Integrated Positioning and Reinforcement Construction Method for Reinforcing Bars and Scaffolds in the Raft Foundation Wall of Nuclear Island

Abstract

This invention discloses an integrated positioning and reinforcement construction method for reinforcing bars and supports in nuclear island raft foundation walls. It relates to the field of nuclear power plant construction technology, integrating the measurement, positioning, correction, and fixing of reinforcing bars with support reinforcement. This completes all operations from layout to the formation of a complete positioning and reinforcement framework in one go, eliminating the process intervals and gaps that exist in traditional methods where reinforcing bar positioning and support erection are separate. It avoids displacement of reinforcing bars due to external disturbances when the supports are not yet installed or only temporarily supported, ensuring that the reinforcing bars are constantly constrained by multiple spatial components—main connecting components, diagonal bracing components, horizontal connecting components, and reinforcing bar positioning rods—throughout the entire concrete pouring and vibration process. This significantly improves the accuracy of position and verticality, ensuring that the positioning accuracy consistently meets the stringent quality requirements of nuclear island raft foundations. Furthermore, it eliminates the need for re-measurement and repeated adjustments after the supports are erected separately, resulting in more compact process connections and significantly improved construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of nuclear power plant construction technology, and in particular to a construction method for integrated positioning and reinforcement of the reinforcing bars and supports for the raft foundation wall of a nuclear island. Background Technology

[0002] Nuclear power projects, as major national energy infrastructure, have extremely stringent requirements for construction quality and precision. The raft foundation of the nuclear island, as one of the most important foundation structures of a nuclear power plant, directly affects the overall safety and stability of the superstructure through the construction quality of its wall reinforcement. In early nuclear power plant construction, wall reinforcement construction relied mainly on manual measurement and positioning, supplemented by simple timber or steel pipe supports, resulting in low construction precision and poor quality stability. With the continuous development of nuclear power technology and the increasing demands for nuclear safety, the industry has gradually introduced more refined measurement methods and positioning tools, and begun to explore construction methods that combine reinforcement positioning with support reinforcement. In recent years, with the accumulation of experience in nuclear island engineering construction and continuous improvement of construction techniques, the integrated positioning and reinforcement construction technology of nuclear island raft foundation wall reinforcement and support has gradually become an important research direction for improving the construction quality of nuclear island projects.

[0003] Currently, the construction of reinforcing bars for the raft foundation walls of nuclear islands typically employs the following method: First, surveyors measure and mark the wall positions on the raft foundation reinforcement surface to determine the planar positions of the reinforcing bars; then, the reinforcing bars are installed one by one according to the design drawings, and the verticality of the bars is manually corrected using tools such as plumb bobs or straightedges; after correction, the reinforcing bars are individually supported and reinforced using steel pipe supports or temporary fixing devices to prevent displacement during concrete pouring. The above-mentioned reinforcing bar positioning and support erection operations are usually carried out independently, belonging to different procedures. After construction is completed, the reinforcing bar positions are re-measured and locally adjusted.

[0004] However, in the construction of reinforcement bars for the raft foundation wall of the nuclear island, the existing technology separates the positioning of the reinforcement bars from the support reinforcement, which is complicated and has low construction efficiency. Moreover, the lack of effective coordination and constraint between the two makes the reinforcement bars susceptible to displacement or tilting during the concrete pouring and vibration process, and the positioning accuracy is difficult to guarantee stably. Summary of the Invention

[0005] The main objective of this invention is to propose an integrated positioning and reinforcement construction method for reinforcing bars and supports in nuclear island raft foundation walls. This method aims to solve the technical problems in existing technologies where reinforcing bar positioning and support reinforcement are separated, resulting in cumbersome procedures, low construction efficiency, and a lack of effective coordination between the two. Consequently, the reinforcing bars are easily disturbed and displaced or tilted during concrete pouring and vibration, making it difficult to ensure stable positioning accuracy.

