JP2003066177A - Module system and method of assembling the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a module system whose operating efficiency and operating environment are enhanced, whose safety is ensured and whose operation can be adjusted by preventing the overlap of the operation when a construction-side steel structure and a maker-sides structure progress separately after an area has been delivered from the construction side of a building body in an atomic power plant. SOLUTION: In a construction complex module structure in which the construction-side steel structure arranged on the floor, the wall or the ceiling part of a body and the maker-side structure (an apparatus, a pipe, a structure, a support, a cable tray or the like) are formed as an integral structure, the structure of the construction-side steel structure or the maker-side structure is provided with the frame function of a module, and a means by which the flow of a force (the transmission of a stress) to the structure is structured to be transmitted wholly to a foundation slab.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a module system used in a nuclear power plant and an assembling method thereof.

[0002]

2. Description of the Related Art In the conventional construction method of a nuclear power plant, the construction work of the manufacturer side (equipment, piping, structure, support, cable tray, etc.) is carried out by assembling each product individually at the site. Are doing

At this time, the construction work on site is carried out by each specialized construction contractor, and the scaffolds for work are installed and removed individually. Further, a unit test and inspection (welding, operation of equipment) are also carried out in the same manner, or modularized in advance at the factory, and the above-mentioned construction and unit test and inspection are carried out at the factory. After that, when the installation of the structure is completed, the floor and wall concrete are cast, and then the ceiling work is completed.

The floor, walls, and ceiling of each area of the nuclear power plant have a reinforced concrete structure, and a large number of manufacturers-side structures (equipment, piping, structures, supports, cable trays, etc.) are arranged on the floor surface. ing. In that case, calculate the installation strength of each structure that correlates with the manufacturer's structure (equipment, piping, structure, support, cable tray, etc.) in the module so that the basic specifications and seismic resistance standards are satisfied. There is.

Further, regarding the module setting, it is necessary to adjust the standards of the floor level of the building and the floor level of the module, but conventionally, in most cases, after the module is installed, the standard is set using a level meter or the like. I checked and set the adjustment.

[0006]

In a nuclear power plant, a building-side steel frame structure arranged on the floor and walls of a reinforced concrete frame, a ceiling side structure, and a manufacturer-side structure (equipment, piping, structure, support, cable tray, etc.). ) Is
The jurisdiction is different. Therefore, after the area is handed over from the construction side of the building structure at the time of completion, the construction side steel frame structure and the construction of the manufacturer side will proceed separately, and sometimes the work wraps up, Improvements in work efficiency and work environment, ensuring safety, and work adjustment are required.

Further, in the case of a composite module in which a building-side steel frame structure and a manufacturer-side structure (equipment, piping, structure, support, cable tray, etc.) are combined, a floor,
Sufficient consideration has not been given to the structural connection between the building structure of each wall and ceiling and the reinforcing bar.

An object of the present invention is to construct a room module completely by a construction method in which a building structure and a maker structure are integrated to construct a floor structure, a wall structure, a ceiling structure and a reinforcing bar structure. With regard to the joint portion of, the structure is such that all the flow of force (transmission of stress) to the structure is transmitted to the foundation slab.

[0009]

SUMMARY OF THE INVENTION The present invention is a floor of a body,
In the composite module structure in which the building-side steel frame structure placed on the wall and ceiling and the manufacturer-side structure (equipment, piping, structure, support, cable tray, etc.) are integrated, the flow of force to the structure ( The transmission of stress) is such that all the stress is transmitted to the foundation slab.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is a control rod drive system hydraulic control unit (HCU).
An example applied to a module will be specifically described.

The nuclear reactor building of a nuclear power plant is generally located on the lower and upper floors centered on the ground level, and the control rod drive system water pressure control unit rooms are installed at both ends of the lower part of the reactor containment vessel. To be done. When assembling such an HCU module, in the conventional assembly method, in parallel with the construction work on the lowest floor of the reactor building,
It was necessary to put some of the equipment parts (cylinder, accumulator, etc.) in advance.

Further, for the parts that obstruct the construction work, it is necessary to post-insert the parts into the HCU room through the temporary opening while adjusting the space to the building side by providing a temporary opening on the ceiling surface. The installation method of the HCU room waits for the time when the construction work is completed and then assembles the parts temporarily placed in the HCU room, which is a critical path in the construction process of the current technology.

