Template structure for the construction of nuclear island plant

Abstract

This utility model discloses a template structure for the construction of nuclear island plant buildings, relating to the field of nuclear island plant construction technology. The template structure includes a main template and a through-hole template or a sealing template. The main template has mounting through holes. The through-hole template is detachably installed on the main template at the position corresponding to the mounting through holes. The through-hole template is used to seal the mounting through holes and has through-holes that communicate with the mounting through holes, allowing through-holes of the nuclear island plant building to extend out of the main template. Alternatively, the sealing template is detachably installed on the main template at the position corresponding to the mounting through holes, and is used to seal the mounting through holes. This utility model, through its detachable through-hole template and sealing template, balances the requirements for through-hole installation with the requirement for template reuse, improving the efficiency and quality of nuclear island plant construction.

Description

Technical Field

[0001] This utility model relates to the field of nuclear island plant construction technology, and in particular to a template structure for nuclear island plant construction. Background Technology

[0002] During the construction of the nuclear island containment vessel, the construction of the inner and outer shells mainly relies on hydraulic climbing formwork and scaffolding systems. As the core protective structure of a nuclear power plant, the nuclear island containment vessel has a large number of penetrating components distributed on its inner and outer shell surfaces, which typically protrude from the concrete structure surface.

[0003] Traditional construction methods use wooden formwork systems. However, due to the spatial obstruction of through-holes, the formwork at each through-hole location cannot be reused after one concrete pour and must be destructively removed. This method not only leads to significant waste of formwork materials but also forces the construction team to re-fabricate specialized formwork for each through-hole location, causing construction interruptions and delays. More seriously, frequent formwork replacements increase the risk of construction errors, potentially affecting the dimensional accuracy and surface quality of the concrete structure. Utility Model Content

[0004] The main purpose of this invention is to propose a template structure for the construction of nuclear island buildings, which aims to balance the installation requirements of through-hole components with the requirement for template reuse, thereby improving the efficiency and quality of nuclear island building construction.

[0005] To achieve the above objectives, the present invention proposes a template structure for the construction of a nuclear island plant, comprising: The main template is provided with a mounting through hole, which extends along a first horizontal direction; A through-hole template is detachably installed on the main body template at the position corresponding to the mounting through-hole. The through-hole template is used to block the mounting through-hole, and is provided with a through-hole extending along the first horizontal direction. The through-hole communicates with the mounting through-hole, and is used for the through-hole to allow the through-hole of the nuclear island plant to extend out of the main body template along the first horizontal direction from the mounting through-hole; or... A sealing template is detachably installed on the main template at the position corresponding to the mounting through hole, and the sealing template is used to seal the mounting through hole.

[0006] In one embodiment, the main template includes an outer frame, a stiffening plate, a back rib assembly, and an installation assembly. The outer frame surrounds the periphery of the stiffening plate, the back rib assembly is installed on the stiffening plate, the stiffening plate has the installation through hole, the installation assembly surrounds the periphery of the installation through hole, and the through-part template or the sealing template is detachably installed on the installation assembly at the position corresponding to the installation through hole.

[0007] In one embodiment, the mounting assembly includes an inner frame and a plurality of bolts. The inner frame surrounds the periphery of the mounting through hole, and the periphery of the inner frame is provided with a plurality of mounting holes. The number of bolts is consistent with the number of mounting holes and is provided in a one-to-one correspondence. The through-piece template or the sealing template is detachably mounted to the inner frame at the position corresponding to the mounting through hole by the plurality of bolts.

[0008] In one embodiment, the back rib assembly includes a horizontal back rib structure and a vertical back rib structure, wherein the horizontal back rib structure and the vertical back rib structure are intersecting and are both laid on the stiffening plate.

[0009] In one embodiment, the mounting through hole is disposed between the top of the rib and the middle of the rib; a first mounting interval is disposed between the top of the mounting through hole and the top of the rib; a second mounting interval is disposed between the bottom of the mounting through hole and the bottom of the rib; and a third mounting interval is disposed between the sidewall of the mounting through hole and the sidewall of the rib; the transverse back rib structure includes a plurality of first transverse back ribs, a plurality of second transverse back ribs, and a plurality of third transverse back ribs; the plurality of first transverse back ribs are spaced apart in the first mounting interval and the second mounting interval, and both ends of each first transverse back rib along its extension direction are connected to the outer frame; the plurality of second transverse back ribs are disposed in the second mounting interval, and the plurality of second transverse back ribs are disposed close to the mounting through hole; the plurality of third transverse back ribs are spaced apart in the third mounting interval, and both ends of each third transverse back rib along its extension direction are connected to the outer frame and the inner frame, respectively.

[0010] In one embodiment, the distance between two adjacent second transverse back ribs is less than the distance between two adjacent first transverse back ribs.

[0011] In one embodiment, the vertical back rib structure includes a plurality of first vertical back ribs and a plurality of second vertical back ribs. The plurality of first vertical back ribs are spaced apart in the third mounting section, and both ends of each first vertical back rib along its extension direction are connected to the outer frame. The plurality of second vertical back ribs are spaced apart in the first mounting section and the second mounting section, and both ends of each second vertical back rib along its extension direction are connected to the outer frame and the inner frame, respectively.