[0006] To achieve the above objectives, in a first aspect, the present invention proposes a construction method for integrated positioning and reinforcement of reinforcing bars and supports in the wall of a nuclear island raft foundation, comprising the following steps: The location of the wall to be constructed is measured and marked on the surface of the raft foundation reinforcement to determine the wall reinforcement insertion area; wherein, the wall axis, edge line and multiple reinforcement control points are placed in the wall reinforcement insertion area; Main connecting components are arranged within the wall reinforcement area; wherein, the main connecting components are located on the same side of all the reinforcement control points, and the main connecting components are made of C32mm steel bars or φ32mm steel pipes; A wall insert is installed at each of the aforementioned insert control points, and all the wall inserts are temporarily fixed to the main connecting component; wherein, all the wall inserts are fixedly connected to the main connecting component. The position and verticality of the wall reinforcement bars are corrected, and the corrected wall reinforcement bars are tied and fixed to the main connecting component and the steel reinforcement skeleton of the raft foundation respectively; Diagonal bracing members and horizontal connecting members are provided in the area of ​​the wall reinforcement bars to form spatial constraints on the wall reinforcement bars; A steel bar positioning rod is tied to the reinforcing bar in the wall, and the position of the steel bar positioning rod is corrected to complete the integrated positioning and reinforcement operation.

[0007] The technical solution of this invention involves first measuring and laying out the wall reinforcement area on the raft foundation reinforcement surface, and then setting the wall axis, edge lines, and multiple reinforcement control points to provide a precise planar positioning basis for the wall reinforcement to be installed. Then, within the wall reinforcement area, a main connecting component made of C32mm steel bars or φ32mm steel pipes is laid out on the same side of all reinforcement control points. Wall reinforcements are then placed at each reinforcement control point, and all wall reinforcements are temporarily fixed to the main connecting component. This connects the originally scattered and independent reinforcements into a whole during the initial positioning stage, and the relative positional relationship between the reinforcements is uniformly constrained by the main connecting component. This changes the situation in existing construction where reinforcements are positioned and temporarily supported one by one, resulting in inconsistent positioning benchmarks and a lack of coordinated constraints between reinforcements.

[0008] During the calibration process, the main connecting component is used as the longitudinal positioning and force transmission benchmark to perform overall calibration of the position and verticality of the wall reinforcement bars. After calibration, each wall reinforcement bar is tied and fixed to the main connecting component and the steel reinforcement skeleton of the raft foundation, so that the reinforcement bars are reliably embedded at the bottom through the steel reinforcement skeleton of the raft foundation. At the same time, the reinforcement bars achieve multi-point force transmission and continuous constraint along the longitudinal direction through the main connecting component, avoiding the problem that the reinforcement bars are prone to swaying under the action of vibration force when only the bottom is fixed and there is no effective lateral constraint at the top.

[0009] Subsequently, diagonal bracing and horizontal connecting components are installed in the wall reinforcement area to apply lateral and horizontal limiting effects to the wall reinforcement group that has been tied and fixed. This allows the reinforcement, main connecting components, diagonal bracing, and horizontal connecting components to form a three-dimensional spatial constraint framework. This framework provides the reinforcement group with the overall stiffness and stability required to resist lateral pressure, impact force, and vibration disturbance from different directions during subsequent concrete pouring and vibration, thereby significantly reducing the possibility of the reinforcement shifting or tilting.

[0010] Finally, steel positioning rods are tied to the wall reinforcement bars and their positions are corrected. The positioning rods are used to precisely lock the top spacing of each reinforcement bar, so that the positioning of the reinforcement bars is reliably rigidly supported throughout the entire height range, further consolidating the final positioning accuracy of the wall reinforcement bars.

[0011] This construction method integrates the measurement, positioning, correction, and fixing of reinforcing bars with the reinforcement of the support structure, completing all operations from layout to the formation of a complete positioning and reinforcement framework in one go. This eliminates the process intervals and gaps that exist when reinforcing bar positioning and support erection are separate operations in traditional processes. It also avoids displacement of reinforcing bars due to external disturbances when the support is not yet installed or only temporarily supported, ensuring that the reinforcing bars are always subject to multiple spatial constraints from the main connecting components, diagonal bracing components, horizontal connecting components, and reinforcing bar positioning rods throughout the entire process of concrete pouring and vibration. The position and verticality accuracy are significantly improved, and the positioning accuracy can stably meet the stringent quality requirements of the nuclear island raft foundation. At the same time, since positioning and reinforcement are completed simultaneously, the re-measurement and repeated adjustments after the support is erected separately are eliminated, resulting in a more compact process and significantly improved construction efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0013] Figure 1 The flowchart illustrates the integrated positioning and reinforcement construction method for the nuclear island raft foundation wall reinforcement and support provided by this invention.

