Nuclear engineering stainless steel faced composite wall and construction method thereof

Abstract

The present application relates to the technical fields of modular design and construction of nuclear engineering civil engineering, in particular to a kind of nuclear engineering stainless steel covering composite wall and its construction method.The nuclear engineering stainless steel covering composite wall includes: wall stainless steel covering, with the inner side steel mesh of steel reinforcement cage is poured to form first prefabricated concrete leaf plate with stainless steel covering in advance;The outer side steel mesh of steel reinforcement cage is poured in second prefabricated concrete leaf plate;First prefabricated concrete leaf plate with stainless steel covering is connected with second prefabricated concrete leaf plate to form composite wall prefabricated part with stainless steel covering by steel reinforcement cage.The nuclear engineering stainless steel covering composite wall provided by the present application can not only reduce the workload of site welding and weld inspection, eliminate formwork support, but also reduce the dosage of ultra-low chloride concrete, improve the construction efficiency of nuclear engineering stainless steel covering wall and save the cost.

Description

Technical Field

[0001] This invention relates to the field of modular design and construction technology for nuclear engineering civil engineering, specifically to a stainless steel clad composite wall for nuclear engineering and its construction method. Background Technology

[0002] Currently, in the field of nuclear engineering civil construction, stainless steel cladding is mainly installed on-site using the post-installation method. After the concrete wall is constructed, individual stainless steel cladding pieces are installed and welded together to form a whole. This results in a large workload for on-site welding and weld inspection of the steel cladding, and makes it difficult to guarantee quality. Moreover, the walls connected to the stainless steel cladding are mainly constructed using the traditional method of on-site concrete pouring. This involves a large amount of formwork erection and dismantling work, consuming a lot of labor and materials, resulting in low construction efficiency and a poor construction environment.

[0003] Some in the industry also use the pre-applied method, where the steel cladding is pre-welded as a whole and lined inside the formwork. This method reduces on-site welding and weld inspection of the steel cladding, but still requires a lot of formwork erection and dismantling, as well as a lot of rebar tying work. Furthermore, due to the relatively low rigidity of the steel cladding and the difficulty in controlling deformation, and because of the special requirements of the steel cladding, the wall needs to use ultra-low chlorine concrete mixed with demineralized water, which significantly increases the cost.

[0004] The industry has also proposed stainless steel plate concrete structures, but these require thicker stainless steel plates and a large amount of ultra-low chlorine concrete, making them very expensive.

[0005] To address the aforementioned issues, improve the construction efficiency of stainless steel clad walls in nuclear engineering projects, reduce on-site work such as steel cladding welding and weld inspection, formwork erection and dismantling, and rebar tying, while also reducing the amount of ultra-low chlorine concrete used, saving costs, and promoting the industrialization of nuclear engineering civil construction, it is necessary to invent a stainless steel clad composite wall system and construction method for nuclear engineering projects. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology of stainless steel clad wall in nuclear engineering, which involves a large amount of on-site welding and weld inspection, as well as the large amount of ultra-low chlorine concrete used. The invention provides a stainless steel clad composite wall for nuclear engineering and its construction method that can reduce the workload of on-site welding and weld inspection, eliminate the need for formwork support, and reduce the amount of ultra-low chlorine concrete used.

[0007] To solve the above-mentioned technical problems, the present invention provides a stainless steel clad composite wall for nuclear engineering, comprising:

[0008] The first precast concrete blade with stainless steel cladding is connected to the second precast concrete blade via a steel reinforcement cage.

[0009] The stainless steel cladding of the wall is precast together with the inner steel mesh of the steel cage to form the first precast concrete leaf slab with stainless steel cladding.

[0010] The outer steel mesh of the steel cage is cast into the second precast concrete leaf slab.

[0011] The first precast concrete blade with stainless steel cladding is connected to the second precast concrete blade with a steel cage to form a composite wall precast component with stainless steel cladding.

[0012] Optionally, the stainless steel cladding of the wall includes a cladding panel and horizontal and vertical stiffening ribs disposed on the cladding panel. The cladding panel and the horizontal and vertical stiffening ribs thereon, together with the inner steel mesh, are cast into the first precast concrete leaf slab with stainless steel cladding.