[0012] In one embodiment, the through-piece template includes a first outer frame, a first panel, a through-piece sleeve, a plurality of third vertical back ribs, and a plurality of fourth horizontal back ribs. The first outer frame surrounds the outer edge of the first panel and is detachably installed inside the outer frame. The first panel has a size adapted to the mounting through hole. The through-piece through hole is opened at the center of the first panel. The through-piece sleeve is installed on the first panel corresponding to the position of the through-piece through hole. The through-piece sleeve is used for the through-piece of the nuclear island plant to extend out of the stiffener from the through-piece through hole and the mounting through hole along the first horizontal direction. The number of third vertical back ribs is the same as the number of second vertical back ribs and is arranged in a one-to-one correspondence. The number of fourth horizontal back ribs is the same as the number of third horizontal back ribs and is arranged in a one-to-one correspondence. The plurality of third vertical back ribs and the plurality of fourth horizontal back ribs are all arranged outside the through-piece sleeve.

[0013] In one embodiment, the through-piece template further includes a first lifting ring, which is mounted on any of the third vertical back ribs and is positioned near the top of the first panel.

[0014] In one embodiment, the sealing template includes a second outer frame, a second panel, a second lifting ring, a plurality of fourth vertical back ribs, and a plurality of fifth horizontal back ribs. The second outer frame surrounds the outer edge of the second panel and is detachably installed inside the outer frame. The second panel has a size adapted to the mounting through hole. The number of fourth vertical back ribs is the same as the number of second vertical back ribs and is arranged in a one-to-one correspondence. The number of fifth horizontal back ribs is the same as the number of third horizontal back ribs and is arranged in a one-to-one correspondence. The second lifting ring is installed on any of the fourth vertical back ribs.

[0015] This invention utilizes detachable through-formwork and sealing formwork, enabling formwork reuse without destructive removal after concrete pouring. This solves the problems of high material consumption and low construction efficiency associated with traditional wooden formwork systems. It offers advantages such as increased formwork reuse rate, reduced construction error risks, and improved nuclear island construction efficiency, reducing formwork material consumption by over 50% and shortening formwork replacement time in the same construction area to one-third of traditional methods. Furthermore, the modular design allows construction personnel to flexibly switch between through-formwork and sealing formwork according to project progress, balancing the needs of through-formwork installation with the requirement for formwork reuse. This avoids delays caused by through-formwork installation while ensuring the flatness and structural integrity of the concrete pouring surface, thus improving the efficiency and quality of nuclear island plant construction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of an embodiment of the template structure for constructing a nuclear island plant provided by this utility model; Figure 2 A schematic diagram of another embodiment of the template structure for the construction of a nuclear island plant provided by this utility model; Figure 3 This is a schematic diagram of the structure of an embodiment of the installation component involved in this utility model; Figure 4 This is a schematic diagram of the structure of an embodiment of the first installation section, the second installation section, and the third installation section involved in this utility model; Figure 5 This is a structural schematic diagram of an embodiment of the through-piece template involved in this utility model; Figure 6 This is a structural schematic diagram of an embodiment of the sealing template involved in this utility model.

[0018] Explanation of icon numbers: 100. Main template; 200. Through-part template; 300. Sealing template; 101. Mounting through hole; 201. Through-part via hole; 110. Outer frame; 120. Rib plate; 130. Back rib assembly; 140. Mounting assembly; 102. First mounting section; 103. Second mounting section; 104. Third mounting section; 210. First outer frame; 220. First panel; 230. Through-part sleeve; 240. Third vertical back rib; 250. Fourth horizontal... Back rib; 260, First lifting ring; 310, Second outer frame; 320, Second panel; 330, Second lifting ring; 340, Fourth vertical back rib; 350, Fifth horizontal back rib; 131, Horizontal back rib structure; 132, Vertical back rib structure; 141, Inner frame; 142, Bolt; 1311, First horizontal back rib; 1312, Second horizontal back rib; 1313, Third horizontal back rib; 1321, First vertical back rib; 1322, Second vertical back rib.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] In existing technologies, the construction of the inner and outer shells of the nuclear island containment vessel primarily relies on hydraulic climbing formwork and scaffolding systems. Because numerous through-holes protrude from the concrete structure on the surfaces of the inner and outer shells, traditional wooden formwork requires repeated processing and replacement at these locations. After each pour, the formwork in the through-hole area cannot be reused, resulting in significant material waste and extending the construction cycle due to frequent formwork disassembly and reassembly. For example, when pouring walls containing through-holes, the construction team needs to drill holes and temporarily reinforce the formwork at the corresponding locations. However, after removal, the formwork in that area is structurally damaged and cannot be reused, necessitating the fabrication of new formwork.

[0024] To address the aforementioned issues, a reusable formwork system capable of accommodating the presence of through-holes is needed. Considering that through-holes may be installed or temporarily blocked at different construction stages, the formwork structure must possess flexible switching capabilities. Analysis revealed that pre-setting standardized installation holes in the main formwork and designing matching detachable modular components can both meet the installation requirements of through-holes and seal the holes when they are not needed. This modular design approach avoids the scrapping of the entire formwork and enables multiple uses of the formwork in critical areas.

[0025] Therefore, in order to solve this technical problem, this utility model proposes a template structure for the construction of nuclear island plant buildings.

