Reinforcement arrangement method for nuclear island inner shell annular wall, nuclear island inner shell annular wall and nuclear power plant

Abstract

The present application discloses a method for laying out reinforcement for a nuclear island inner shell annular wall, a nuclear island inner shell annular wall, and a nuclear power plant. The method comprises: an annular wall parameter acquisition step; a basic structure model and a special-shaped structure contour model acquisition step; an adjustment parameter acquisition step; a simulation model acquisition step; an analysis and adjustment step, wherein the layout model of the prestressed steel strands and the layout model of the reinforcement are analyzed. If there is a position conflict between the reinforcement and the prestressed steel strands, the conflicting reinforcement is moved by the distance between the conduits through which the two adjacent prestressed steel strands pass, minus the diameter of the conduit, so that the reinforcement avoids the prestressed steel strands; an update step; and a reinforcement scheme acquisition step, which obtains a reinforcement scheme for the annular wall. According to the scheme of the present application, the special-shaped structures present in the annular wall are automatically considered, and the conflict problem between the reinforcement and the steel strands during layout is resolved, significantly improving the efficiency of reinforcement layout.

Description

Technical Field

[0001] The present application relates to the field of nuclear power plant construction engineering, and more specifically, to a method for laying out reinforcement bars of a nuclear island inner shell annular wall, a nuclear island inner shell annular wall, and a nuclear power plant. Background Art

[0002] my country is currently actively promoting the construction of multiple nuclear power projects, and the nuclear island ring wall, a crucial component of a nuclear power plant, is attracting considerable attention. Within the inner shell ring wall, in addition to rebar, prestressed steel strands are also installed. These strands are constructed using a post-tensioning method, where they are tensioned after concrete pouring and then anchored.

[0003] However, when laying out the steel bars and prestressed steel strands in the annular wall of the existing nuclear island inner shell, irregular wall structures such as openings are not taken into account. Furthermore, positional conflicts often occur when laying out the steel bars and steel strands. This results in the need to manually consider the irregular wall structures and the positional conflicts between the steel bars and steel strands. This greatly affects the efficiency of steel bar layout and causes a sharp increase in construction costs.

[0004] Therefore, how to consider the special-shaped structure of the annular wall and the position conflict between the steel bars and the steel bundles when laying out the steel bars, saving building materials and reducing the overall construction cost has become a problem that needs to be solved in this field. Summary of the Invention

[0005] In view of this, the present application proposes a method for laying out reinforcement bars of a nuclear island inner shell annular wall, a solution for a nuclear island inner shell annular wall and a nuclear power plant.

[0006] In a first aspect, the present application proposes a method for laying out reinforcement bars of a nuclear island inner shell annular wall, comprising:

[0007] an annular wall parameter acquisition step, acquiring the parameters of the annular wall, wherein the parameters of the annular wall include basic structural parameters and special-shaped structural parameters of the annular wall;

[0008] A basic structure model and a special-shaped structure outline model acquisition step, using a modeling model to obtain the basic structure model of the annular wall and the special-shaped structure outline model of the annular wall according to the basic structure parameters and special-shaped structure parameters of the annular wall; the modeling model is constructed using a BIM tool;

[0009] an adjustment parameter acquisition step, using the adjustment model to analyze the basic structural model of the annular wall and the contour model of the special-shaped structure to obtain adjustment parameters;

[0010] a simulation model acquisition step of updating the basic structural model of the annular wall according to the adjustment parameters to obtain a simulation model of the annular wall, wherein the simulation model of the annular wall includes a layout model of prestressed steel strands and a layout model of steel bars;

[0011] an analysis and adjustment step, analyzing the layout model of the prestressed steel tendons and the layout model of the steel bars, and if there is a position conflict between the steel bars and the prestressed steel tendons, moving the conflicting steel bars by a distance between the conduits through which the two adjacent prestressed steel tendons pass, minus the diameter of the conduits, so that the steel bars avoid the prestressed steel tendons;

[0012] an updating step of updating the simulation model of the annular wall according to the adjusted layout positions of the steel bars; and

[0013] The reinforcement scheme acquisition step uses the reinforcement model to obtain the reinforcement scheme of the annular wall according to the updated simulation model of the annular wall.

[0014] Preferably, the adjustment parameter acquisition step includes:

[0015] Compare the opening size in the special-shaped structure parameters with the preset steel bar arrangement spacing,

[0016] If the opening size is not less than the preset steel bar arrangement spacing, the basic structure model of the annular wall is subtracted from the special-shaped structure contour model using a three-dimensional Boolean operation model to obtain adjustment parameters.

[0017] Preferably, the basic structure model acquisition step includes:

[0018] By using the modeling model, according to the basic structural parameters of the annular wall, the BIM model is used to sequentially construct concrete components, prestressed steel strands and steel bars to obtain a basic structural model of the annular wall.

[0019] Preferably, in the analysis and adjustment step, if there is a position conflict between the steel bar and the prestressed steel strand, the conflicting steel bar is moved to a midpoint between the conduits through which two adjacent prestressed steel strands pass.

