CN105714935A - AP1000 superposed dome assembling technology - Google Patents
AP1000 superposed dome assembling technology Download PDFInfo
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Abstract
The invention belongs to the technical field of nuclear power building construction, and particularly relates to AP1000 superposed dome assembling technology. The modular construction technology is adopted for an AP1000 superposed dome, a dome component is prefabricated into a unit structure in a processing workshop and conveyed to a site for integral assembly, and an construction operation is completed finally in an integral hoisting manner; during the on-site assembly, ring beam units are hoisted firstly, then 16-truss radial beam units are symmetrically hoisted, 32-truss horizontal connecting beams are mounted, a welding operation can be started after adjustment into place, ring beams can be mounted after 8-truss radial beam units are mounted into place, and then hoisting and assembly welding of a covering panel 15 are performed; after the ring beam units, the radial beam units and the horizontal connecting beams are all in place and form a stable structure, an upper part annular stairway and lifting platform, a passive containment cooling system valve enclosure structure, a protective shield and wire mesh and diffusor entry module are additionally introduced. The AP1000 superposed dome assembling technology can ensure smooth assembly of an AP1000 nuclear power steel dome.
Description
Technical field
The invention belongs to nuclear power technical field of building construction, be specifically related to a kind of AP1000 superposed type dome spelling technique.
Background technology
AP1000 nuclear power technology is business nuclear power technology the safest, state-of-the-art in nuclear power market, the current whole world, is also China's generation Ⅲ nuclear power proprietary technology simultaneously.AP1000 steel dome is assembled into an entirety by structures, protective plate/metal gauze/diffusor entry module four part between dome body, upper, annular stair/hoistable platform, Passive containment cooling system valve, and quantities is about 746.6T.Steel dome, as the important component part of passive system, forms superposition mode with CVTH, and it is also as the carrier preventing big aircraft impact in nuclear power heap-type, and these technology are all not available for other nuclear power heap-type.Dome component is various, and structure is complicated, and rational spelling technique is the guarantee of whole project progress and construction quality.
Summary of the invention
It is an object of the invention to provide a kind of AP1000 superposed type dome spelling technique, to ensure the smooth assembled of AP1000 nuclear power steel dome, improve the splicing accuracy of dome, construction speed and economic benefit.
The technical solution used in the present invention is:
A kind of AP1000 superposed type dome spelling technique, AP1000 superposed type dome adopts modularization construction process, in job shop, dome element precast is become monomer structure, and transport carries out integral assembling to scene, finally adopts the mode of integral hoisting to complete construction operation；During on-site consolidation, first lifting ring beam monomer, hereafter symmetrical lifting 16 Pin radial girders monomers, then 32 Pin level connection joint beams are installed, weld job after being adjusted in place, can be started, after 8 Pin radial girders monomers are in place, ring beam can be installed, then carry out lifting and the assembly welding of cladding boards 15；All in place at ring beam monomer, radial girders monomer and level connection joint beam and after forming robust structure, introduce structures, protective plate & metal gauze & diffusor entry module between upper, annular stair & hoistable platform, Passive containment cooling system valve separately；Protective plate & metal gauze & diffusor entry modular structure is introduced by ring beam space suitable for reading, and between upper, annular stair & hoistable platform and Passive containment cooling system valve, structures are introduced by the headspace of dome body radial girders monomer or cladding boards.
The concrete steps of this technique include: after ring beam monomer module assembly completes, and integral hoisting is to assembled moulding bed；Ring beam monomer is made up of ring beam and buttress brace, rood beam, and ring beam divides 3 sections prefabricated to dispatch from the factory, Assembling；After buttress brace, rood beam shop-fabricated, loose mail dispatches from the factory, Assembling；Ring beam monomer assembling flow path:, the bolt of spot welding buttress brace, rood beam, grill support is connected ring beam splicing seams welding high-strength bolt fastening anchor studs repair welding scene touch-up paint by ring beam splicing welding joint group；The buttress brace of three sections of ring beams and centre and rood beam are first combined into an entirety on the ground, and then integral hoisting is to moulding bed；Use a concrete foundation as the assembled moulding bed of ring beam, 32, the periphery concrete buttress that basis is dome integral assembling time assembled；The lifting of ring beam monomer uses truck crane.