[0026] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of this utility model, the template structure for constructing a nuclear island plant includes a main template 100, a through-hole template 200, or a sealing template 300. The main template 100 is provided with an installation through-hole 101 extending along a first horizontal direction. The through-hole template 200 is detachably installed on the main template 100 at a position corresponding to the installation through-hole 101. The through-hole template 200 is used to seal the installation through-hole 101, and the through-hole template 200 is provided with a through-hole 201 extending along the first horizontal direction. The through-hole 201 communicates with the installation through-hole 101, and the through-hole 201 is used for the through-hole of the nuclear island plant to extend out of the main template 100 along the first horizontal direction from the installation through-hole 101. Alternatively, the sealing template 300 is detachably installed on the main template 100 at a position corresponding to the installation through-hole 101, and the sealing template 300 is used to seal the installation through-hole 101.

[0027] It should be noted that the main template 100 is provided with a mounting through hole 101 extending along the first horizontal direction. The through-part template 200 is detachably installed at the mounting through hole 101, and has a through-part through hole 201 communicating with the mounting through hole 101, allowing the through-part to pass horizontally. When the through-part is not required, the sealing template 300 can replace the through-part template 200 to close the mounting through hole 101.

[0028] The first horizontal direction refers to Figure 3The thickness direction of the stiffening plate 120 is the front-to-back direction perpendicular to the plane where the stiffening plate 120 is located. The main formwork 100 refers to the foundation formwork structure that bears the load of concrete pouring. It can be constructed by welding steel plates, with the installation through-hole 101 opened horizontally. Its size can be adjusted according to the diameter of the through-piece. The function of the installation through-hole 101 is to provide a pre-set channel for the through-piece and also serve as an installation interface for modular components. The through-piece formwork 200 refers to a replacement component with through holes. It can be a combination structure of a ring-shaped steel plate and a sleeve, with the sleeve axis aligned with the installation through-hole 101 to ensure accurate positioning of the through-piece. The sealing formwork 300 refers to a flat plate component without through holes. It can be made of a steel plate matching the installation through-hole 101 and sealed by bolts 142.

[0029] More specifically, during the concrete pouring stage, if the wall requires pre-embedded through-holes, the through-hole template 200 is installed at the installation through-hole 101 position of the main template 100. The through-hole extends horizontally out of the template system through the through-hole 201, and the main template 100 will not be damaged when the through-hole template 200 is removed after pouring. When subsequent construction at the same location does not require the through-hole, the installation through-hole 101 is sealed with a sealing template 300, and the main template 100 can be reused intact. The two template components are connected by bolts 142 for quick replacement, and the connection area is equipped with a reinforced frame to ensure sealing and structural strength.

[0030] Compared to existing technologies, traditional wooden formwork requires a complete opening at the through-hole location and cannot be restored. This solution, however, uses pre-set standardized installation holes and modular replacement components to allow the same location to accommodate through-hole installations while also restoring the formwork surface to a complete state. Existing technologies require custom-made formwork for each construction project; this solution, through its detachable design, concentrates customization needs on small replacement components, significantly reducing the wastage rate of the main formwork.

[0031] The technical solution provided by this utility model utilizes detachable through-formwork 200 and sealing formwork 300, enabling formwork reuse without destructive removal after concrete pouring. This solves the problems of high material consumption and low construction efficiency associated with traditional wooden formwork systems. It offers advantages such as increased formwork reuse rate, reduced construction error risks, and improved nuclear island construction efficiency, reducing formwork material consumption by more than 50% and shortening formwork replacement time in the same construction area to one-third of traditional methods. Furthermore, the modular design allows construction personnel to flexibly switch between through-formwork 200 and sealing formwork 300 according to project progress, balancing the requirements for through-formwork installation with the need for formwork reuse. This avoids delays caused by through-formwork installation while ensuring the flatness and structural integrity of the concrete pouring surface, thus improving the efficiency and quality of nuclear island plant construction.

[0032] Please continue reading. Figures 1 to 3In an embodiment of this utility model, the main template 100 includes an outer frame 110, a stiffener 120, a back rib assembly 130, and an installation assembly 140. The outer frame 110 surrounds the periphery of the stiffener 120, the back rib assembly 130 is installed on the stiffener 120, the stiffener 120 has an installation through hole 101, the installation assembly 140 surrounds the periphery of the installation through hole 101, and the through template 200 or the sealing template 300 is detachably installed on the installation assembly 140 at the position corresponding to the installation through hole 101.

[0033] It should be noted that the outer frame 110 refers to the supporting frame surrounding the stiffening plate 120, which can be formed by welding steel profiles or connecting with bolts 142, and is used to fix the stiffening plate 120 and maintain the overall structural stability of the main formwork 100. The stiffening plate 120 refers to the plate that constitutes the core bearing surface of the main formwork 100, which can be made of steel plate or composite plate, and is used to provide the opening position of the installation through hole 101 and support the concrete pouring load. The back rib assembly 130 refers to the reinforcing structure set on the back of the stiffening plate 120, which can be made of steel beams or channel steel arranged horizontally and vertically, and is used to enhance the bending stiffness and deformation resistance of the stiffening plate 120. The mounting assembly 140 refers to the connecting structure set around the edge of the installation through hole 101, which can be a ring frame with bolt holes 142, and is used to provide a detachable mounting interface for the through-part formwork 200 or the sealing formwork 300.

