JPH0886037A - Plant building, construction method of the building, and structure used for the construction - Google Patents

Abstract

(57) [Summary] [Structure] During the wall construction in the heat exchanger area of the nuclear power plant, in parallel with the working scaffold at the time of construction and the intermediate floor member 1 for maintenance after construction, the pipe 11, the duct 12, and the cable. A module in which various product groups set in the area such as the tray 13, the valve 14, and the support 15 are integrated is completed outside the installation site, and the module is hung in the area by using a lifting machine and the wall 81 It is set on the cradle 3 which is set so as to project from above. [Effects] (1) Construction, parallel construction of machinery and process shortening by modularization, (2) Labor saving of on-site work, (3) Elimination of 3K on site, (4) Use of intermediate floor members as scaffolding during construction By doing so, the effect of reducing the scaffolding can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a building of a plant, a structure used for the construction, and a building structure thereof.

[0002]

2. Description of the Related Art A method for constructing a building of a plant is disclosed in JP-A-57-
As disclosed in Japanese Laid-Open Patent No. 57289 and Japanese Patent Laid-Open No. 61-270437, after the floor and side walls of a partitioned room of the plant building are formed, the ceiling constituent members of the room are preliminarily provided with pipes or pipes passing through the room. A plant component such as a duct is integrally attached, and the integrated component is hung and attached near the upper end of the side wall.

In Japanese Patent Laid-Open No. 57-57289, the mounting can be performed by projecting a pedestal from the side wall into the room and lowering the ceiling component to the pedestal. It is disclosed that a ceiling deck plate is included.

Japanese Patent Laid-Open No. 61-270437 discloses that when a large plant component device to be installed on the floor of a room is required,
The large equipment is hung before the ceiling components are hung.

After the ceiling constituent members are supported on the side walls, concrete construction work for the ceiling is performed.

[0006]

In the construction method according to the above-mentioned prior art, since the plant equipment is arranged on the ceiling of the partitioned room, the connection between the plant construction equipment on the ceiling side and the plant construction equipment on the floor is connected. Also, the scaffolding is set up from the floor to near the ceiling for the installation work of the plant components that will be brought in later, and the scaffolding is used to carry out work in high places.

The work for finishing the side wall of the room also involves working at a high place.

Even when the plant equipment has been installed, when inspecting or maintaining the plant equipment installed at a high place, the scaffold is raised from the floor to near the ceiling, and the scaffold is used to raise the height. Work is required.

Since it takes time to assemble this scaffold and unnecessary scaffolds are removed after using the scaffolds, it takes time to remove them.

For this reason, there is a problem in that work at a high place is dangerous and the construction process is likely to be prolonged.

Therefore, an object of the present invention is to achieve a safe and short-term construction of a plant.

[0012]

The first means for achieving the above object is that in which the plant constituent equipment is arranged in the vertical direction midway of the partitioned area in the plant building, the floor of said partition is And a ceiling, an intermediate floor is provided midway in the up-down direction, and the second means is a midway in the up-down direction of a partitioned area of the plant building with the plant constituent equipment. In the plant building characterized in that the intermediate floor is equipped in the vertical direction between the floor and the ceiling of the section, and the intermediate floor is equipped with the plant constituent equipment. The third means is a structure according to the second means, wherein the plant-constituting equipment is connected to equipment installed on a floor lower than an intermediate floor and / or attached to the piping. Secret And a valve for controlling the plant building structure, wherein the fourth means is a partitioned area of the plant constituent equipment arranged in the vertical direction of the partitioned area in the plant building. Is an intermediate floor structure integrally provided on an intermediate floor member installed at a height midway between the ceiling and the floor of the plant, and the fifth means is in the vertical direction midway of the partitioned area in the plant building. A plant constituent device to be deployed and a ceiling constituent member of the section are integrally equipped with an intermediate floor member installed at a height midway between the ceiling and the floor of the sectioned area, and the ceiling constituent member and The intermediate floor member is an intermediate floor structure that is connected via a suspending member, and the sixth means is a pillar that supports the ceiling constituent member in the fifth means, and the sixth constituent means is the ceiling constituent member. Is the ceiling beam member and the ceiling beam member A seventh aspect of the present invention is an intermediate floor structure characterized by being a placed deck plate, wherein the seventh means attaches the component equipment of the plant installed in one section of the plant building integrally with the intermediate floor member, A method for constructing a plant, comprising a floor member at a height midway in the one section, wherein the eighth means is a floor of the section of the component equipment of the plant installed in the one section of the plant building. Large equipment to be installed is put in first, and later, the other component equipment to be installed at an intermediate height between the ceiling and the floor of the compartment is integrally mounted with the intermediate floor member, and the intermediate floor member is rearwardly installed in the compartment. A method for constructing a plant, wherein the intermediate floor member is installed at an intermediate height between the ceiling and the floor of the compartment, and the ninth means is the seventh means or the eighth means. Suspending the ceiling component and the intermediate floor member After being connected via a retaining member, the ceiling constituent member and the intermediate floor member are simultaneously hung down toward the section when the ceiling is open, and the ceiling constituent member and the An intermediate floor member is installed to equip the intermediate floor member at an intermediate height between the ceiling and the floor of the section, which is a method for constructing a plant, and a tenth means is a ninth means. In the method for constructing a plant, the hanging member is a pillar that supports the structural member of the ceiling, and the structural member of the ceiling is a ceiling beam member and a deck plate installed on the ceiling beam member. , First
1 means, in any one of the 7th means to 10th means, a pedestal is provided so as to protrude into the compartment at an intermediate height of a side wall forming the compartment, and the intermediate floor member is provided on the cradle. A method for constructing a plant, comprising supporting and equipping an intermediate floor in the compartment, wherein the twelfth means is equipped in the compartment by any one of the seventh means to the eleventh means. A worker passes through the intermediate floor member, and the construction work for the components of the plant or the components of the plant that are brought into the compartment after the wall or the intermediate floor of the compartment is installed or the components of the plant in the compartment are inspected. It is a method of constructing a plant characterized by carrying out,
A thirteenth means performs, in parallel, a work of integrally mounting a component device of a plant equipped in one section of a plant building with an intermediate floor member and a work of constructing a side wall and a floor of the section. Of the plant, wherein the intermediate floor is hung from above in the compartment to a height in the compartment during the period when the ceiling of the compartment is open, and the middle floor member is installed at the middle height in the compartment. Is the way.

