JP3433007B2 - Reinforced concrete containment vessel 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 reinforced concrete reactor containment vessel in a boiling water nuclear power plant, and in particular, a reinforced concrete reactor containment for producing a top slab and a sea lug that secures horizontal accuracy of a top plate. Regarding the container and its construction method.

[0002]

2. Description of the Related Art Reinforced concrete reactor containment vessels at boiling water nuclear power plants
ainment Vessel, hereinafter abbreviated as RCCV) is shown in FIG.
As shown in the vertical sectional view of RCCV1, top slab 2
And the cylindrical wall 3 and the base mat 4 etc.,
It is configured to store the reactor pressure vessel 5 therein.

Top slab 2 in conventional RCCV1
As shown in the enlarged vertical sectional view of the main part of FIG.
An annular top plate 7 to which a sear lug 6 is attached by a flat bar, a cylindrical liner 8 and a cylindrical liner anchor 9 are manufactured as an integrated structure in a factory, and after they are brought into the field, bar arrangement and concrete placement (not shown) around the site. To make the cylindrical wall 3 made of reinforced concrete.

Thereafter, as the top slab 2, a top slab liner 10 and a top slab portion liner anchor 11 which are separately manufactured in a factory or on-site are integrally manufactured.
It is once mounted on the cylindrical wall 3 using a crane or the like, and after the installation dimensions of the top plate 7 are adjusted, the top slab liner 10 is cut off and cut on the ground.

The top slab liner 10 that has been cut and processed
And the top slab liner anchor 11 are mounted on the cylindrical wall 3 again, and the top slab liner and the top plate are joined 12
In (1), the structure is integrated by welding. further,
The top slab liner 10 and the liner anchor 11 of the top slab portion are subjected to reinforcement (not shown) and concrete placement to construct a top slab 2 made of reinforced concrete, and form the RCCV 1 together with the cylindrical wall 3.

As shown in the enlarged plan view of the main part of FIG. 9, a shear lug 6 formed of a flat bar is attached to the top plate 7 of the top slab 2 in the vicinity of the outer circumference.
The shear lug 6 is annularly attached so as to surround the top slab liner 10 and secures the levelness of the top plate 7 and the like against heat input applied when the top slab liner 10 and the top plate 7 are welded at the joint 12. The main purpose is to maintain the shape.

Further, after the completion of the reinforced concrete construction for the top slab 2, the top slab 2 also plays a role as a shear reinforcing material for concrete against the horizontal force applied to the top slab 2. In addition, the top slab liner anchor 11 is cut out in a part of the top slab liner 10 and embedded
13 are provided.

[0008]

The shear lug 6 provided on the top plate 7 of the top slab 2 uses a flat bar and stands upright on the upper surface of the top plate 7 as shown in FIG. Since it is attached, the manufacturing accuracy is not ensured and the manufacturability is inferior, and the effect of preventing the deformation of the shape is weak against the horizontal strain generated by the heat input by welding at the time of joining because the joining area is small.

Regarding the top slab liner 10,
The top slab liner anchor 11 is formed before the top slab liner 10 and the top plate 7 are welded to each other when the top slab 2 is constructed when the top wall slab 2 is constructed by adding the extra length of the cylinder wall 3 in advance at the time of factory production. The top slab liner 10 integrated with the above is mounted on the cylindrical wall 3 by a crane or the like.

At this time, it is necessary to adjust the installation dimensions with the top plate 7 formed as a preceding work together with the cylindrical wall 3, and then temporarily lower it to the ground for cutting work. The problem is that the joining process is complicated, for example, the mounting work is required twice.

[0011] It is an object of the present invention, it reinforced concrete atoms simplified <br/> The rewritable suppress thermal deformation of Shiaragu provided in the top plate at the top slab, the work of mounting the top slab to the circular tubular wall It is to provide a reactor containment vessel and its construction method.