[0034] More specifically, the outer frame 110 is connected by welding or bolts 142 to form a closed frame, and the stiffening plate 120 is fixed to the inner side of the outer frame 110 and has mounting through holes 101. The back rib assembly 130 is fixed to the back of the stiffening plate 120 by welding or bolts 142 to form a grid-like reinforcing structure to distribute the load. The mounting assembly 140 is fixed to the edge of the mounting through hole 101 by welding or bolts 142, and bolt holes 142 are provided on its annular frame. The through-piece template 200 or the sealing template 300 is connected to the mounting assembly 140 by bolts 142 to achieve quick assembly and disassembly. When a through-piece needs to be installed, the through-piece template 200 is aligned with the mounting through hole 101 and fixed by bolts 142; when a through-piece is not needed, the sealing template 300 is used to close the mounting through hole 101.

[0035] This embodiment enables the rapid replacement of the through-piece template 200 or the sealing template 300 without damaging the integrity of the main template 100, reducing the number of template replacements and material waste. At the same time, through the combined design of the back rib assembly 130 and the installation assembly 140, the structural stability of the template is ensured during the concrete pouring process, improving construction efficiency and reducing construction costs.

[0036] Please continue reading. Figures 1 to 3In an embodiment of this utility model, the mounting component 140 includes an inner frame 141 and a plurality of bolts 142. The inner frame 141 surrounds the periphery of the mounting through hole 101. The periphery of the inner frame 141 is provided with a plurality of mounting holes. The number of bolts 142 is consistent with the number of mounting holes and is set one-to-one. The through-part template 200 or the sealing template 300 is detachably mounted to the inner frame 141 at the position corresponding to the mounting through hole 101 by the plurality of bolts 142.

[0037] It should be noted that the inner frame 141 refers to the annular support structure surrounding the edge of the mounting through hole 101. Specifically, it can be fixed to the stiffening plate 120 by welding or bolts 142, providing a mounting base for the detachable template. Bolts 142 are threaded fasteners, typically made of high-strength carbon steel, which are screwed into the mounting holes to allow for quick assembly and disassembly of the template. Mounting holes are evenly distributed holes around the perimeter of the inner frame 141, which can be machined using drilling or stamping processes. Their positions match the number of bolts 142 to ensure even stress distribution.

[0038] More specifically, the inner frame 141 forms a stable support interface after being fixed to the edge of the mounting through hole 101, with multiple mounting holes evenly distributed circumferentially. When it is necessary to install the through-piece template 200 or the sealing template 300, the operator aligns the template with the mounting through hole 101, uses the corresponding number of bolts 142 to pass through the pre-drilled holes on the edge of the template, and screws them into the mounting holes of the inner frame 141. After the bolts 142 are tightened, a reliable connection is formed, which can withstand the lateral pressure during concrete pouring. The template can be separated by reversing the operation during disassembly, allowing for reuse.

[0039] This embodiment effectively solves the problem of low template reuse rate. It enables rapid template replacement through standardized 142 bolt connection interfaces, reducing template scrapping due to changes in the position of through-pieces, significantly lowering construction costs and shortening the construction period. The modular design also improves on-site assembly efficiency, adapting to the complex and ever-changing construction needs of the nuclear island plant.

[0040] Please continue reading. Figures 1 to 3 In an embodiment of this utility model, the back rib assembly 130 includes a horizontal back rib structure 131 and a vertical back rib structure 132. The horizontal back rib structure 131 and the vertical back rib structure 132 are intersecting and are laid on the stiffening plate 120.

[0041] It should be noted that the horizontal back rib structure 131 refers to the support members arranged in the horizontal direction, which can be implemented by welding I-beams or channel steel to form a grid-like frame, used to distribute the concrete pouring pressure borne by the stiffening slab 120. The vertical back rib structure 132 refers to the support members arranged in the vertical direction, which can be implemented by connecting angle steel or square tubes with bolts 142 to form a longitudinal support system, used to enhance the overall bending stiffness of the formwork. The intersection of the horizontal back rib structure 131 and the vertical back rib structure 132 can form a two-way force system, transferring loads through the intersection nodes and avoiding local stress concentration that could lead to formwork deformation.

[0042] More specifically, the transverse back rib structure 131 and the vertical back rib structure 132 form a grid-like support layout on the surface of the stiffening plate 120. The transverse back ribs are arranged at intervals in the horizontal direction and are perpendicularly connected to the vertical back ribs. For example, the transverse back ribs can be spaced 300-500 mm apart, and the vertical back ribs can be spaced 400-600 mm apart. The two are fixed together by welding or bolts 142 to form a rigid frame. During the concrete pouring process, the transverse back ribs bear the main horizontal load, and the vertical back ribs suppress the vertical deflection of the formwork. The two work together to maintain the flatness of the stiffening plate 120 and prevent cracking or misalignment around the installation through hole 101 due to uneven stress.

[0043] This embodiment solves the problem of repeated replacements of traditional formwork due to insufficient support. By using a two-way back rib structure, the overall rigidity and stability of the formwork are enhanced, enabling it to withstand the complex loads brought about by multiple concrete pours and the installation of through-hole components, thereby extending the service life of the formwork and reducing the frequency of maintenance during construction.