[0013]

According to the first means, since there is an intermediate floor between the floor and the ceiling, various construction and inspection work can be safely performed on the intermediate floor, and the work of assembling and removing the scaffold from the floor is reduced. As a result, the effect of shortening the process is obtained.

According to the second means, by installing and inspecting the plant component equipment installed in the vertical direction of the partitioned area in the plant building with the intermediate floor as the work base, the height from the floor can be increased. It is possible to obtain the effect that the work for the place and the work for assembling and removing the scaffold from the floor are reduced, and safe work and process shortening are achieved.

The third means, in addition to the action of the second means, specifically, the piping and / or valves of the plant components are approached from the intermediate floor without assembling a high scaffold from the floor to be used, and directly. In addition to being able to inspect, when equipped with a valve, there is an effect that the valve can be operated safely and easily by using the intermediate floor as an operation platform when operating the valve.

According to the fourth means, the plant constituent equipment is carried into the partitioned area of the plant building at the same time as the intermediate floor member to shorten the process, and the intermediate floor member constitutes the intermediate floor after the installation. , Various constructions using the intermediate floor,
The inspection work can be performed safely, and the work of assembling and removing the scaffold from the floor can be reduced, which leads to the effect of shortening the process.

According to the fifth means, the plant constituent equipment, the ceiling constituent member, and the intermediate floor member can be simultaneously hung in the partitioned area in the plant building. In addition to shortening the time, the intermediate floor member is used as the middle floor, various construction inspection work can be done safely on that middle floor, and the work of assembling and removing the scaffold from the floor is reduced, further shortening the process Is obtained.

According to the sixth means, in addition to the function of the fifth means, the ceiling deck plate can also be quickly hung in the compartments, so that the effect of further shortening the process can be obtained.

According to the seventh means, there is an effect that the plant component equipment can be attached to the intermediate floor member in a compartment within the plant building and carried in all at once, and the steps can be shortened. It can be used as an intermediate floor in the compartment, and various construction and inspection work can be performed safely on that floor, and the work of assembling and removing the scaffold from the floor can be reduced, further shortening the process can be achieved. To be

According to the eighth means, the component equipment of the plant installed in the compartment in the plant building is put in first for the equipment placed on the floor, and the other equipment is put in later so as not to interfere with each other. The plant can be quickly constructed while adopting a smooth carry-in method, and at the same time, the effect that the plant constituent equipment can be attached to the intermediate floor member in a compartment within the plant building and carried in collectively can be obtained, and the process can be shortened. In addition, the transported intermediate floor member is used as the intermediate floor in the section, and various construction and inspection work can be safely performed on the intermediate floor, and the work of assembling and removing the scaffold from the floor is reduced, It is possible to obtain the effect of further shortening the process.

According to the ninth means, in addition to the action of the seventh means or the eighth means, the ceiling constituent member can be installed in the section early, so that the steps can be further shortened and the ceiling constituent member can be used as an intermediate floor. Since the members and the plant constituent equipment attached thereto act as a suspension balance, the work of arranging and removing the suspension balance can be omitted, and the process can be further shortened.

According to the tenth means, in addition to the function of the ninth means, the number of early installation points of the ceiling constituting member is increased and the process is further shortened.

According to the eleventh means, the seventh means to the tenth means
In addition to the operation by any one of the means, it is possible to obtain the effect that the intermediate floor member is mounted on the pedestal protruding from the side wall and stabilized, and the intermediate floor member is easily installed in the compartment.

According to the twelfth means, the seventh means to the eleventh means
In addition to the operation by any one of the means, the construction work of the intermediate floor member or the equipment of the plant that is carried into the compartment after the intermediate floor member is installed on the wall of the compartment or the intermediate floor is installed, or the constituent equipment of the plant in the compartment. It is possible to obtain an effect that it can be used safely as a work place for inspections and can be quickly moved along the intermediate floor member to perform the inspections and works.

According to the thirteenth means, the building construction work and the work of integrally mounting the plant component equipment with the intermediate floor member are translated, and the plant component equipment is attached to the intermediate floor member within the compartment in the plant building. The effect that it can be carried in all at once, the function that the carried-in intermediate floor member can be used as the middle floor in the section to perform various construction inspection work safely, and the work to assemble and remove the scaffold from the floor is reduced Thus, it is possible to obtain the effect of further shortening the process.

[0026]

[Examples] Specific examples of constructing a heat exchanger area in a nuclear power plant plant building will be described below.

The construction process is assembled by the process of the intermediate floor module construction method shown in FIG.

