Nuclear power station containment building integrated platform system and mounting, dismounting and construction method

Abstract

The invention discloses an integrated platform system for building a nuclear power station containment vessel and a mounting, dismounting and construction method. The integrated platform system comprises a construction platform, a wall-attached supporting device, a hanger device and a hydraulic climbing system, the construction platform is annularly arranged at the top of the nuclear power plant containment to be constructed; an inner wall-attached supporting assembly and an outer wall-attached supporting assembly of the wall-attached supporting device each comprise a plurality of wall-attached supports, a plurality of load-bearing triangular supports and a bottom ring beam, wherein the wall-attached supports are annularly embedded in the two sides of an outer shell at intervals, the load-bearing triangular supports are detachably connected to the wall-attached supports correspondingly, and the bottom ring beam is annularly arranged and connected to the tops of the load-bearing triangular supports. The supporting stand columns are detachably connected to the tops of the bearing tripods respectively; the hanging rack device comprises an outer hanging rack vertically arranged on the outer side of the outer shell and an inner hanging rack vertically arranged between the inner shell and the outer shell; the two ends of a double-acting hydraulic cylinder of a power system in the hydraulic climbing system are connected with the two climbing falling protectors respectively, and the climbing falling protector located on the top is connected to a bearing tripod.

Description

Technical Field

[0001] This invention relates to the field of nuclear power plant containment construction technology, and in particular to an integrated platform system for nuclear power plant containment construction and its installation, dismantling, and construction methods. Background Technology

[0002] The containment vessel of a nuclear power plant is a unique reinforced concrete double-shell structure with a narrow space between the inner and outer shells. Concrete pouring for the containment vessel is typically carried out using scaffolding, with tower cranes used for lifting. This method is inefficient and compromises safety. While using an integrated platform for concrete pouring could significantly improve automation, the platform's complex structure and complicated installation and dismantling processes, along with the complex material transfer paths for reinforcing steel and embedded parts during concrete pouring, further reduce construction efficiency. Summary of the Invention

[0003] To address the problems of complex installation and dismantling operations of existing integrated platforms, and the complex material transfer paths for reinforcing bars and embedded parts during concrete pouring, which leads to reduced construction efficiency, the present invention aims to provide an integrated platform system for the construction of nuclear power plant containment structures, as well as its installation, dismantling, and construction methods.

[0004] The technical solution adopted by this invention to solve its technical problem is: an integrated platform system for the construction of a nuclear power plant containment structure, comprising: a construction platform, a wall-mounted support device, a hanging bracket device, and a hydraulic climbing system; the construction platform is circumferentially arranged on the top of the containment structure of the nuclear power plant to be constructed; the wall-mounted support device includes an outer ring wall-mounted support assembly disposed on the outside of the outer shell, and an inner ring wall-mounted support assembly disposed between the inner shell and the outer shell, both the inner ring wall-mounted support assembly and the outer ring wall-mounted support assembly including wall-mounted supports, load-bearing triangular frames, bottom ring beams, and supporting columns, and multiple wall-mounted supports are circumferentially and spaced apart and connected to the outer shell. On both sides of the body, multiple load-bearing triangular frames are detachably connected to corresponding wall supports. A bottom ring beam is circumferentially set on the top of multiple load-bearing triangular frames and is flush with the crossbeam of the load-bearing triangular frames. Multiple supporting columns are detachably connected to the top of the load-bearing triangular frames. The hanging device includes an outer hanging frame vertically set on the outside of the outer shell and an inner hanging frame vertically set between the inner shell and the outer shell. The hydraulic climbing system includes a climbing guide rail, two climbing fall arresters and a power system. The two ends of the double-acting hydraulic cylinder of the power system are connected to the two climbing fall arresters respectively. The climbing fall arrester located at the top is connected to the load-bearing triangular frame.

[0005] The present invention discloses an integrated platform system for the construction of a nuclear power plant containment structure, comprising a construction platform, a wall-mounted support device, a hanging bracket device, and a hydraulic climbing system. The construction platform is circumferentially positioned on top of the containment structure to be constructed. The inner and outer wall-mounted support components of the wall-mounted support device each include multiple wall-mounted supports circumferentially and spacedly embedded on both sides of the outer shell, multiple load-bearing triangular frames detachably connected to the wall-mounted supports, a bottom ring beam circumferentially positioned and connected to the top of the multiple load-bearing triangular frames, and support columns detachably connected to the top of the load-bearing triangular frames. The wall-mounted support device is used to support the entire integrated platform system during the construction phase and to transfer vertical and horizontal loads to the concrete structure of the nuclear power plant containment structure. The hanging bracket device includes an outer hanging bracket vertically positioned on the outside of the outer shell and an inner hanging bracket vertically positioned between the inner shell and the outer shell. In the hydraulic climbing system, the two ends of the double-acting hydraulic cylinder of the power system are respectively connected to two climbing fall arresters, and the climbing fall arrester located at the top is connected to the load-bearing triangular frame. The wall-mounted support device of this integrated platform system adopts a double-sided symmetrical arrangement, which provides more balanced stress distribution compared to the traditional single-sided arrangement. The integrated platform system has a lightweight structure, avoiding the drawbacks of excessive steel consumption caused by large cantilever structures. The bottom ring beam connects the inner and outer load-bearing triangular frames into a unified portal frame, enhancing the overall stability and anti-overturning capability of the structure. The bottom ring beam also redistributes some of the load from the inner and outer brackets and the construction platform, preventing excessive load concentration on a single load-bearing triangular frame or wall-mounted support, resulting in more even stress distribution. Multiple support columns connected to the top of the load-bearing triangular frames establish multiple robust support points, effectively transferring the load on the construction platform to the concrete structure. The bottom ring beam, load-bearing triangular frames, and support columns together form a stable spatial frame, effectively resisting water generated during construction. The system effectively mitigates the impact of flat loads, eccentric loads, and vibrations from operation, ensuring the construction platform remains stable and free from excessive swaying or deformation, thus providing a safe working surface for high-altitude work. Each component of the integrated platform system is modularly designed and divided according to its stress characteristics and functional requirements, taking into account modular standards, storage, transportation, installation, and dismantling specifications, creating a fully enclosed working environment. A side-top climbing process is employed, using double-acting hydraulic cylinders to drive the upper and lower fall-prevention climbing devices alternately, enabling the integrated platform system to perform climbing operations. The integrated platform system provides multiple working surfaces, functionally divided from top to bottom into a top platform layer, a construction operation layer, and an equipment operation layer. It features excellent enclosure, high load-bearing capacity, high construction efficiency, high safety, and strong structural adaptability, allowing for synchronous overall climbing, individual internal and external climbing, and segmented unit climbing.