[0044] Please continue reading. Figures 1 to 3 And see Figure 4In an embodiment of this utility model, a mounting through hole 101 is disposed between the top of the rib 120 and the middle of the rib 120; a first mounting interval 102 is disposed between the top of the mounting through hole 101 and the top of the rib 120, a second mounting interval 103 is disposed between the bottom of the mounting through hole 101 and the bottom of the rib 120, and a third mounting interval 104 is disposed between the sidewall of the mounting through hole 101 and the sidewall of the rib 120; the transverse back rib structure 131 includes a plurality of first transverse back ribs 1311, a plurality of second transverse back ribs 1312 and a plurality of third transverse back ribs 1312. Rack 1313, a plurality of first transverse back ribs 1311 are spaced apart in the first mounting section 102 and the second mounting section 103, and both ends of each first transverse back rib 1311 along its extension direction are connected to the outer frame 110; a plurality of second transverse back ribs 1312 are disposed in the second mounting section 103, and the plurality of second transverse back ribs 1312 are disposed close to the mounting through hole 101; a plurality of third transverse back ribs 1313 are spaced apart in the third mounting section 104, and both ends of each third transverse back rib 1313 along its extension direction are connected to the outer frame 110 and the inner frame 141 respectively.

[0045] It should be noted that the mounting through hole 101 refers to the hole structure on the stiffening plate 120 for the through member to pass through. Specifically, it can be a rectangular or circular hole, positioned between the top and middle of the stiffening plate 120 to accommodate the installation requirements of the through member. The first installation section 102 refers to the area between the top of the mounting through hole 101 and the top of the stiffening plate 120; the second installation section 103 refers to the area between the bottom of the mounting through hole 101 and the bottom of the stiffening plate 120; and the third installation section 104 refers to the area between the side wall of the mounting through hole 101 and the side wall of the stiffening plate 120. These section divisions are used to optimize the layout of the back rib structure. The first transverse back rib 1311 refers to the support member horizontally positioned in the first installation section 102 and the second installation section 103, connected at both ends to the outer frame 110 to enhance overall rigidity. The second transverse back rib 1312 refers to the support member positioned in the second installation section 103 and close to the mounting through hole 101, used to locally strengthen the load-bearing capacity of the bottom area of ​​the through hole. The third transverse back rib 1313 refers to the support member set in the third installation section 104 and connected to the outer frame 110 and the inner frame 141 at both ends, which is used to balance the stress distribution in the through hole sidewall area.

[0046] More specifically, the mounting through-hole 101 of the stiffening plate 120 is divided into three mounting sections: top, bottom, and sidewall. Different functional transverse back ribs are arranged in each section. The first transverse back ribs 1311 are evenly distributed in the first mounting section 102 and the second mounting section 103, forming continuous support through fixation to the outer frame 110 at both ends. The second transverse back ribs 1312 are densely arranged near the through-hole in the second mounting section 103 to cope with the concentrated load generated by the through-hole installation in this area. The third transverse back ribs 1313 are arranged at intervals in the third mounting section 104, connecting the outer frame 110 and the inner frame 141 to ensure the stability of the through-hole sidewall area. This segmented, differentiated back rib structure can adapt to the asymmetrical load brought about by the through-hole installation, while avoiding localized strength weakening caused by the presence of the through-hole.

[0047] This embodiment can effectively solve the problem of low template reuse rate caused by the installation of through-pieces. By optimizing the back rib layout, the template can maintain structural integrity after multiple disassemblies and reassemblies, reducing the number of template replacements during construction, thereby reducing material consumption and shortening the construction period.

[0048] Please continue reading. Figure 4 In an embodiment of this utility model, the distance between two adjacent second transverse back ribs 1312 is less than the distance between two adjacent first transverse back ribs 1311.

[0049] It should be noted that the second transverse back rib 1312 refers to the transverse support member set in the second installation section 103 and close to the installation through hole 101. Specifically, it can be formed by welding I-beams or channel steel, and is used to enhance the local load-bearing capacity of the bottom area of ​​the installation through hole 101. The first transverse back rib 1311 refers to the transverse support member set in the first installation section 102 and the second installation section 103. Specifically, it can be made of equilateral angle steel and fixed by bolts 142, and is used to maintain the overall structural strength of the top and bottom of the stiffener 120. By reducing the spacing of the second transverse back ribs 1312, a higher density support network can be formed in the through-hole installation area, thereby compensating for the structural strength loss caused by the installation through hole 101.

[0050] More specifically, after the mounting through-hole 101 is opened between the top and middle of the stiffening slab 120, a second installation interval 103 is formed between the bottom of the mounting through-hole 101 and the bottom of the stiffening slab 120. The second transverse back ribs 1312 are concentrated in this interval and close to the edge of the mounting through-hole 101, with the adjacent spacing set to be smaller than the conventional spacing of the first transverse back ribs 1311. This differentiated arrangement significantly increases the support density in the area surrounding the mounting through-hole 101, effectively suppressing formwork deformation during concrete pouring. At the same time, the first transverse back ribs 1311 maintain a larger spacing in non-critical areas, which satisfies the overall stiffness requirements while avoiding excessive material usage.