The concrete steps of this technique include: according to ring beam monomer seated position positioning scenarios, radial girders monomer integral hoisting is to assembled moulding bed；Radial girders monomer totally 16 Pin, including radial girders, ring secondary beam, back rib channel-section steel, cladding boards；Needing symmetrical circumference to place during monomer hoisted in position, the lifting of radial girders monomer can use truck crane or the crawler crane of suitable tonnage.
The concrete steps of this technique include: according to the seated position of ring beam monomer and radial girders monomer, install level connection joint beam and complete the connection of two polymeric monomer modules；Level connection joint beam construction process: level connection joint beam-ends edge polishing level connection joint beam installation in position level connection joint beam welds Non-Destructive Testing and strengthens plate welding Non-Destructive Testing touch-up paint with ring beam and radial girders；
Then the two ends of level connection joint beam are carried out cutting grinding process according to measured data, weld after on-the-spot leveling again by polishing: first the distance between on-the-spot ring beam monomer and radial girders monomer is surveyed；
Install: level connection joint beam install and use tower crane or truck crane, Current Collector Sleave is hanging belt and the shackle of suitable tonnage；
Welding: the weld seam in this process is full penetration weld；Monolateral double V-groove is opened in upper lower flange, and K type groove opened by web, before welding, and first spot welding gusset outside the upper and lower flange plate in level connection joint beam two ends, it is prevented that produce welding deformation；Electrical heating preheating before weldering, after reaching preheating temperature, first by 2 welders successively to the flange plate butt weld of 4, level connection joint beam two ends, carry out diagonal bottoming, then interlocking again and be filled with capping, capping carries out back chipping repair welding back chipping weld seam at back of weld after completing；
Article 4, by 2 welder's weld horizontal tie-beam two end webs after flange plate butt weld dehydrogenation, first K type groove is carried out bottoming welding, at weld seam opposite side back chipping after bottoming, it is soldered to opposite uniform thickness in back chipping side after back chipping, then carrying out alternately being soldered to capping to complete in K type groove both sides, capping adopts electrical heating to carry out dehydrogenation immediately after completing；
Non-Destructive Testing: after dehydrogenation, polishes level connection joint beam and radial girders web coupling part weld seam, and does relevant detection according to designing requirement: 100% visual detection+100% Magnetic testing/liquid penetration examination+100% ultrasound examination；
After level connection joint beam has welded with radial girders monomer, face of weld is polishing to concordant with H profile steel, requires to detect according to NDE, then carry out the welding of stiffener again；
Connector between two Pin radial girders monomers has ring secondary beam and 3 blocks of steel linear plates；Radial girders monomer adjusts and in place good gets final product installation connecting element afterwards, and sequence of construction is: the welding of ring secondary beam ring in place secondary beam is lossless entrusts circumference panel bolt in place to connect end channel-section steel to be welded to connect circumference panel and weld the fastening of lossless trust high-strength bolt；
During ring secondary beam assembly, adopt double plate location；
Ring secondary beam and cladding boards use truck crane or 1# tower crane.
The concrete steps of this technique include: remove moulding bed superstructure, assemble protective plate & metal gauze & diffusor entry module spliced assembling platform；When removing moulding bed, first tear the crossbeam between the steel column of outer ring and shaped steel diagonal brace open, after tear the diagonal brace between Internal and external cycle steel column open, then remove the upper semisection of outer ring steel column, then remove the crossbeam between inner ring steel column and shaped steel diagonal brace, finally remove the upper semisection of inner ring steel column；After treating that the dismounting of all components is complete, the lower semisection of Internal and external cycle steel column is installed bracket, and two ring beams are installed successively, form the platform for lining of protective plate & metal gauze & diffusor entry module.