[0014] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0017] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0018] This invention proposes a construction method for integrated positioning and reinforcement of the reinforcing bars and supports in the raft foundation wall of a nuclear island.

[0019] Please see Figure 1 To facilitate understanding, this integrated positioning and reinforcement construction method for the reinforcing bars and supports of the nuclear island raft foundation wall includes the following steps: S100. Measure and mark the location of the wall to be constructed on the raft foundation reinforcement surface to determine the wall reinforcement insertion area; wherein, the wall axis, edge line and multiple reinforcement control points are placed in the wall reinforcement insertion area.

[0020] Specifically, before formally carrying out the wall reinforcement installation, it is necessary to first complete the measurement and layout work on the raft foundation reinforcement surface in order to accurately determine the planar position of the wall reinforcement area.

[0021] When conducting surveying and setting out, the wall axis and edge lines can be accurately transferred and marked on the raft foundation reinforcement surface using surveying instruments such as total station or precision theodolite, based on the construction drawings and surveying control network.

[0022] It is important to clarify that, in this embodiment, the wall axis is used to determine the central positioning reference for the wall reinforcement bars, and the edge line is used to define the boundary range of the wall section. Together, they constitute the coordinate reference system for the planar positioning of the reinforcement bars. Based on the wall axis and edge line, multiple reinforcement bar control points are further determined within the reinforcement bar area. The position of each control point corresponds to the actual installation position of the wall reinforcement bars, and the spacing between the control points should strictly correspond to the spacing of the wall reinforcement bars in the design drawings. After the measurement and layout work is completed, the coordinate positions of each reinforcement bar control point should be checked to ensure that the deviation meets the strict requirements of the nuclear island project for planar positioning accuracy, so as to provide a reliable positioning basis for the subsequent layout of main connecting components and installation of wall reinforcement bars.

[0023] S200. Main connecting components are arranged in the wall reinforcement area; wherein, the main connecting components are located on the same side of all the reinforcement control points, and the main connecting components are made of C32mm steel bars or φ32mm steel pipes.

[0024] Specifically, after completing the measurement and setting out and confirming the position of each reinforcing bar control point, the main connecting components are laid out in the reinforcing bar area of ​​the wall along the arrangement direction of the reinforcing bar control points. The main connecting components are arranged on the same side of all reinforcing bar control points to form a horizontal reference connection system extending along the wall direction.

[0025] When laying out the main connecting components, the installation position of the main connecting components should correspond to the plane position of the reinforcing bar control point, and the straightness of the main connecting components in the horizontal plane should meet the construction accuracy requirements.

[0026] It is important to note that the main connecting components are made of C32mm steel bars or φ32mm steel pipes. In actual construction, the appropriate choice can be made based on site conditions and material availability: when C32mm steel bars are used as the main connecting components, they possess sufficient axial stiffness and bending resistance, enabling them to resist lateral bending deformation caused by the weight of the reinforcing bars and construction operations during the installation of the wall reinforcement; when φ32mm steel pipes are used as the main connecting components, the hollow cross-section structure of the steel pipe allows it to maintain high stiffness while having a lighter self-weight, facilitating on-site installation, and its circular cross-section is beneficial for forming stable binding and fixing points with the wall reinforcement. In this embodiment, using either C32mm steel bars or φ32mm steel pipes can achieve unified connection and establishment of positioning benchmarks for all reinforcement control points, thereby providing overall constraint support for subsequent temporary fixing and position correction of the wall reinforcement.

[0027] The main connecting component is arranged on the same side of all the wall reinforcement control points. On the one hand, it can form a fixed connection relationship with all the wall reinforcements and the main connecting component in the same direction, avoiding the problem of inconsistent positioning benchmarks caused by different fixing methods of the reinforcements. On the other hand, as an integral component that runs through all the reinforcement control points, the main connecting component can effectively connect the reinforcement control points in the horizontal direction, so that subsequent correction and fixing work can be carried out under a unified benchmark, fundamentally improving the overall positioning coordination of the reinforcements.