[0013] Optionally, the reinforcing cage further includes tie bars, which are connected between the inner reinforcing mesh and the outer reinforcing mesh. One end of the tie bar along the thickness direction is cast together with the inner reinforcing mesh into the first precast concrete leaf slab with stainless steel cladding, and the other end is cast together with the outer reinforcing mesh into the second precast concrete leaf slab, so as to connect the first and second precast concrete leaf slabs with stainless steel cladding to the reinforcing cage to form an integral precast composite wall component with stainless steel cladding.

[0014] Optionally, unit connectors are fixedly provided on both sides of the stainless steel cladding of the wall along its length, and the unit connectors are adapted to connect two adjacent stainless steel claddings of the wall.

[0015] Optionally, a corner steel cladding is provided between the stainless steel cladding of the wall and the steel cladding of the top surface of the floor slab for corner transition; the corner steel cladding is connected to the unit connector.

[0016] Optionally, mechanical sleeves are provided at both ends of the steel cage along its length, and the mechanical sleeves are adapted to connect two adjacent sets of prefabricated composite wall components with stainless steel cladding.

[0017] Optionally, a post-cast concrete composite layer is formed between the first and second precast concrete blades with stainless steel cladding by pouring concrete. The post-cast concrete composite layer and the precast composite wall components with stainless steel cladding together form an integral steel-clad composite wall.

[0018] The construction method for stainless steel clad composite walls in nuclear engineering provided by this invention includes the following steps:

[0019] S1. On-site construction completes the concrete pouring of the floor slab and the wall of the next floor to provide a support platform and / or working platform for the prefabricated composite wall components with stainless steel cladding.

[0020] S2. Process prefabricated composite wall components with stainless steel cladding, process to form stainless steel cladding and steel cage, and then transfer to the formwork to cast prefabricated composite wall components with stainless steel cladding.

[0021] S3. Install prefabricated composite wall components with stainless steel cladding;

[0022] S4. Pour concrete to form a post-cast concrete composite layer, so that the post-cast concrete composite layer and the precast composite wall component with stainless steel cladding together form an integral steel-clad composite wall.

[0023] Optionally, in step S2, the casting of the precast composite wall component with stainless steel cladding includes:

[0024] The stainless steel cladding of the wall and the inner steel mesh are cast together into the first precast concrete leaf slab with the stainless steel cladding.

[0025] The outer steel mesh is poured into the second precast concrete leaf slab;

[0026] The first precast concrete blade with stainless steel cladding is cast using ultra-low chlorine concrete mixed with demineralized water.

[0027] Optionally, in step S3, the installation of the prefabricated composite wall component with stainless steel cladding includes:

[0028] Mechanical sleeves are used to connect the reinforcing cage of this wall layer to the reinforcing cage of the next wall layer;

[0029] Angle steel cladding is used to connect the stainless steel cladding of the wall to the steel cladding on the top surface of the floor slab;

[0030] Mechanical sleeves and unit connectors are used to connect any two adjacent prefabricated composite wall components with stainless steel cladding along the length direction.

[0031] The technical solution of this invention has the following advantages:

[0032] 1. The stainless steel-clad composite wall for nuclear engineering provided by this invention increases the rigidity of the stainless steel cladding by pre-casting the stainless steel cladding and the inner steel mesh together to form the first precast concrete blade with stainless steel cladding. This ensures that the stainless steel cladding has sufficient rigidity and load-bearing capacity during transportation, hoisting, and on-site pouring of the composite concrete layer, preventing deformation and damage. The concrete blade serves as a wall formwork, eliminating the need for formwork support. Furthermore, only the first precast concrete blade with stainless steel cladding is poured using ultra-low chlorine concrete mixed with demineralized water, significantly reducing the amount of ultra-low chlorine concrete required. This invention enables modular construction of the stainless steel cladding, reducing on-site welding and weld inspection workload, eliminating the need for formwork support, and lowering the amount of ultra-low chlorine concrete used. This improves the construction efficiency of stainless steel-clad walls in nuclear engineering while saving costs, thus promoting the industrialization of nuclear engineering civil construction.

