CN220889537U - Construction jig frame for assembling ribbed hemispherical shell of nuclear power plant - Google Patents

Abstract

The utility model discloses a construction jig frame for assembling a ribbed hemispherical shell of a nuclear power plant, which comprises a foundation, a main structure and an auxiliary structure, wherein the foundation is provided with a central embedded part and an outer ring embedded part; the main structure comprises a central lattice column, a cylindrical platform and a plurality of arc trusses, wherein the central lattice column is arranged at the upper end of the central embedded part, the cylindrical platform is arranged at the upper end of the central lattice column, and the arc trusses are arranged at the outer ring of the central lattice column; the auxiliary structure comprises a plurality of operation platforms arranged between the arc truss and the shell, each operation platform comprises a plurality of annular hanging frames and a pavement steel springboard, each annular hanging frame comprises a connecting frame which is arranged in an extending mode along the up-down direction, a platform cross rod which is arranged in the middle of the connecting frame and is arranged in an extending mode along the direction towards the shell, and an adjusting piece which is arranged on the lower side of the platform cross rod, one end of the adjusting piece is connected with the lower end of the connecting frame, the other end of the adjusting piece is connected with one end, close to the shell, of the platform cross rod, and the length of the adjusting piece is adjustable; the high-integration jig frame operating system for realizing 'zero scaffold' construction and installation integration is high in construction flexibility.

Description

Construction jig frame for assembling ribbed hemispherical shell of nuclear power plant

Technical Field

The utility model relates to the technical field of construction of steel structure engineering of nuclear power plants, in particular to a construction jig frame for assembling ribbed hemispherical shells of a nuclear power plant.

Background

The ribbed hemispherical shell of the nuclear power plant has a hemispherical end socket structure, a workshop is prefabricated in blocks, a special jig frame is required to be used for assembling, and then the shell is supported for pipeline installation. The traditional ribbed hemispherical shell spliced scaffold adopts a full scaffold, so that the workload is large, the bearing capacity is weak, the overall stability is poor, an operation point cannot be fully covered, an operation platform used in the installation process cannot be flexibly adjusted, a supporting system is inconvenient to adjust, and the construction efficiency is low.

Disclosure of utility model

The utility model mainly aims to provide a construction jig frame for assembling ribbed hemispherical shells of a nuclear power plant, and aims to solve the problems.

In order to achieve the above purpose, the utility model provides a construction jig frame for assembling a ribbed hemispherical shell of a nuclear power plant, which comprises:

The foundation is provided with a central embedded part positioned in the middle and an outer ring embedded part arranged on the periphery of the central embedded part;

The main structure comprises a central lattice column, a cylindrical platform and a plurality of arc trusses, wherein the central lattice column is arranged at the upper end of the central embedded part, the cylindrical platform is arranged at the upper end of the central lattice column, the arc trusses are arranged on the outer ring of the central lattice column and are arranged at intervals along the periphery of the central lattice column, the top end of each arc truss is connected with the cylindrical platform, and the bottom end of each arc truss is connected with the outer ring embedded part; and

The auxiliary structure comprises a plurality of operation platforms arranged between the arc truss and the shell, wherein the operation platforms are arranged at intervals along the extending direction of the arc truss, each operation platform surrounds the periphery of the arc truss and comprises a plurality of annular hanging frames and a pavement steel springboard which are distributed at intervals along the circumference of the operation platform, each annular hanging frame comprises a connecting frame which extends along the up-down direction, a platform cross rod which is arranged in the middle of the connecting frame and extends along the direction of the shell, and an adjusting piece which is arranged at the lower side of the platform cross rod, one end of the adjusting piece is connected with the lower end of the connecting frame, the other end of the adjusting piece is connected with one end of the platform cross rod, which is close to the shell, the length of the adjusting piece is adjustable, so that the included angle between the platform cross rod and the connecting frame is adjusted, and the pavement steel springboard is arranged on the platform cross rod.

Optionally, the adjusting piece comprises a fixed sleeve and adjusting screws arranged at two ends of the fixed sleeve, the two adjusting screws are respectively in threaded connection with the fixed sleeve, and the external threads of the two adjusting screws are opposite in spiral direction;

One of the two adjusting screws is connected with the connecting frame, and the other adjusting screw is connected with the platform cross rod.