In order to shorten the construction process, it is necessary to utilize various features that are not available in conventional plants, such as a long carry-in route to the water pressure control room and a small hatch door at the opening. The present invention makes it easy to assemble the water pressure control chamber, which was difficult to implement, by integrating not only the manufacturer's responsibility but also the building's responsibility. In a conventional plant, the HCU, which is under the control of the manufacturer, and the steel frame, which is under the responsibility of the building, have been carried in independently, and the following inconvenience has been encountered.

(1) In the conventional method, the nitrogen cylinder (N2 cylinder), the accumulator and the like were separately put in, so that the working efficiency was lowered. (2) The installation location was on the 3rd basement floor (mat floor), and the import route was long, which required a large number of man-hours for import and installation. (3) The gap between the HCU and the frame is small and installation work is difficult. (4)
It is difficult to attach the wall and HCU afterwards. By integrating as a composite module as in the present invention, the installation process can be shortened, the adjustment time of the connecting portion of the building structure can be reduced, and the HCU installation problem can be solved. In an embodiment of the present invention, in addition to the responsibilities of the manufacturer such as HCU, the responsibilities of the building such as steel frame, main frame, steel plate formwork, deck plate, etc. are assembled at the factory or on site, and as a composite building module at once. Carry in and install. This makes it possible to significantly reduce the number of installation steps. FIG. 1 is a perspective view showing an outline of a hydraulic control unit (HCU) module of a building-side steel frame composite module of the present invention. Devices constituting the HCU (hereinafter simply referred to as HCU devices) 2a, 2b, electrical cable ducts 2d, 2e for storing signal lines for driving and controlling the HCU device, HCU internal pipe 2c (CRD scrum pipe), HCU device 2a , 2b
H that is composed of the operation platform 2f used when inspecting etc.
The CU module is fixed by the HCU frame 2g, and the HCU equipment and the like are supported by it and unitized.

Next, the manufacturer-side structures (equipment, piping, structure, support, cable tray, etc.) are integrated by the module skids 2h, 2i extending vertically and horizontally provided on the outside. Further, an iron plate reinforcing material 2j is attached to secure the strength.

Further, the building-side steel frame structures 2k and 2l extending in the vertical and horizontal directions, respectively, are incorporated as a module frame and connected to the module skids 2h and 2i to fix the entire module. A reinforcing bar 2n is built in the outdoor wall 2m of the building and is used as a reinforcing material. To further reinforce, the building-side steel frame structures 2k and 2l also have reinforcing bars built therein.

The connection between the reinforcing bar 2n and the building-side steel frame structure 2k, 2l will be described later in detail with reference to FIG. Before installing the HCU module, stretch out the mat spine 2O. During this construction, the module support posts 2P are leveled. The HCU module is hung on it, the setting is completed, and the installation work is completed. After that, cement is poured and fixed.

FIG. 2 is a diagram for explaining the detailed structure of the portion A in FIG. When leveling, the module must be installed horizontally. In the past, fine adjustment was performed using a backing plate, etc., and settings were made to keep it horizontal. In the embodiment of the present invention, the fine adjustment is performed using the expansion / contraction function.

At present, the rotary expansion type and the jack-up type are conceivable, but the rotary expansion type module support column will be described below. Since the receiving plate 3a supporting the module is for level adjustment, the receiving plate 3a is moved up and down by rotating the expansion and contraction adjusting handle 3b, and the installation level can be adjusted. The expansion and contraction mechanism 3c expands and contracts because it is threaded. The rotary telescopic module support column supports the entire rotary telescopic module support column by the base 3e. The base 3e is between the embedded hardware 3d installed on the floor in advance,
Secure with bolts 3f. The upper end of the column main bar 3g is screwed after the adjustment.

In addition to the rotary expansion type, similarly, the jack-up type (equipped in a private car) module support column has the same principle. Since the building-side steel frame is present on the pillar main bar 3g, the vertically extending column main bar 3h is arranged to penetrate the receiving plate 3a as shown in the figure.

FIG. 3 is a bird's-eye view showing the relationship between the wall, the building-side steel frame, and the spine. Building side steel frames 2k, 2l, module skids 2h, which respectively extend in the vertical and horizontal directions,
In the module configured by 2i, the structural positional relationship between the wall 5p, the building side steel frame 2k and the wall reinforcing bars 4i, 4f is as follows: the wall 5p is the wall reinforcing bar 4i and the building side steel frame 2k is the wall reinforcing bar 4f. And install them in symmetrical positions to withstand bending stress.