The concrete steps of this technique include: after dome body assembly completes, and complete introducing and the installment work of protective plate & metal gauze & diffusor entry module；The monomer of protective plate & metal gauze & diffusor entry module is introduced by dome ring beam monomer superjacent air space, and introducing work facility is jack and hanging belt；Introducing order is the diagonal brace between the internal removable steel plate steel column steel column of outside anistree monomer.
The concrete steps of this technique include: after dome body assembly completes, and simultaneously complete introducing and the installment work of structures between upper, annular stair & hoistable platform and Passive containment cooling system valve；Between upper, annular stair & hoistable platform and Passive containment cooling system valve, the introducing of structures selects monomer to introduce or loose mail introducing；If monomer introduces, last Pin radial girders monomer need to be reserved；If loose mail introduces, last Pin panel need to be reserved；The mode no matter introduced is loose mail or monomer, introduces work facility and is hanging belt and the jack of suitable tonnage.
Having the beneficial effect that acquired by the present invention
The present invention is directed to the assembled order of dome and be optimized design, under the premise guaranteeing safety construction, farthest improve project progress and benefit.By to dome steel structure assembly order well-planned and continue to optimize, construction quality and progress and site operation order are effectively ensured it: between dome body, upper, annular stair/hoistable platform, Passive containment cooling system valve, structures and protective plate/metal gauze/diffusor entry module all take modularization assemble theory, greatly reduce follow-up installation exercise and task difficulty；Taking symmetric mode in assembled process so that total uniform force, firm attractive in appearance, Deformation control is accurate；Modular construction theory is taked in dome spelling operation, defines parallel construction and line production, greatly improves the progress of whole engineering.The scientific and technological progress implementing the company that has been effectively promoted smoothly of dome spelling technique.
Accompanying drawing explanation
Fig. 1 is AP1000 superposed type dome spelling process chart of the present invention；
Fig. 2 is that dome ring beam monomer is with regard to bitmap；
Fig. 3 is that dome radial girders monomer is with regard to bitmap；
Fig. 4 is that dome level connection joint beam is with regard to bitmap；
Fig. 5 is protective plate & metal gauze & diffusor entry module spliced assembling platform schematic diagram；
Fig. 6 is that protective plate metal gauze diffusor entry module is with regard to bitmap；
Fig. 7 be between upper, annular stair hoistable platform and Passive containment cooling system valve structures with regard to bitmap；
Fig. 8 is ring beam monomer construction diagrams；
Fig. 9 (a) is radial girders composition diagram；
The A-A view that Fig. 9 (b) is Fig. 9 (a)；
Figure 10 is radial girders monomer construction diagrams；
Figure 11 (a) is level connection joint beam welding figure；
The B-B view that Figure 11 (b) is Figure 11 (a)；
Figure 12 (a) is panel tooling drawing；
The C-C view that Figure 12 (b) is Figure 12 (a)；
In figure: 1, moulding bed steel column supports；2, ring beam monomer；3, radial girders monomer；4, level connection joint beam；5, protective plate & metal gauze & diffusor entry module；6, upper, annular stair & hoistable platform；7, structures between Passive containment cooling system valve；8, ring beam；9, buttress brace；10, rood beam；11, concrete foundation；12, radial girders；13, ring secondary beam；14, back rib channel-section steel；15, cladding boards；16, angle cleat；17, stiffener；18, angle steel supports.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described further.
AP1000 superposed type dome adopts modularization construction process, in job shop, dome element precast is become monomer structure, and transport carries out integral assembling to scene, finally adopts the mode of integral hoisting to complete construction operation.During on-site consolidation, first lifting ring beam monomer 2, hereafter symmetrical lifting 16 Pin radial girders monomers 3, then 32 Pin level connection joint beams 4 are installed, weld job after being adjusted in place, can be started, after 8 Pin radial girders monomers 3 are in place, ring beam 8 can be installed, then carry out lifting and the assembly welding of cladding boards 15.