Optionally, the platform horizontal pole is close to the one end threaded connection of casing has the telescopic screw rod, just the telescopic screw rod is used for with the casing is connected.

Optionally, the link is close to one side of arc truss is equipped with two at least bounding walls, two the bounding wall sets up along upper and lower direction interval, each the bounding wall with the link forms an inverted U-shaped structure for rather than the transverse link joint of corresponding arc truss.

Optionally, each of the coamings comprises:

The first baffle plate extends from the connecting frame along the direction towards the arc truss; and

The second baffle plate is arranged at the lower side of the first baffle plate and is arranged at intervals with the connecting frame so as to form an inverted U-shaped structure with the first baffle plate and the connecting frame;

the second stop plate is inserted with at least one bolt along the direction facing the connecting frame, and a containing space is formed between the bolt and the first stop plate.

Optionally, one of the plurality of operation platforms located at the bottom layer is spaced from the ground, so that an access passage is formed between two adjacent arc trusses.

Optionally, the accessory structure further includes a plurality of man-in channels, one of the man-in channels is disposed between one of the operation platforms at the bottom layer and the ground, and the other man-in channels are disposed between two adjacent operation platforms.

Optionally, four central lattice columns are distributed at intervals along the circumferential direction of the shell, and any two adjacent central lattice columns are connected through a plurality of first connecting rods; and/or the number of the groups of groups,

Each arc truss comprises six truss units, the six truss units are distributed in sequence along the extending direction of the arc truss, and any two adjacent truss units are connected through a plurality of second connecting rods.

Optionally, a first fixed hinged support is arranged on the central embedded part, and the central lattice column is in bolt fastening connection with the first fixed hinged support; and/or the number of the groups of groups,

The outer ring embedded part is provided with a second fixed hinged support, and the arc truss is in bolt fastening connection with the second fixed hinged support.

Optionally, the central lattice column is flanged to the cylindrical platform.

According to the technical scheme, the construction jig frame assembled by the ribbed hemispherical shell of the nuclear power plant comprises a foundation, a main structure and an auxiliary structure, wherein the main structure comprises a central lattice column, a cylindrical platform and a plurality of arc trusses, the auxiliary structure comprises a plurality of operation platforms, each operation platform comprises a plurality of annular hanging frames and a pavement steel springboard, each annular hanging frame comprises a platform cross rod, an adjusting piece and a connecting frame, the platform cross rods, the adjusting pieces and the connecting frames form a stable triangular structure, stable support can be provided for the pavement steel springboard, the length of the adjusting pieces is adjustable, the included angle between the platform cross rods and the connecting frames is adjustable, and then the inclination of the pavement steel springboard arranged on the platform cross rods can be adjusted. Meanwhile, the design that the central lattice column supports the arc truss is adopted, so that the self weight of the shell and the construction work load can be effectively transmitted, the bearing capacity is high, the stability is good, the internal space of the construction jig frame assembled by the ribbed hemispherical shell of the nuclear power plant is wide, and the construction jig frame can be compatible with various equipment measures, such as walking of equipment such as high-altitude vehicles and lifting platforms; in addition, through set up center buries and outer lane buries between ground with the main structure, for the construction load provides effective transmission mode for the main structure has stable support, controllable subsidence improves the precision of assembling of casing.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a construction jig for assembling ribbed hemispherical shells of a nuclear power plant;

FIG. 2 is a schematic view of a portion of a construction jig assembled from ribbed hemispherical shells of the nuclear power plant of FIG. 1;

FIG. 3 is a schematic view of the center lattice column of the ribbed hemispherical shell assembled construction jig of the nuclear power plant of FIG. 1;

FIG. 4 is a schematic view of a cylindrical platform of the construction jig frame assembled by ribbed hemispherical shells of the nuclear power plant of FIG. 1;

FIG. 5 is a schematic view of the structure of an arc truss of a construction jig assembled by ribbed hemispherical shells of the nuclear power plant of FIG. 1;

FIG. 6 is an assembled schematic view of a portion of truss elements and a portion of the attachment structures in the assembled construction jig of the ribbed hemispherical shell of the nuclear power plant of FIG. 1;

FIG. 7 is a schematic view of the assembly of the truss unit and circumferential hanger of FIG. 6;

fig. 8 is a schematic view of the structure of the annular hanger in fig. 7.