[0033] 2. The construction method for stainless steel-clad composite walls in nuclear engineering provided by this invention involves on-site construction of the floor slab and the wall of the next floor to provide a support platform and / or working platform for the precast composite wall components with stainless steel cladding; prefabrication of the stainless steel cladding and reinforcing cage, followed by transfer to a formwork for casting to form the precast composite wall components with stainless steel cladding. Only the first precast concrete leaf slab with stainless steel cladding is cast using ultra-low chlorine concrete mixed with demineralized water; installation of the precast composite wall components with stainless steel cladding; and pouring concrete to form a post-cast concrete composite layer, so that the post-cast concrete composite layer and the precast composite wall components with stainless steel cladding together form an integral steel-clad composite wall. This method not only reduces on-site welding and weld inspection workload and eliminates the need for formwork support, but also reduces the amount of ultra-low chlorine concrete used, improving the construction efficiency of stainless steel-clad walls in nuclear engineering while saving costs. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a cross-sectional structural diagram of a prefabricated composite wall component with stainless steel cladding for nuclear engineering, as described in this invention.

[0036] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0037] Figure 3 This is a top view of the steel cage of the stainless steel-clad composite wall for nuclear engineering according to the present invention.

[0038] Figure 4 This is a front view structural diagram of the stainless steel cladding of the composite wall structure for nuclear engineering of the present invention.

[0039] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of section BB in the middle;

[0040] Figure 6 This is a schematic cross-sectional view of the overall steel-clad composite wall structure of the nuclear engineering stainless steel-clad composite wall of the present invention.

[0041] Figure 7 This is a schematic diagram of the cross-sectional structure after the concrete pouring of the current floor slab and the next floor wall is completed in step S1 of the construction method of the stainless steel clad composite wall for nuclear engineering of the present invention.

[0042] Figure 8 This is a schematic diagram of the cross-sectional structure of the prefabricated composite wall with stainless steel cladding after on-site installation in step S3 of the construction method of the stainless steel cladding composite wall for nuclear engineering of the present invention.

[0043] Figure 9 for Figure 8 Enlarged view of point C in the middle;

[0044] Figure 10 This is a schematic diagram of the cross-sectional structure of the integral steel-clad composite wall formed by on-site casting in step S4 of the construction method of the stainless steel-clad composite wall for nuclear engineering of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 10. Reinforcing cage; 11. Inner reinforcing mesh; 12. Outer reinforcing mesh; 13. Tie bars;

[0047] 20. Precast composite wall components with stainless steel cladding; 21. First precast concrete blade with stainless steel cladding; 22. Second precast concrete blade; 23. Stainless steel cladding on the wall; 230. Covering panel; 231. Horizontal stiffening rib; 232. Vertical stiffening rib; 233. Unit connector;

[0048] 30. Angle steel cladding;

[0049] 40. Mechanical sleeve;

[0050] 50. Integral steel-clad composite wall; 51. Post-cast concrete composite layer. Detailed Implementation

[0051] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] Example 1

[0056] Combination Figures 1-10 As shown, the nuclear engineering stainless steel clad composite wall provided in this embodiment includes:

[0057] The first precast concrete blade 21 with stainless steel cladding is connected to the second precast concrete blade 22 via a steel cage 10.

[0058] The stainless steel cladding 23 of the wall is precast together with the inner steel mesh 11 of the steel cage 10 to form the first precast concrete leaf slab 21 with stainless steel cladding.

[0059] The outer steel mesh 12 of the steel cage 10 is cast into the second precast concrete leaf slab 22;

[0060] The first precast concrete blade 21 with stainless steel cladding is connected to the second precast concrete blade 22 through the steel cage 10 to form a precast composite wall component 20 with stainless steel cladding.

[0061] Please refer to the appendix for details. Figure 3 As shown, the reinforcing cage 10 includes inner reinforcing mesh 11 and outer reinforcing mesh 12 spaced apart along the thickness direction, and a plurality of tie bars 13 are provided between the inner reinforcing mesh 11 and the outer reinforcing mesh 12; it can be understood that... Figure 3 The steel cage 10 in the design includes all the steel bars that constitute the stainless steel-clad composite wall of the nuclear project, meeting all load requirements during the construction and use of the floor / wall, eliminating the need for additional on-site steel bar tying, and realizing the industrialization of steel cages.