First, the floor 82 for partitioning the heat exchanger area and the walls 81 on both sides are constructed.

During this construction, the pedestal 3 is also installed at a mid-height portion of both walls 81, but it may be installed at a later date.

After this construction, the heat exchanger 83 is first put into the heat exchanger area by hanging and is carried onto the floor 82.

In parallel with these works, an intermediate floor module is created as an intermediate floor structure.

The creation may be carried out at a factory with a good working environment and carried to the site, or it may be created on the ground at the site.

In the production of the intermediate floor module, in addition to the cable tray 13, the pipe 11 is fixedly attached to the intermediate floor member 1 by the support 15, and the valve 14 is installed and placed on the pipe 11.

These cable tray 13, pipe 11,
The valve 14 is arranged in the same arrangement relationship as the equipment arrangement in the heat exchanger area.

A suspension piece 2 on which a wire 92 is hooked is attached to the intermediate floor member 1.

Large lifter 9 standing on the ground outside the building
The wire 0 is hung between the hanging piece 2 and the hanging hook 91 of the large-sized lifting machine 90, so that the side wall 81
During this period, the intermediate floor module is hung down and the intermediate floor module is loaded and loaded.

The suspended intermediate floor module is mounted on the pedestal 3 after the centering work. As will be described later, the intermediate floor module and the pedestal 3 are fixed, and the intermediate floor module is attached to the wall 81 and heated. It exists as an intermediate floor in the exchange area.

After that, the ceiling of the heat exchanger area is constructed.

After the intermediate floor module and the pedestal 3 are fixed, the work of connecting the heat exchanger 83 and the pipe 11, the installation of the valves and the instrumentation equipment around the pipe which are carried in after the installation of the intermediate floor module, Also, interior finishing such as finishing of the wall 81 and inspection and inspection work are performed.

Each of these operations is carried out by an operator riding above the intermediate floor member of the intermediate floor module.

Therefore, a staircase between the floor 82 and the intermediate floor member is provided.

This intermediate floor member is used as a floor for inspection and other work even after the plant is completed.

More specifically, it is as follows.

FIG. 1 conceptually shows a situation in which an intermediate floor module CASE-1 which is an intermediate floor structure is suspended in a heat exchanger area of a nuclear power plant using a large lifting machine.

In a nuclear power plant, large products such as heat exchangers are generally arranged on the lower floor.

After the completion, since the vicinity thereof becomes the passage space and the maintenance area, the amount of installations such as the pipes 11 and the ducts 12 is not so large around the large equipment arranged on the lower floor. , That much middle floor member 1
Many product groups, such as the pipe 11, the duct 12, and the cable tray 13, are arranged at a position higher than the level at which is set.

In addition to the above, in the intermediate floor module, it is possible to further install a work floor surface and an operation floor surface on the intermediate floor member 1.

By incorporating a lifting device such as a chain block, a monorail, and a crane under the intermediate floor and on the side surface, it can be expected to contribute to the product carrying-in and installation workability of the floor and the lower floor.

The intermediate floor applied to the intermediate floor module may allow the product to be set in place.

It is also possible for an operator to work on it and to have a shielding function by incorporating a shielding member against radiation.

The intermediate floor in the intermediate floor module not only covers the entire surface of the room or area constituting the building, but also a part of the room depending on the shape of the building skeleton and the collective state of the product arrangement in the area. Including cases to be converted.

In the intermediate floor module construction method, during the construction of the wall in the area, the intermediate floor member 1 and the pipe 11, the duct 12 for the work scaffolding at the time of construction and the maintenance after the construction are formed in a parallel process. A module that integrates various product groups set in the area, such as the cable tray 13, the valve 14, the support 15, and instrumentation, is completed.

The module is assembled by transporting each product contained in the module to the site while being assembled into an integrated module at the factory, or bringing the product into a processing yard or a processing site near the site in the state of the product. Either assemble the module or do it either way. In any case, the positional relationship among the products is set in the intermediate floor module in the same positional relationship as when the installation in the building was completed.

When suspending the intermediate floor module CASE-1, the wire 92 is stretched over the suspending piece 2 set on the intermediate floor member 1 and is suspended from the upper portion using a large lifting machine.

The intermediate floor module is mounted on the wall 81 of the heat exchanger chamber.
It is set on the pedestal 3 which is set so as to project from above.

The method for receiving the intermediate floor module and the structure of the pedestal are set so as to project from the wall 81 of the heat exchanger chamber, and the main unit is installed on the floor 82 of the heat exchanger chamber. A method of receiving with a support member is considered.

Next, the center floor module is centered and
Set the mid-floor module to the exact location inside the building.

In the intermediate floor module CASE-1, since the ceiling portion is open even after the intermediate floor module is loaded into the building, the product can be loaded onto the intermediate floor member 1 by using a lifting machine. .

The product carried onto the intermediate floor member 1 is mounted at a predetermined position on the intermediate floor member 1 as a plant component device.

When a wide floor surface is required for the mounting work or other work on the intermediate floor member 1, a floor member such as grating is stretched around the intermediate floor member 1.

A floor surface member such as a grating is treated as one member of the intermediate floor member 1 and the intermediate floor member 1 is suspended.
Before the work of hanging, it may be stretched around the floor surface of the intermediate floor member in advance.

By arranging a floor member such as a grating around the intermediate floor member 1, it is safer to operate the valve 14 on the intermediate floor member 1 and to inspect and install the piping 11 and the valve 14. Become.