[0020] Preferably, after the reinforcement scheme acquisition step, the method further includes:

[0021] The verification process is to construct a verification model and set preset design requirements based on the design requirements and construction implementation plan of the building, and use the verification model to determine whether the layout model of the prestressed steel tendons and the layout model of the steel bars meet the preset design requirements.

[0022] If not, the corresponding data in the modeling model is updated according to the data in the verification result, and the updated modeling model is used to obtain a new simulation model of the annular wall until the new prestressed steel strand layout model and the new steel bar layout model meet the preset design requirements.

[0023] Preferably, after the reinforcement scheme acquisition step, the method further includes:

[0024] The cutting model process trains the cutting model based on the original steel bar length, the longest fixed length, the steel bar arrangement staggered length, and the construction node features; and

[0025] The reinforcement cutting plan acquisition process uses the trained cutting model to obtain the reinforcement cutting plan for the circular wall based on the opening information of the circular wall and the required reinforcement length, as well as the original reinforcement length, the longest fixed length, and the staggered length of the reinforcement arrangement.

[0026] Further preferably, the steel bar breaking plan obtaining step includes:

[0027] Obtaining one or more available steel bar lengths according to the opening information of the annular wall and the original steel bar length;

[0028] The available steel bar lengths are screened according to the longest fixed length, and sorted by length to obtain a set of available steel bar lengths;

[0029] Obtaining a target required steel bar length according to the required steel bar length and the steel bar arrangement stagger length; and

[0030] Traversing the target required steel bar length, in the set of available steel bar lengths, determining in order whether the available steel bar length is not less than the current target required steel bar length,

[0031] If there is a steel bar length that is not less than the current target required length, then mark the matching result of the current available steel bar length and the current target required length, and after deleting the current available steel bar length from the set of available steel bar lengths, match the next target required length of the steel bar;

[0032] If there is no steel bar length that is not less than the target required length, an available steel bar length is updated in the set of available steel bar lengths, and the current target required length of the steel bar is matched again in the updated set of available steel bar lengths.

[0033] In a second aspect, the present application further proposes a nuclear island inner shell annular wall, wherein the annular wall structure is constructed by the reinforcement layout method of the nuclear island inner shell annular wall described in the first aspect above.

[0034] In a third aspect, the present application further proposes a nuclear power plant, which includes the annular wall described in the second aspect above.

[0035] According to the reinforcement layout method for the annular wall of the nuclear island inner shell provided in this application, before the reinforcement is laid, the special-shaped structure in the annular wall is automatically considered, and the conflict problem when laying the reinforcement and the steel bundle is solved. While greatly improving the efficiency of reinforcement layout, it also greatly reduces the resource waste caused by subsequent reinforcement layout and broken reinforcement, thereby reducing the overall construction cost.

[0036] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which constitute part of this application, are used to provide a further understanding of the application, and the exemplary embodiments of the application and their descriptions are used to explain the application. In the accompanying drawings:

[0038] Figure 1 Schematic diagram of a method for laying out reinforcement bars of a nuclear island inner shell annular wall according to a preferred embodiment of the present application;

[0039] Figure 2 This is a schematic diagram of locally adjusting the position of the steel bar when the steel bar collides with the conduit;

[0040] Figure 3 It is a schematic diagram of the process of obtaining the steel bar cutting solution according to the preferred embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with the implementation methods.

[0042] In the construction of nuclear power plants, the annular wall is the side wall of the containment cylinder. It is an indispensable component of the nuclear power plant and can be regarded as the "backbone" of the nuclear power plant. It is mainly used to support the huge weight of the core components of the nuclear power plant. At the same time, it also needs to serve as a protective barrier for the nuclear power plant.

[0043] In the first aspect, the present application proposes a method for laying out the reinforcement bars of the annular wall of the inner shell of the nuclear island. Figure 1 As shown, the following steps are included:

[0044] Step 101: obtaining parameters of the annular wall;

[0045] Specifically, a building design drawing is obtained, and parameters of the annular wall are obtained according to the building design drawing.

[0046] The building model is based on various nuclear island design drawings, with the relevant wall parameters clearly marked on the drawings. This drawing can be a design drawing of the entire building or a design drawing of the annular wall, which is not limited in this application.

[0047] The parameters of the annular wall include: basic structural parameters of the annular wall and special structural parameters. Among them, the basic structural parameters of the annular wall can be understood as the parameters required for the basic design of the annular wall in architectural design.