[0051] This embodiment solves the problem of frequent replacements caused by insufficient support in the through-piece area of ​​traditional formwork. The differentiated back rib spacing design provides targeted reinforcement to the formwork in areas with dense through-pieces, significantly extending the number of times the formwork can be reused and reducing material waste. At the same time, this structural optimization avoids the increase in overall weight caused by local reinforcement, maintaining the operability of the formwork system.

[0052] Please continue reading. Figure 4 In an embodiment of this utility model, the vertical back rib structure 132 includes a plurality of first vertical back ribs 1321 and a plurality of second vertical back ribs 1322. The plurality of first vertical back ribs 1321 are spaced apart in the third mounting section 104, and both ends of each first vertical back rib 1321 along its extension direction are connected to the outer frame 110. The plurality of second vertical back ribs 1322 are spaced apart in the first mounting section 102 and the second mounting section 103, and both ends of each second vertical back rib 1322 along its extension direction are connected to the outer frame 110 and the inner frame 141, respectively.

[0053] It should be noted that the first vertical back rib 1321 refers to a support member arranged in the vertical direction. Specifically, it can be a channel steel or an I-beam welded or bolted to the outer frame 110 to enhance the bending stiffness of the stiffening plate 120 in the third installation section 104. The second vertical back rib 1322 refers to a support member arranged in the vertical direction. Specifically, it can be a channel steel or an I-beam fixed at one end to the outer frame 110 and at the other end to the inner frame 141 to transfer the load of the mounting through hole 101 area to the outer frame 110 and the inner frame 141, preventing the stiffening plate 120 from deforming due to local load concentration.

[0054] More specifically, in the third installation section 104 of the stiffening slab 120, multiple first vertical back ribs 1321 form a continuous support structure with the outer frame 110, ensuring the stability of the sidewalls of the stiffening slab 120 during concrete pouring. In the first installation section 102 and the second installation section 103, the second vertical back ribs 1322, by connecting the outer frame 110 and the inner frame 141, disperse the lateral pressure generated around the mounting through hole 101 by the through member or sealing template 300 to the outer frame 110, while simultaneously constraining the displacement of the edge of the mounting through hole 101 through the inner frame 141. Thus, the vertical back rib structure 132, through its zoned arrangement, forms a multi-level force transmission path, ensuring the overall rigidity of the template under complex loads.

[0055] This embodiment effectively solves the problem of insufficient local rigidity of the template caused by the installation of through-parts, reduces the cumulative deformation of the template during repeated use, thereby extending the template life and reducing the replacement frequency.

[0056] Please continue reading. Figure 1 and Figure 3 And see Figure 5 In an embodiment of this utility model, the through-piece template 200 includes a first outer frame 210, a first panel 220, a through-piece sleeve 230, a plurality of third vertical back ribs 240, and a plurality of fourth horizontal back ribs 250. The first outer frame 210 surrounds the outer edge of the first panel 220 and is detachably installed inside the outer frame 110. The first panel 220 has a size adapted to the mounting through hole 101. A through-piece through hole 201 is provided at the center of the first panel 220, and the through-piece sleeve 230 corresponds to the through-piece through hole. Position 201 is installed on the first panel 220. The through sleeve 230 is used for the through parts of the nuclear island plant to extend out of the stiffener 120 from the through hole 201 and the mounting through hole 101 in the first horizontal direction. The number of third vertical back ribs 240 is the same as the number of second vertical back ribs 1322 and they are set one-to-one. The number of fourth horizontal back ribs 250 is the same as the number of third horizontal back ribs 1313 and they are set one-to-one. Multiple third vertical back ribs 240 and multiple fourth horizontal back ribs 250 are all set outside the through sleeve 230.

[0057] It should be noted that the first outer frame 210 refers to a rectangular frame structure formed by welding metal profiles, specifically using channel steel or angle steel splicing. Its four corners are connected to the outer frame 110 by bolts 142 to fix the edge area of ​​the first panel 220. The first panel 220 refers to a steel plate with a thickness of 10-15 mm, specifically using laser cutting to form through holes 201. Its edges are welded to the first outer frame 210 to form an integral structure, used to seal the installation through hole 101 and transmit concrete pouring pressure. The through sleeve 230 refers to a seamless steel pipe with a length of 300-500 mm, specifically using flange welding to fix it to the through hole 201 of the first panel 220, used to guide the through part to pass through the template structure horizontally. The third vertical back rib 240 and the fourth horizontal back rib 250 refer to support members with H-shaped cross-sections, specifically using welding to form a grid distribution, used to enhance the deformation resistance of the through sleeve 230 area.

[0058] More specifically, when the through-hole needs to be installed, the first outer frame 210 is fixed to the outer frame 110 of the main template 100 with bolts 142, so that the first panel 220 completely covers the installation through hole 101. The through-hole sleeve 230 and the first panel 220 form a concentric circle structure, forming a horizontal channel during concrete pouring. The third vertical back rib 240 corresponds to the second vertical back rib 1322 of the main template 100, and the fourth horizontal back rib 250 corresponds to the third horizontal back rib 1313 of the main template 100, thereby forming a cross-support grid around the through-hole sleeve 230. This structure allows the template in the through-hole area to be disassembled independently, and the template can be reused by removing the first outer frame 210 after the concrete pouring is completed.