Reference numerals illustrate:

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The ribbed hemispherical shell of the nuclear power plant has a hemispherical end socket structure, a workshop is prefabricated in blocks, a special jig frame is required to be used for assembling, and then the shell is supported for pipeline installation. The traditional ribbed hemispherical shell spliced scaffold adopts a full scaffold, so that the workload is large, the bearing capacity is weak, the overall stability is poor, an operation point cannot be fully covered, an operation platform used in the installation process cannot be flexibly adjusted, a supporting system is inconvenient to adjust, and the installation efficiency is low.

In view of this, the present utility model provides a construction jig 100 assembled by ribbed hemispherical shells of a nuclear power plant, and fig. 1 to 8 are schematic diagrams of an embodiment of a construction jig 100 assembled by ribbed hemispherical shells of a nuclear power plant provided by the present utility model.

Referring to fig. 1 to 8, the construction jig frame 100 for assembling ribbed hemispherical shells of nuclear power plants comprises a foundation, a main structure 1 and an auxiliary structure 2, wherein the foundation is provided with a central embedded part positioned in the middle and an outer ring embedded part positioned at the periphery of the central embedded part; the main structure 1 comprises a central lattice column 11, a cylindrical platform 12 and a plurality of arc trusses 13, wherein the central lattice column 11 is arranged at the upper end of the central embedded part, the cylindrical platform 12 is arranged at the upper end of the central lattice column 11, the arc trusses 13 are arranged at the outer ring of the central lattice column 11 and are arranged at intervals along the periphery of the central lattice column 11, the top end of each arc truss 13 is connected with the cylindrical platform 12, and the bottom end of each arc truss 13 is connected with the outer ring embedded part; the auxiliary structure 2 comprises a plurality of operation platforms 21 arranged between the arc truss 13 and the shell, the operation platforms 21 are arranged at intervals along the extending direction of the arc truss 13, each operation platform 21 surrounds the periphery of the arc truss 13, each operation platform comprises a plurality of annular hanging frames 211 and a pavement steel springboard 22212 which are distributed at intervals along the circumferential direction of the operation platform, each annular hanging frame 211 comprises a connecting frame 2111 which extends along the up-down direction, a platform cross bar 2112 which is arranged in the middle of the connecting frame 2111 and extends along the direction towards the shell, and an adjusting piece 2113 which is arranged at the lower side of the platform cross bar 2112, one end of the adjusting piece 2113 is connected to the lower end of the connecting frame 2111, the other end of the adjusting piece 2112 is close to one end of the shell, the length of the adjusting piece 2113 is adjustable so as to adjust an included angle between the platform cross bar 2112 and the connecting frame 1, and the pavement steel springboard 22212 is arranged on the platform cross bar 2112.

In the technical solution of the present utility model, the construction jig 100 assembled by ribbed hemispherical shells of a nuclear power plant includes a foundation, a main structure 1 and an auxiliary structure 2, the main structure 1 includes a central lattice column 11, a cylindrical platform 12 and a plurality of arc trusses 13, the auxiliary structure 2 includes a plurality of operation platforms 21, each operation platform 21 includes a plurality of circumferential hangers 211 and a pavement steel springboard 22212, the circumferential hangers 211 include a platform cross bar 2112, an adjusting member 2113 and a connecting frame 2111, the platform cross bar 2112, the adjusting member 2113 and the connecting frame 2111 form a stable triangular structure, and can provide stable support for the pavement steel springboard 22212, and the length of the adjusting member 2113 is adjustable, so that the included angle between the platform cross bar 2112 and the connecting frame 2111 is adjustable, and the inclination of the pavement steel springboard 22212 disposed on the platform 2112 is further adjustable, that is, by adopting the main structure 1 of the platform cross bar 2112, the utility model, the integrated truss system of the utility model can realize high construction efficiency by matching with the adjustable operation jig 2113, and improve the integrated construction efficiency. Meanwhile, the design that the central lattice column 11 supports the arc truss 13 is adopted, so that the self weight of the shell and the construction work load can be effectively transmitted, the bearing capacity is high, the stability is good, the internal space of the construction jig frame 100 assembled by the ribbed hemispherical shell of the nuclear power plant is wide, and various equipment measures such as walking of equipment such as a high-altitude vehicle and a lifting platform can be compatible; in addition, through setting up center buries and outer lane buries between ground and the main structure 1, for the construction load provides effective transmission mode for main structure 1 has stable support, controllable subsidence improves the assembly precision of casing.