[0048] In a specific embodiment, the basic structural parameters of the annular wall include: one or more of the following parameters: the diameter of the wall center circle, the curvature of the wall, the cross-sectional dimensions, the material strength, the thickness of the ring wall, the casting height, the axial compressive bearing capacity, and the shear strength parameters. The diameter of the wall center circle and the curvature of the wall represent the overall size, shape, and modeling of the annular wall; the cross-sectional dimensions must be determined based on specific design requirements and load-bearing capacity; the material strength is used to ensure the bearing capacity and durability of the annular wall; the thickness of the annular wall is related to factors such as the standard value of the vertical linear distributed load transmitted from the bottom of the shell to the top of the annular wall and the width coefficient of the shell penetrating into the top surface of the annular wall; the casting height affects the stress and displacement of the ribbed steel formwork of the annular wall; the axial compressive bearing capacity requires verification of the axial compressive bearing capacity of the annular wall foundation model when bearing the weight of the tank test model and the weight of the water in the tank; and the shear strength requires verification of the ability of the annular wall foundation model to resist shear failure.

[0049] In summary, the basic structural parameters of a circular wall encompass multiple aspects, from basic model design, material selection, structural parameters, casting parameters, and verification parameters. However, these parameters are only basic. In practice, it is impossible for all circular walls to adopt a standard structure. The design process also requires consideration of how to integrate with other building structures and pipelines, as well as the space reserved for equipment placement, which can lead to the formation of special-shaped circular walls. Failure to consider special-shaped structures during the modeling, reinforcement placement, and reinforcement cutting stages of the circular wall will result in wasted resources during the final reinforcement cutting, affecting the overall construction process.

[0050] In this application, when modeling an annular wall, not only the fundamental structure of the annular wall—that is, the basic structural parameters of the annular wall—must be considered, but also the irregular structures within the annular wall—that is, the irregular structural parameters of the annular wall. To facilitate connection with other building structures within the building or for other requirements, the annular wall typically contains multiple process holes, which represent the irregular structures of the annular wall. The irregular structural parameters can be understood as the contour parameters of all the process holes in the annular wall.

[0051] Process 102, a process for obtaining a basic structure model and a special-shaped structure contour model;

[0052] Specifically, the basic structural model of the annular wall and the contour model of the special-shaped structure of the annular wall are obtained according to the basic structural parameters and the special-shaped structure parameters of the annular wall by using the modeling model.

[0053] When constructing a model, the model can be constructed based on one or more of the building function information, surrounding environment information, project stage information, and professional collaboration information. For example, a model can be constructed based on the requirements of radiation control, water conservancy, electricity, etc. for the building. The model can be specifically constructed using Building Information Modeling (BIM). ) Tool building.

[0054] In a specific embodiment, the modeling model is used to sequentially construct concrete components, prestressed steel strands, and steel bars according to the basic structural parameters of the annular wall to obtain the basic structural model of the annular wall. This process can also be specifically implemented using the Building Information Modeling (BIM). ) Tool construction. Prestressed steel strands can be understood as a special type of steel bar, which is characterized by being pre-tensioned so that the strands can withstand inertial forces under load, thereby reducing structural deformation and stress and enhancing the seismic performance of the structure. Figure 3 As shown, the prestressed steel strands in the inner shell's annular wall are divided into circular strands and inverted U-shaped radial strands. These strands are inserted into the inner shell through conduits that were previously prepared before concrete construction. Rigid conduits can be used for the inverted U-shaped radial strands, the annular strands in areas of large curvature, and those passing through construction joints. Semi-rigid conduits can be used for strands in other locations. However, when the annular strand conduits pass through the wall, they are positioned close to the outer radial reinforcement, resulting in conflicts between the reinforcement and the strand conduits, which will require adjustment in subsequent steps.

[0055] Meanwhile, the modeling model in the present application also includes the Bresenham circle drawing algorithm. The Bresenham circle drawing algorithm is suitable for generating a full circle, and its basic principle is to determine the position of the closest pixel point on the circle in an iterative manner.

[0056] In a specific embodiment, the steps of drawing a circle using the Bresenham algorithm are as follows:

[0057] Initialization: Initialize the circle's center coordinates (xc, yc) and radius r, where r is set based on the basic parameters of the circular wall. Initialize the current pixel's coordinates (x, y) to (0, r), placing it at the top of the circle. Initialize the decision parameter d to 3-2r, calculated based on the circle's equation and initial position.

[0058] Drawing and Decision-making: Draw a pixel at the current position (x, y). When x < y, if d >= 0, the next pixel is taken downward, i.e., y is decreased by 1, and the decision parameter d is updated to d + 4×(x - y) + 10. Otherwise, y remains unchanged. In both cases, x is incremented by 1, and the decision parameter d is updated to d + 6 + 4×x. When x >= y, the pixel (x, y) is directly drawn because the symmetry of the circle allows the remaining part to be obtained by symmetry.

[0059] Repeat the above drawing and decision-making steps until x >= y. At this point, the arc within 45 degrees in the first quadrant has been drawn.

[0060] Repeat: Complete the whole circle using symmetry: Due to the eight-fold symmetry of the circle, the pixel set of the whole circle can be obtained by rotating and mirroring the arc in the first quadrant. When all pixels are drawn, the algorithm ends.