All in place at ring beam monomer 2, radial girders monomer 3 and level connection joint beam 4 and after forming robust structure, introduce structures 7, protective plate & metal gauze & diffusor entry module 5 between upper, annular stair & hoistable platform 6, Passive containment cooling system valve separately.The installation of accessory module is also adopted by modular mode, and piecemeal subdivision introduces assembly, reduces field operation workload.Wherein, protective plate & metal gauze & diffusor entry module 5 component is introduced by ring beam space suitable for reading, and between upper, annular stair & hoistable platform 6 and Passive containment cooling system valve, structures 7 component can pass through the headspace introducing of dome body radial girders monomer 3 or cladding boards 15.
As it is shown in figure 1, AP1000 superposed type dome spelling technique of the present invention comprises the steps:
The first step: as in figure 2 it is shown, after ring beam monomer 2 module spliced installs into, integral hoisting is to assembled moulding bed；
Ring beam monomer 2 is made up of ring beam 8 and buttress brace 9, rood beam 10, and ring beam 8 points 3 sections is prefabricated to dispatch from the factory, Assembling；After buttress brace 9, rood beam 10 shop-fabricated, loose mail dispatches from the factory, Assembling.
Ring beam monomer 2 assembling flow path:, the bolt of spot welding buttress brace 9, rood beam 10, grill support is connected ring beam 8 splicing seams welding high-strength bolt fastening anchor studs repair welding scene touch-up paint by ring beam 8 splicing welding joint group.
The buttress brace 9 of three sections of ring beams 8 and centre and rood beam 10 are first combined into an entirety on the ground, and then integral hoisting is to moulding bed.Using 12 concrete foundations 11 as the assembled moulding bed of ring beam 8 time assembled, basis is arranged with foundation outline as shown in Figure 8, and basis is 32, the periphery concrete buttress of dome integral assembling.The lifting of ring beam monomer 2 uses truck crane.
Second step: as it is shown on figure 3, according to ring beam monomer 2 seated position positioning scenarios, radial girders monomer 3 integral hoisting is to assembled moulding bed；
Radial girders monomer 3 totally 16 Pin, including radial girders 12 (W36*395), ring secondary beam 13 (W36*135), back rib channel-section steel 14 (MC8*20), (angle cleat etc. forms cladding boards 15 for PL1/2 "), channel-section steel connecting plate.
Symmetrical circumference is needed to place during monomer hoisted in position, as shown in Figure 10.The lifting of radial girders monomer 3 can use truck crane or the crawler crane of suitable tonnage.
3rd step: as shown in Figure 4, according to the seated position of ring beam monomer 2 and radial girders monomer 3, installs level connection joint beam 4 and completes the connection of two polymeric monomer modules；
Level connection joint beam 4 construction process: level connection joint beam 4 ora terminalis polishing level connection joint beam 4 installation in position level connection joint beam 4 welds Non-Destructive Testing and strengthens plate welding Non-Destructive Testing touch-up paint with ring beam 8 and radial girders 12.
Then the two ends of level connection joint beam 4 are carried out cutting grinding process according to measured data, weld after on-the-spot leveling again by polishing: first the distance between on-the-spot ring beam monomer 2 and radial girders monomer 3 is surveyed.
Install: the installation of level connection joint beam 4 can use tower crane or truck crane, and Current Collector Sleave is hanging belt and the shackle of suitable tonnage.
Welding: the weld seam in this process is full penetration weld.Monolateral double V-groove is opened in upper lower flange, and K type groove opened by web, before welding, and first spot welding gusset outside the upper and lower flange plate in level connection joint beam 4 two ends, it is prevented that produce welding deformation.Electrical heating preheating before weldering, after reaching preheating temperature, first by 2 welders successively to the flange plate butt weld of 4, level connection joint beam two ends, carry out diagonal bottoming, then interlocking again and be filled with capping, capping carries out back chipping repair welding back chipping weld seam at back of weld after completing.
Article 4, by 4 liang of end webs of 2 welder's weld horizontal tie-beams after flange plate butt weld dehydrogenation, first K type groove is carried out bottoming welding, at weld seam opposite side back chipping after bottoming, it is soldered to opposite uniform thickness in back chipping side after back chipping, then carry out alternately being soldered to capping to complete in K type groove both sides, capping adopts electrical heating to carry out dehydrogenation immediately after completing, dehydrogenation parameter is ibid.