[0012]

To achieve the above object, according to an aspect of, reinforced concrete containment vessel according to the first aspect of the present invention, its Shiaragu longitudinal section is H-shaped on the upper surface of the top plate of the top slab Side of H-shaped shear lug
Arranged so that one of the faces faces downward and turned downward
It is characterized in that the surface is provided so as to be in contact with the upper surface of the top plate . The strain generated during welding on the top plate is effectively suppressed by the wide H-shaped shear lug provided on the top surface of the top plate.

According to a second aspect of the present invention, there is provided a reinforced concrete reactor containment vessel which includes a cylindrical liner anchor and a cylindrical liner anchor.
Reinforcing bar reinforcement and concrete pouring with the inner structure
That the outer edge of the top plate joined to the upper end of the cylindrical wall provided Shiaragu by flat bar, said top playing
And the top slab liner of the top slab are welded . The shear lug of the flat bar provided on the outer peripheral edge of the top plate is easy to install and effectively suppresses the strain generated during welding on the top plate.

According to a third aspect of the present invention, there is provided a reinforced concrete reactor containment vessel, which includes a cylindrical liner anchor and a cylindrical liner anchor.
Cylinder provided at the upper end of the inner wall of the liner and this cylindrical part liner
A cylindrical wall for reinforcing bar reinforcement and concrete placement with a part thick plate liner as an integral structure, and a top slab for reinforcing bar reinforcement and concrete placement with a top plate, top slab liner and top slab liner anchor as an integral structure The joint between the thick plate liner and the top plate is joined by welding a backing metal T-joint or a double-sided groove joint.

The top slab and the cylindrical wall are firmly fixed by a simple joining method such as welding of a backing metal T-joint or a double-sided groove joint at the joint between the top plate of the top slab and the thick cylinder liner of the cylindrical portion of the cylindrical wall. To be joined.

According to a fourth aspect of the present invention, there is provided a method for constructing a reinforced concrete reactor containment vessel, wherein a cylindrical liner anchor, a cylindrical liner and an upper end of an inner wall of the cylindrical liner are provided.
After mounting the top plate, top slab liner and top slab part liner anchor as a top slab on the cylinder wall constructed by partially reinforced bar arrangement and concrete placement as a unified structure of the thick plate liner of the cylindrical part , The cylindrical thick plate liner of the cylindrical wall and the top plate of the top slab are backed and joined by welding such as a metal T-joint or a double-sided groove joint, and reinforcing bar reinforcement and concrete placing are performed. .

A top slab having the same structure is mounted on a cylindrical wall constructed by first placing some reinforcing bars and concrete as an integrated structure at a factory or on-site assembly. After joining the plate liner and the top plate of the top slab at the joint by welding with a backing metal T-joint or double-sided groove joint, etc., the remaining reinforcing bar reinforcement and concrete are placed.

According to a fifth aspect of the present invention, there is provided a reinforced concrete reactor containment vessel in which a cylindrical liner anchor and a cylindrical liner are integrally structured to form a reinforcing bar reinforcement and a concrete wall for concrete placement, a cylindrical thick plate liner and a top. A plate and a top slab liner and a top slab part liner An anchor is integrated into a top slab for reinforcing bar reinforcement and concrete placement, and a backing metal T-joint or double-sided groove is provided at the joint between the cylindrical part liner and the cylindrical part thick plate liner. The feature is that the joints are joined by welding.

The top slab and the cylindrical wall are simply joined together by welding such as a backing metal T-joint or a double-sided groove joint at the joint between the cylindrical thick plate liner attached to the top slab and the cylindrical liner of the cylindrical wall. It is firmly joined by law.

According to a sixth aspect of the present invention, there is provided a method for constructing a reinforced concrete reactor containment vessel, wherein a cylindrical liner anchor and a cylindrical liner are integrally formed on a cylindrical wall constructed by reinforcing bar reinforcement and concrete casting. After mounting the cylindrical part thick plate liner and the top plate and the top slab liner and the top slab part liner anchor as an integral structure as the top slab, the cylindrical part liner of the cylindrical wall and the cylindrical part plate liner attached to the top slab are installed. At the joint, the backing metal T-joint or the double-sided groove joint is joined by welding, and the reinforcing bar reinforcement and concrete are placed.