In this case, the wall reinforcement 4f is the structural upper wall reinforcement 4
When it interferes with i, the structure is such that it penetrates the building side steel frame 2k as shown in the figure. This is not the case when the reinforcing bar can be avoided from the building side steel frame 2k. The building-side steel frame 2k serves to disperse the bending moment of the wall, the column axis stress, and the horizontal load, as well as the role of the structure for making the module larger.

FIG. 4 is a view showing in detail the connection diagram of the wall, the building side steel frame and the spine in FIG. The module is
The building side steel frame 5a is treated as a module member, the receiving plate 5b supporting the steel frame 5a and the embedded metal 5d are set in advance on the floor 5C, and the module supporting column 5e is installed thereon to support the entire module. There is. The module support column 5e is a rotary expansion type, so that the level of the receiving plate 5b can be finely adjusted, and the reference level of the entire module can be adjusted.

The building-side steel frame 5a is used as a pillar of a wall by incorporating reinforcing bars and the like therein. Reinforcing bars are inserted as reinforcement when the wall receives a bending moment, but there is no particular problem when the reinforcing bars are arranged so as not to interfere with the building-side steel frame 5a. However, if it is impossible due to the module structure, it will be handled as shown in this figure.

The wall rebar 5f is fixed by making a hole in the building-side steel frame 5a. In this case, a sleeve 55f or the like is provided so as to penetrate the building-side steel frame and to fix the stress so as to be transmitted. In that case, it is necessary to fill an adhesive substance (high-strength non-stretching mortar, adhesive, etc.) between the wall reinforcement 5f and the sleeve in order to strengthen the contact.

The other wall reinforcing bar 5g is a building side steel frame 5a.
In order to be integrated with, the U bolt 5i is fixed to the angle 5h and the wall reinforcing bar 5g is supported. Angle 5h and construction side steel frame 5
It is integrated with a by welding or bolts. Details of the building-side steel frame 5a, the wall reinforcing bars 5f, and the angles 5h are shown in FIG. This figure shows the building side steel frame 5a, wall reinforcement 5f, 5g,
The correlation between the sleeve 55f, the angle 5h, and the U bolt 5I is shown.

Further, although the column main bars 5k and 5l are structurally necessary, a method of connecting the column main bars 5l with a sleeve joint 5m (or a screw joint may be used) is adopted. On the other hand, with respect to the column main bar 5k, the receiving plate 5b is screwed, or the sleeve is filled with an adhesive substance, or is fixed by welding.

In this case, since the building-side steel frame 5a also serves as a beam, stress can be transmitted between the receiving plates 5b as in the structure shown in the figure. The construction side steel frame 5a and the receiving plate 5b are
Since they are integrated by screwing or welding, the stress applied to the building side steel frame 5a, the receiving plate 5b, and the column main bar 5k is
It is transmitted to the floor 5C. In order to disperse this stress, it can be realized by further integrating the construction-side main steel frame 5a and the column main reinforcement 5l by a hook 5n in terms of structure.

Further, molds (iron plates) 5o and 5p are used as molds and reinforcing materials for filling concrete, and studs 5q and 5r are used to improve the bondability with concrete.
By having, it becomes possible to increase the strength. When filling with concrete, it is necessary to make holes for confirming the filling in the molds (iron plates) 5o, 5p to check the concrete filling condition. This is because when the air holes are opened, the work efficiency of filling is improved.

FIG. 6 is a detailed structural diagram of the portion B of FIG.
It has the same structure as FIG. 4, and FIG. 4 shows the flow of stress in the longitudinal direction, while FIG. 6 shows the flow of stress in the lateral direction. Column main muscle 4
h, the sleeve joint 7a (or something like a screw joint may be used), the form (iron plate) 5p and the column main bar 4h are fixed by filling the sleeve 7b with an adhesive substance, and the column main bar 4i is , Is fixed by screwing and is integrated with the form (iron plate) 5p.

The building-side steel frames 5a and 4b are fixed by welding or bolting. Building side steel frame 4b and pillar main bar 5l
And are fixed by bolting. Therefore, with the structure of this patent regarding the stress in the lateral direction and the longitudinal direction, the transmission of the stress in the nuclear power plant construction becomes smooth.

[0032]

According to the present invention, in a module for integrally assembling members such as a manufacturer-side structure, a building-side steel frame, and a reinforcing bar, by using the building-side steel frame or the manufacturer-side structure as a module frame, All of the force flow (stress transfer) to can be transferred to the foundation slab.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a hydraulic control unit module of a building-side permanently installed steel frame composite module of the present invention.