Non-Destructive Testing: after dehydrogenation, polishes level connection joint beam 4 and radial girders web coupling part weld seam, and does relevant detection according to designing requirement: 100% visual detection+100% Magnetic testing/liquid penetration examination+100% ultrasound examination.
After level connection joint beam 4 has welded with radial girders monomer 3, face of weld is polishing to concordant with H profile steel, requires to detect according to NDE, then carry out the welding of stiffener 17 again.
Connector between two Pin radial girders monomers 3 has ring secondary beam 13 (W36*135) and 3 pieces of steel linear plates 15 (with back rib MC8*20).Radial girders monomer 3 adjusts and in place good gets final product installation connecting element afterwards, and sequence of construction is: ring secondary beam 13 ring in place secondary beam 13 welds lossless entrusts circumference panel bolt in place to connect end channel-section steel to be welded to connect circumference panel and weld the fastening of lossless trust high-strength bolt.
When ring secondary beam 13 is assembled, for ensureing the correct placement of secondary beam, time assembled, adopt double plate location.
Before panel two pieces bigger is in place, support angle steel 18 panel upper surface spot welding 3, as the support hanging panel, also serve as the distortion-free frock of welding simultaneously.
Ring secondary beam 13 and cladding boards 15 use truck crane or 1# tower crane.
4th step: as it is shown in figure 5, remove moulding bed superstructure, assemble protective plate & metal gauze & diffusor entry module 5 platform for lining；
When removing moulding bed, first tear the crossbeam between the steel column of outer ring and shaped steel diagonal brace open, after tear the diagonal brace between Internal and external cycle steel column open, then remove the upper semisection of outer ring steel column, then remove the crossbeam between inner ring steel column and shaped steel diagonal brace, finally remove the upper semisection of inner ring steel column.After treating that the dismounting of all components is complete, the lower semisection of Internal and external cycle steel column is installed bracket, and two ring beams are installed successively, thus forming the platform for lining of protective plate & metal gauze & diffusor entry module 5.
5th step: as shown in Figure 6, after dome body assembly completes, completes introducing and the installment work of protective plate & metal gauze & diffusor entry module 5；
The monomer of protective plate & metal gauze & diffusor entry module 5 is introduced by dome ring beam monomer 2 superjacent air space, and introducing work facility is jack and hanging belt.Introducing order is the diagonal brace between the internal removable steel plate steel column steel column of outside anistree monomer.
6th step: as it is shown in fig. 7, after dome body assembly completes, simultaneously complete introducing and the installment work of structures 7 between upper, annular stair & hoistable platform 6 and Passive containment cooling system valve；
Between upper, annular stair & hoistable platform 6 and Passive containment cooling system valve, the introducing of structures 7 can select monomer to introduce according to on-the-spot practice of construction progress or loose mail introducing.If monomer introduces, last Pin radial girders monomer need to be reserved；If loose mail introduces, last Pin panel need to be reserved.The mode no matter introduced is loose mail or monomer, introduces work facility and is hanging belt and the jack of suitable tonnage.
Claims (7)
1. an AP1000 superposed type dome spelling technique, it is characterized in that: AP1000 superposed type dome adopts modularization construction process, in job shop, dome element precast being become monomer structure, transport carries out integral assembling to scene, finally adopts the mode of integral hoisting to complete construction operation；During on-site consolidation, first lifting ring beam monomer (2), hereafter symmetrical lifting 16 Pin radial girders monomer (3), 32 Pin level connection joint beam (4) are then installed, weld job can be started after being adjusted in place, after 8 Pin radial girders monomer (3) are in place, ring beam (8) can be installed, then carry out lifting and the assembly welding of cladding boards (15)；All in place at ring beam monomer (2), radial girders monomer (3) and level connection joint beam (4) and after forming robust structure, introduce structures (7), protective plate & metal gauze & diffusor entry module (5) between upper, annular stair & hoistable platform (6), Passive containment cooling system valve separately；Protective plate & metal gauze & diffusor entry module (5) component is introduced by ring beam space suitable for reading, and between upper, annular stair & hoistable platform (6) and Passive containment cooling system valve, structures (7) are introduced by the headspace of dome body radial girders monomer (3) or cladding boards (15).