[0061] This algorithm avoids performing square and square root operations at each step, thus improving efficiency. At the same time, it uses the symmetry of the circle to reduce the amount of calculation, only needing to calculate a part of the arc in the first quadrant. According to the Bresenham algorithm, the modeling model can design and model the circular structure of the annular wall, including generating the wall reinforcement for a certain arc surface of the annular wall, or generating the reinforcement for the whole annular wall. For other elements of the annular wall, they can be modeled through the above-mentioned building function information, surrounding environment information, project stage information, and interdisciplinary collaboration information.

[0062] It can be understood that using the modeling model, the basic structure model of the annular wall can be obtained according to the basic structure parameters of the annular wall, and the special-shaped structure contour model can be obtained according to the special-shaped structure parameters.

[0063] Process 103, parameter adjustment and acquisition process;

[0064] Specifically, using the adjustment model, analyze the basic structure model and the special-shaped structure contour model of the annular wall to obtain the adjustment parameters.

[0065] For the adjustment model, it includes: comparing the opening size in the special-shaped structure parameters with the preset steel bar arrangement spacing. If the opening size is not less than the preset steel bar arrangement spacing, use the three-dimensional Boolean operation model to subtract the basic structure model of the annular wall from the special-shaped structure contour model to obtain the adjustment parameters. If the opening size is less than the preset steel bar arrangement spacing, no three-dimensional Boolean operation is performed. Among them, the opening size includes: the maximum opening size and the minimum opening size. The process of comparing the opening size with the preset steel bar arrangement spacing can be understood as: according to the size (length, width, diameter) of the special-shaped structure hole in the wall, cut off the steel bars at a position not less than the hole size, otherwise, no consideration is given to cutting off the steel bars.

[0066] It should also be noted that, since prestressed steel strands are arranged inside the annular wall of the inner shell in addition to steel bars, the annular wall structure includes steel bars and prestressed steel strands in all processes involving the annular wall structure.

[0067] In one specific embodiment, during the adjustment of the annular steel strand, a positioning baseline angle for the annular steel strand is first defined. This baseline is used to locate the centerline of the steel strand, and the position of each steel strand is then determined according to the angular intervals of the baseline. As the steel strand passes through the wall, it avoids various special-shaped structures such as openings. Corners appear at these special-shaped structures, and the positions of the corners are determined by the positions of the inflection points. One end of the steel strand is drawn out from a buttress and unfolded in a two-dimensional plan, initially growing into a straight section. The straight section then unfolds to a predetermined length, with an inflection point at the end. Between the inflection points is an arc of predetermined length, extending along a fixed bending radius. Each steel strand is drawn out from a known elevation, and the positioning direction of the entire steel strand is determined by gradually calculating the path.

[0068] In one specific embodiment, during the step of adjusting the radial steel strands, the radial steel strands extend upward from the bottom. When a special-shaped structure such as a wall opening is encountered, the strands are bent to avoid it. When turning, a segmented length is drawn from a point. The segmented length consists of straight segments and arc segments. The lengths of the straight segments and the arc segments are known. The ends of the arc segment are determined by two inflection points. The length of the curved segment between the inflection points is calculated based on the elevation of the special-shaped structure.

[0069] Process 104, simulation model acquisition process;

[0070] Specifically, according to the adjustment parameters, the basic structural model of the annular wall is updated to obtain a simulation model of the annular wall, wherein the simulation model of the annular wall includes a layout model of prestressed steel strands and a layout model of steel bars.

[0071] After accounting for the irregular structure of the annular wall, the basic structural model of the annular wall is updated according to the adjusted parameters, resulting in a simulation model of the annular wall that incorporates the irregular structure. In subsequent steps, when using this model for reinforcement placement and cutting, the rebar layout and cutting methods can take into account the irregular structure in the model, thereby reducing overall construction costs. Of course, the resulting prestressed steel strand and rebar layout models after adjusting the parameters also avoid irregular structures such as openings.

[0072] Process 105, analysis and adjustment process;

[0073] Specifically, in this application, after establishing the prestressed steel strand and rebar layout models, rebar optimization is implemented. These models are analyzed to identify the positions of each prestressed steel strand and rebar. The positions of prestressed steel strands are prioritized over those of rebar. When rebar encounters a prestressed steel strand, it must avoid the prestressed steel strand position to avoid positional conflicts.

[0074] like Figure 2 As shown, if there is a position conflict between a rebar and a prestressed steel tendon, the rebar in conflict is moved by the distance between the conduits through which the two adjacent prestressed steel tendons pass minus the diameter of the conduit, so that the rebar avoids the prestressed steel tendon.

[0075] In a preferred embodiment, if there is a position conflict between a steel bar and a prestressed steel tendon, the conflicting steel bar is moved to a midpoint between the conduits through which two prestressed steel tendons adjacent to the steel bar pass.

[0076] Process 106, update process;

[0077] Specifically, the simulation model of the annular wall is updated according to the adjusted layout positions of the steel bars.

[0078] The above adjustment of the position of the steel bars in the annular wall that conflict with the position of the prestressed steel strands eliminates the need for manual adjustments on site in subsequent steps, thereby reducing construction costs.