[0062] It should be noted that the steel cage 10, as well as the first precast concrete leaf slab 21 and the second precast concrete leaf slab 22 with stainless steel cladding cast on the basis of the steel cage 10, are all precast in the factory. The stainless steel cladding 23 of the wall body cast within the first precast concrete leaf slab 21 with stainless steel cladding is also precast in the factory. During the casting process, at least a portion of the stainless steel cladding 23 of the wall body, the inner steel mesh 11, and the tie rod 13 along one end of the thickness direction must be cast together into the first precast concrete leaf slab 21 with stainless steel cladding. At the same time, at least a portion of the outer steel mesh 12 and the tie rod 13 along the other end of the thickness direction must be cast together into the second precast concrete leaf slab 22 to form a precast composite wall component 20 with stainless steel cladding. This component not only has sufficient rigidity, but also ensures sufficient rigidity and load-bearing capacity during transportation, hoisting, and on-site casting of the composite concrete layer, preventing deformation and damage.

[0063] It is worth noting that the stainless steel-clad composite wall for nuclear engineering provided by this invention increases the rigidity of the stainless steel cladding by pre-casting the stainless steel cladding 23 and the inner steel mesh 11 together into the first precast concrete blade 21 with stainless steel cladding. This ensures that the stainless steel cladding has sufficient rigidity and load-bearing capacity during transportation, hoisting, and on-site pouring of the composite concrete layer, preventing deformation and damage. The concrete blade serves as a wall formwork, eliminating the need for formwork support. The first precast concrete blade 21 with stainless steel cladding is poured using ultra-low chlorine concrete mixed with demineralized water. Simultaneously, the outer steel mesh 12 is poured into the second precast concrete blade 22. During the pouring process, the steel cage 10 connects the second precast concrete blade 22 with the first precast concrete blade 21 with stainless steel cladding. The precast composite wall components 20, with stainless steel cladding, are interconnected to form a whole. Compared with the post-application method of stainless steel cladding, the stainless steel cladding composite wall of this invention for nuclear engineering projects allows for the pre-application of the stainless steel cladding, reducing on-site welding and weld inspection work, as well as reducing on-site operations such as formwork erection and dismantling, and rebar tying. Compared with the pre-application method of stainless steel cladding, only the first precast concrete leaf slab 21 with stainless steel cladding in this invention needs to be poured with ultra-low chlorine concrete mixed with demineralized water, which greatly reduces the amount of ultra-low chlorine concrete and improves economic efficiency. At the same time, it reduces on-site operations such as formwork erection and dismantling, and rebar tying. Compared with stainless steel plate concrete structures, the stainless steel cladding composite wall of this invention for nuclear engineering projects not only does not require increasing the thickness of the stainless steel cladding, but also does not require the extensive use of ultra-low chlorine concrete, greatly improving economic efficiency. In summary, the stainless steel clad composite wall of the present invention realizes the modular construction of stainless steel cladding, which not only reduces the workload of on-site welding and weld inspection and eliminates the need for formwork support, but also reduces the amount of ultra-low chlorine concrete used. It improves the construction efficiency of stainless steel clad walls in nuclear engineering while saving costs, which is conducive to promoting the industrialization process of civil construction in nuclear engineering.

[0064] Specifically, the stainless steel cladding 23 of the wall includes a cladding panel 230 and horizontal stiffening ribs 231 and vertical stiffening ribs 232 disposed on the cladding panel 230. The cladding panel 230 and the horizontal stiffening ribs 231 and vertical stiffening ribs 232 thereon, together with the inner steel mesh 11, are cast into the first precast concrete leaf slab 21 with stainless steel cladding.

[0065] It should be noted that, as an alternative implementation, the horizontal stiffening rib 231 and the vertical stiffening rib 232 can also be replaced by anchor bars; the cover panel 230 and the anchor bars together with the inner steel mesh 11 are cast together to form the first precast concrete leaf slab 21 with stainless steel cover to cooperate in bearing the force, ensuring that it has sufficient rigidity and bearing capacity, and avoiding deformation or damage during transportation, hoisting and on-site post-cast concrete composite layer pouring.