[0006] Furthermore, the construction platform includes a steel platform frame, a cover plate laid on top of the steel platform frame, and a fence surrounding the outer side of the top of the steel platform frame. The steel platform frame is formed by connecting a circumferential main beam arranged around the outer side of the outer shell and a circumferential main beam arranged between the inner shell and the outer shell, multiple radial main beams and radial secondary beams arranged radially along the containment structure of the nuclear power plant, and an edge sealing beam arranged around the outer side of the radial main beams.

[0007] Furthermore, the load-bearing triangular frame is rested on the pin of the wall-mounted support by a suspension member set on the top side, and the adjustable support set on the bottom side of the load-bearing triangular frame is pressed against the wall surface of the outer shell.

[0008] Furthermore, the wall-mounted support device also includes a ring truss, which is circumferentially arranged outside the support columns of the outer ring wall-mounted support assembly, and the ring truss is bolted to the support columns located on both sides thereon.

[0009] Furthermore, it also includes a ring track crane, with a ring track beam installed on the ring main beam of the construction platform, and the traveling mechanism of the ring track crane is mounted on the ring track beam.

[0010] Furthermore, it also includes an opening and closing canopy device, which is set at the material channel opening of the construction platform. It includes a pair of rails installed on the crossbeams on both sides of the material channel of the construction platform, a canopy traveling mechanism erected on the pair of rails, a truss support connected to the canopy traveling mechanism, and a film canopy connected to the top of the truss support.

[0011] Furthermore, both the inner and outer hanging brackets of the hanging bracket device are divided into upper and lower sections. The upper section of the inner and outer hanging brackets is connected between the construction platform and the bottom ring beam, while the lower section of the inner and outer hanging brackets is suspended from the bottom of the bottom ring beam. A load-bearing flap is installed on the side of the inner and outer hanging brackets closest to the outer shell.

[0012] The present invention also provides an installation method for an integrated platform system for the construction of a nuclear power plant containment structure, comprising the following steps:

[0013] Step 1: Install pre-embedded bolts at the predetermined positions of the nuclear power plant containment vessel, connect the template connectors to the steel template panel with bolts, and after the steel template is closed and corrected, fix the pre-embedded bolts to the template connectors with fixing screws, pour the concrete of the current layer of the nuclear power plant containment vessel, and connect the wall support bolts to the pre-embedded bolts.

[0014] Step 2: Hoist the load-bearing triangular frame to the bottom of the wall-mounted support and place it in position. Place the bottom ring beam on top of multiple load-bearing triangular frames. Connect the bracket bolts at both ends of the bottom ring beam to the load-bearing triangular frames. Insert the climbing guide rail into the wall-mounted support from below. When the hook of the load-bearing triangular frame is close to the wall-mounted support, insert the load-bearing pin into the wall-mounted support to connect the load-bearing triangular frame to the wall-mounted support. Bolt the lower sections of the inner and outer hanging frames to the bottom ring beam respectively. Bolt the bottom of the support column of the outer ring wall-mounted support assembly to the outer ring load-bearing triangular frame. Bolt the bottom of the support column of the inner ring wall-mounted support assembly to the inner ring load-bearing triangular frame. Hoist the upper section of the integrated platform outer hanging frame. Place the bottom beam of the upper section of the outer hanging frame on the bottom ring beam. Bolt the hanger rod of the upper section of the outer hanging frame to the bottom ring beam. Bolt the ring truss to the support columns on both sides.

[0015] Step 3: Hoist the outer ring construction platform. The construction platform between the two outer ring support columns is a unit module. After a unit module is hoisted into place and bolted to the top of the outer ring support column, the hook can be released. Hoist each unit module in sequence, and bolt the steel beams between adjacent unit modules. Weld the steel beams at the crane support positions. Similarly, hoist each unit module of the inner ring construction platform in sequence, and bolt the steel beams between adjacent unit modules. Finally, connect the inner ring construction platform and the outer ring construction platform into a whole.

[0016] The installation method of the integrated platform system for nuclear power plant containment construction of the present invention includes: First, embedding pre-embedded bolts at predetermined positions on the nuclear power plant containment; connecting the wall-mounted supports to the pre-embedded bolts of the current layer that has been poured; bolting the bottom ring beam to the load-bearing triangular frame; connecting the load-bearing triangular frame to the wall-mounted supports; bolting the lower sections of the inner and outer hanging frames to the bottom ring beam; bolting the bottom of the support columns of the outer ring wall-mounted support assembly to the outer ring load-bearing triangular frame; bolting the bottom of the support columns of the inner ring wall-mounted support assembly to the inner ring load-bearing triangular frame; hoisting the upper section of the integrated platform's outer hanging frame, with the two ends of the bottom beam of the upper section of the outer hanging frame resting on the bottom ring beam; bolting the hanger rods of the upper section of the outer hanging frame to the bottom ring beam; bolting the ring truss to the support columns on both sides; sequentially hoisting each unit module of the outer ring construction platform, with the steel beams between adjacent unit modules bolted together; then, sequentially hoisting and bolting each unit module of the inner ring construction platform; finally, connecting the inner and outer ring construction platforms into a whole. This installation method breaks down the integrated platform system into standard modules such as the bottom ring beam, load-bearing triangular frame, supporting columns, hanging brackets, and construction platform. Through precise positioning of wall-mounted supports, a stable top-down force transmission path, and standardized installation procedures, it achieves controllable and efficient modular assembly, significantly increasing the construction speed of the nuclear power plant containment vessel while ensuring safety standards and construction quality.

[0017] The present invention also provides a method for dismantling an integrated platform system for the construction of a nuclear power plant containment structure, comprising the following steps:

[0018] Step 1: After the concrete pouring and curing of the inner and outer containment structures of the nuclear power plant are completed, the various unit modules of the construction platform are lifted off in sequence along the circumference.

[0019] Step 2: Lift the upper sections of the inner and outer hanging frames in sequence along the circumferential direction;

[0020] Step 4: The supporting columns are divided into modules, and the ring truss between the supporting columns is removed in sequence. Each supporting column is then lifted off the ring in sequence.

[0021] Step 5: Lift the lower sections of the inner and outer hanging frames in sequence along the circumferential direction;

[0022] Step 6: Remove the load-bearing tripods one by one.