Particularly, some of the pipes 11 are connected to the heat exchanger 83 installed on the floor 82, and the valve 14 in the middle of the pipe is operated to control the flow rate of the pipe. , The intermediate floor member 1 which is left as a permanent structure supported by the cradle 3 even after the plant is constructed is used as an operation platform for the operation, and the intermediate floor member 1 is also used to enhance the safety of the operation work. It is preferable to stretch the floor surface member around the floor surface.

The same applies to other intermediate floor modules described later.

FIG. 2 illustrates a module (intermediate floor module CASE-2) in which an intermediate floor module and a ceiling beam are integrated via suspension columns 4.

In the case of the intermediate floor module CASE-2,
The ceiling beam member 5 is also used as the suspension balance of the module to suspend it from the upper portion using a large lifting machine, and the module product is placed on the heat exchanger chamber wall 81 or the pedestal 3 set on the floor to perform centering. , Loading and setting to the set point in the heat exchanger area of the nuclear power plant is completed.

For a steel ceiling beam which also serves as a suspension balance,
The hanging piece 2 is provided so that the intermediate floor module can be lifted, and the wire 92 is hung here to be lifted by a large-sized lifting machine.

Also, the intermediate floor member 1 and the steel ceiling beam member 5
Is integrated through the intermediate floor suspension pillar 4 which also serves as a permanent support.

Intermediate floor suspension column 4 which also serves as a permanent support
By holding the product in the module and integrating it into the module, the intermediate floor module CASE-2 can incorporate the product set apart from the floor member into the module as compared with the intermediate floor module CASE-1. Becomes

That is, the various products incorporated in the intermediate floor module have a structure in which the final setting positions of each other are held by the intermediate floor suspension support column 4 which also serves as a permanent steel support.

As described above, the intermediate floor member 1, the steel ceiling beam member 5, and each product group are hoisted by a large-sized lifting machine, carried in and set at once.

Further, the intermediate floor module CAS shown in FIG.
In the case of E-3, the intermediate floor member 1, the ceiling beam member 5 via the suspension columns 4, and the deck plate 6 of the portion corresponding to the upper floor are integrated into a module.

The setting procedure of the intermediate floor module CASE-3 is the same as that of the intermediate floor module CASE-2.

However, since the deck plate integrated and carried in by the intermediate floor module CASE-3 also serves as a concrete formwork, after setting the intermediate floor module, by placing the upper floor concrete 71. The intermediate floor module can be firmly fixed.

In any of the above cases, after the intermediate floor module is set at a predetermined position, the area below the intermediate floor can work independently of the area above the intermediate floor.

At the stage when the area is handed over, when the intermediate floor module is used, the products in the range incorporated in the intermediate floor module have completed the mutual setting, so compared with the conventional method. Man-hours for setting have been greatly reduced.

Further, the remaining work for installing the products such as the pipe 11 and the duct 12 can be carried out by using the intermediate floor of the permanent installation as a scaffold, so that work at high places can be avoided.

FIG. 4 shows an example of the connection between the intermediate floor member 1, the intermediate floor suspension column 4, the ceiling beam member 5, the deck plate 6, and the product to be incorporated.

The suspension column 4 also serving as the intermediate floor member 1 and the support, and the suspension column 4 also serving as the ceiling beam member 5 and the support.
Are welded or bolted together.

Further, the product to be incorporated (the pipe 11 in the example of this figure) is incorporated into the intermediate floor module by being attached to the suspension column 4 which also serves as a support.

FIG. 5 schematically shows the difference in the installation work sequence between the conventional method and the intermediate floor module, using the intermediate floor module CASE-3 as an example.

In the conventional construction method, when the floor and wall construction by the building side is completed, the concrete curing is completed, and the concrete strength is sufficiently secured, the ceiling, that is, the ceiling beam and deck plate which will be the formwork of the upper floor. Before laying the equipment, bring in various products such as equipment, pipes, ducts, etc. and temporarily put them on the floor.

Next, the sequence is such that the ceiling beam for construction work, deck plate, and reinforcing bar work are carried out, and after the concrete placing and concrete curing period, the interior finishing work and the area delivery are carried out, and then the installation work on the equipment side starts. .

In the intermediate floor module construction method, after the concrete curing period after floor and wall construction in the construction process, equipment and piping 1
1, carry in the duct 12 and the like.

Next, in parallel with the building process, the intermediate floor member 1, the suspension columns 4, the ceiling beam member 5, the deck plate 6, and the reinforcing bars are assembled in the intermediate floor module in the building outdoors, and the intermediate floor module is loaded. I do.

After carrying in the intermediate floor module, the centering and setting are performed, the upper floor concrete 71 is cast, the concrete is cured, and the interior finishes and the area is over.

As described above, in the intermediate floor module construction method, the area delivery is advanced compared with the conventional construction method.
Due to the fact that the construction of piping, supports, etc. is almost modularized, piping connection with other rooms and fine adjustment work can be done in parallel during finishing work in the room, and scaffold assembly work can be eliminated. It will be possible to greatly shorten and labor saving on site work.

FIG. 6 shows a structural example of the intermediate floor module receiving portion.

The beam 7 for supporting the intermediate floor member (referred to as the intermediate floor beam member) is made of a steel material such as H steel, and is fixed to the pedestal 3 by bolting.

In consideration of installation and construction tolerances, a hole larger than the diameter of the bolt 8 is formed in the bolted portion of the intermediate floor beam member 7.

As an example of the structure of the intermediate floor module receiving portion, in addition to the case of FIG. 6, a method of welding the pedestal 3 of the intermediate floor beam member can be considered.