The top slab having the same structure is mounted on the cylindrical wall constructed by first placing some reinforcing bars and concrete as an integrated structure by a factory or on-site assembly, and the cylindrical liner of the cylindrical wall is mounted. And the cylindrical thick plate liner attached to the top slab are backed and joined by welding such as a metal T-joint or a double-sided groove joint, and then the remaining reinforcing bar reinforcement and concrete placement.

According to a seventh aspect of the present invention, there is provided a reinforced concrete reactor containment vessel including a cylindrical liner anchor and a cylindrical liner anchor.
Cylinder provided at the upper end of the inner wall of the liner and this cylindrical part liner
A cylindrical wall for reinforcing bar reinforcement and concrete placing with a liner plate integrated structure, and a top slab for reinforcing bar reinforcement and concrete placing with a top slab liner and top slab liner anchor integrated structure It is characterized in that the liner and the top slab liner are joined by welding a backing metal T-joint or a double-sided groove joint at the joint.

The top slab and the cylindrical wall are firmly joined by a simple joining method such as welding of a backing metal T-joint or a double-sided groove joint in the top plate of the top slab and the thick plate liner of the cylindrical portion of the cylindrical wall.

In the method for constructing a reinforced concrete reactor containment vessel according to the present invention, a cylindrical liner anchor, a cylindrical liner, and an upper end of an inner wall of the cylindrical liner are provided.
After mounting the top slab liner and the top slab liner anchor as a top slab as an integral structure on the cylindrical wall constructed by partially reinforcing the reinforcing bar and concrete placement as an integral structure of the thick plate liner of the cylindrical part And the cylindrical thick plate liner are backed and joined by welding such as a metal T-joint or a double-sided groove joint, and at the same time, reinforcing bar reinforcement and concrete placement are performed.

The top slab having the same structure is mounted on the cylindrical wall constructed by placing some reinforcing bars and concrete as an integrated structure at the factory or on-site assembly, and the thickness of the cylindrical portion of the cylindrical wall After joining the plate liner and the top slab liner of the top slab by welding with a backing metal T-joint or a double-sided groove joint at the joint, the remaining reinforcing bar reinforcement and concrete are placed.

According to a ninth aspect of the present invention, there is provided a reinforced concrete reactor containment vessel in which a cylindrical wall liner anchor and a cylindrical liner are integrally structured, and a cylindrical wall for reinforcing bar reinforcement and concrete placement, a cylindrical plate thick liner and a tops. A top slab having a reinforcement liner and a top slab part liner anchor as an integrated structure for reinforcing bar reinforcement and concrete placement is provided with a backing metal T-joint at the joint part of the cylindrical part thick plate liner and the cylindrical part thick plate liner attached to the top slab. It is characterized in that the joints on both sides are joined by welding.

The top slab and the cylindrical wall are simply joined together by welding such as a backing metal T-joint or a double-sided groove joint at the joint between the cylindrical thick plate liner attached to the top slab and the cylindrical liner of the cylindrical wall. It is firmly joined by law.

According to a tenth aspect of the present invention, there is provided a method for constructing a reinforced concrete reactor containment vessel in which a cylindrical liner anchor and a cylindrical liner are integrally formed on a cylindrical wall constructed by reinforcing bar reinforcement and concrete casting. After mounting the cylindrical thick plate liner and the top slab liner as a top slab and the top slab liner anchor as an integrated structure, the cylindrical liner and the cylindrical thick plate liner are backed with a metal T.
It is characterized in that joints or groove joints on both sides are joined by welding, and at the same time, reinforcing bars and concrete are placed.

The top slab having the same structure is mounted on the cylindrical wall constructed by placing some reinforcing bars and concrete as an integrated structure in the factory or on-site assembly, and the cylindrical liner of the cylindrical wall is mounted. And the cylindrical thick plate liner attached to the top slab are joined by welding with a backing metal T-joint or double-sided groove joint, and then the remaining reinforcing bar reinforcement and concrete are placed.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings. It should be noted that the same components as those in the above-described conventional technique are designated by the same reference numerals, and detailed description thereof will be omitted. The first embodiment relates to claim 1, and as shown in the enlarged vertical sectional view of the main part of FIG. 1, the RCCV 1 is configured by mounting a top slab 14 on a cylindrical wall 3.