[0059] This embodiment achieves standardized prefabrication and rapid assembly / disassembly of the through-piece formwork 200, reducing the number of formwork replacements by more than 80%. The cross-distributed back rib structure increases the rigidity of the formwork in the through-piece area by 40%, effectively preventing local deformation during concrete pouring. The modular design reduces the installation time of a single through-piece formwork 200 to 15 minutes, significantly improving construction efficiency.

[0060] Please continue reading. Figure 5 In an embodiment of this utility model, the through-piece template 200 further includes a first lifting ring 260, which is installed on any third vertical back rib 240 and is positioned near the top of the first panel 220.

[0061] It should be noted that the first lifting ring 260 refers to a metal ring structure used for lifting operations. Specifically, it can be fixed to the third vertical back rib 240 by welding or bolts 142. Its function is to provide a force point for the lifting of the through-piece template 200. The third vertical back rib 240 refers to a support member arranged vertically, specifically made of channel steel or I-beams, used to enhance the longitudinal rigidity of the through-piece template 200. The top of the first panel 220 refers to the upper vertical area of ​​the panel, which is close to the concrete pouring surface after the template is installed, facilitating quick positioning during lifting operations.

[0062] More specifically, during the assembly of the through-piece template 200, the third vertical back rib 240 is arranged vertically and forms a mesh support structure with the fourth horizontal back rib 250. The first lifting ring 260 is fixed to the upper region of the third vertical back rib 240, positioning it close to the top edge of the first panel 220. When the through-piece template 200 needs to be installed or disassembled, the lifting equipment uses the first lifting ring 260 to lift it. Because the lifting ring is close to the top center of gravity area of ​​the template, it can prevent the template from tilting or swaying during lifting.

[0063] In some specific embodiments, the first lifting ring 260 can be set at a position of about 200mm to 500mm from the top edge of the panel on the third vertical back rib 240, and fixed by double-sided welding. The cross-sectional dimensions of the third vertical back rib 240 can be selected as a rectangular steel tube with a height of 100mm and a width of 50mm, and its spacing can be set to 600mm to 1200mm according to the template size.

[0064] This embodiment enables rapid positioning and reliable hoisting of the through-piece template 200, reduces the risk of deformation caused by uneven force during template disassembly, reduces the impact of hoisting operations on template connectors, and improves template reuse rate.

[0065] Please continue reading. Figure 2 and Figure 3And see Figure 6 In an embodiment of this utility model, the sealing template 300 includes a second outer frame 310, a second panel 320, a second lifting ring 330, a plurality of fourth vertical back ribs 340 and a plurality of fifth horizontal back ribs 350. The second outer frame 310 surrounds the outer edge of the second panel 320 and is detachably installed inside the outer frame 110. The second panel 320 has a size that matches the mounting through hole 101. The number of fourth vertical back ribs 340 is the same as the number of second vertical back ribs 1322 and is set in a one-to-one correspondence. The number of fifth horizontal back ribs 350 is the same as the number of third horizontal back ribs 1313 and is set in a one-to-one correspondence. The second lifting ring 330 is installed on any of the fourth vertical back ribs 340.

[0066] It should be noted that the second outer frame 310 refers to a rectangular frame structure formed by welding steel profiles, specifically using channel steel or angle steel splicing, used to fix the edges of the second panel 320 and provide an installation interface. The second panel 320 refers to a steel plate with a thickness of 12-18 mm, specifically made of Q235B steel cut to size, its dimensions matching the mounting through hole 101 to achieve a sealing function. The second lifting ring 330 refers to a lifting ring with a threaded connection, specifically fixed to the fourth vertical back rib 340 with M20 bolts 142, used to assist in lifting operations. The fourth vertical back rib 340 refers to support components arranged in the vertical direction, specifically using 80mm*40mm rectangular steel pipes, the number corresponding to the second vertical back rib 1322 of the main template 100 to achieve structural symmetry. The fifth horizontal back rib 350 refers to support components arranged in the horizontal direction, specifically using 60mm*30mm rectangular steel pipes, the number corresponding to the third horizontal back rib 1313 of the main template 100 to form a grid-like support system.

[0067] More specifically, when it is necessary to seal the installation through-hole 101, the operator connects the second outer frame 310 to the outer frame 110 using bolts 142, so that the second panel 320 completely covers the installation through-hole 101. The fourth vertical back rib 340 and the second vertical back rib 1322 of the main template 100 form a continuous support surface in space. The fifth horizontal back rib 350 and the end of the third horizontal back rib 1313 are connected by flanges to form a complete back rib grid. The second lifting ring 330 is set 200mm from the top of the panel to facilitate vertical lifting by the crane hook. After installation, the back rib system of the sealing template 300 and the back rib assembly 130 of the main template 100 jointly bear the lateral pressure during concrete pouring.

[0068] This embodiment solves the problem of low reusability of traditional sealing templates 300. Through standardized interface design and matching arrangement of the back rib system, the sealing template 300 can be disassembled and reassembled multiple times without damaging the main structure. The modular construction method reduces on-site processing, the reasonable arrangement of lifting rings improves construction safety, and the continuous design of the back rib system effectively prevents template deformation during concrete pouring.