[0079] Process 107, reinforcement scheme acquisition process;

[0080] Specifically, the reinforcement model is used to obtain the reinforcement scheme of the annular wall according to the simulation model of the annular wall.

[0081] The above considerations on the process holes in the annular wall (i.e., holes in special-shaped structures) and the conflicts between the steel strands and prestressed steel strands in the annular parts are all for the purpose of ensuring that, when reinforcing the annular wall, the steel bars avoid the process holes while reasonably avoiding the prestressed steel strands. Based on the specific conditions of the process holes, parameters such as the thickness of the protective layer, the steel bar stagger rate, the number of steel bar layers, and the steel bar end details are comprehensively considered to form an optimal reinforcement scheme.

[0082] In a specific embodiment, the reinforcement scheme of the annular wall includes: a reinforcement scheme of circumferential steel bars, radial steel bars, opening reinforcement bars of special-shaped structures, tie bars and stirrups.

[0083] The circumferential reinforcement is configured as concentric circles along the circular wall. When arranging the reinforcement model, the horizontal spacing of the circumferential reinforcement is controlled based on the simulated model of the circular wall, the thickness of the steel cover is automatically reduced, and the outline of the process holes is identified to automatically cut the steel bars at these locations.

[0084] The radial reinforcement is set to be evenly arranged. A ray is drawn from the center of the annular wall, and the outer, inner, and middle reinforcements are arranged through this ray. When arranging the reinforcement model, it is necessary to control the radial reinforcement spacing arrangement according to the simulation model of the annular wall. The arrangement basis can specifically include: the angle of ray divergence provided by the design document, and the reinforcement spacing specified in the design document; and / or: using the calculation function to input the reinforcement spacing when drawing the wall, and evenly divide the arc length of the part to calculate the position of the reinforcement and generate the reinforcement. The calculation formula is as follows (1):

[0085]

[0086] Where l is the arc length, α is the angle of the part provided in the design file, and r is the radius of the annular wall.

[0087] Both the circumferential and radial reinforcements can be arranged by inputting the spacing or angle values, reducing manual calculations and repeated comparisons, and avoiding problems such as uneven arrangement, non-centripetal arrangement, and missing or excessive reinforcement.

[0088] When arranging reinforcement in the reinforcement model, it is also necessary to identify the contours of the special-shaped structural openings based on the simulation model of the annular wall, and no wall reinforcement will be generated at the openings. In addition, if the current opening is not larger than the preset value, no reinforcement breakage will be performed during reinforcement arrangement. For example, when encountering an opening no larger than 300mm, the steel bars will not be broken when passing through the opening of this size. At the same time, after identifying the contours of the special-shaped structural openings, it is also necessary to arrange reinforcing steel bars at the openings, including opening reinforcement bars, opening tension bars, and opening stirrups, to ensure the strength and stability of the reinforcement arrangement in the opening area.

[0089] In other specific embodiments, utilizing the reinforcement model further includes identifying the thickness of the annular wall and setting the number of reinforcement layers based on the wall thickness. Reactor types of different thicknesses may have different wall thicknesses, and when arranging reinforcement, different numbers of reinforcement layers are used for walls of different thicknesses.

[0090] In this application, the reinforcement scheme can be reflected as a standardized steel bar arrangement diagram, or other forms that can display various types of steel bar arrangements. This application does not limit this.

[0091] Of course, after completing the reinforcement scheme acquisition process, this application can further include the process of verifying the reinforcement scheme and cutting materials.

[0092] Step 108 is a verification step. Specifically, the verification model is used to determine whether the layout model of the prestressed steel strands and the layout model of the reinforcement of the annular wall meet the preset design requirements.

[0093] Based on the building's design requirements and construction implementation plan, a verification model is constructed and preset design requirements are set. The verification model includes a wall verification model and an internal reinforcement verification model. The building's design requirements and construction implementation plan may include one or more of the building's structural requirements, safety requirements, economic requirements, construction feasibility requirements, durability requirements, material management requirements, technical management requirements, and business management requirements. Based on these requirements, the verification model's verification logic can be constructed, and the preset design requirements can be set to correspond to these requirements. For example, if all of the above requirements are met, the preset design requirements are considered met.

[0094] In a specific embodiment, material management requirements include: automatically exporting steel bar material requirements plan as the basis for raw material procurement, analyzing material consumption based on the model, coordinating material procurement plans, simulating resource curves and capital curves, providing support for limited material collection, and controlling material and capital limits; technical management requirements include: being used for three-dimensional technical briefings, technical plan preparation, steel bar quantity statistics, and on-site operation guidance, and making three-dimensional bar cutting more intuitive and clear; business management requirements include: due to the high degree of accuracy of the generated steel bar model, a steel bar quantity red line can be formulated to control subcontract material usage, and serve as the basis for subcontract settlement and owner settlement, providing strong data support for process settlement, quantity reporting, and cost analysis.