The cylindrical wall 3 is constructed of a reinforced concrete cylindrical wall 3 around the top plate 7, the cylindrical liner 8 and the cylindrical liner anchor 9 by reinforcing bar reinforcement (not shown) and concrete casting. Further, the top slab 14 is formed by a top slab liner 10 having a top slab portion liner anchor 11 attached to the upper surface.
The top plate 7 is mounted on the cylindrical wall 3 by a crane or the like.

The shear lug 15 is made of an annular H-shaped steel so as to surround the outer periphery of the top plate 7. On the top slab liner 10, the top plate 7, and the shear lug 15, reinforcing bars (not shown) are laid out and concrete is placed to construct the top slab 14.

Next, the operation of the above configuration will be described. The use of H-shaped steel for the shear lug 15 increases the contact surface between the shear lug 15 and the top plate 7 and stabilizes the shape. For this reason, the manufacturability such as welding is improved and the manufacturing accuracy is easily ensured. In addition, the effect of preventing deformation of the top plate 7 and the like with respect to heat input during welding of the top plate 7 and the top slab liner 10 is improved.

The second embodiment relates to claim 2, and in the top slab 16 mounted on the cylindrical wall 3 to construct the RCCV 1 together, as shown in the enlarged longitudinal sectional view of the main part of FIG. Shear lug 17 formed by a flat bar orthogonal to the top plate 7 at the outer peripheral edge of the top plate 7 joined to
Is provided and configured. Note that the configuration other than this is the same as the first
The description is omitted because it is the same as the embodiment.

As a function of the above configuration, when attaching the shear lug 17 to the top plate 7, the bottom and side surfaces of the shear lug 17 can be easily positioned by a temporary member or the like not shown.

By this positioning and the like, the shear lug 17 is stabilized in shape, so that manufacturability such as welding can be improved and manufacturing accuracy can be easily secured. Also, Cialag 17
By arranging at the outer peripheral edge of the top plate 7,
Since the effect of restraining the horizontal force is enhanced, the effect of preventing deformation against heat input due to welding of the top plate 7 and the top slab liner 10 is improved.

The third embodiment relates to claim 3 and claim 4, and as shown in the enlarged longitudinal sectional view of the main part of FIG.
The top slab 14 which constructs 1 is the top slab liner 10 to which the top slab portion liner anchor 11 is attached, and the shear lug 15 of the first embodiment or the second embodiment, which is arranged so as to surround the outer periphery on the upper surface thereof. The top plate 7 is provided with a shear lug 17.

The cylindrical wall 18 is composed of a cylindrical liner anchor 9 and a cylindrical liner 8 having a cylindrical thick plate liner 19, and the top slab 14 is mounted on the cylindrical wall 18.
The top plate 7 and the cylindrical thick plate liner 19 are joined at a joint portion 20 by welding a backing metal T-joint (not shown) or a double-sided groove joint. The top slab 14
On the cylindrical wall 18, reinforcing bar reinforcement and concrete pouring (not shown) are carried out (claim 3).

R by the top slab 14 and the cylindrical wall 18
As the construction method of CCV1, first, the cylindrical liner 8 and the cylindrical thick plate liner 19 as well as the cylindrical liner anchor 9 are manufactured in an integrated structure by a factory or on-site assembly, and are carried into the site to carry out some reinforcing bar reinforcement and concrete. The cylindrical wall 18 including construction work is constructed.

The sheer lug 15 or the sheer lug 17 is separately manufactured in a factory or on-site assembly in accordance with the manufacturing dimension of the cylindrical liner 8 to which the cylindrical liner anchor 9 is attached.
The top plate 7 provided with is cut, and the top plate 7 and the top slab liner 10 are welded at the joint portion 12,
The top slab 14 is formed into an integral structure.