[0023] The dismantling method of the integrated platform system for nuclear power plant containment construction of this invention adopts the principle of "install first, dismantle later, and dismantle last-install first" according to the construction process of nuclear power plant containment. First, the various unit modules of the construction platform are dismantled sequentially along the circumferential direction. Then, the upper sections of the inner and outer hanging frames and the ring truss are lifted sequentially along the circumferential direction. Next, the lower sections of each supporting column, inner and outer hanging frames are lifted sequentially along the circumferential direction. Finally, the load-bearing triangular frame and wall-mounted supports are dismantled. Dismantling the integrated platform system in reverse order ensures that the load borne by any component can be safely and predictably transferred to the remaining structural components when dismantling any component, avoiding sudden redistribution of load or the formation of an unstable cantilever structure. Moreover, dismantling the top construction platform module and the upper sections of the inner and outer hanging frames first is equivalent to gradually relieving the working load and self-weight of the top, lowering the center of gravity of the entire integrated platform system, providing a wider working space and hoisting channel for the dismantling of lower components, reducing the risk of high-altitude cross-operations, and avoiding collisions between components during hoisting.

[0024] This invention also provides a construction method for an integrated platform system for the construction of nuclear power plant containment structures, comprising the following steps:

[0025] Step 1: Install pre-embedded bolts on the Nth layer of the outer shell to be poured in the nuclear power plant containment structure, set up the formwork system and close the formwork, and pour concrete for the Nth layer of the outer shell and the Mth layer of the inner shell; after the Nth layer of the outer shell meets the concrete curing conditions, remove the formwork, connect the wall-mounted supports to the pre-embedded bolts on the Nth layer of the outer shell, connect the wall-mounted support device to the wall-mounted support, and install the hanging device and hydraulic climbing system on the wall-mounted support device in sequence;

[0026] Step Two: The hydraulic cylinders of the hydraulic climbing system drive the upper and lower climbing fall arrestors to alternately lift the climbing guide rail. The climbing guide rail is raised by one standard floor height and fixed to the wall-mounted device on the Nth floor using insert plates. During the lifting process of the climbing guide rail, the lowest wall-mounted support is removed. After the wall-mounted support device and hanging bracket device climb to the Nth floor of the outer shell to be poured, the following steps are taken: Vertical reinforcement transfer: The opening and closing flaps of the construction platform are closed, and the vertical reinforcement of the outer shell is vertically transferred through the gaps in the grating plate. The vertical reinforcement of the inner shell is transferred through the gap between the construction platform and the inner and outer shell structures. Horizontal reinforcement transfer: The opening and closing flaps of the construction platform are opened to form a material unloading area. The horizontal reinforcement is hoisted by a folding boom crane and placed on the load-bearing flaps on both sides of the outer shell and the load-bearing flaps of the inner shell. Embedded parts transfer: The folding boom crane is used to hoist the parts to the operating level through the vertical transportation channel of the operating frame. The parts are then horizontally transported to the construction position by a flatbed truck and lifted and positioned by an electric hoist.

[0027] Step 3: The hydraulic cylinder drives the upper and lower climbing fall arrestors to alternately support the climbing guide rail, pushing the hanging frame device to climb one standard floor height. The load-bearing tripod is supported by the wall-mounted support on the Nth floor, and the construction process of the next standard floor begins. This process is repeated layer by layer to complete the concrete pouring construction of the nuclear power plant containment structure.

[0028] This invention discloses a construction method for an integrated platform system for nuclear power plant containment construction. The method directly and reliably transfers the construction platform load and construction load to the already cast-in-place outer shell through load-bearing triangular frames and wall supports, ensuring structural stability throughout the construction process. The load transfer path is clear and unambiguous, avoiding safety risks. Efficient transfer of reinforcing bars and embedded parts is achieved through opening and closing flaps, a folding boom crane, and a vertical transport channel. Vertical reinforcing bars of the outer shell are transferred using gaps in the grating, reducing the number of platform openings and closings and lowering equipment wear. Vertical reinforcing bars of the inner shell are transferred through gaps between the inner and outer shells, utilizing structural gaps to achieve continuous operation and avoid interference from overlapping construction. Horizontal reinforcing bars are hoisted to the load-bearing flaps by a folding boom crane, improving the positioning accuracy of horizontal reinforcing bars. The load-bearing flaps are layered, reducing the risks of working at heights. Embedded parts are transported using a vertical transport channel via a folding boom crane, shortening vertical transport time. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a structure of an embodiment of the nuclear power plant containment construction integrated platform system of the present invention;

[0030] Figure 2 This is a top view of the steel platform frame of the construction platform in one embodiment of the present invention;

[0031] Figure 3 This is a plan view of the machine location arrangement of the wall-mounted support device in one embodiment of the present invention;

[0032] Figure 4This is a schematic diagram of the structure of the wall-mounted support connected to the pre-embedded bolt in one embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram showing the connection relationship between the pre-embedded bolts and the template connector in one embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the template connector in one embodiment of the present invention;

[0035] Figures 7 to 11 This is a schematic diagram of the installation steps of the nuclear power plant containment construction integrated platform system of the present invention;

[0036] Figure 12 This is a schematic diagram of steel reinforcement transfer in the construction method of the integrated platform system for nuclear power plant containment construction of the present invention.

[0037] Figure 13 This is a schematic diagram of the transfer of embedded parts in the construction method of the integrated platform system for building a nuclear power plant containment structure according to the present invention.

[0038] The numbers in the diagram are as follows:

[0039] Inner shell 1; outer shell 2; steel lining 3; construction platform 10; circumferential main beam 11; radial main beam 12; radial secondary beam 14; edge sealing beam 15; outer ring wall support assembly 20; embedded bolts 21; template connectors 23; fixing screws 24; outer ring wall support 22; outer ring load-bearing triangular frame 25; outer ring bottom ring beam 26; outer ring support column 27; ring truss 28; adjustable support 29; inner ring wall support assembly 30; inner ring wall support 32; inner ring load-bearing triangular frame 34; inner ring bottom ring beam 35; inner ring support column 36; outer hanging frame 41; inner hanging frame 42; circumferential track beam 51; ring rail crane 52. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clearly illustrate the embodiments of the present invention. For ease of description, the terms "upper" and "lower" used below are consistent with the upper and lower directions in the drawings, but this should not be construed as a limitation of the technical solution of the present invention.