FIG. 7 shows a situation in which the intermediate floor module installation area is viewed from above, taking the heat exchanger area as an example.

In the area, the heat exchanger 83 and the pump 8
5, stairs 62 etc. are installed.

It is possible to set some of the pipes 11 for the equipment such as the heat exchanger 83 and the pump 85 before carrying in the intermediate floor module.

In addition, the stairs 62 are the intermediate floor module 20.
In addition to being installed in the area before loading, the intermediate floor module 20 may be installed in advance and set at the same time when the intermediate floor module 20 is loaded.

FIG. 8 shows the arrangement of the intermediate floor beam members 7 supporting the intermediate floor members 1 of the intermediate floor module 20.

The intermediate floor beam member 7 is arranged so that the pedestal 3 receives the intermediate floor module 20.

Also, the pipe penetrating portion and the elevating / lowering opening of the stairs 62 are arranged avoiding them.

FIG. 9 shows a situation in which the intermediate floor module 20 set in the area is viewed from above, taking the intermediate floor module CASE-2 as an example.

In this figure, the intermediate floor beam member 7 hidden under the intermediate floor member 1 is omitted.

FIG. 10 shows a state in which the intermediate floor module 20 is suspended in the nuclear power plant building 30 by using the large-sized lifting machine 90.

Next, a concrete example of the construction of the passage area of the nuclear power plant using the intermediate floor module will be described with reference to the drawings.

The process for constructing the passage area is the same as the process for constructing the heat exchanger area described above, and the heat exchanger is installed in the panel 8
The process is as shown in FIG.
It is the same as the middle floor modular construction method of.

FIG. 11 shows an intermediate floor module CASE-1.
It shows a situation in which a large hoist is suspended in the area of the passage 84 of the nuclear power plant.

In a nuclear power plant, large products such as equipment such as the piping 11 and a panel 83 such as a control panel are generally arranged on the lower floor.

After completion, since the vicinity thereof becomes the passage space and the maintenance area, the amount of installations such as the pipe 11 and the duct 12 is not so large around the lower floor passage, but the intermediate floor member is correspondingly large. Many product groups as plant constituent equipment such as the pipe 11, the duct 12, and the cable tray 13 are arranged at a position higher than the level where 1 is set.

In addition to the above, in the intermediate floor module, it is possible to further install a work floor surface and an operation floor surface on the intermediate floor member 1.

By incorporating a lifting device such as a chain block, a monorail 31, and a crane under the intermediate floor and on the side surface, it can be expected to contribute to the product loading and installation workability of the floor and the lower floor.

The intermediate floor applied to the intermediate floor module can set the product in a predetermined position.

It is possible for an operator to work on it, and also to have a shielding function by incorporating a shielding member against radiation.

The intermediate floor in the intermediate floor module of the present invention not only covers the entire surface of the room or area constituting the building, but also a part of the room depending on the shape of the building skeleton and the collective state of the product arrangement in the area. Including the case of modularization.

In the intermediate floor module construction method, during the wall construction in the area, the intermediate floor member 1 and the pipe 11, the duct 12 for the work scaffolding at the time of construction and the maintenance after the construction are formed in parallel with the steps. A module that integrates various product groups set in the area, such as the cable tray 13, the valve 14, the support 15, and instrumentation, is completed.

As for the module assembly, each product contained in the module is transported to the site in the state of being assembled into an integrated module at the factory, or is brought to the processing yard or the processing site near the site in the state of the product, Either assemble the module or do it either way.

In any case, the positional relationship among the products is set in the intermediate floor module in the same positional relationship as when the installation in the building is completed.

When suspending the intermediate floor module CASE-1, the wire 92 is hung over the suspending piece 2 set in the intermediate floor member 1 and is suspended from above using a large lifting machine.

The intermediate floor module is set on the pedestal 3 which is set to project from the walls 81 on both sides of the passage 84.

Regarding the method for receiving the intermediate floor module and the structure of the pedestal, there are a method of receiving the intermediate floor module and a method of receiving the intermediate floor module with a permanent support member installed on the floor 82 of the passage. Conceivable.

Next, centering the intermediate floor module,
Set the mid-floor module to the exact location inside the building.

In the intermediate floor module CASE-1, even after the intermediate floor module is loaded into the building, the ceiling portion is open, so that the product can be loaded onto the intermediate floor member 1 using a lifting machine. .

After centering the intermediate floor module, it is fixed as shown in FIG. 6 similarly to the construction of the heat exchanger area, and is mounted by being supported by the wall 81 in the middle of the passage area.

FIG. 12 illustrates a module (intermediate floor module CASE-2) in which the intermediate floor module and the ceiling beam member 5 are integrated via the suspension columns 4.

In the case of the intermediate floor module CASE-2,
The ceiling beam member 5 is also used as a suspension balance of the module to suspend the ceiling beam member 5 from above using a large lifting machine, and the intermediate floor module product is placed on the pedestal 3 set on the wall 81 of the passage 84 or the floor 82. By centering, the loading and setting to a predetermined setting location within the nuclear power plant passage area is completed.

The ceiling beam member 5 made of steel, which also serves as a suspension balance, is provided with the suspension piece 2 so that the intermediate floor module can be suspended, and the wire 92 is hung here to be suspended by a large lifting machine.

Further, the intermediate floor member 1 and the ceiling beam member 5 made of steel.
Is integrated through the intermediate floor suspension pillar 4 which also serves as a permanent support.