[0066] Please see Figure 4 and Figure 5 As shown, in this embodiment, the stainless steel wall cladding 23 includes a cladding panel 230 and a plurality of horizontal stiffening ribs 231 and a plurality of vertical stiffening ribs 232 disposed on the cladding panel 230. The plurality of horizontal stiffening ribs 231 and the plurality of vertical stiffening ribs 232 are arranged in a cross shape with each other. Please refer to [link to relevant documentation]. Figure 1 and Figure 2 As shown, the horizontal stiffening ribs 231 and the vertical stiffening ribs 232, together with the inner steel mesh 11, are cast into the first precast concrete leaf slab 21 with stainless steel cladding, thereby achieving a reliable connection between the stainless steel cladding 23 of the wall and the precast concrete leaf slab, so as to cooperate in bearing the force, ensure that it has sufficient rigidity and bearing capacity, and avoid deformation or damage during transportation, hoisting and on-site post-cast concrete composite layer pouring.

[0067] Specifically, the reinforcing cage 10 further includes a tie bar 13, which connects the inner reinforcing mesh 11 and the outer reinforcing mesh 12. One end of the tie bar 13 along the thickness direction is cast together with the inner reinforcing mesh 11 into the first precast concrete leaf slab 21 with stainless steel cladding, and the other end is cast together with the outer reinforcing mesh 12 into the second precast concrete leaf slab 22, so as to connect the first precast concrete leaf slab 21 and the second precast concrete leaf slab 22 with stainless steel cladding to the reinforcing cage 10 to form an integral precast composite wall component 20 with stainless steel cladding.

[0068] Please see Figure 3 As shown, in this embodiment, the reinforcing cage 10 further includes tie bars 13, and a plurality of tie bars 13 are connected along the thickness direction between the inner reinforcing mesh 11 and the outer reinforcing mesh 12. Please refer to [link to relevant documentation]. Figure 1As shown, one end of the tie bar 13 along the thickness direction is cast together with the inner steel mesh 11 into the first precast concrete leaf slab 21 with stainless steel cladding, and the other end is cast together with the outer steel mesh 12 into the second precast concrete leaf slab 22, so as to connect the first precast concrete leaf slab 21 and the second precast concrete leaf slab 22 with stainless steel cladding to the steel cage 10 to form an integral precast composite wall component 20 with stainless steel cladding. The precast composite wall component 20 with stainless steel cladding not only has sufficient rigidity and load-bearing capacity, which can avoid deformation or damage during transportation, hoisting and on-site post-cast concrete composite layer pouring, but also reduces the workload of on-site welding and weld inspection, and eliminates the need for formwork support.

[0069] Specifically, unit connectors 233 are fixedly provided on both sides of the stainless steel wall cladding 23 along its length, and the unit connectors 233 are adapted to connect two adjacent stainless steel wall claddings 23.

[0070] Optionally, the unit connector 233 is a T-shaped connector.

[0071] Please see Figure 9 As shown, in this embodiment, unit connectors 233 are fixedly provided on both sides of the stainless steel cladding 23 along the length direction of the wall. The unit connectors 233 are welded to the stainless steel cladding 23. The unit connectors 233 are used for butt welds between two adjacent stainless steel claddings 23. By providing the unit connectors 233, the corner positions between the wall and the plate and the walls along the length direction of the wall are connected into a whole.

[0072] Specifically, a corner steel cladding 30 is provided between the stainless steel cladding 23 of the wall and the steel cladding on the top surface of the floor slab for corner transition; the corner steel cladding 30 is connected to the unit connector 233.

[0073] Optionally, the angle steel cover 30 is welded to the unit connector 233.

[0074] Please see Figure 9 As shown, in this embodiment, the stainless steel cladding 23 of the wall and the steel cladding on the top surface of the floor slab are connected by a corner steel cladding 30 to form a corner transition. One side of the corner steel cladding 30 is connected to the unit connector 233 on the stainless steel cladding 23 of the wall, and the other side is connected to the unit connector 233 on the steel cladding on the top surface of the floor slab, thereby connecting the stainless steel cladding 23 of the wall and the steel cladding on the top surface of the floor slab into a whole, and thus connecting the wall and the floor slab into a whole.