In an embodiment of the present utility model, the bearing layer of the foundation is old soil, and the foundation is a reinforced concrete raft foundation under a round post.

The components of the main structure 1 and the auxiliary structure 2 are formed by unitizing and modularization in a workshop, and can be prefabricated at the same time.

Further, referring to fig. 7 and 8, in an embodiment of the present utility model, the adjusting member 2113 includes a fixing sleeve 21131 and adjusting screws 21132 disposed at two ends of the fixing sleeve 21131, the two adjusting screws 21132 are respectively screwed with the fixing sleeve 21131, and the external threads of the two adjusting screws 21132 have opposite screw directions; one of the two adjusting screws 21132 is connected with the connecting frame 2111, and the other is connected with the platform cross bar 2112; in this way, the length of the adjusting member 2113 can be adjusted by rotating the fixing sleeve 21131, so that the requirement of adjusting the inclination of the pavement steel springboard 22212 is met, construction operation is flexibly performed, and scaffolds are completely abandoned.

In the present utility model, the annular hanger 211 covers the inner surface of the housing and contacts with the housing as a main stress conduction structure, and in order to adjust the inclination of the platform bar 2112 and ensure that the annular hanger 211 contacts with the housing, referring to fig. 7 and 8, in one embodiment of the present utility model, a telescopic screw 2114 is screwed to one end of the platform bar 2112 near the housing, and the telescopic screw 2114 is used for connecting with the housing; in this way, while adjusting the inclination of the platform cross bar 2112, the telescopic length of the telescopic screw 2114 can be adaptively adjusted by rotating the telescopic screw 2114, so that the telescopic screw 2114 can be connected with the housing, stable support is provided for the housing, the component mounting size of the housing can be flexibly adjusted, and the assembly precision is improved.

Specifically, referring to fig. 7 and 8, in an embodiment of the present utility model, at least two coamings 2115 are disposed on a side of the connecting frame 2111 adjacent to the arc truss 13, the two coamings 2115 are disposed at intervals along the up-down direction, and each coamings 2115 and the connecting frame 2111 form an inverted U-shaped structure for being clamped with the corresponding transverse link 1311 of the arc truss 13; thus, the connection between the annular hanging frame 211 and the arc truss 13 is realized, the inverted U-shaped structure is clamped into the transverse connecting rod 1311 from top to bottom in the concrete installation process, so that the stability of the annular hanging frame 211 can be ensured under the action of dead weight, and when local adjustment is needed, the annular hanging frame 211 and the transverse connecting rod 1311 can be separated only by manpower, so that the movement of the annular hanging frame 211 is realized, and the construction flexibility is improved.

Further, referring to fig. 7 and 8, in an embodiment of the present utility model, each of the surrounding plates 2115 includes a first stop plate 21151 and a second stop plate 21152, the first stop plate 21151 is extended from the connecting frame 2111 in a direction toward the arc truss 13, and the second stop plate 21152 is disposed at a lower side of the first stop plate 21151 and is spaced from the connecting frame 2111 to form the inverted U-shaped structure with the first stop plate 21151 and the connecting frame 2111; at least one bolt 21153 is inserted into the second stop plate 21152 along the direction facing the connecting frame 2111, and a receiving space is formed between the first stop plates 21151 by the bolt 21153; thus, when the transverse link 1311 is clamped into the accommodating space, the bolt 21153 has a limiting and supporting function on the transverse link 1311, so that the connection stability of the annular hanger 211 and the arc truss 13 is improved.