[0041] Example 1

[0042] Combination Figures 1 to 6 The present invention describes an integrated platform system for the construction of a nuclear power plant containment structure, which includes: a construction platform 10, a wall-mounted support device, a hanging frame device, and a hydraulic climbing system;

[0043] The construction platform 10 is arranged circumferentially on top of the containment vessel of the nuclear power plant to be constructed; the construction platform 10 serves as an operating platform for construction personnel, and is also used for stacking materials such as steel bars, as well as integrating mechanical equipment;

[0044] The wall-mounted support device includes an outer ring wall-mounted support assembly 20 disposed on the outside of the outer shell 2, and an inner ring wall-mounted support assembly 30 disposed between the inner shell 1 and the outer shell 2 (here, the side closer to the steel lining 3 is the inner ring, and the side farther from the steel lining 3 is the outer ring). The outer ring wall-mounted support assembly 20 includes an outer ring wall-mounted support 22, an outer ring load-bearing triangular frame 25, an outer ring bottom ring beam 26, and an outer ring support column 27. Multiple outer ring wall-mounted supports 22 are arranged circumferentially and spaced apart and connected to the outside of the outer shell 2. Multiple outer ring load-bearing triangular frames 25 are detachably connected to the corresponding outer ring wall-mounted supports 22. The outer ring bottom ring beam 26 is arranged circumferentially on the top of multiple outer ring load-bearing triangular frames 25 and flush with its crossbeam, used to support the multiple outer ring load-bearing columns. The tripod 25 is circumferentially connected as a whole, and multiple outer ring support columns 27 are detachably connected to the top of the outer ring load-bearing tripod 25. The inner ring wall-mounted support assembly 30 includes an inner ring wall-mounted support 32, an inner ring load-bearing tripod 34, an inner ring bottom ring beam 35, and an inner ring support column 36. Multiple inner ring wall-mounted supports 32 are circumferentially and spaced apart and connected to the inside of the outer shell 2. Multiple inner ring load-bearing tripods 34 are detachably connected to the corresponding inner ring wall-mounted supports 32. The inner ring bottom ring beam 35 is circumferentially set on the top of multiple inner ring load-bearing tripods 34 and flush with its crossbeam, used to connect multiple inner ring load-bearing tripods 34 circumferentially as a whole. Multiple inner ring support columns 36 are detachably connected to the top of the inner ring load-bearing tripod 34.

[0045] The hanging device includes an outer hanging bracket 41 vertically disposed on the outside of the outer shell 2, and an inner hanging bracket 42 vertically disposed between the inner shell 1 and the outer shell 2;

[0046] The hydraulic climbing system includes a climbing guide rail, two climbing fall arresters, and a power system. The two ends of the double-acting hydraulic cylinder of the power system are connected to the two climbing fall arresters respectively, and the climbing fall arrester located at the top is connected to the load-bearing tripod.

[0047] The integrated platform system for constructing a nuclear power plant containment structure of the present invention includes a construction platform 10, a wall-mounted support device, a hanging bracket device, and a hydraulic climbing system. The construction platform 10 is circumferentially arranged on the top of the containment structure of the nuclear power plant to be constructed. The inner and outer wall-mounted support components of the wall-mounted support device each include multiple wall-mounted supports circumferentially and spacedly embedded on both sides of the outer shell 2, multiple load-bearing triangular frames detachably connected to the wall-mounted supports, a bottom ring beam circumferentially arranged and connected to the top of the multiple load-bearing triangular frames, and support columns detachably connected to the top of the load-bearing triangular frames. The wall-mounted support device is used to support the entire integrated platform system during the construction phase and to transfer vertical and horizontal loads to the concrete structure of the nuclear power plant containment structure. The hanging bracket device includes an outer hanging bracket 41 vertically arranged on the outside of the outer shell 2 and an inner hanging bracket 42 vertically arranged between the inner shell 1 and the outer shell 2. In the hydraulic climbing system, the two ends of the double-acting hydraulic cylinder of the power system are respectively connected to two climbing fall arresters, and the climbing fall arrester located at the top is connected to the load-bearing triangular frame. The wall-mounted support device of this integrated platform system adopts a double-sided symmetrical arrangement, which provides more balanced stress distribution compared to the traditional single-sided arrangement. The integrated platform system has a lightweight structure, avoiding the drawbacks of excessive steel consumption caused by large cantilever structures. The bottom ring beam connects the inner and outer load-bearing triangular frames into a unified portal frame, enhancing the overall stability and anti-overturning capability of the structure. The bottom ring beam also redistributes some of the load from the inner and outer hanging frames 41 and the construction platform 10, preventing excessive load concentration on a single load-bearing triangular frame or wall-mounted support, resulting in more even stress distribution. Multiple supporting columns connected to the top of the load-bearing triangular frames establish multiple robust support points, effectively transferring the load on the construction platform 10 to the concrete structure. The bottom ring beam, load-bearing triangular frames, and supporting columns together form a stable spatial frame, effectively resisting stress generated during construction. The system effectively mitigates horizontal loads, eccentric loads, and vibrations caused by operation, ensuring that the entire construction platform 10 does not experience excessive swaying or deformation, thus providing a stable and safe working surface for high-altitude operations. Each component of the integrated platform system is divided into units and modularly designed according to its stress characteristics and functional requirements, taking into account modular standards, storage, transportation, installation, and dismantling techniques, forming a fully enclosed working environment. A side-top climbing process is employed, using double-acting hydraulic cylinders to drive the upper and lower fall-prevention climbing devices alternately, enabling the integrated platform system to perform climbing operations. The integrated platform system provides multiple working surfaces, functionally divided from top to bottom into a top platform layer, a construction operation layer, and an equipment operation layer. It features good enclosure, high load-bearing capacity, high construction efficiency, high safety, and strong structural adaptability, allowing for synchronous overall climbing, individual internal and external climbing, and segmented unit climbing.

[0048] like Figure 2As shown, the construction platform 10 includes a steel platform frame, a cover plate laid on top of the steel platform frame, and a fence surrounding the outer side of the top of the steel platform frame. The steel platform frame is formed by connecting a circumferential main beam 11 circumferentially arranged outside the outer shell 2 and circumferentially arranged between the inner shell 1 and the outer shell 2, multiple radial main beams 12 and radial secondary beams 14 arranged radially along the nuclear power plant containment structure, and an edge sealing beam 15 circumferentially arranged outside the radial main beams 12. The area covered by the circumferential main beams 11 is the material loading area, and several lower sections are reserved in the area of ​​the construction platform 10 located at the top of the outer shell 2. In the material unloading area, tower cranes or hoisting facilities integrated on the construction platform 10 can transport materials to the work surface through the unloading area. The perimeter of the unloading area and the edges of the construction platform 10 are enclosed by fencing. According to the structural characteristics of the nuclear power plant containment vessel, the construction platform 10 meets the construction requirements of special locations such as the buttress column area and the gate area by means of measures such as partial avoidance of steel beams and setting detachable joints. The steel platform frame also includes multiple radially arranged lifting beams. The lifting beams are set below the circumferential main beam 11. The lifting beams are staggered from the positions of the hanging device and the supporting column. The lifting beams can move along the circumferential direction to improve the adaptability during the formwork construction process.