FIG. 2 is a detailed view of an A portion for explaining the module reference level adjusting jig in FIG.

FIG. 3 is a bird's-eye view showing the relationship between the wall, the building-side steel frame, and the spine.

FIG. 4 is a detailed view showing the connection between the wall, the building side steel frame and the spine in FIG.

5 is a bird's-eye view illustrating the wall spine and steel frame in FIG. 4. FIG.

FIG. 6 is a diagram illustrating a module installation method.

[Explanation of symbols]

2a, 2b ... HCU equipment, 2d, 2e ... Electrical cable duct, 2c ... HCU internal piping (CRD scrum piping), 2f ... Inspection operation platform, 2g ... HCU frame, 2h, 2i ... Module skid, 2j ... Iron plate reinforcement Material, 2k, 2l ... Steel structure on the building side, 2h, 2i ... Module skid, 2
m ... Building outdoor wall, 2n ... Reinforcing bar, 2O ... Mat reinforcing bar, 2P ... Module support column 5a ... Building side main steel frame, 5b ... Receiving plate, 5C ... Floor, 5d
… Embedded hardware, 5e… Module support column, 5f… Wall reinforcement is 55f… Sleeve, 5g… Wall reinforcement, 5h… Angle, 5i… U bolt.

Continued front page    (72) Inventor Koichi Murayama             3-1-1 Sachimachi, Hitachi City, Ibaraki Prefecture Stock Association             Hitachi, Ltd. Nuclear Business Division (72) Inventor Chinen Masatsune             Hitachi 2-3-1, Saiwaicho, Hitachi-shi, Ibaraki             Engineering Co., Ltd. (72) Inventor Koichi Gota             3-1-1 Sachimachi, Hitachi City, Ibaraki Prefecture Stock Association             Hitachi, Ltd. Nuclear Business Division (72) Inventor Miki Yoshida             3-1-1 Sachimachi, Hitachi City, Ibaraki Prefecture Stock Association             Hitachi, Ltd. Nuclear Business Division

Claims (8)

[Claims] 1. Equipment, piping, structure, support,
When a module is assembled by integrating a maker-side structure that constitutes a room installed in a building of a nuclear power plant with a cable tray, and a building-side structure that includes a steel frame and a reinforcing bar, the building-side steel frame or The maker side structure is used as a frame of the module, and the maker side structure is incorporated in the module, and a pillar, a wall, a beam,
Incorporating a steel frame into the part corresponding to the floor, the steel frame, the reinforcing bar,
A method of assembling a module system, characterized in that a module support base for supporting the module, a mold, and a foundation slab are integrated. 2. The method of assembling a module system according to claim 1, wherein a stud is welded or bolted to the side surface of the mold to ensure the bondability and strength to the concrete on the side surface. 3. The method of assembling a module system according to claim 1, wherein a hole is made in the steel frame forming the frame, and a reinforcing bar is incorporated therein. 4. The method for assembling a module system according to claim 3, wherein a steel frame is welded or bolted to a steel frame forming the frame, and the reinforcing bar is fixed by using the steel frame. 5. The method for assembling a module system according to claim 1, wherein a steel plate constituting the frame is welded or bolted with an iron plate to replace the formwork. 6. The method of assembling a module system according to claim 1, wherein a stud is welded or bolted to the lower portion of the frame in order to improve the jointability with the lower concrete. 7. The method according to claim 1, wherein in order to carry the module into the setting concrete, the embedded concrete is set in advance on the surface of the connecting concrete, and the jig for adjusting the reference level of the module is welded thereto. Alternatively, a method of assembling a module system in which the jig and the steel frame forming the frame of the module are welded or fixed by bolting after adjusting the level and then adjusting the level to obtain the reference level of the module. 8. Equipment, piping, structure, support,
A maker-side structure that includes a cable tray and constitutes a room installed in a building of a nuclear power plant, and a building-side structure that includes a steel frame and a reinforcing bar, and the maker-side structure and the building-side structure are The module is integrally assembled to form a module, and the building side steel frame or the maker side structure functions as a frame of the module, and the maker side structure is incorporated in the module, and parts corresponding to columns, walls, beams and floors. A module system characterized in that a steel frame is incorporated into the steel frame, and the steel frame, the reinforcing bar, a module support base for supporting the module, a mold, and a foundation slab are integrated.