2. AP1000 superposed type dome spelling technique according to claim 1, it is characterised in that: the concrete steps of this technique include: after ring beam monomer (2) module spliced installs into, and integral hoisting is to assembled moulding bed；Ring beam monomer (2) is made up of ring beam (8) and buttress brace (9), rood beam (10), and ring beam (8) point 3 sections is prefabricated to dispatch from the factory, Assembling；After buttress brace (9), rood beam (10) shop-fabricated, loose mail dispatches from the factory, Assembling；Ring beam monomer (2) assembling flow path:, the bolt of spot welding buttress brace (9), rood beam (10), grill support is connected ring beam (8) splicing seams welding high-strength bolt fastening anchor studs repair welding scene touch-up paint by ring beam (8) splicing welding joint group；The buttress brace (9) of three sections of ring beams (8) and centre and rood beam (10) are first combined into an entirety on the ground, and then integral hoisting is to moulding bed；Use (12) individual concrete foundation (11) as the assembled moulding bed of ring beam (8), 32, the periphery concrete buttress that basis is dome integral assembling time assembled；The lifting of ring beam monomer (2) uses truck crane.
3. AP1000 superposed type dome spelling technique according to claim 1, it is characterized in that: the concrete steps of this technique include: according to ring beam monomer (2) seated position positioning scenarios, radial girders monomer (3) integral hoisting is to assembled moulding bed；Radial girders monomer (3) totally 16 Pin, including radial girders (12), ring secondary beam (13), back rib channel-section steel (14), cladding boards (15)；Needing symmetrical circumference to place during monomer hoisted in position, the lifting of radial girders monomer (3) can use truck crane or the crawler crane of suitable tonnage.
4. AP1000 superposed type dome spelling technique according to claim 1, it is characterized in that: the concrete steps of this technique include: according to the seated position of ring beam monomer (2) and radial girders monomer (3), level connection joint beam (4) is installed and completes the connection of two polymeric monomer modules；Level connection joint beam (4) construction process: level connection joint beam (4) ora terminalis polishing level connection joint beam (4) installation in position level connection joint beam (4) welds Non-Destructive Testing and strengthens plate welding Non-Destructive Testing touch-up paint with ring beam (8) and radial girders (12)；
Polishing: first the distance between on-the-spot ring beam monomer (2) and radial girders monomer (3) is surveyed, then according to measured data, the two ends of level connection joint beam (4) are carried out cutting grinding process, weld again after on-the-spot leveling；
Install: level connection joint beam (4) install and use tower crane or truck crane, Current Collector Sleave is hanging belt and the shackle of suitable tonnage；
Welding: the weld seam in this process is full penetration weld；Monolateral double V-groove is opened in upper lower flange, and K type groove opened by web, before welding, and first spot welding gusset outside the upper and lower flange plate in level connection joint beam (4) two ends, it is prevented that produce welding deformation；Electrical heating preheating before weldering, after reaching preheating temperature, first by 2 welders successively to the flange plate butt weld of 4, level connection joint beam two ends, carry out diagonal bottoming, then interlocking again and be filled with capping, capping carries out back chipping repair welding back chipping weld seam at back of weld after completing；
Article 4, by 2 welder's weld horizontal tie-beam (4) two end webs after flange plate butt weld dehydrogenation, first K type groove is carried out bottoming welding, at weld seam opposite side back chipping after bottoming, it is soldered to opposite uniform thickness in back chipping side after back chipping, then carrying out alternately being soldered to capping to complete in K type groove both sides, capping adopts electrical heating to carry out dehydrogenation immediately after completing；
Non-Destructive Testing: after dehydrogenation, polishes level connection joint beam (4) and radial girders web coupling part weld seam, and does relevant detection according to designing requirement: 100% visual detection+100% Magnetic testing/liquid penetration examination+100% ultrasound examination；
Face of weld is polishing to concordant with H profile steel after having welded with radial girders monomer (3) by level connection joint beam (4), requires to detect according to NDE, then carries out the welding of stiffener (17) again；
Connector between two Pin radial girders monomer (3) has ring secondary beam (13) and 3 pieces of steel linear plates (15)；Radial girders monomer (3) adjusts and in place good gets final product installation connecting element afterwards, and sequence of construction is: ring secondary beam (13) ring in place secondary beam (13) welds lossless entrusts circumference panel bolt in place to connect end channel-section steel to be welded to connect circumference panel and weld the fastening of lossless trust high-strength bolt；
When ring secondary beam (13) is assembled, adopt double plate location；Ring secondary beam (13) and cladding boards (15) use truck crane or 1# tower crane.