[0095] If the prestressed tendon layout model and the reinforcement layout model do not meet the preset design requirements, the corresponding data in the annular wall modeling model is updated based on the data in the verification results. The updated annular wall modeling model is then used to generate a new annular wall simulation model until the new prestressed tendon layout model and the new reinforcement layout model meet the preset design requirements. For example, the verification results may include which data item does not meet the preset design requirements and the current value. These values ​​are then used to update the corresponding values ​​in the annular wall modeling model.

[0096] If the layout model of the prestressed steel strands and the layout model of the steel bars meet the preset design requirements, the reinforcement scheme of the annular wall is analyzed to obtain the opening information and the required steel bar length of the annular wall. This is then used to design the steel bar cutting scheme based on the opening information, the required steel bar length, and other information.

[0097] In this process, it can be ensured that the obtained prestressed steel strand layout model and the steel bar layout model take into account the special-shaped structure of the annular wall, and also ensure that the prestressed steel strand layout model and the steel bar layout model taking into account the special-shaped structure must meet the design requirements and be usable.

[0098] Process 109, the process of obtaining the cutting model and the steel bar cutting plan;

[0099] Specifically, in the cutting model process, the cutting model can be trained based on the original steel bar length, maximum fixed length, staggered length of the steel bar arrangement, and construction node features in historical samples as training samples. This allows the cutting model to obtain a steel bar cutting plan for the annular wall based on the current annular wall opening information and required steel bar length, as well as the original steel bar length, maximum fixed length, and staggered length of the steel bar arrangement. Construction node features can be obtained based on historical construction project delivery information and only need to represent the construction features of the steel bar nodes. This is not limited in this application.

[0100] In the process of obtaining the steel bar cutting plan, the cutting model is used to obtain the steel bar cutting plan for the circular wall based on the opening information of the circular wall and the required steel bar length, as well as the original steel bar length, the longest fixed length and the staggered length of the steel bar arrangement.

[0101] In components such as walls, floor slabs, beams, and columns, due to the length of the steel bars, component dimensions, and national standards, the steel bar raw materials need to be cut and processed when the steel bars are broken. This cutting scheme is the steel bar breaking scheme. This application can use the cutting model to automatically identify the steel bars and quickly cut the components according to the reinforcement scheme.

[0102] It is understandable that, since the reinforcement scheme in this application has taken the special-shaped structure of the annular wall into account in the above process, during intelligent cutting, this application can identify these special-shaped structures according to the reinforcement scheme without limiting the size and number of identified structures. Then, the steel bars are cut according to the fixed length of the steel bars and the arrangement of the special-shaped structures. Cutting can be achieved according to the minimum and maximum cutting lengths. Through algorithm calculation, the arrangement method of less cutting and more whole reinforcement is implemented to cut the most reasonable cutting method. Cutting in this way can control the amount of steel waste and reduce production costs.

[0103] The standard length of rebar refers to the standard length obtained by cutting the rebar to a specific length during the production process. This standard is usually specified by the product standard and complies with national standards. Common standard lengths include 6 meters, 9 meters, and 12 meters.

[0104] In this application, the steel bar breaking scheme acquisition process can be as follows: Figure 3 As shown, it includes steps 301-306:

[0105] Step 301, obtaining one or more available steel bar lengths according to the opening information of the annular wall and the original steel bar length;

[0106] Specifically, the original rebar length can be understood as the length of the original rebar or the total length of the unidirectional rebar, and the annular wall opening information can be understood as information about the special-shaped structures included in the annular wall. The original rebar length can be obtained based on the specific project delivery, and the annular wall opening information can be obtained by analyzing the reinforcement scheme in the above steps.

[0107] Traverse the original reinforcement lengths, avoid the openings according to the opening information of the circular wall, and obtain one or more available reinforcement lengths.

[0108] Step 302: Filter the available steel bar lengths according to the longest fixed length, and obtain a set of available steel bar lengths after sorting them by length;

[0109] Specifically, the cut length of steel bars is specified by product standards and is a specific length of steel billets and finished steel products that meet national standards, generally 9 meters and 12 meters. Depending on the specific requirements of the construction, other specific lengths of steel bars can also be produced. In this application, the longest cut length can be preset according to the actual delivery conditions of the project. The available steel bar lengths exceeding the longest cut length are removed and sorted according to the remaining lengths to obtain a set of available steel bar lengths.

[0110] Step 303, obtaining a target required steel bar length according to the required steel bar length and the steel bar arrangement stagger length;

[0111] Specifically, when arranging steel bars, they generally need to be staggered to ensure uniform force and structural integrity. The staggered length requirements must comply with the national standard for concrete structure steel bar construction. This ensures the connection performance of the joints and avoids steel bar breakage caused by insufficient misalignment. In this application, the staggered length of the steel bar arrangement can be preset based on the angle conditions to reduce the scrap rate while meeting the national standard construction requirements. The required steel bar length can be obtained by analyzing the reinforcement scheme through the above steps. Combining the required length of a single steel bar and the staggered length of a single steel bar arrangement, the total target required length of a single steel bar can be obtained.