Specifically, referring to fig. 1, one of the operation platforms 21 located at the bottom layer of the plurality of operation platforms 21 is spaced from the ground, so that an access passage is formed between two adjacent arc trusses 13; the access passage can be used as an access port for personnel, small-sized tools, materials and the like, and is convenient for construction.

Further, the auxiliary structure 2 further includes a plurality of man-riding channels, one of the man-riding channels is disposed between one of the operation platforms 21 located at the bottom layer and the ground, and the other man-riding channel is disposed between two adjacent operation platforms 21; more specifically, the boarding passage is a ladder stand formed by section steel and used for being connected with the boarding operation platform 21, and further, a transverse support is arranged between the boarding passage and the operation platform 21, so that the bearing of the boarding passage is improved.

Specifically, referring to fig. 2 and 3, in an embodiment of the present utility model, four central lattice columns 11 are distributed at intervals along the circumferential direction of the shell, and any two adjacent central lattice columns 11 are connected by a plurality of first connecting rods, so that four central lattice members form a stable structure, and stability of the construction jig frame 100 assembled by the ribbed hemispherical shell of the nuclear power plant is improved.

Specifically, referring to fig. 5, in an embodiment of the present utility model, each arc truss 13 includes six truss units 131, the six truss units 131 are sequentially distributed along the extending direction of the arc truss 13, and any two adjacent truss units 131 are connected by a plurality of second connecting rods, so as to improve the stability of the construction jig frame 100 assembled by ribbed hemispherical shells of the nuclear power plant.

It should be noted that the above two technical features may be alternatively or simultaneously provided, and specifically, in an embodiment of the present utility model, the above two technical features are simultaneously provided, that is, four central lattice columns 11 are distributed at intervals along a circumferential direction of the housing, and any two adjacent central lattice columns 11 are connected by a plurality of first links, and each arc truss 13 includes six truss units 131, where six truss units 131 are sequentially distributed along an extension direction of the arc truss 13, and any two adjacent truss units 131 are connected by a plurality of second links; thus, the stability of the construction jig 100 assembled by the ribbed hemispherical shell of the nuclear power plant is greatly improved, and the assembling efficiency is improved.

Further, the first connecting rod is connected with the bolt 21153 of the central lattice column 11, and the second connecting rod is connected with the bolt 21153 of the truss unit 131, so that not only can the assembly efficiency be improved, but also the self structure can not be damaged when the construction jig 100 assembled by the ribbed hemispherical shell of the nuclear power plant is disassembled, and the construction jig is used for reassembling by replacing the bolt 21153 when the next shell is assembled.

Further, sixteen of the center burial pieces are provided.

Further, in an embodiment of the present utility model, sixteen arc trusses 13 are provided, and 64 corresponding outer ring embedded members are provided.

Specifically, a first fixed hinged support is arranged on the central embedded part, and the central lattice column 11 is tightly connected with the first fixed hinged support bolt 21153; therefore, the assembling efficiency of the construction jig frame 100 assembled by the ribbed hemispherical shell of the nuclear power plant is improved, the subsequent disassembly is convenient, and the workload is reduced.

Specifically, a second fixed hinged support is arranged on the outer ring embedded part, and the arc truss 13 is tightly connected with the second fixed hinged support bolt 21153; therefore, the assembling efficiency of the construction jig frame 100 assembled by the ribbed hemispherical shell of the nuclear power plant is improved, the subsequent disassembly is convenient, and the workload is reduced.

It should be noted that the above two technical features may be alternatively set or simultaneously set, and specifically, in an embodiment of the present utility model, the above two technical features are set simultaneously, that is, a first stationary hinge support is disposed on the central embedded part, the central lattice column 11 is tightly connected with the first stationary hinge support bolt 21153, and a second stationary hinge support is disposed on the outer ring embedded part, and the arc truss 13 is tightly connected with the second stationary hinge support bolt 21153; the integral assembly efficiency of the construction jig frame 100 assembled by the ribbed hemispherical shell of the nuclear power plant is improved, the subsequent disassembly is convenient, and the workload is reduced.

Specifically, the central lattice column 11 is in flange connection with the cylindrical platform 12, so that connection stability is ensured.