[0075] Specifically, mechanical sleeves 40 are provided at both ends of the length direction of the steel cage 10, and the mechanical sleeves 40 are suitable for connecting two adjacent sets of the composite wall prefabricated components 20 with stainless steel covering.

[0076] Please see Figure 8 As shown in this embodiment, mechanical sleeves 40 are also provided at both ends of the length direction of the steel cage 10. The mechanical sleeves 40 are suitable for connecting the two adjacent sets of precast composite wall components 20 with stainless steel coverings in the upper and lower layers into a whole, thereby ensuring the overall stress performance and making the overall stress performance of the composite wall basically the same as that of the cast-in-place concrete structure.

[0077] Specifically, a post-cast concrete composite layer 51 is formed between the first precast concrete leaf slab 21 and the second precast concrete leaf slab 22 with stainless steel cladding by pouring concrete. The post-cast concrete composite layer 51 and the precast composite wall component 20 with stainless steel cladding together form an integral steel-clad composite wall 50.

[0078] Please see Figure 6 As shown, in this embodiment, the first precast concrete blade 21 with stainless steel cladding and the second precast concrete blade 22 form a post-cast concrete composite layer 51 by pouring concrete. The post-cast concrete composite layer 51 and the precast composite wall component 20 with stainless steel cladding together form an integral steel-clad composite wall 50 to share the load. The integral steel-clad composite wall 50 has sufficient rigidity and load-bearing capacity and will not deform or break.

[0079] It should be noted that the stainless steel-clad composite wall of the nuclear engineering project described in this invention can adapt to the requirements of ultra-long walls, and its length can be determined according to the room length. The prefabricated composite wall component 20 with stainless steel cladding can be standardized into one of the standard unit modules that make up the stainless steel-clad composite wall of the nuclear engineering project. The length of the standard unit module can be controlled between 6m and 10m, and the height of the standard unit module is adapted to the room height. During on-site installation, the steel cages 10 of each two adjacent standard unit modules can be connected by mechanical sleeves 40, and the stainless steel cladding 23 of each two adjacent standard unit modules can be connected by butt welds using unit connectors 233. After installation, concrete is poured into the prefabricated composite wall component 20 with stainless steel cladding to form a post-cast concrete composite layer 51, so that the post-cast concrete composite layer 51 and the prefabricated composite wall component 20 with stainless steel cladding together form an integral steel-clad composite wall 50 to share the load.

[0080] Example 2

[0081] Combination Figures 7-10As shown in this embodiment, the construction method for the stainless steel clad composite wall in nuclear engineering includes the following steps:

[0082] S1. On-site construction completes the concrete pouring of the floor slab and the wall of the next floor to provide a support platform and / or working platform for the prefabricated composite wall component 20 with stainless steel cladding.

[0083] S2. Process the precast composite wall component 20 with stainless steel cladding, process it to form the stainless steel cladding 23 of the wall and the steel cage 10, and then transfer it to the formwork to cast the precast composite wall component 20 with stainless steel cladding.

[0084] S3. Install 20 prefabricated composite wall components with stainless steel cladding;

[0085] S4. Pour concrete to form a post-cast concrete composite layer 51, so that the post-cast concrete composite layer 51 and the precast composite wall component 20 with stainless steel cladding together form an integral steel-clad composite wall 50.

[0086] It should be noted that step S1 is performed on-site, while step S2 can be prefabricated in the factory. Steps S1 and S2 can be performed simultaneously without conflict. Please refer to [link / reference]. Figure 7 As shown, in step S1, the concrete pouring of the floor slab and the wall of the next floor is completed on site. The floor slab and the wall of the next floor provide a support platform and / or working platform for the precast composite wall component 20 with stainless steel cladding. The stainless steel cladding of the floor slab can be constructed by post-application. In step S4, concrete is poured between the first precast concrete leaf slab 21 and the second precast concrete leaf slab 22 with stainless steel cladding to form a post-cast concrete composite layer 51, so that the post-cast concrete composite layer 51 and the precast composite wall component 20 with stainless steel cladding together form an integral steel-clad composite wall 50.