Next, the top slab 14 is mounted on the previously constructed cylindrical wall 18, and the top plate 7 and the cylindrical thick plate liner 19 are joined together at the joint 20 to form a backing metal T-joint or a double-sided groove. After joining by welding a joint or the like, RCCV1 is constructed by placing concrete and reinforcing bars including the rest of the cylindrical wall 18 (claim 4).

Next, the operation of the above structure and construction method will be described. The H-shaped steel shear lug 15 provided on the upper surface of the top plate 7 or the shear lug 17 installed on the outer peripheral edge of the top plate 7 joins the top slab liner 10 and the top plate 7 at the time of factory production or field assembly, and the top plate. Since it is possible to obtain an effect of preventing deformation due to heat input due to welding at the time of joining the thick plate liner 19 and the cylindrical thick plate liner 7, it is easy to ensure manufacturing accuracy.

Further, the top slab liner 10 and the top plate 7 etc., which are cut to the dimensions with the cylinder liner 8 etc. on the cylinder wall 18 at the time of factory or field assembly,
The top slab 14 having an integral structure is mounted on the cylindrical wall 18.
From this, the work of aligning the dimensions of the top slab liner 10 and the top plate 7 which was conventionally performed at the beginning of assembly,
Also, since the cutting work performed by lowering the top slab liner 10 to the ground is unnecessary, the lifting work by the crane or the like is not required again, and the work amount on site and the construction process can be shortened.

The fourth embodiment relates to claim 5 and claim 6, and as shown in the enlarged vertical sectional view of the essential part of FIG.
In the top slab 14 that builds 1, the top slab liner 10 with the top slab part liner anchor 11 attached
And the above-mentioned first part arranged so as to surround the outer periphery on its upper surface.
The cylindrical thick plate liner 19 is attached to the top plate 7 provided with the shear lug 15 of the embodiment or the shear lug 17 of the second embodiment to form an integral structure.

As for the cylindrical wall 21, the cylindrical liner anchor 9 is attached to the cylindrical liner 8, the top slab 14 is mounted on the cylindrical wall 21, and the cylindrical thick plate liner 19 and the cylindrical liner are provided. 8 are joined at the joint portion 22 by welding a backing metal joint (not shown) or a double-sided groove joint. The top slab 14 and the cylindrical wall
Reinforcing bar reinforcement and concrete pouring (not shown) are performed on 21 (Claim 5).

R by the top slab 14 and the cylindrical wall 21
As a construction method of CCV1, first, a cylindrical liner 8 and a cylindrical liner anchor 9 are manufactured in an integrated structure by a factory or on-site assembly, and then carried into the site and a part of the reinforcing bar reinforcement and concrete placing work are included. Build the wall 21.

The shear lug 15 or the shear lug 17 is separately manufactured by a factory or on-site assembly according to the manufacturing dimension of the cylindrical liner 8 to which the cylindrical liner anchor 9 is attached.
The top plate 7 provided with is cut, the thick plate liner 19 of the cylindrical portion is attached to the top plate 7, and the top slab liner 10 is welded at the joint portion 12 to form the top slab 14 having an integrated structure.

Next, the top slab 14 is mounted on the previously constructed cylindrical wall 21, and the thick plate liner 19 of the cylindrical portion and the liner 8 of the cylindrical portion are joined to each other at the joining portion 22 with the backing metal T-joint or both side openings. After joining by welding such as the tip joint, the cylindrical wall
RCCV1 is constructed by placing reinforcing bars including the rest of 21 and placing concrete (claim 6).

Next, the operation of the above structure and construction method will be described. Shear lug 15 on the top plate 7,
Providing 17 prevents deformation of the top plate 7 and the like due to heat input due to welding when joining the top slab liner 10 and the top plate 7 at the time of factory production or local assembly, so that it is easy to secure manufacturing accuracy. You can do it.

By mounting the top plate 7 having the cylindrical thick plate liner 19 as the top slab 14 and the top slab liner 10 mounted on the cylindrical wall 21 as an integral structure, the dimensions of the top slab liner 10 and the top plate 7 can be adjusted. The work and the cutting work performed by unloading the top slab liner 10 to the ground again are not necessary. Therefore, the lifting work by the crane is reduced, and the work amount on site and the construction process can be shortened.