The intermediate floor module CASE-2 has a structure in which the product is held by the hanging columns 4 of the intermediate floor which also serve as the main support and is integrated with the module, so that the intermediate floor module CASE-2 has a lower floor than the intermediate floor module CASE-1. It is possible to incorporate a product that is set apart from the member into the module.

That is, the various products incorporated in the intermediate floor module have a structure in which the final setting positions of each other are held by the intermediate floor suspension support column 4 which also serves as a permanent support made of steel.

As described above, the intermediate floor member 1, the steel ceiling beam member 5, and each product group are hoisted by the large-sized lifting machine, carried in and set at once.

Further, the intermediate floor module CA shown in FIG.
In the case of SE-3, the intermediate floor member 1, the ceiling beam member 5 via the suspension columns 4, and the deck plate 6 of the portion corresponding to the upper floor fixed to the ceiling beam member 5 are integrated into a module. Is.

The setting procedure of the intermediate floor module CASE-3 is the same as that of the intermediate floor module CASE-2.

However, since the deck plate 6 which is integrated and carried in by the intermediate floor module CASE-3 also serves as a concrete formwork, after setting the intermediate floor module, the upper floor concrete 71 should be poured. Thus, the intermediate floor module can be firmly fixed.

In any of the above cases of the intermediate floor module, after setting the intermediate floor module at a predetermined position,
The area below the intermediate floor can work independently of the area above the intermediate floor.

At the stage when the area is handed over, when the intermediate floor module is used, the products in the range incorporated in the intermediate floor module have completed the mutual setting, so compared with the conventional method. Man-hours for setting have been greatly reduced.

Further, for the remaining work after the installation of the products such as the piping 11 and the duct 12, the inspection work after the completion of the plant, and the finishing work of the wall 81, the intermediate floor member 1 of the intermediate floor module is permanently installed, not to mention during construction. In fact, since it remains even after the completion of the plant, it is possible to work by using the intermediate floor member 1 of the intermediate floor module as a scaffolding, and therefore work at high places is avoided.

FIG. 14 shows an example of the connection between the intermediate floor member 1, the suspension columns 4, the ceiling beam members 5, the deck plate 6, and the product to be incorporated.

[0135] The suspension strut 4 also serving as the intermediate floor member 1 and the support, and the suspension strut 4 also serving as the ceiling beam member 5 and the support
Are welded or bolted together.

The product to be incorporated (the pipe 11 in the example of this figure) is incorporated in the intermediate floor module by being attached to the suspension column 4 which also serves as a support.

FIG. 5 schematically shows the difference in the installation work sequence between the conventional method and the intermediate floor module, using the intermediate floor module CASE-3 as an example.

According to the conventional construction method, when the construction of floors and walls by the building side is completed, concrete curing is completed, and concrete strength is sufficiently secured, the ceiling, that is, the ceiling beam and deck plate that will be the formwork of the upper floor. Before laying the equipment, bring in various products such as equipment, pipes, ducts, etc. and temporarily put them on the floor.

Next, the sequence is such that the ceiling beam, deck plate, and reinforcing bar construction for construction work are carried out, the interior finishing work after the concrete placing and concrete curing period, and the area handing over are followed by the installation work on the equipment side. .

In the intermediate floor module construction method, equipment and piping 1 are used after the concrete curing period after floor and wall construction in the construction process.
1, carry in the duct 12 and the like.

Next, in parallel with the construction process, the intermediate floor member 1, the suspension columns 4, the ceiling beam members 5, the deck plate 6, and the reinforcing bars are incorporated into the intermediate floor module outside the building, and the intermediate floor module is loaded. I do.

After carrying in the intermediate floor module, the centering and setting are performed, the upper floor concrete is placed 71, the concrete is cured, and the interior is finished, and the area is over.

As described above, in the intermediate floor module construction method, the area delivery is advanced compared to the conventional construction method.
Due to the fact that the construction of piping, supports, etc. is almost modularized, piping connection with other rooms and fine adjustment work can be done in parallel during finishing work in the room, and scaffold assembly work can be eliminated. It will be possible to greatly shorten and labor saving on site work.

As described above, by adopting the intermediate floor module not only in the plant constituent equipment storage room of the plant building but also in the passage, the plant construction process is shortened while ensuring work safety. Even after the plant is completed, the intermediate floor member of the intermediate floor module remains as a permanent installation, and since the intermediate floor member can be used as a scaffold for inspection after completion, it is not necessary to leave many scaffolds on the floor, Work is safe and easy.

[0145]

According to the first aspect of the present invention, various works for the plant components located at the intermediate height between the floor and the ceiling can be safely performed on the intermediate floor between the floor and the ceiling. As a result, the work of assembling and removing the scaffold from the structure can be reduced, and the structure can be provided in which the construction process can be shortened.

According to the second aspect of the present invention, the plant component equipment is installed on the intermediate floor, and the plant component equipment can be safely installed and inspected from the intermediate floor without assembling a scaffold from the floor. In addition, since the middle floor is used as a support material and a work place for equipping plant constituent equipment at a high place between the floor and the ceiling, the construction of the plant is safe and the process is shortened. can get.

According to the invention of claim 3, in addition to the effect of the invention of claim 2, the middle floor serves as a support function and a work place for various works for the pipe extending from above to the floor. In addition, when the valve is equipped, the intermediate floor also functions as an operation base for the valve, and there is no need to forest the structure having those functions from the floor, and the floor surface can be widely used. It is obtained and preferable for safety.