[0112] Step 304, traversing the target required steel bar lengths, and determining in order whether the available steel bar lengths are not less than the current target required steel bar length in the set of available steel bar lengths;

[0113] Specifically, since the lengths in the set of available rebar lengths have been sorted by length in the above steps, in this step, it is only necessary to sequentially determine whether there is an available rebar length in the set of available rebar lengths that meets the target required rebar lengths for each rebar, that is, is greater than or equal to the target required rebar length. If an available rebar length that meets the current target required rebar length is found, step 305 is executed. If no available rebar length that meets the current target required rebar length is found in the current set of available rebar lengths, step 306 is executed.

[0114] Step 305: If there is a length that is not less than the current target required steel bar length, then mark the matching result between the current available steel bar length and the current target required steel bar length, and after deleting the current available steel bar length from the set of available steel bar lengths, match the next target required steel bar length.

[0115] Specifically, if an available rebar length that meets the current target rebar length requirement is found, the match between the current available rebar length and the current target rebar length requirement is marked for statistical purposes and storage. Furthermore, the available rebar length is deleted from the current set of available rebar lengths. Then, in the set of available rebar lengths from which the marked available rebar length was deleted, the system sequentially determines whether the existing available rebar length is not less than the next target rebar length requirement, until all target rebar lengths have been traversed through the set of available rebar lengths.

[0116] Step 306: If there is no steel bar length that is not less than the target required steel bar length, an available steel bar length is updated in the set of available steel bar lengths, and the current target required steel bar length is matched again in the updated set of available steel bar lengths.

[0117] Specifically, if no available steel bar length that meets the current steel bar target requirement length is found in the set of currently available steel bar lengths, an available steel bar length is updated in the set of currently available steel bar lengths, that is, an available steel bar is added, and the current steel bar target requirement length is matched again in the updated set of available steel bar lengths, that is, the execution returns to step 304 until an available steel bar length that meets the current steel bar target requirement length is matched.

[0118] To better understand this solution, the process of the above-mentioned tendon breaking method is summarized below in a specific embodiment:

[0119] Assume that the opening information of the circular wall is "[(2, 3), (6, 8)]", which means 2-3 meters and 6-8 meters; the original steel bar length is "10", which means 10 meters; the longest fixed length is "6", which means 6 meters; the required steel bar length is "[5, 3, 7, 4]", which means 5 meters, 3 meters, 7 meters, and 4 meters; the steel bar arrangement staggered length is "0.5", which means 0.5 meter.

[0120] The original 10-meter steel bar avoids the opening "[(2, 3), (6, 8)]" and can get the available steel bar lengths [0, 2], [3, 6], [8, 10], which means 2 meters, 3 meters, and 2 meters;

[0121] Since the longest fixed length is 6 meters, [8,10] is eliminated and sorted by length to obtain the set of available steel bar lengths [3,6] and [0,2], which represent 3 meters and 2 meters respectively.

[0122] When encountering a construction section or requiring steel bar connection, add the required steel bar length and the steel bar arrangement stagger length to obtain the target required steel bar length [5.5, 3.5, 7.5, 4.5], which means 5.5 meters, 3.5 meters, 7.5 meters, and 4.5 meters.

[0123] The first target required length of 5.5 is greater than the set of available rebar lengths, 3 and 2. No rebar in the current set of available rebar lengths can meet the requirement. First, try using two rebars: adding an available rebar length [0, 2], [3, 6], [8, 10] to the current set of available rebar lengths. The resulting lengths, still avoiding the hole, are [3, 6], [0, 2]. The new set of available rebar lengths now includes available rebar lengths of "3 meters, 3 meters, 2 meters, 2 meters," which can meet the first requirement of 5.5 meters. The remaining requirements are 3.5 meters, 7.5 meters, and 4.5 meters.

[0124] Repeat the above rib-breaking steps to match the remaining requirements until all requirements are met.

[0125] It is understandable that the above embodiment is only an example to illustrate the process of the tendon breaking method of the present application. In actual application, the data will be more complicated.

[0126] According to the reinforcement layout method for the annular wall of the nuclear island inner shell provided in this application, before the reinforcement is laid, the special-shaped structure in the annular wall is automatically considered, and the conflict problem when laying the reinforcement and the steel bundle is solved. While greatly improving the efficiency of reinforcement layout, it also greatly reduces the resource waste caused by subsequent reinforcement layout and broken reinforcement, thereby reducing the overall construction cost.

[0127] In a second aspect, the present application further proposes a nuclear island inner shell annular wall, the structure of which is constructed using the reinforcement layout method for the nuclear island inner shell annular wall described in the first aspect above.

[0128] In a third aspect, the present application further proposes a nuclear power plant, which includes the nuclear island inner shell annular wall described in the second aspect above.

[0129] The technical problems that can be solved and the technical effects that can be achieved by the annular walls and nuclear power plants provided in the second and third aspects of this application are the same as the reinforcement layout method of the nuclear island inner shell annular wall provided in the first aspect above, and will not be repeated here.

[0130] The preferred embodiments of the present application are described in detail above. However, the present application is not limited to the specific details of the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the scope of protection of the present application.