[0087] Specifically, in step S2, the casting of the precast composite wall component 20 with a stainless steel cladding includes:

[0088] The stainless steel cladding 23 of the wall and the inner steel mesh 11 are cast together in the first precast concrete leaf slab 21 with stainless steel cladding.

[0089] The outer steel mesh 12 is poured into the second precast concrete leaf slab 22;

[0090] The first precast concrete blade 21 with stainless steel cladding is cast using ultra-low chlorine concrete mixed with demineralized water.

[0091] It should be noted that in step S2, the casting of the precast composite wall component 20 with stainless steel cladding includes: casting the stainless steel cladding 23 of the wall, along with one end of the inner steel mesh 11 and the tie bar 13, into the first precast concrete leaf slab 21 with stainless steel cladding; simultaneously casting the other end of the outer steel mesh 12 and the tie bar 13 into the second precast concrete leaf slab 22, thereby connecting the first precast concrete leaf slab 21 and the second precast concrete leaf slab 22 with stainless steel cladding to the steel cage 10 to form an integral precast composite wall component 20 with stainless steel cladding; wherein, only the first precast concrete leaf slab 21 with stainless steel cladding needs to be cast with ultra-low chlorine concrete mixed with demineralized water, which greatly reduces the amount of ultra-low chlorine concrete and improves economy; at the same time, it reduces on-site operations such as formwork erection and dismantling, and steel bar binding.

[0092] Specifically, in step S3, the installation of the prefabricated composite wall component 20 with stainless steel cladding includes:

[0093] A mechanical sleeve 40 is used to connect the steel reinforcement cage 10 of the current wall to the steel reinforcement cage 10 of the next wall.

[0094] Angle steel cladding 30 is used to connect the stainless steel cladding 23 of the wall to the steel cladding on the top surface of the floor slab;

[0095] Two adjacent prefabricated composite wall components 20 with stainless steel cladding are connected along the length direction using mechanical sleeves 40 and unit connectors 233.

[0096] The construction method for the stainless steel-clad composite wall in nuclear engineering provided in this embodiment involves on-site construction of the floor slab and the wall of the next floor to provide a support platform and / or working platform for the precast composite wall component 20 with stainless steel cladding; prefabrication of the stainless steel cladding 23 and the reinforcing cage 10, followed by transfer to a formwork for casting to form the precast composite wall component 20 with stainless steel cladding. Only the first precast concrete leaf slab 21 with stainless steel cladding is cast using ultra-low chlorine concrete mixed with demineralized water; installation of the precast composite wall component 20 with stainless steel cladding; and pouring concrete to form a post-cast concrete composite layer 51, so that the post-cast concrete composite layer 51 and the precast composite wall component 20 with stainless steel cladding together form an integral steel-clad composite wall 50. Compared to the post-application method of stainless steel cladding, the construction method of this invention allows for the pre-application of the stainless steel cladding, reducing on-site welding and weld inspection work, as well as reducing on-site operations such as formwork erection and dismantling, and rebar tying. Compared to the pre-application method, the construction method of this invention only requires the first precast concrete leaf slab 21 with stainless steel cladding to be poured with ultra-low chlorine concrete mixed with demineralized water, greatly reducing the amount of ultra-low chlorine concrete and improving economic efficiency. At the same time, it reduces on-site operations such as formwork erection and dismantling, and rebar tying. In summary, the construction method of this invention not only reduces the amount of on-site welding and weld inspection work and eliminates the need for formwork support, but also reduces the amount of ultra-low chlorine concrete used, thereby improving the construction efficiency of stainless steel clad walls in nuclear engineering while saving costs.