[0069] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A formwork structure for nuclear island plant building, characterized by, include: The main template is provided with a mounting through hole, which extends along a first horizontal direction; A through-hole template is detachably installed on the main body template at the position corresponding to the mounting through hole. The through-hole template is used to block the mounting through hole, and the through-hole template is provided with a through-hole extending along the first horizontal direction. The through-hole communicates with the mounting through hole, and the through-hole is used to allow the through-hole of the nuclear island plant to extend out of the main body template along the first horizontal direction from the mounting through hole. or, A sealing template is detachably installed on the main template at the position corresponding to the mounting through hole, and the sealing template is used to seal the mounting through hole.

2. The formwork structure for nuclear island plant building according to claim 1, wherein, The main template includes an outer frame, stiffeners, back ribs, and mounting components. The outer frame surrounds the periphery of the stiffeners, the back ribs are mounted on the stiffeners, the stiffeners have mounting through holes, the mounting components surround the periphery of the mounting through holes, and the through-part template or the sealing template is detachably mounted on the mounting components at the position corresponding to the mounting through holes.

3. The template structure for constructing a nuclear island plant as described in claim 2, characterized in that, The mounting assembly includes an inner frame and a plurality of bolts. The inner frame surrounds the periphery of the mounting through hole, and the periphery of the inner frame is provided with a plurality of mounting holes. The number of bolts is consistent with the number of mounting holes and is set one-to-one. The through-part template or the sealing template is detachably mounted to the inner frame at the position corresponding to the mounting through hole by the plurality of bolts.

4. The template structure for constructing a nuclear island plant as described in claim 3, characterized in that, The back rib assembly includes a horizontal back rib structure and a vertical back rib structure, the horizontal back rib structure and the vertical back rib structure are intersecting and are both laid on the stiffening plate.

5. The template structure for constructing a nuclear island plant as described in claim 4, characterized in that, The mounting through hole is disposed between the top of the rib and the middle of the rib; a first mounting interval is disposed between the top of the mounting through hole and the top of the rib; a second mounting interval is disposed between the bottom of the mounting through hole and the bottom of the rib; and a third mounting interval is disposed between the sidewall of the mounting through hole and the sidewall of the rib; the transverse back rib structure includes multiple first transverse back ribs, multiple second transverse back ribs, and multiple third transverse back ribs; multiple first transverse back ribs are spaced apart in the first mounting interval and the second mounting interval, and both ends of each first transverse back rib along its extension direction are connected to the outer frame; multiple second transverse back ribs are disposed in the second mounting interval, and multiple second transverse back ribs are disposed close to the mounting through hole; multiple third transverse back ribs are spaced apart in the third mounting interval, and both ends of each third transverse back rib along its extension direction are connected to the outer frame and the inner frame, respectively.

6. The template structure for nuclear island plant construction as described in claim 5, characterized in that, The distance between two adjacent second transverse back ribs is less than the distance between two adjacent first transverse back ribs.

7. The template structure for nuclear island plant construction as described in claim 5, characterized in that, The vertical back rib structure includes multiple first vertical back ribs and multiple second vertical back ribs. The multiple first vertical back ribs are spaced apart in the third installation section, and both ends of each first vertical back rib along its extension direction are connected to the outer frame. The multiple second vertical back ribs are spaced apart in the first installation section and the second installation section, and both ends of each second vertical back rib along its extension direction are connected to the outer frame and the inner frame, respectively.

8. The template structure for nuclear island plant construction as described in claim 7, characterized in that, The through-piece template includes a first outer frame, a first panel, a through-piece sleeve, multiple third vertical back ribs, and multiple fourth horizontal back ribs. The first outer frame surrounds the outer edge of the first panel and is detachably installed inside the outer frame. The first panel has a size adapted to the mounting through hole. The through-piece through hole is opened at the center of the first panel. The through-piece sleeve is installed on the first panel corresponding to the position of the through-piece through hole. The through-piece sleeve is used for the through-piece of the nuclear island plant to extend out of the stiffener from the through-piece through hole and the mounting through hole along the first horizontal direction. The number of third vertical back ribs is the same as the number of second vertical back ribs and is set one-to-one. The number of fourth horizontal back ribs is the same as the number of third horizontal back ribs and is set one-to-one. Multiple third vertical back ribs and multiple fourth horizontal back ribs are all set outside the through-piece sleeve.

9. The template structure for nuclear island plant construction as described in claim 8, characterized in that, The through-piece template also includes a first lifting ring, which is installed on any of the third vertical back ribs and is positioned near the top of the first panel.

10. The template structure for constructing a nuclear island plant as described in claim 7, characterized in that, The sealing template includes a second outer frame, a second panel, a second lifting ring, multiple fourth vertical back ribs, and multiple fifth horizontal back ribs. The second outer frame surrounds the outer edge of the second panel and is detachably installed inside the outer frame. The second panel has a size adapted to the mounting through hole. The number of fourth vertical back ribs is the same as the number of second vertical back ribs and is set in a one-to-one correspondence. The number of fifth horizontal back ribs is the same as the number of third horizontal back ribs and is set in a one-to-one correspondence. The second lifting ring is installed on any of the fourth vertical back ribs.

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