[0131] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner unless there is any contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0132] In addition, the various embodiments of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A method for laying out reinforcement bars for an annular wall of a nuclear island inner shell, characterized in that: The method comprises: an annular wall parameter acquisition step, acquiring the parameters of the annular wall, wherein the parameters of the annular wall include basic structural parameters and special-shaped structural parameters of the annular wall; A basic structure model and a special-shaped structure outline model acquisition step, using a modeling model to obtain the basic structure model of the annular wall and the special-shaped structure outline model of the annular wall according to the basic structure parameters and special-shaped structure parameters of the annular wall; the modeling model is constructed using a BIM tool; an adjustment parameter acquisition step, using the adjustment model to analyze the basic structural model of the annular wall and the contour model of the special-shaped structure to obtain adjustment parameters; The adjustment parameter acquisition process includes: Compare the opening size in the special-shaped structure parameters with the preset steel bar arrangement spacing, If the opening size is not less than the preset steel bar arrangement spacing, the basic structural model of the annular wall is subtracted from the contour model of the special-shaped structure using a three-dimensional Boolean operation model to obtain an adjustment parameter; a simulation model acquisition step of updating the basic structural model of the annular wall according to the adjustment parameters to obtain a simulation model of the annular wall, wherein the simulation model of the annular wall includes a layout model of prestressed steel strands and a layout model of steel bars; an analysis and adjustment step, analyzing the layout model of the prestressed steel tendons and the layout model of the steel bars, and if there is a position conflict between the steel bars and the prestressed steel tendons, moving the conflicting steel bars by a distance between the conduits through which the two adjacent prestressed steel tendons pass, minus the diameter of the conduits, so that the steel bars avoid the prestressed steel tendons; an updating step of updating the simulation model of the annular wall according to the adjusted layout positions of the steel bars; and The reinforcement scheme obtaining step uses the reinforcement model to obtain the reinforcement scheme of the annular wall according to the updated simulation model of the annular wall.

2. The method for laying out reinforcement bars of the nuclear island inner shell annular wall according to claim 1, characterized in that: The basic structure model acquisition process includes: By using the modeling model and according to the basic structural parameters of the annular wall, the BIM tool is used to sequentially construct concrete components, prestressed steel strands and steel bars to obtain a basic structural model of the annular wall.

3. The method for laying out reinforcement bars of the annular wall of the nuclear island inner shell according to claim 1, characterized in that: In the analysis and adjustment process, if there is a positional conflict between a steel bar and a prestressed steel strand, the conflicting steel bar is moved to a midpoint between the conduits through which two adjacent prestressed steel strands pass.

4. The method for laying out reinforcement bars of the annular wall of the nuclear island inner shell according to claim 1, characterized in that: After the reinforcement scheme acquisition step, the method further includes: A verification step, constructing a verification model and setting preset design requirements based on the design requirements and construction implementation plan of the building, and using the verification model to determine whether the layout model of the prestressed steel tendons and the layout model of the steel bars meet the preset design requirements; If not, the corresponding data in the modeling model is updated according to the data in the verification result, and the updated modeling model is used to obtain a new simulation model of the annular wall until the new prestressed steel strand layout model and the new steel bar layout model meet the preset design requirements.

5. The method for laying out reinforcement bars of the annular wall of the nuclear island inner shell according to claim 1, characterized in that: After the reinforcement scheme acquisition step, the method further includes: The cutting model process trains the cutting model based on the original steel bar length, the longest fixed length, the steel bar arrangement staggered length, and the construction node features; and The reinforcement cutting plan acquisition process uses the trained cutting model to obtain the reinforcement cutting plan for the circular wall based on the opening information of the circular wall and the required reinforcement length, as well as the original reinforcement length, the longest fixed length, and the staggered length of the reinforcement arrangement.

6. The method for laying out reinforcement bars of the nuclear island inner shell annular wall according to claim 5, characterized in that: The steel bar cutting plan obtaining process includes: Obtaining one or more available steel bar lengths according to the opening information of the annular wall and the original steel bar length; The available steel bar lengths are screened according to the longest fixed length, and sorted by length to obtain a set of available steel bar lengths; Obtaining a target required steel bar length according to the required steel bar length and the steel bar arrangement stagger length; and Traversing the target required steel bar length, in the set of available steel bar lengths, determining in order whether the available steel bar length is not less than the current target required steel bar length, If there is a steel bar length that is not less than the current target required length, then mark the matching result of the current available steel bar length and the current target required length, and after deleting the current available steel bar length from the set of available steel bar lengths, match the next target required length of the steel bar; If there is no steel bar length that is not less than the target required length, an available steel bar length is updated in the set of available steel bar lengths, and the current target required length of the steel bar is matched again in the updated set of available steel bar lengths.

7. A nuclear island inner shell annular wall, the nuclear island inner shell annular wall being constructed by the reinforcement layout method for the nuclear island inner shell annular wall according to any one of claims 1 to 6.

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