According to the invention of claim 4, since the intermediate floor member and the plant component equipment can be carried in and installed at the same time,
In addition to the effect of providing a structure effective for shortening the construction process, various works can be safely performed on the intermediate floor between the floor and the ceiling, and the work of assembling and removing the scaffold from the floor is reduced, which leads to the construction. It is possible to obtain the effect of providing the structure in which the process shortening is achieved.

According to the invention of claim 5, in addition to the effect of the invention of claim 4, the ceiling constituent member can be carried into the installation position at the same time as the intermediate floor member and the plant constituent equipment, which further contributes to the shortening of the construction process. There is an effect that the structure can be provided, and since the ceiling component can be used as a suspension balance if desired, there is no need to newly prepare a suspension balance, and the construction process can be shortened more.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, since the deck plate of the ceiling can be carried into the installation position at the same time, it is possible to provide a structure capable of further shortening the construction process. The effect is obtained.

According to the invention of claim 7, the plant constituent equipment can be attached to the intermediate floor member in a compartment within the plant building and carried in at a time, and the transported intermediate floor member can be used as an intermediate floor in the compartment. As a result, it is possible to provide a method for constructing a plant that has the effect of shortening the construction process and the effect that various construction inspection work can be safely performed on the intermediate floor.

According to the invention of claim 8, in addition to the effect of the invention of claim 7, the equipment placed on the floor is put in first,
Other devices can be put in later, and the plant can be constructed quickly while adopting a smooth carry-in method so as not to interfere with each other, and the effect of further shortening the construction process can be obtained.

According to the invention of claim 9, in addition to the effect of the invention of claim 7 or claim 8, the ceiling component can be brought into the installation position at an early stage, and the construction process can be shortened, and if desired. Since the ceiling constituent member can be used as a suspension balance for the intermediate floor member and the plant constituent equipment attached thereto, the work of arranging and removing the suspension balance can be omitted, and the construction process can be further shortened.

According to the invention of claim 10, in addition to the effect of the invention of claim 9, the number of early installation points of the ceiling constituting member is increased and the construction process is further shortened.

According to the invention of claim 11, in addition to the effect of the invention of any one of claims 7 to 10, the effect that the equipment of the intermediate floor member can be easily constructed by using the cradle Is obtained.

According to the invention of claim 12, in addition to the effect of any one of claims 7 to 11,
The remaining work and inspection in the plant building section after the installation of the intermediate floor can be carried out smoothly, and the effect of further shortening the construction process can be obtained.

According to the thirteenth aspect of the present invention, since the building construction work and the work for integrally mounting the plant constituent equipment with the intermediate floor member are translated, the construction process can be shortened and the plant constituent equipment is mounted on the intermediate floor member. It can be carried in all at once, and the effect that various construction inspection work can be done safely by using the intermediate floor member as the intermediate floor in the section and the work of assembling and removing the scaffold from the floor is reduced, further shortening the process And the effect is achieved.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of the present invention, and is an elevational view showing a situation in which an intermediate floor module CASE-1 for a heat exchanger area is suspended by using a large lifting machine.

FIG. 2 is a view showing an embodiment of the present invention, and is an elevation view showing a situation in which the intermediate floor module CASE-2 for the heat exchanger area is suspended by using a large-sized lifting machine.

FIG. 3 is a view showing an embodiment of the present invention, and is an elevation view showing a situation in which an intermediate floor module CASE-3 for the heat exchanger area is set and ceiling concrete is placed.

FIG. 4 Intermediate floor module CASE for the heat exchanger area
3 shows an example of an arrangement of an intermediate floor member, suspension columns, a ceiling beam member, a deck plate, piping, etc. in FIG. 3, (a) is a view seen from the side of FIG. 3, and (b) is a view. (A) is a view as seen from the side of FIG.

FIG. 5 is a construction process diagram in which both the conventional construction method and the intermediate floor module construction method using the intermediate floor module CASE-3 for the heat exchanger area of the present invention as an example are compared and both start times are the same. is there.

FIG. 6 is an enlarged elevational view of the cradle portion of the intermediate floor module of the present invention.

FIG. 7 is a top plan view of the heat exchanger area according to the invention before installation of the intermediate floor module of the invention.

FIG. 8 shows an arrangement of intermediate floor beam members in a state where the intermediate floor module for the heat exchanger area of the present invention is installed in the heat exchanger area, and a floor surface stretched on the beam and stairs from the floor. FIG.

FIG. 9 is a top plan view of the intermediate floor module CASE-2 for the heat exchanger area of the present invention installed in the heat exchanger area.

FIG. 10 is an overall elevation view showing a hoisting operation situation of the intermediate floor module CASE-2 for the heat exchanger area of the present invention by the large-sized lifting machine.

FIG. 11 is a view showing an example of the present invention, and is an elevational view showing a state in which the intermediate floor module CASE-1 for passage areas according to the present invention is suspended by using a large-sized lifting machine.

FIG. 12 is a view showing an embodiment of the present invention, and is an elevation view showing a situation in which the intermediate floor module CASE-2 for the passage area according to the present invention is suspended by using a large-sized lifting machine.

FIG. 13 is a view showing an embodiment of the present invention, and is an elevation view showing a situation in which the intermediate floor module CASE-3 for passages according to the present invention is set in the passage area and the ceiling concrete of the passages is placed. is there.