The application also provides a construction method which is applied to the construction of the construction jig frame for assembling the ribbed hemispherical shell of the nuclear power plant, and the construction method comprises the following steps:

Step S100, embedding a central embedded part and an outer ring embedded part on the raft foundation of the foundation;

In one embodiment, the ribbed hemispherical shell of the nuclear power plant has a structural shape of a hemispherical head, an inner diameter of 46800mm, an inner height of 23400mm and a weight of about 360 tons. Further, the step S100, in which the central embedded part and the outer ring embedded part are embedded on the raft foundation of the foundation, specifically includes:

step S110, embedding 16 central embedded parts in the middle of a raft foundation of the foundation;

Step S120, burying outer ring burying pieces Zhou Yumai and outer ring burying pieces of the central burying piece;

Before step S100, paying-off operation of the positions of the central embedded part and the outer ring embedded part is performed, and the central angle line and the radius line of each embedded part are paid out, so that the elevation is flush with the elevation of the foundation top.

After step S100, that is, after the central embedded part and the outer ring embedded part are installed, the elevation and the position are retested, and if the deviation is too large, the top of the embedded part can be leveled by adding a backing plate.

Step 200, installing a central lattice column corresponding to the central embedded part;

Further, the step S200 of installing a central lattice column corresponding to the central embedded part specifically includes:

Step S210, installing a first fixed hinge support on the central embedded part;

Step S220, installing the central lattice column on the first stationary hinge support;

The first fixed hinge support is used for connecting the central embedded part and the central grid member, so that the installation stability is improved.

Further, in this embodiment, 4 central lattice columns are installed corresponding to the central embedded part, the total length of each central lattice column is 20.53m, the central lattice columns are divided into an upper unit and a lower unit, after the modular processing and preparation in the workshop are completed, the upper unit and the lower unit are transported to the site for assembly, the length of the lower unit and the length of the upper unit of each central lattice column are 10.864m, and the length of the upper unit are 9.666m, specifically, the step S220 of installing the central lattice column on the first stationary hinge support specifically includes:

step S221, mounting a lower section unit of the central lattice column on the first stationary hinge support;

And step S222, using a crane to bolt the upper section unit of the central lattice column to the upper end of the lower section unit.

Further, after the step S222, the mounting the center lattice column on the first stationary hinge support further includes:

and S223, adopting a high-altitude vehicle to connect any two adjacent central lattice columns in the four central lattice columns by adopting a plurality of first connecting rods.

And the overall installation stability of the four central lattice columns is improved through the connection of the first connecting rods.

Step S300, installing a cylindrical platform at the upper end of the central lattice column;

Further, the step S300 of installing a cylindrical platform on the upper end of the central lattice column specifically includes:

Step S310, hoisting the cylindrical platform to the upper end of the central lattice column by adopting a crane;

step S320, the cylindrical platform is connected with the central lattice column through a flange;

The middle point of the flange arranged on the cylindrical platform and the middle point of the flange arranged on the central lattice column are on the same horizontal line, and the connection place of the middle points of the two flanges needs to ensure the 90-degree vertical.

In addition, after the central lattice column is installed corresponding to the central embedded part in the step S200 and before the cylindrical platform is installed at the upper end of the central lattice column in the step S300, the verticality and the levelness of the installed central lattice column are measured, and after the relevant requirements are met, the cylindrical platform is installed.

And S400, installing an arc truss corresponding to the outer ring embedded part and the cylindrical platform, and installing an operation platform around the arc truss.

It should be noted that, in this embodiment, sixteen arc trusses are provided according to design requirements.

Further, the step S400 of installing the arc truss corresponding to the outer ring embedded member and the cylindrical platform specifically includes:

Step S410, dividing the arc truss into six truss units along the extending direction according to the design requirement;

Step S420, assembling two truss units in the six truss units;

It should be noted that each truss unit is prepared in a modularized manner in a workshop, and two truss units are connected through bolts.

In a specific embodiment, two truss units of each of sixteen arc trusses are assembled.