[0049] like Figure 1 As shown, the number and location of the wall-mounted support devices are determined in accordance with the structural characteristics of the nuclear power plant containment vessel, giving priority to avoiding special structural areas such as structural openings, through parts, embedded parts, secondary pouring areas, and surrounding plant walls, while also taking into account the actual load requirements of the integrated platform and the bearing capacity of the support system. The wall-mounted support device is segmented along the facade, allowing for more flexible adaptation to construction in special locations such as gate areas and buttress column areas. The supporting columns of the wall-mounted support device are four-limb combined lattice structures, featuring high load-bearing capacity and high rigidity. The load-bearing triangular frame rests on the pin of the wall-mounted support through a suspension component set on the top side, used to bear the vertical and horizontal loads of the integrated platform. At the same time, the adjustable support 29 set on the bottom side of the load-bearing triangular frame is pressed against the wall of the outer shell 2 to bear the horizontal load. The wall-mounted support is fixed to the inner and outer sides of the outer shell 2 by pre-embedded bolts 21, which has the advantages of light weight, small size, and easy rotation. If there are obstacles that cannot be avoided in the concrete structure, irregular wall-mounted supports can also be designed according to actual needs, and their shape can be adjusted to meet construction requirements.

[0050] The existing integrated platform forms a truss at the top, which has high rigidity, but at the machine location, the lateral constraints are small, and the integrated platform as a whole is at risk of torsion; for example Figure 1As shown, the top construction platform 10 of the integrated platform system of this application is a steel beam structure, which is lightweight. The wall-mounted support device also includes a ring truss 28, which is circumferentially arranged on the outside of the support columns of the outer ring wall-mounted support assembly 20. The ring truss 28 is bolted to the support columns located on both sides of it, which is used to enhance the integrity of the entire integrated platform system and control the overall lateral deformation, thereby improving the torsional resistance of the integrated platform system.

[0051] like Figure 12 and Figure 13 As shown, the nuclear power plant containment construction integrated platform system also includes a ring rail crane 52. A ring rail beam 51 is provided on the ring main beam 11 of the construction platform 10. The traveling mechanism of the ring rail crane 52 is mounted on the ring rail beam 51 for transporting materials along the ring.

[0052] The integrated platform system for the construction of the nuclear power plant containment also includes an opening and closing canopy device. This device is located at the material channel opening of the construction platform 10 and includes a pair of rails installed on the crossbeams on both sides of the material channel of the construction platform 10, a canopy traveling mechanism mounted on the rails, a truss support connected to the canopy traveling mechanism, and a membrane canopy connected to the top of the truss support. Because the concrete of the nuclear power plant containment has strict requirements for curing temperature and humidity, the opening and closing canopy device not only improves operational accuracy and safety but also improves the concrete curing environment, effectively preventing cracking of the concrete structure.

[0053] like Figure 1As shown, the hanging bracket device is vertically installed between the construction platform 10 and the wall-mounted support device. The hanging bracket device consists of a hanger, walkway, enclosure, stairs, and fall arrestor, providing a three-dimensional working space for concrete structure reinforcement binding, formwork closure, and concrete pouring. Both the inner hanging bracket 42 and the outer hanging bracket 41 are divided into upper and lower sections. The upper section of the inner hanging bracket 42 and the outer hanging bracket 41 connects to the construction platform 10 and the bottom ring beam, while the lower section is suspended from the bottom of the bottom ring beam. The inner and outer hanging brackets 41 adopt a segmented structure, facilitating on-site assembly of the hanging bracket device. The upper and lower hanging brackets can also be hoisted independently, improving construction efficiency and adaptability to special working conditions during construction. The sides and bottom of the hanging bracket device are formed by enclosures, fall arrestor, etc., creating a three-dimensional, fully enclosed working space. The enclosed protective system ensures the safety of construction personnel working inside and prevents accidents involving falls of people or objects from heights. Several staircases are installed within both the inner and outer hanging frames 41, serving as access routes between floors. The outer hanging frame 41 has several vertical material discharge ports to meet the needs of transferring embedded parts and other materials. Load-bearing flaps are installed on the side of the inner hanging frame 42 and outer hanging frame 41 closest to the outer shell 2. These flaps can be retracted when not in use to avoid interference with the formwork or other components, and can be extended or flipped up when in use. It is evident that in existing integrated platforms, the overall hanging frame is suspended from the top truss of the construction platform 10. This requires the overall hanging frame to be lifted and installed after the top truss is installed, resulting in high safety risks and low construction efficiency. In contrast, the integrated platform system of this technical solution uses a segmented structure for the inner and outer hanging frames 41, with segmented load-bearing. During installation, the lower section of the inner and outer hanging frames 41 can be directly placed on the load-bearing triangular frame, while the upper section of the inner and outer hanging frames 41 is supported by the lower section, thus quickly forming a safe and efficient working surface for personnel and achieving overall modular installation.

[0054] The hydraulic power system's climbing guide rail uses a box-section column with climbing holes. Upper and lower climbing fall arrestors are attached to the climbing guide rail. A double-acting hydraulic cylinder drives the upper and lower climbing fall arrestors to alternately support and climb, achieving self-retraction of the climbing guide rail and climbing of the integrated platform. The power system employs an integrated servo intelligent pump system, with one servo intelligent pump at each jacking point. The central control unit can provide real-time intelligent control, and each pump also has independent control functions, ensuring construction safety and intelligent data traceability. The use of upper and lower climbing fall arrestors paired with short-stroke hydraulic cylinders results in a small footprint, easy maintenance, low cumulative error during climbing, and high synchronization efficiency. A distributed hydraulic pump station system is used, with one pump station per machine location. Distributed hydraulic pump stations have short oil pipe necks, low hydraulic loss, small size, flexible space layout, and simpler piping, leading to more efficient system response.

[0055] Example 2

[0056] Combination Figures 1 to 11The installation method of the nuclear power plant containment construction integrated platform system of the present invention is described below, with specific steps as follows:

[0057] Step 1: Install pre-embedded bolts 21 at predetermined locations on the nuclear power plant containment structure. Specifically, square holes for installing template connectors 23 are provided at corresponding positions on the steel formwork for the pre-embedded bolts 21. The template connectors 23 are bolted to the steel formwork panel, and the tapered nuts of the pre-embedded bolts 21 are protected with plastic sleeves. After the steel formwork is closed and corrected, the pre-embedded bolts 21 are fixed to the template connectors 23 using fixing screws 24. Then, the template connectors 23 are installed at the corresponding positions on the steel formwork. Concrete for the current layer of the nuclear power plant containment structure is poured. After the concrete reaches the predetermined strength, the formwork is removed. Once the concrete pouring quality is confirmed to be good and the pre-embedded bolts 21 are accurately positioned, the wall-mounted supports are connected to the tapered nuts of the pre-embedded bolts 21 using load-bearing bolts.