FIG. 14: Intermediate floor module CASE- for aisle area
3 shows an example of the connection of the intermediate floor member, the support pillar, the ceiling beam member, the deck plate, the piping, etc. in FIG. 3, (a) is a side view of FIG. 3, and (b) is ( a) A view seen from the side of the drawing, respectively.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Intermediate floor member, 2 ... Hanging piece, 3 ... Cradle, 4 ... Hanging pillar, 5 ... Ceiling beam member, 6 ... Deck plate, 11 ...
Piping, 12 ... Duct, 13 ... Cable tray, 14 ... Valve, 15 ... Support, 71 ... Upper floor (lower ceiling) concrete, 81 ... Wall, 82 ... Floor, 83 ... Heat exchanger, 9
0 ... Large hoist, 91 ... Large hook lifting hook, 92
... wire, 83 ... board.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koichi Gota 3-1-1, Saiwaicho, Hitachi-shi, Ibaraki Hitachi Ltd. Hitachi factory (72) Inventor Akinori Tajiri 3-chome, Saiwaicho, Hitachi, Ibaraki No. 1 Hitachi Ltd., Hitachi Works (72) Inventor Naoto Yoshida 3-1-1, Sachimachi, Hitachi, Ibaraki Hitachi Ltd. (72) Inventor, Hitachi, Ltd. Sakae Ebata Hitachi City, Ibaraki Prefecture 3-1, 1-1 Machi, Hitachi, Ltd. Hitachi factory (72) Inventor Tatsuo Makita 1-1-14, Kanda, Chiyoda-ku, Tokyo Hirate Plant Construction Co., Ltd. (72) Inventor Keiya Sato Tokyo 1-11-14 Kanda, Chiyoda-ku, Tokyo Inside Hiritsubishi Construction Co., Ltd.

Claims (13)

[Claims] 1. A plant constituent device is arranged in the vertical direction midway of a partitioned area in a plant building, and an intermediate floor is provided midway in the vertical direction between the floor and the ceiling of the parcel. The structure inside the plant building characterized by 2. A plant in which plant constituent equipment is arranged in the vertical direction midway of a partitioned area in a plant building, wherein an intermediate floor is provided midway in the vertical direction between the floor and the ceiling of said partition, and A plant building structure, characterized in that the plant constituent equipment is installed on the middle floor. 3. The plant constituent equipment according to claim 2, wherein the plant constituent equipment is connected to a pipe connected to equipment installed on a floor lower than an intermediate floor and / or is attached to the pipe to control the flow rate in the pipe. A plant building structure characterized by including a valve. 4. A plant constituent device, which is arranged in the vertical direction of a partitioned area in a plant building, is integrated with an intermediate floor member installed at a height midway between the ceiling and floor of the partitioned area. An intermediate floor structure that is equipped with. 5. A plant constituent device arranged in the vertical direction of a partitioned area in a plant building and a ceiling constituent member of the partition are installed at a height midway between the ceiling and floor of the partitioned area. An intermediate floor structure, which is integrally equipped with an intermediate floor member installed in a ceiling, and in which the ceiling constituent member and the intermediate floor member are coupled via a suspending member. 6. The ceiling member according to claim 5, wherein the suspension member is a pillar that supports the ceiling component member, and the ceiling component member is a ceiling beam member and a deck plate installed on the ceiling beam member. Middle floor structure. 7. A method of constructing a plant, wherein component equipment of a plant installed in one section of a plant building is integrally attached to an intermediate floor member, and the intermediate floor member is installed at an intermediate height of the one section. . 8. A large-scale device installed on the floor of the compartment is placed first among the components of the plant installed in one compartment of the plant building, and the height of the ceiling and floor of the compartment is set to a middle height later. The other component equipment to be deployed is integrally attached to the intermediate floor member, and the intermediate floor member is post-inserted together in the compartment, and the intermediate floor member is placed at an intermediate height between the ceiling and the floor of the compartment. How to construct a plant that is equipped with. 9. The ceiling member according to claim 7 or 8, wherein the structural member of the ceiling of the section and the intermediate floor member are connected via a suspending member, and the ceiling of the ceiling is opened when the ceiling is opened. The structural member and the intermediate floor member are simultaneously hung down toward the compartment, and the ceiling structural member and the intermediate floor member are installed in the compartment so that the intermediate height between the ceiling and the floor of the compartment. A method for constructing a plant, characterized in that the intermediate floor member is installed in the plant. 10. The suspension member according to claim 7, wherein the suspension member is a pillar that supports the constituent members of the ceiling, and the constituent members of the ceiling are a ceiling beam member and a deck plate installed on the ceiling beam member. How to construct a plant. 11. The pedestal according to any one of claims 7 to 10, wherein a pedestal is provided at an intermediate height of a side wall forming the compartment so as to project into the compartment, and the intermediate floor member is the pedestal. A method for constructing a plant, characterized in that an intermediate floor is installed in the compartment by supporting the intermediate floor. 12. The plant according to any one of claims 7 to 11, wherein a worker passes through an intermediate floor member provided in the compartment to construct a component of the plant or a wall or an intermediate floor of the compartment. A method of constructing a plant, comprising performing a construction work on a device carried into the compartment after the equipment is installed or inspecting a component device of a plant in the compartment. 13. A work for integrally mounting a component device of a plant, which is installed in one section of a plant building, with an intermediate floor member, and a work for constructing a side wall and a floor of the section are performed in parallel, and the section Of the plant, wherein the intermediate floor is hung from above in the compartment to a height in the compartment during the period when the ceiling of the compartment is open, and the middle floor member is installed at the middle height in the compartment. Method.