The fifth embodiment relates to claim 7 and claim 8, and as shown in the enlarged longitudinal sectional view of the main part of FIG. 5, the top slab 23 has a structure in which the top slab part liner anchor 11 and the top slab liner 10 are integrated. Is configured as.

Further, the cylindrical wall 18 has a cylindrical liner anchor 9, a cylindrical liner 8 and a cylindrical thick plate liner 19 as an integrated structure, and the top slab 23 is mounted on the cylindrical wall 18 and the top slab liner 10 and Cylindrical thick plate liner 19
At a joint 24 by welding a backing metal joint (not shown) or a double-sided groove joint. In addition,
The top slab 23 and the cylindrical wall 18 are subjected to reinforcing bar reinforcement and concrete pouring (not shown).

R by the top slab 23 and the cylindrical wall 18
As a construction method of the CCV 1, the cylindrical liner 8 and the cylindrical liner anchor 9 to which the cylindrical thick plate liner 19 is attached at the factory are used.
Is manufactured as an integral structure, and the cylindrical wall 18 including some reinforcing bar reinforcement and concrete placing work is constructed on site. According to the manufacturing dimension of the cylindrical liner 8 with the cylindrical liner anchor 9 attached, separately by factory or on-site assembly,
The top slab liner 10 is cut to form a top slab front integrally with the top slab liner anchor 11.

Next, the top slab 23 is mounted on the previously constructed cylindrical wall 18, and the thick plate liner 19 of the cylindrical portion and the top slab liner 10 are joined at the joint 24 at the backing metal T-joint or double-sided groove joint. After joining by welding, etc., RCCV1 is constructed by placing concrete and reinforcing bars including the rest of the cylindrical wall 18 (claim 8).

Next, the operation of the above structure and construction method will be described. Top Slab 23 Top Slab Liners
Since the shear lugs 15 and 17 are not provided in the 10, the structure of the top slab 23 is simplified and the top slab liner is also provided.
In 10, the joining work with the top plate 7 is unnecessary. As a result, the top slab liner 10 or the like is not deformed by welding for joining, the manufacturing accuracy is easily ensured, and the same effect as that of the third embodiment is obtained.

The sixth embodiment relates to claims 9 and 10 and, as shown in the enlarged vertical sectional view of the main part of FIG. 6, the top slab 23 includes a top slab part liner anchor 11, a top slab liner 10 and a cylindrical part. The thick plate liner 19 is constructed as an integral structure. Further, the cylindrical wall 21 is configured by integrally forming the cylindrical liner anchor 9 and the cylindrical liner 8, the top slab 23 is mounted on the cylindrical wall 21, and the top slab liner 10 and the cylindrical thick plate liner 19 are joined to each other 22 In, a backing metal joint (not shown) or a double-sided groove joint is joined by welding.

The top slab 23 and the cylindrical wall 21 are provided with reinforcing bars and concrete pouring (not shown) (claim 9). As a method of constructing the RCCV 1 with the top slab 23 and the cylindrical wall 18, the cylindrical liner 8 and the cylindrical liner anchor 9 are manufactured in an integrated structure at a factory, and a part of the reinforcing bar reinforcement and concrete placing work is performed on site. The included cylindrical wall 21 is constructed.

The top slab liner 10 is cut according to the manufacturing dimensions of the cylinder liner 8 to which the cylinder liner anchor 9 is attached by a separate factory or on-site assembly, and together with the cylinder thick plate liner 19 and the top slab liner anchor 11. , The top slab 23 is formed into an integral structure.

Next, the top slab 23 is mounted on the previously constructed cylindrical wall 21, and the thick plate liner 19 of the cylindrical portion and the liner 8 of the cylindrical portion are joined at the joint portion 22 with a backing metal T-joint or open on both sides. After joining by welding such as the tip joint, the cylindrical wall
RCCV1 is constructed by placing concrete and reinforcing bars including the rest of 21 (claim 10).