Step S430, mounting a second fixed hinge support on the outer ring embedded part;

It should be noted that the order of the steps S420 and 430 is not limited, and more specifically, the assembly of the two truss units may be completed in advance in a workshop and then transported to a site for installation.

And S440, mounting the assembled two truss units on the second fixed hinge support by adopting an automobile crane.

In a specific embodiment, two truss units of sixteen arc trusses are sequentially installed by adopting an automobile crane, and truss units of two arc trusses which are sequentially adjacent along the circumferential direction are connected through a connecting rod, so that the connection stability of the sixteen arc trusses is improved.

S450, installing an operation platform around the two assembled truss units;

Further, the step S450, installing the operation platform around the two assembled truss units specifically includes:

Step S451, installing a man-in-the-ground channel, and installing an operation platform around the truss units positioned at the bottom layer in the two truss units;

Step S452, installing a man-in-the-way on the operation platform, installing the operation platform around the truss units positioned on the top layer in the two truss units, and connecting the two operation platforms through the man-in-the-way;

Further, in step S451, a man-in-the-road is installed on the ground, and the installing the operation platform around the truss unit located at the bottom layer of the two truss units specifically includes:

step S4511, installing a man-in-the-road on the ground;

step S4512, clamping an inverted U-shaped structure of the annular hanger on the periphery of a transverse connecting rod of the truss unit positioned at the bottom layer in the two truss units;

in this step, the assembly of the circumferential hanger and the truss unit may be manually completed, as well as the subsequent disassembly.

And step S4513, after a plurality of annular hangers are clamped on the periphery of the truss unit, overlapping the pavement steel springboard on the platform cross rod of the annular hanger.

Step S460, connecting other four truss units at the upper ends of the two truss units, and connecting the other four truss units with the cylindrical platform;

In a specific embodiment, two truss units of each of the sixteen arc trusses are connected to the other four truss units and the other four truss units of each arc truss are connected to the cylindrical platform. In addition, the other four truss units of any two adjacent arc trusses along the circumferential direction are connected through connecting rods.

Step S470, installing an operation platform around the other four truss units.

In this step, the installation steps of the operation platform are the same as those of the operation platform in step S450, and are not described in detail herein.

In the utility model, zero crossing of the construction jig frame is realized in the construction process of the construction jig frame assembled by the ribbed hemispherical shell of the nuclear power plant, each component of the construction jig frame assembled by the ribbed hemispherical shell of the nuclear power plant is made in a modularized mode, and is assembled and hoisted in a unitized mode, and an automobile crane is used in the whole construction process, so that the occupation of tower crane resources is avoided. In addition, the construction jig frame assembled by the ribbed hemispherical shell of the nuclear power plant can be installed layer by layer along with the progress of engineering, the lower-layer installation is not affected, and the load change in the process of assembling the dome layer by layer is met; when the dome assembly construction approaches to tail sound, installation work such as a spraying system and a pipeline can be inserted in advance to carry out preparation work, installation and assembly relay type connection are realized, and the construction period is greatly saved.

The construction jig frame assembled by the ribbed hemispherical shell of the nuclear power plant has a firm and reliable overall structure, can resist typhoons in 50 years and foundation settlement, and ensures that each dome lining member is reliably supported after being in place; in addition, the inner space of the construction jig frame assembled by the ribbed hemispherical shell of the nuclear power plant is large, equipment such as a high-altitude vehicle and a lifting platform can walk conveniently, the upper and lower channels are all around through the arrangement of the access channel and the man-in channel, the anchor part position, the welding seam paint repairing, the integral finishing paint construction point, the pipeline installation operation point and other construction operation points are fully covered, and the positioning and observation full-through measurement and inspection are free from obstruction.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A construction jig frame that nuclear power plant ribbed hemisphere casing was assembled, characterized in that includes:

The foundation is provided with a central embedded part positioned in the middle and an outer ring embedded part arranged on the periphery of the central embedded part;

The main structure comprises a central lattice column, a cylindrical platform and a plurality of arc trusses, wherein the central lattice column is arranged at the upper end of the central embedded part, the cylindrical platform is arranged at the upper end of the central lattice column, the arc trusses are arranged on the outer ring of the central lattice column and are arranged at intervals along the periphery of the central lattice column, the top end of each arc truss is connected with the cylindrical platform, and the bottom end of each arc truss is connected with the outer ring embedded part; and