[0058] Step Two: Hoist the load-bearing triangular frame to the bottom of the wall-mounted support and place it in position. Place the bottom ring beam on top of multiple load-bearing triangular frames. Connect the brackets at both ends of the bottom ring beam to the load-bearing triangular frames with bolts. Close the disconnected walkway and side netting at the machine location. Insert the climbing guide rail into the wall-mounted support from below. When the hook of the load-bearing triangular frame is close to the wall-mounted support, insert the load-bearing pin into the wall-mounted support to ensure the load-bearing triangular frame is supported by the wall-mounted support. Bolt the lower sections of the inner bracket 42 and the outer bracket 41 to the bottom ring beam, and attach the outer ring to the wall. The bottom of the support column of the support assembly 20 is bolted to the outer ring load-bearing triangular frame 25, and the bottom of the support column of the inner ring wall-mounted support assembly 30 is bolted to the inner ring load-bearing triangular frame 34; the upper section of the hoisting integrated platform external bracket 41 is installed, the two ends of the bottom beam of the upper section of the external bracket 41 rest on the bottom ring beam, the lifting rod of the upper section of the external bracket 41 is bolted to the bottom ring beam, and the ring truss 28 is bolted to the support columns on both sides; the lifting point beam of the support column is removed after the upper section of the external bracket 41 is installed and the operating surface is formed;

[0059] Step 3: Hoist the outer ring construction platform 10. The construction platform 10 between the two outer ring support columns 27 is a unit module. After a unit module is hoisted into place, it is bolted to the top of the outer ring support column 27 and then the hook can be released. Hoist each unit module in sequence, and bolt the steel beams between adjacent unit modules. Weld the steel beams at the crane support positions. Similarly, hoist each unit module of the inner ring construction platform 10 in sequence, and bolt the steel beams between adjacent unit modules. Finally, connect the inner ring construction platform 10 and the outer ring construction platform 10 into a whole.

[0060] The installation method of the nuclear power plant containment construction integrated platform system of the present invention includes: firstly, embedding pre-embedded bolts 21 at predetermined positions on the nuclear power plant containment; connecting the wall-mounted support to the pre-embedded bolts 21 of the current layer that has been poured; bolting the bottom ring beam to the load-bearing triangular frame; and connecting the load-bearing triangular frame to the wall-mounted support; bolting the lower sections of the inner bracket 42 and the outer bracket 41 to the bottom ring beam; bolting the bottom of the support column of the outer ring wall-mounted support assembly 20 to the outer ring load-bearing triangular frame 25; and bolting the bottom of the support column of the inner ring wall-mounted support assembly 30 to... The inner ring construction platform 10 is connected to the inner ring load-bearing triangular frame 34. The upper section of the outer frame 41 is hoisted, with both ends of the bottom beam resting on the bottom ring beam. The suspension rods of the upper section of the outer frame 41 are bolted to the bottom ring beam, and the ring truss 28 is bolted to the supporting columns on both sides. Each unit module of the outer ring construction platform 10 is hoisted sequentially, with steel beams bolted between adjacent unit modules. Then, each unit module of the inner ring construction platform 10 is hoisted sequentially and bolted together. Finally, the inner and outer ring construction platforms 10 are connected as a whole. This installation method decomposes the integrated platform system into standard modules such as the bottom ring beam, load-bearing triangular frame, supporting columns, hanging frames, and construction platform 10. Through precise positioning of wall-mounted supports, a stable top-down force transmission path, and standardized installation procedures, controllable and efficient modular assembly is achieved. This significantly increases the construction speed of the nuclear power plant containment vessel while ensuring safety standards and construction quality.

[0061] In step two, before hoisting the support column, a lifting point beam is installed at the top of the support column. During hoisting, a temporary ladder is installed on one side of the support column. The top of the temporary ladder is fixed to the lifting point beam of the support column via hooks, and the bottom of the temporary ladder is connected to the support column via clamps. A separate steel wire rope is attached to the top of the temporary ladder and hung on the crane hook. A fall arrestor is attached to the crane hook, and the fall arrestor hook is attached to the bottom of the temporary ladder. After the support column is in place, the workers attach the fall arrestor hook to its safety belt, climb to the top of the support column via the temporary ladder, and then unhook the steel wire rope. After unhooking, the workers descend the temporary ladder to the bottom platform, loosen the clamps from the support column, reattach the fall arrestor hook to the temporary ladder, and then lift the crane to reuse the temporary ladder.

[0062] Example 3

[0063] Combination Figures 1 to 11 The dismantling method of the nuclear power plant containment construction integrated platform system of the present invention is described in detail below:

[0064] Step 1: After the concrete pouring and curing of the inner containment shell 1 and outer containment shell 2 of the nuclear power plant are completed, the formwork and its accessories are removed and hoisted away, hydraulic oil pipes, cables, control lines, etc. are collected and organized, temporary materials are collected and removed, and all kinds of construction waste on the construction platform 10 are cleaned up. Demolition work begins after all preparations for demolition are confirmed to be complete. Figure 3 As shown, the various unit modules of the construction platform 10 are lifted off one by one in a clockwise direction;

[0065] Step Two: As Figure 3 As shown, the upper sections of the inner bracket 42 and the outer bracket 41 are lifted off in sequence from #20 to #1.

[0066] Step 4: The supporting columns are divided into modules, and the ring truss 28 between the supporting columns is removed in sequence. Each supporting column is lifted off in sequence from #20 to #1.

[0067] Step 5: Sequentially lift the lower sections of the inner bracket 42 and the outer bracket 41 from #20 to #1;

[0068] Step Six: Remove the load-bearing tripods one by one, and the construction workers descend to the ground from the climbing ladder cage.

[0069] The dismantling method of the integrated platform system for nuclear power plant containment construction of the present invention adopts the principle of "install first, dismantle later, and dismantle later" according to the construction process of nuclear power plant containment. First, each unit module of the construction platform 10 is dismantled sequentially along the circumferential direction. Then, the upper sections of the inner frame 42 and the outer frame 41 and the ring truss 28 are lifted off sequentially along the circumferential direction. Next, each supporting column, the lower section of the inner frame 42 and the outer frame 41 are lifted off sequentially along the circumferential direction. Finally, the load-bearing triangular frame and the wall-mounted support are dismantled. By dismantling the integrated platform system in reverse order, it is ensured that the load borne by any component can be safely and predictably transferred to the remaining structural components when any component is dismantled, avoiding sudden redistribution of load or the formation of an unstable cantilever structure. Moreover, dismantling the top construction platform module 10 and the upper sections of the inner and outer hanging frames 41 first is equivalent to gradually relieving the working load and self-weight of the top, lowering the center of gravity of the entire integrated platform system, providing a wider working space and hoisting passage for the dismantling of the lower components, reducing the risk of high-altitude cross-operations, and avoiding collisions between components during hoisting.