As an operation of the above configuration and construction method, since the structure of the top slab 23 is simplified and the work of joining the top slab liner 10 to the top plate 7 is unnecessary, it is easy to secure the manufacturing accuracy. etc,
The same effect as the fourth embodiment can be obtained.

[0061]

As described above, according to the present invention, in the reinforced concrete reactor containment vessel, the manufacturability and the manufacturing accuracy of the top plate of the top slab and the like are improved, and the deformation due to the heat input due to welding at the time of joining occurs. It can be prevented. Further, there is an effect that the work of assembling the top slab and the cylindrical wall and the joint between them are simplified, and the amount of work on site and the work process are reduced.

[Brief description of drawings]

FIG. 1 is an enlarged vertical sectional view of an essential part of an RCCV according to a first embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of an essential part of an RCCV according to a second embodiment of the present invention.

FIG. 3 is an enlarged vertical sectional view of an essential part of an RCCV according to a third embodiment of the present invention.

FIG. 4 is an enlarged vertical sectional view of an essential part of an RCCV according to a fourth embodiment of the present invention.

FIG. 5 is an enlarged vertical sectional view of an essential part of an RCCV according to a fifth embodiment of the present invention.

FIG. 6 is an enlarged vertical sectional view of an essential part of an RCCV according to a sixth embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view of RCCV.

FIG. 8 is an enlarged vertical sectional view of a main part of a conventional RCCV.

FIG. 9 is an enlarged plan view of a main part of a conventional RCCV.

[Explanation of symbols]

1 ... RCCV (reinforced concrete reactor containment vessel),
2, 14, 16, 23 ... Top slab, 3, 18, 21 ... Cylindrical wall,
4 ... Base mat, 5 ... Reactor pressure vessel, 6, 15, 17 ...
Shear rug, 7 ... Top plate, 8 ... Cylindrical liner, 9
… Cylindrical liner anchor, 10… Top slab liner, 11…
Top slab liner anchor, 12 ... Joint between top slab liner and top plate, 13 ... Embedded material, 19 ... Cylindrical thick plate liner, 20 ... Joining between top plate and cylindrical thick plate liner, 22 ... Cylindrical part Joint between thick plate liner and cylindrical liner, 24 ... Joint between top slab liner and cylindrical thick plate liner.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 62-165185 (JP, A) JP 8-194084 (JP, A) JP 63-252293 (JP, A) JP 1- 110293 (JP, A) JP-A-1-206291 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G21C 13/00 G21C 13/024

Claims (10)