5. AP1000 superposed type dome spelling technique according to claim 1, it is characterised in that: the concrete steps of this technique include: remove moulding bed superstructure, assemble protective plate & metal gauze & diffusor entry module (5) platform for lining；When removing moulding bed, first tear the crossbeam between the steel column of outer ring and shaped steel diagonal brace open, after tear the diagonal brace between Internal and external cycle steel column open, then remove the upper semisection of outer ring steel column, then remove the crossbeam between inner ring steel column and shaped steel diagonal brace, finally remove the upper semisection of inner ring steel column；After treating that the dismounting of all components is complete, the lower semisection of Internal and external cycle steel column is installed bracket, and two ring beams (8) are installed successively, form the platform for lining of protective plate & metal gauze & diffusor entry module (5).
6. AP1000 superposed type dome spelling technique according to claim 1, it is characterized in that: the concrete steps of this technique include: after dome body assembly completes, complete introducing and the installment work of protective plate & metal gauze & diffusor entry module (5)；The monomer of protective plate & metal gauze & diffusor entry module (5) is introduced by dome ring beam monomer (2) superjacent air space, and introducing work facility is jack and hanging belt；Introducing order is the diagonal brace between the internal removable steel plate steel column steel column of outside anistree monomer.
7. AP1000 superposed type dome spelling technique according to claim 1, it is characterized in that: the concrete steps of this technique include: after dome body assembly completes, simultaneously complete introducing and the installment work of structures (7) between upper, annular stair & hoistable platform (6) and Passive containment cooling system valve；Between upper, annular stair & hoistable platform (6) and Passive containment cooling system valve, the introducing of structures (7) selects monomer to introduce or loose mail introducing；If monomer introduces, last Pin radial girders monomer (3) need to be reserved；If loose mail introduces, last Pin panel need to be reserved；The mode no matter introduced is loose mail or monomer, introduces work facility and is hanging belt and the jack of suitable tonnage.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113605532A (en) * | 2021-07-27 | 2021-11-05 | 中国核工业华兴建设有限公司 | Method for manufacturing ellipsoidal curved surface net rack steel template |
| CN114759357A (en) * | 2022-04-24 | 2022-07-15 | 西安电子科技大学 | Expandable mesh antenna based on dome type tensioning entirety |
| CN114986445A (en) * | 2022-06-09 | 2022-09-02 | 浙江东南网架股份有限公司 | Factory assembly method for spherical reticulated shell dome structure |
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| CN113605532A (en) * | 2021-07-27 | 2021-11-05 | 中国核工业华兴建设有限公司 | Method for manufacturing ellipsoidal curved surface net rack steel template |
| CN114759357A (en) * | 2022-04-24 | 2022-07-15 | 西安电子科技大学 | Expandable mesh antenna based on dome type tensioning entirety |
| CN114986445A (en) * | 2022-06-09 | 2022-09-02 | 浙江东南网架股份有限公司 | Factory assembly method for spherical reticulated shell dome structure |
| CN114986445B (en) * | 2022-06-09 | 2023-12-01 | 浙江东南网架股份有限公司 | Factory assembling method for spherical reticulated shell dome structure |
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| CN105714935B (en) | 2018-11-27 |
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