[0070] In the aforementioned dismantling method, when the integrated platform system needs to be partially dismantled and modified due to construction at a special location, the frame above the bottom ring beam can be dismantled. The bottom ring beam and the load-bearing triangular frame are attached to the concrete structure of the outer shell 2 to form a temporary construction operation platform for construction personnel. A spare triangular frame can be pre-set near the dismantling section and suspended at the bottom of the bottom ring beam to form a double-triangular frame collaborative operation mode with the initially used load-bearing triangular frame. This mode is not used under normal working conditions but is activated when the integrated platform system needs to be partially stopped during dismantling and modification. This avoids situations such as excessive cantilever due to the transformation into an integrated platform system, and enables rapid adjustment of support points during the modification process, ensuring the structural stability of the integrated platform system under unconventional conditions.

[0071] Example 4

[0072] Combination Figures 1 to 11 The construction method of the integrated platform system for building a nuclear power plant containment structure according to the present invention is described in the following steps:

[0073] Step 1: Install pre-embedded bolts 21 on the Nth layer of the outer shell 2 to be poured in the containment building of the nuclear power plant, set up the formwork system and close the formwork, and pour concrete for the Nth layer of the outer shell 2 and the Mth layer of the inner shell 1; after the Nth layer of the outer shell 2 meets the concrete curing conditions, remove the formwork, connect the wall-mounted support to the pre-embedded bolts 21 on the Nth layer of the outer shell 2, connect the wall-mounted support device to the wall-mounted support, and install the hanging device and hydraulic climbing system on the wall-mounted support device in sequence;

[0074] Step Two: The hydraulic cylinders of the hydraulic climbing system drive the upper and lower climbing fall arrestors to alternately lift the climbing guide rail, raising it by one standard floor height. The guide rail is then fixed to the wall-mounted device on the Nth floor using insert plates. During the lifting process, the lowest wall-mounted support is removed. After the wall-mounted support device and hanger device have climbed to the Nth floor of the outer shell 2 to be poured, as... Figure 12 As shown, the vertical reinforcement transfer method is as follows: when the flap of the construction platform 10 is closed, the vertical reinforcement of the outer shell 2 is transferred vertically through the gaps in the grating plate, and the vertical reinforcement of the inner shell 1 is transferred through the gap between the construction platform 10 and the inner and outer shell structures; the horizontal reinforcement transfer method is as follows: when the flap of the construction platform 10 is opened to form a material unloading area, the horizontal reinforcement is hoisted by a folding boom crane and placed on the load-bearing flaps on both sides of the outer shell 2 and the load-bearing flaps of the inner shell 1; the embedded parts transfer method is as follows: the embedded parts are hoisted to the operating layer through the vertical transportation channel of the operating frame using a folding boom crane, and then horizontally transported to the construction position by a flatbed truck within the operating layer, and then lifted and positioned by an electric hoist;

[0075] Step 3: The hydraulic cylinder drives the upper and lower climbing fall arrestors to alternately support the climbing guide rail, pushing the hanging frame device to climb one standard floor height. The load-bearing tripod is supported by the wall-mounted support on the Nth floor, and the construction process of the next standard floor begins. This process is repeated layer by layer to complete the concrete pouring construction of the nuclear power plant containment structure.

[0076] This invention discloses a construction method for an integrated platform system for nuclear power plant containment construction. The method directly and reliably transfers the loads of the construction platform 10 and the construction loads to the already cast outer shell 2 via a load-bearing triangular frame and wall-mounted supports, ensuring structural stability throughout the construction process. The load transfer path is clear and unambiguous, avoiding safety risks. Efficient transfer of reinforcing bars and embedded parts is achieved through opening and closing flaps, a folding boom crane, and a vertical transport channel. Vertical reinforcing bars of the outer shell 2 are transferred using gaps in the grating, reducing the number of opening and closing operations of the construction platform 10 and lowering equipment wear. Vertical reinforcing bars of the inner shell 1 are transferred through gaps between the inner and outer shells 2, enabling continuous operation using structural gaps and avoiding interference from cross-construction. Horizontal reinforcing bars are hoisted to the load-bearing flaps by a folding boom crane, improving the positioning accuracy of the horizontal reinforcing bars. The load-bearing flaps are layered, reducing the risks of high-altitude operations. Embedded parts are transported via a vertical transport channel using a folding boom crane, shortening vertical transport time.

[0077] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the claims.

Claims

1. An integrated platform system for constructing a nuclear power plant containment structure, characterized in that, include: The system includes a construction platform, wall-mounted support devices, hanging brackets, and a hydraulic climbing system. The construction platform is circumferentially positioned on top of the containment structure of the proposed nuclear power plant. The wall-mounted support devices include an outer ring wall-mounted support assembly located on the outside of the outer shell and an inner ring wall-mounted support assembly located between the inner and outer shells. Both the inner and outer ring wall-mounted support assemblies include wall-mounted supports, load-bearing triangular frames, a bottom ring beam, and supporting columns. Multiple wall-mounted supports are circumferentially and spaced apart, connected to both sides of the outer shell. Multiple load-bearing triangular frames are detachably connected to... The corresponding wall-mounted supports have bottom ring beams circumferentially mounted on top of multiple load-bearing triangular frames and flush with the crossbeams of the load-bearing triangular frames. Multiple supporting columns are detachably connected to the top of the load-bearing triangular frames. The hanging device includes an outer hanging frame vertically mounted on the outside of the outer shell and an inner hanging frame vertically mounted between the inner shell and the outer shell. The hydraulic climbing system includes climbing guide rails, two climbing fall arresters, and a power system. The two ends of the double-acting hydraulic cylinder of the power system are connected to the two climbing fall arresters respectively. The climbing fall arrester located at the top is connected to the load-bearing triangular frame.

2. The integrated platform system for nuclear power plant containment construction according to claim 1, characterized in that: The construction platform includes a steel platform frame, a cover plate laid on top of the steel platform frame, and a fence surrounding the outside of the top of the steel platform frame. The steel platform frame is composed of a circumferential main beam arranged on the outside of the outer shell and a circumferential main beam arranged between the inner shell and the outer shell, multiple radial main beams and radial secondary beams arranged radially along the containment structure of the nuclear power plant, and a sealing beam arranged on the outside of the radial main beams.