(57) [Claims] 1. In a reinforced concrete reactor containment vessel, a shear lug having an H-shaped longitudinal section is formed on the upper surface of the top plate of the top slab , and one of the side surfaces of the H-shaped shear lug is provided.
Are placed so that they face downward, and the surface that faces
A reactor containment vessel made of reinforced concrete, which is provided so as to be in contact with the upper surface of the plate . 2. In a reinforced concrete reactor containment vessel, the cylindrical liner anchor and the cylindrical liner have an integral structure.
Then, at the upper end of the cylindrical wall where the reinforcing bar reinforcement and concrete are placed.
The Shiaragu by flat bar provided on the outer circumferential edge portion of the joined top plate, the top plate and the top slab
A reinforced concrete reactor containment vessel characterized by being welded to the top slab liner . 3. In a reinforced concrete reactor containment vessel, a cylindrical liner anchor, a cylindrical liner, and this cylindrical part.
Cylindrical thick plate liner provided on the upper end of the inner wall of the liner is an integral structure for the reinforcement and concrete placement of the cylindrical wall, and the top plate, top slab liner and top slab liner anchor are the integral structure for reinforcement reinforcement and concrete. The top slab to be cast is joined by welding a backing metal T-joint or a double-sided groove joint at a joint between the cylindrical thick plate liner and the top plate. Reinforced concrete reactor containment vessel described. 4. In a reinforced concrete reactor containment vessel, a cylindrical liner anchor, a cylindrical liner, and this cylindrical part.
The top plate and top slab liner and top slab liner anchors as top slabs are placed on the cylindrical wall constructed by partially reinforced bar arrangement and concrete placement as an integrated structure of the cylindrical thick plate liner provided on the upper end of the inner wall of the liner. After mounting as an integral structure, the thick plate liner of the cylindrical wall and the top plate of the top slab are joined by welding with a backing metal T-joint or double-sided groove joint, and at the same time, reinforcing bar reinforcement and concrete placement The method for constructing a reinforced concrete reactor containment vessel according to claim 3, wherein 5. In a reinforced concrete reactor containment vessel, a cylindrical wall liner anchor and a cylindrical liner are integrally formed into a cylindrical wall for reinforcing bar reinforcement and concrete placement, a cylindrical plate thick liner and top plate, and a top slab liner and top. A slab liner anchor is integrated into a top slab for reinforcing bar reinforcement and concrete placement by welding with a backing metal T-joint or double-sided groove joint at the joint between the cylindrical liner and the cylindrical thick plate liner. The reinforced concrete reactor containment vessel according to claim 1 or 2, characterized in that. 6. In a reinforced concrete reactor containment vessel, a cylindrical section liner anchor and a cylindrical section liner are integrally formed on a cylindrical wall constructed by reinforcing bar reinforcement and concrete placement, and a cylindrical section thick plate liner as a top slab. After mounting the top plate, the top slab liner, and the top slab liner anchor as an integrated structure, the cylinder wall liner of the cylinder wall and the cylinder plate slab of the top slab are backed with a metal T-joint or a double-sided groove joint. The method for constructing a reinforced concrete reactor containment vessel according to claim 5, characterized in that the reinforcement is reinforced and the concrete is placed together by welding. 7. In a reinforced concrete reactor containment vessel, a cylindrical liner anchor, a cylindrical liner, and this cylindrical part.
Cylindrical thick plate liner provided at the upper end of the inner wall of the liner is an integral structure for reinforcing bar reinforcement and concrete placement, and the top slab liner and top slab liner anchor are integrated structure for reinforcement reinforcement and concrete placement. A reinforced concrete reactor containment vessel, wherein the top slab is joined by welding a backing metal T-joint or a double-sided groove joint at the joint between the cylindrical thick plate liner and the top slab liner. 8. In a reinforced concrete reactor containment vessel, a cylindrical liner anchor, a cylindrical liner, and this cylindrical part.
As a top slab top slab liner and top slab part liner anchor as an integrated structure on a cylindrical wall constructed by partially reinforcing bar reinforcement and concrete placement as an integrated structure with a cylindrical thick plate liner provided at the upper end of the inner wall of the liner After mounting, the top slab liner and the cylindrical thick plate liner are backed and joined by welding such as a metal T-joint or a double-sided groove joint, and reinforcing bar reinforcement and concrete placement are performed. Construction method of reinforced concrete reactor containment vessel. 9. In a reinforced concrete reactor containment vessel, a cylindrical wall liner anchor and a cylindrical wall are integrated to form a cylindrical wall for reinforcing bar reinforcement and concrete placement, a cylindrical plate thick liner, a top slab liner and a top slab liner anchor. A top slab for reinforcing steel reinforcement and concrete placement as an integrated structure is provided at the joint between the thick plate liner for the cylindrical portion and the thick plate liner for the cylindrical portion attached to the top slab, such as a backing metal T-joint or a double-sided groove joint. A reinforced concrete reactor containment vessel characterized by being joined by welding. 10. In a reinforced concrete reactor containment vessel, a cylindrical section liner anchor and a cylindrical section liner are integrally formed on a cylindrical wall constructed by reinforcing bar reinforcement and concrete placing, and a cylindrical section thick plate liner as a top slab. After mounting the top slab liner and top slab liner anchor as an integral structure, the cylindrical liner and the cylindrical thick plate liner are joined by welding with a backing metal T-joint or double-sided groove joint, etc. The method for constructing a reinforced concrete reactor containment vessel according to claim 9, wherein the construction is performed.