[0097] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A composite wall system with stainless steel cladding for nuclear engineering, characterized in that, include: The first precast concrete blade (21) with stainless steel cladding is connected to the second precast concrete blade (22) via a steel cage (10); The stainless steel cladding (23) of the wall is precast together with the inner steel mesh (11) of the steel cage (10) to form the first precast concrete leaf slab (21) with stainless steel cladding. The outer steel mesh (12) of the steel cage (10) is cast into the second precast concrete leaf slab (22); The first precast concrete blade (21) with stainless steel cladding is connected to the second precast concrete blade (22) through a steel cage (10) to form a precast composite wall component (20) with stainless steel cladding; only the first precast concrete blade (21) with stainless steel cladding is formed by pouring ultra-low chlorine concrete mixed with demineralized water; the stainless steel cladding (23) of the wall includes a cladding panel (230) and horizontal stiffening ribs (231) and vertical stiffening ribs (232) provided on the cladding panel (230), and the cladding panel (230) and the horizontal stiffening ribs (231) and vertical stiffening ribs (232) on it are poured together with the inner steel mesh (11) to form the first precast concrete blade (21) with stainless steel cladding. The steel cage (10) also includes a tie bar (13), which is connected between the inner steel mesh (11) and the outer steel mesh (12). One end of the tie bar (13) along the thickness direction is cast together with the inner steel mesh (11) in the first precast concrete leaf slab (21) with stainless steel cladding, and the other end is cast together with the outer steel mesh (12) in the second precast concrete leaf slab (22). Mechanical sleeves (40) are provided at both ends of the steel cage (10) along its length. The mechanical sleeves (40) are suitable for connecting two adjacent sets of prefabricated composite wall components (20) with stainless steel cladding. The first precast concrete blade (21) with stainless steel cladding and the second precast concrete blade (22) form a post-cast concrete composite layer (51) by pouring concrete. The post-cast concrete composite layer (51) and the precast composite wall component (20) with stainless steel cladding together form an integral steel-clad composite wall (50).

2. The stainless steel-clad composite wall for nuclear engineering according to claim 1, characterized in that, Unit connectors (233) are fixedly provided on both sides of the length direction of the stainless steel cladding (23) of the wall, and the unit connectors (233) are adapted to connect two adjacent stainless steel claddings (23).

3. The stainless steel-clad composite wall for nuclear engineering according to claim 2, characterized in that, A corner steel cladding (30) is provided between the stainless steel cladding (23) of the wall and the steel cladding on the top surface of the floor slab for corner transition; the corner steel cladding (30) is connected to the unit connector (233).

4. A construction method for forming the stainless steel clad composite wall for nuclear engineering as described in any one of claims 1-3, characterized in that, Includes the following steps: S1. On-site construction completes the concrete pouring of the floor slab and the wall of the next floor to provide a support platform and / or working platform for the prefabricated composite wall components (20) with stainless steel cladding. S2. Process the precast composite wall component (20) with stainless steel cladding, process to form stainless steel cladding (23) and steel cage (10), and then transfer to the formwork to cast the precast composite wall component (20) with stainless steel cladding. S3. Install prefabricated composite wall components with stainless steel cladding (20); S4. Pour concrete to form a post-cast concrete composite layer (51), so that the post-cast concrete composite layer (51) and the precast composite wall component (20) with stainless steel cladding together form an integral steel-clad composite wall (50).

5. The construction method for stainless steel clad composite walls in nuclear engineering according to claim 4, characterized in that, In step S2, the casting of the precast composite wall component (20) with stainless steel cladding includes: The stainless steel cladding (23) of the wall and the inner steel mesh (11) are cast together in the first precast concrete leaf slab (21) with stainless steel cladding; The outer steel mesh (12) is poured into the second precast concrete leaf slab (22); The first precast concrete leaf slab (21) with stainless steel cladding is cast using ultra-low chlorine concrete mixed with demineralized water.

6. The construction method for stainless steel clad composite walls in nuclear engineering according to claim 4 or 5, characterized in that, In step S3, the installation of the prefabricated composite wall component (20) with stainless steel cladding includes: A mechanical sleeve (40) is used to connect the steel cage (10) of the wall on this floor to the steel cage (10) of the wall on the next floor; Angle steel cladding (30) is used to connect the stainless steel cladding (23) of the wall to the steel cladding on the top surface of the floor slab of this floor. Two adjacent prefabricated composite wall components (20) with stainless steel cladding are connected along the length direction using mechanical sleeves (40) and unit connectors (233).

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