3. The integrated platform system for nuclear power plant containment construction according to claim 1, characterized in that: The load-bearing triangular frame rests on the pin of the wall-mounted support via a suspension component located on the top side, and an adjustable support located on the bottom side of the load-bearing triangular frame presses against the wall surface of the outer casing.

4. The integrated platform system for nuclear power plant containment construction according to claim 1, characterized in that: The wall-mounted support device also includes a ring truss, which is circumferentially arranged outside the support columns of the outer ring wall-mounted support assembly, and the ring truss is bolted to the support columns located on both sides thereon.

5. The integrated platform system for nuclear power plant containment construction according to claim 1, characterized in that: It also includes a ring track crane, with a ring track beam on the ring main beam of the construction platform, and the traveling mechanism of the ring track crane is mounted on the ring track beam.

6. The integrated platform system for the construction of nuclear power plant containment structures according to claim 1, characterized in that: It also includes an opening and closing canopy device, which is set at the material channel opening of the construction platform. It includes a pair of rails installed on the crossbeams on both sides of the material channel of the construction platform, a canopy traveling mechanism erected on the pair of rails, a truss support connected to the canopy traveling mechanism, and a film canopy connected to the top of the truss support.

7. The integrated platform system for the construction of nuclear power plant containment structures according to claim 1, characterized in that: The inner and outer hanging brackets of the hanging bracket device are divided into upper and lower sections. The upper section of the inner and outer hanging brackets is connected between the construction platform and the bottom ring beam, and the lower section of the inner and outer hanging brackets is suspended from the bottom of the bottom ring beam. A load-bearing flap is installed on the side of the inner and outer hanging brackets closest to the outer shell.

8. An installation method for an integrated platform system for the construction of a nuclear power plant containment structure, characterized in that, The steps are as follows: Step 1: Install pre-embedded bolts at the predetermined positions of the nuclear power plant containment vessel, connect the template connectors to the steel template panel with bolts, and after the steel template is closed and corrected, fix the pre-embedded bolts to the template connectors with fixing screws, pour the concrete of the current layer of the nuclear power plant containment vessel, and connect the wall support bolts to the pre-embedded bolts. Step 2: Hoist the load-bearing triangular frame to the bottom of the wall-mounted support and place it in position. Place the bottom ring beam on top of multiple load-bearing triangular frames. Connect the bracket bolts at both ends of the bottom ring beam to the load-bearing triangular frames. Insert the climbing guide rail into the wall-mounted support from below. When the hook of the load-bearing triangular frame is close to the wall-mounted support, insert the load-bearing pin into the wall-mounted support to connect the load-bearing triangular frame to the wall-mounted support. Bolt the lower sections of the inner and outer hanging frames to the bottom ring beam respectively. Bolt the bottom of the support column of the outer ring wall-mounted support assembly to the outer ring load-bearing triangular frame. Bolt the bottom of the support column of the inner ring wall-mounted support assembly to the inner ring load-bearing triangular frame. Hoist the upper section of the integrated platform outer hanging frame. Place the bottom beam of the upper section of the outer hanging frame on the bottom ring beam. Bolt the hanger rod of the upper section of the outer hanging frame to the bottom ring beam. Bolt the ring truss to the support columns on both sides. Step 3: Hoist the outer ring construction platform. The construction platform between the two outer ring support columns is a unit module. After a unit module is hoisted into place and bolted to the top of the outer ring support column, the hook can be released. Hoist each unit module in sequence, and bolt the steel beams between adjacent unit modules. Weld the steel beams at the crane support positions. Similarly, hoist each unit module of the inner ring construction platform in sequence, and bolt the steel beams between adjacent unit modules. Finally, connect the inner ring construction platform and the outer ring construction platform into a whole.

9. A method for dismantling an integrated platform system for the construction of a nuclear power plant containment structure, characterized in that, The steps are as follows: Step 1: After the concrete pouring and curing of the inner and outer containment structures of the nuclear power plant are completed, the various unit modules of the construction platform are lifted off in sequence along the circumference. Step 2: Lift the upper sections of the inner and outer hanging frames in sequence along the circumferential direction; Step 4: The supporting columns are divided into modules, and the ring truss between the supporting columns is removed in sequence. Each supporting column is then lifted off the ring in sequence. Step 5: Lift the lower sections of the inner and outer hanging frames in sequence along the circumferential direction; Step 6: Remove the load-bearing tripods one by one.

10. A construction method for an integrated platform system for the construction of a nuclear power plant containment structure, characterized in that, The steps are as follows: Step 1: Install pre-embedded bolts on the Nth layer of the outer shell to be poured in the nuclear power plant containment structure, set up the formwork system and close the formwork, and pour concrete for the Nth layer of the outer shell and the Mth layer of the inner shell. After the Nth layer of the outer shell meets the concrete curing conditions, the formwork is removed, the wall-mounted support is connected to the pre-embedded bolts of the Nth layer of the outer shell, the wall-mounted support device is connected to the wall-mounted support, and the hanging device and hydraulic climbing system are installed on the wall-mounted support device in sequence. Step Two: The hydraulic cylinders of the hydraulic climbing system drive the upper and lower climbing fall arrestors to alternately lift the climbing guide rail. The climbing guide rail is raised by one standard floor height and fixed to the wall-mounted device on the Nth floor using insert plates. During the lifting process of the climbing guide rail, the lowest wall-mounted support is removed. After the wall-mounted support device and hanging device climb to the Nth floor of the outer shell to be poured, the vertical reinforcement is transferred as follows: the opening and closing flaps of the construction platform are closed, and the vertical reinforcement of the outer shell is transferred vertically through the gaps in the grating plate. The vertical reinforcement of the inner shell is transferred through the gap between the construction platform and the inner and outer shell structures. The horizontal reinforcement is transferred as follows: the opening and closing flaps of the construction platform are opened to form a material unloading area. The horizontal reinforcement is hoisted by the folding arm crane and placed on the load-bearing flaps on both sides of the outer shell and the load-bearing flaps of the inner shell. Embedded parts transfer: The parts are lifted to the operating level by a folding boom crane through the vertical transport channel of the operating frame, and then horizontally transported to the construction position by a flatbed truck within the operating level. Finally, they are lifted and positioned by an electric hoist. Step 3: The hydraulic cylinder drives the upper and lower climbing fall arrestors to alternately support the climbing guide rail, pushing the hanging frame device to climb one standard floor height. The load-bearing tripod is supported by the wall-mounted support on the Nth floor, and the construction process of the next standard floor begins. This process is repeated layer by layer to complete the concrete pouring construction of the nuclear power plant containment structure.

Images