The auxiliary structure comprises a plurality of operation platforms arranged between the arc truss and the shell, wherein the operation platforms are arranged at intervals along the extending direction of the arc truss, each operation platform surrounds the periphery of the arc truss and comprises a plurality of annular hanging frames and a pavement steel springboard which are distributed at intervals along the circumference of the operation platform, each annular hanging frame comprises a connecting frame which extends along the up-down direction, a platform cross rod which is arranged in the middle of the connecting frame and extends along the direction of the shell, and an adjusting piece which is arranged at the lower side of the platform cross rod, one end of the adjusting piece is connected with the lower end of the connecting frame, the other end of the adjusting piece is connected with one end of the platform cross rod, which is close to the shell, the length of the adjusting piece is adjustable, so that the included angle between the platform cross rod and the connecting frame is adjusted, and the pavement steel springboard is arranged on the platform cross rod.

2. The construction jig frame for assembling the ribbed hemispherical shell of the nuclear power plant according to claim 1, wherein the adjusting piece comprises a fixed sleeve and adjusting screws arranged at two ends of the fixed sleeve, the two adjusting screws are respectively in threaded connection with the fixed sleeve, and the external threads of the two adjusting screws are in opposite spiral directions;

One of the two adjusting screws is connected with the connecting frame, and the other adjusting screw is connected with the platform cross rod.

3. The construction jig frame for assembling ribbed hemispherical shells of nuclear power plants according to claim 1, wherein one end of the platform cross rod, which is close to the shells, is connected with a telescopic screw in a threaded manner, and the telescopic screw is used for being connected with the shells.

4. The construction jig frame for assembling ribbed hemispherical shells of nuclear power plants according to claim 1, wherein at least two coamings are arranged on one side, close to the arc-shaped truss, of the connecting frame, the two coamings are arranged at intervals in the up-down direction, and each coamings and the connecting frame form an inverted U-shaped structure for being clamped with a corresponding transverse connecting rod of the arc-shaped truss.

5. The nuclear power plant ribbed hemispherical shell assembled construction jig of claim 4, wherein each of said coamings comprises:

The first baffle plate extends from the connecting frame along the direction towards the arc truss; and

The second baffle plate is arranged at the lower side of the first baffle plate and is arranged at intervals with the connecting frame so as to form an inverted U-shaped structure with the first baffle plate and the connecting frame;

The second stop plate is inserted with at least one bolt along the direction facing the connecting frame, and a containing space is formed between the bolt and the first stop plate.

6. The construction jig frame for assembling ribbed hemispherical shells of nuclear power plants according to claim 1, wherein one of the plurality of operating platforms located at the bottom layer is spaced from the ground so as to form an access passage between two adjacent arc trusses.

7. The construction jig frame for assembling ribbed hemispherical shells of nuclear power plants according to claim 6, wherein said auxiliary structure further comprises a plurality of man-in-the-air passages, one of said man-in-the-air passages being provided between one of said operation platforms at the bottom layer and the ground, and the other man-in-the-air passages being provided between two adjacent ones of said operation platforms.

8. The construction jig frame assembled by ribbed hemispherical shells of a nuclear power plant according to claim 1, wherein four central lattice columns are distributed at intervals along the circumferential direction of the shells, and any two adjacent central lattice columns are connected through a plurality of first connecting rods; and/or the number of the groups of groups,

Each arc truss comprises six truss units, the six truss units are distributed in sequence along the extending direction of the arc truss, and any two adjacent truss units are connected through a plurality of second connecting rods.

9. The construction jig frame for assembling the ribbed hemispherical shell of the nuclear power plant according to claim 1, wherein a first fixed hinged support is arranged on the central embedded part, and the central lattice column is in bolt fastening connection with the first fixed hinged support; and/or the number of the groups of groups,

The outer ring embedded part is provided with a second fixed hinged support, and the arc truss is in bolt fastening connection with the second fixed hinged support.

10. The construction jig of claim 1, wherein the central lattice column is flanged to the cylindrical platform.