by welding or the like while sequentially arranging them, thereby constructing a building. By going, the equipment members can be installed on the wall and ceiling simultaneously with the construction of the building, and then the small-scale construction of the abutting part between each block is performed to install the equipment members inside the building Construction can be completed.

Thus, the equipment members can be unitized and installed at the same time when the building is constructed. Therefore, it is not necessary to install the equipment members at a high place such as the ceiling in the building after the construction of the building. Can be greatly reduced, labor can be saved significantly, and safety can be ensured.

In the above embodiment, the steel plate block 1 for a wall is used.
0 shows an example in which the piping 1 and the cable tray 2 as one of the equipment members are previously integrated with the ceiling steel plate block 10 ′, respectively, but the other equipment members are integrated. Needless to say, the number of device members to be integrated in advance can be increased.

[0047]

Since the present invention has the above configuration,
According to the building of claim 1, the support member for supporting the device member can be fixed by directly welding the end face to the steel plate surface without separately providing an embedded metal component,
As a result, the number of embedded hardware can be significantly reduced, and by standardization, the number of man-hours for designing and arranging embedded hardware can be significantly reduced.

According to the building of the second aspect, the exposed portion of the steel plate is used as a part of equipment members such as an air-conditioning duct and a cable tray, so that the part is constituted by the exposed portion of the steel plate. Eliminating the need for a support member for supporting the member and an embedded metal member for fixing and supporting the end of the support member, and eliminating defects due to notches in the steel sheet,
Furthermore, more effective use of the space inside the building can be achieved.

Further, according to the building of the third aspect, by providing a portion left as a space without placing concrete between the steel plate blocks, and using this space as an air conditioning duct or piping space, This eliminates the need to separately provide an air conditioning duct and a piping space, and enables more effective use of the wall itself.

Further, according to the method of the fourth aspect, the steel plate blocks in which the equipment members housed in the building are integrated beforehand are arranged side by side, and welding or the like is performed as necessary, so that the building can be constructed. At the same time as the construction, the equipment members can be installed in the building, thereby greatly shortening the construction period, saving labor, and greatly improving safety by reducing work at high places.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention in which a steel plate has a support function of a support member.

2 (a) to 2 (c) are cross-sectional views showing different examples of a mounting portion of a thick steel plate in FIG. 1;

FIG. 3 is a cross-sectional view showing another embodiment.

FIG. 4 is a sectional view showing still another embodiment.

FIG. 5 is a perspective view showing one embodiment in which an exposed portion of a steel plate is part of a device member.

FIG. 6 is a perspective view showing another embodiment.

FIG. 7 is a perspective view showing still another embodiment.

FIG. 8 is a perspective view showing still another embodiment.

FIG. 9 is a perspective view showing an embodiment in which a space is left between steel plate blocks.

FIG. 10 is a perspective view showing another embodiment.

FIG. 11 is a perspective view for explaining the construction of a wall in the method of the present invention.

FIG. 12 is a perspective view for explaining the construction of the ceiling.

FIG. 13 is a perspective view showing a state after building construction, showing a conventional example.

FIG. 14 is a perspective view showing a state after the frame of the wall portion.

FIG. 15 is a perspective view for explaining the construction of the wall.

FIG. 16 is a perspective view showing a steel plate block for floor and ceiling.

FIG. 17 is a cross-sectional view showing a state before the embedded hardware is exposed.

FIG. 18 is a cross-sectional view showing a state after the embedded hardware is exposed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Piping (equipment member) 2 Cable tray (equipment member) 3 Air-conditioning duct (equipment member) 4 Embedded hardware 6, 6a, 6b, 6c Support member 7 Steel plate 8 Rib plate 9, 9a, 9b Stud dowel 10, 10 'Steel plate Block 12 Frame 20 Thick steel plate 23 Bridge material 24 Top plate 25 Bottom plate 26 Side plate 27 Space 28 Connecting plate 30, 30 'Space

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁷ Identification code FIG21C 13/00 N (72) Inventor Hideaki Saito 1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Company (72 Inventor Akira Imamura 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Co., Inc. (72) Inventor Masayuki Takeuchi 1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Co., Inc. (72) Inventor Keiichi Watanuki 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Toshiba Yokohama Works (72) Inventor Takayasu Asai 66-2 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Inside Toshiba Engineering Corporation (72) Inventor Kazushige Suga 66 Horikawa-cho, Sachi-ku, Kawasaki-shi, Kanagawa 2 Toshiba Engineering Corporation (72) Inventor Kenji Aoki 66-2 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Toshiba Engineering Corporation (72) Inventor Saburo Kaneko 1-3-3 Moto-Akasaka, Minato-ku, Tokyo No. 8 Kashima Construction Co., Ltd. Tokyo Branch (72) Inventor Ippei Matsuo 2-7-7 Motomoto Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Kiyoshi Hara 1-chome Moto-Akasaka, Minato-ku, Tokyo No. 2, No. 7, Kashima Construction Co., Ltd. (56) References JP-A-4-293864 (JP, A) JP-A-57-86785 (JP, A) JP-A-58-110754 (JP, A) 3-2777993 (JP, A) Full opening 1986-201402 (JP, U) Full opening 1986-78915 (JP, U) Full opening 1987-131507 (JP, U)

Claims (5)

(57) [Claims] 1. A steel plate concrete structure building constructed by successively arranging steel plate blocks formed in a rectangular block shape to form a frame and pouring concrete into the frame, in a steel plate building of the steel plate block. A steel plate concrete structure building, wherein a reinforcing member is densely provided in the vicinity of a portion to be bonded to a support member for supporting equipment members to be stored. 2. A form a framework of steel blocks formed in a rectangular block shape arranged pulling continuously the concrete steel concrete structure building built with Da設to this framework, the building in of steel of the steel block To store
Close the area near the part that adheres to the support member that supports the equipment members.
A steel plate concrete structure building characterized by the installation of reinforced steel plates or mold steel. 3. A steel plate concrete structure building constructed by forming a frame by continuously arranging steel plate blocks formed in a rectangular block shape and placing concrete in the frame, and arranging between the steel plate blocks. 3. The space defined by the rib plate having the provided structural strength and at least one of the spaces is left as a space without casting concrete. 4. Steel plate concrete building. 4. A method for constructing a steel plate concrete structure building in which a steel plate block formed into a rectangular block shape is continuously arranged to form a frame, and concrete is poured into the frame. A step of previously integrating a device member with the steel plate block before the formation of the framework via a support member, and a step of densely providing a reinforcing member in the vicinity of a portion where the steel plate of the steel plate block is bonded to the support member. The construction method of the steel plate concrete structure building characterized by having. 5. A method for constructing a steel plate concrete structure building in which a steel block formed in the shape of a rectangular block is continuously drawn to form a frame, and concrete is poured into the frame, is housed in a building. a step of advance integrated so the steel block before the framework forming the instrument member via the supporting member, the steel of the steel sheet blocks
Contact with support members that support equipment members stored in the building
A step of densely installing a reinforcing steel plate or a mold steel in the vicinity of a part to be attached.