[0028] S300. Install a wall insert at each of the wall insert control points and temporarily fix all the wall inserts to the main connecting member; wherein, all the wall inserts are fixedly connected to the main connecting member.

[0029] Specifically, after the main connecting components are laid out, wall dowels are installed sequentially at each dowel control point. When installing the wall dowels, the lower end of each dowel should be aligned with the corresponding dowel control point, and the insertion depth of the wall dowel should be ensured to meet the design requirements.

[0030] After the alignment and installation of each wall reinforcement bar is completed, it should be temporarily fixed to the main connecting component immediately. Temporary fixing can be achieved by binding the wall reinforcement bar to the main connecting component with steel wire to ensure that the wall reinforcement bar does not collapse or shift significantly in the temporary state, so as to facilitate the smooth progress of subsequent correction work.

[0031] It is important to clarify that all wall reinforcement bars are fixedly connected to the main connecting members, meaning that all wall reinforcement bars are connected in series in the horizontal direction through the main connecting members. This integrated temporary fixing method ensures that all wall reinforcement bars maintain a relatively stable spatial position under the constraint of the main connecting members before the correction work begins, avoiding the positional dispersion problem caused by the independence of each individual temporary support.

[0032] Meanwhile, since the main connecting components are arranged on the same side of all the wall reinforcement control points, the temporary fixing points between each wall reinforcement and the main connecting components are arranged continuously in space, which enables the main connecting components to provide uniform lateral constraints on all wall reinforcements, creating favorable conditions for subsequent correction and binding fixing operations.

[0033] S400. Correct the position and verticality of the wall reinforcement bars, and tie and fix the corrected wall reinforcement bars to the main connecting member and the steel reinforcement skeleton of the raft foundation respectively.

[0034] Specifically, after the temporary fixing of all wall reinforcement bars and main connecting components is completed, the planar position and verticality of each wall reinforcement bar need to be corrected one by one.

[0035] When performing position correction, a total station or theodolite can be used to remeasure the plane coordinates of each wall reinforcement bar and compare them with the coordinates of the reinforcement bar control points determined during the surveying and layout stage. Wall reinforcement bars with plane deviations can be corrected to ensure that their plane position deviations are controlled within the allowable range specified by the nuclear island project.

[0036] When performing verticality correction, a plumb bob or precision level can be used to detect the vertical deviation of each wall reinforcement bar. The verticality deviation can be corrected by adjusting the connection position or angle between the reinforcement bar and the main connecting component, ensuring that the verticality of each wall reinforcement bar meets the strict requirements of the nuclear island project for the positioning accuracy of vertical components.

[0037] To further clarify, during the correction process, the main connecting component can continuously provide constraints on each wall reinforcement bar in the horizontal direction, preventing the position of adjacent reinforcement bars from changing when a certain reinforcement bar is being corrected, thereby ensuring that the correction operation has good independence and stability.

[0038] After completing the position and verticality correction, the corrected wall reinforcement bars are tied and fixed to the main connecting members and the raft foundation's steel reinforcement cage. The tying and fixing to the main connecting members ensures that the wall reinforcement bars are integrally constrained horizontally, while the tying and fixing to the raft foundation's steel reinforcement cage provides stable vertical anchorage support for the lower ends of the wall reinforcement bars. Together, these two actions ensure that the corrected wall reinforcement bars maintain their accurate spatial position without significant deviation or tilting until the subsequent diagonal bracing and horizontal connecting members are installed.

[0039] S500. Diagonal bracing members and horizontal connecting members are provided in the wall reinforcement area to form spatial constraints on the wall reinforcement.

[0040] Specifically, after the wall reinforcement bars are corrected and tied, diagonal bracing members and horizontal connecting members are further installed in the wall reinforcement bar area to form a three-dimensional overall constraint on all wall reinforcement bars through the spatial arrangement of the members.

[0041] When setting up diagonal bracing components, the diagonal bracing components should be diagonally supported between the wall dowel bars and the raft foundation reinforcement cage at a certain angle, or diagonally connected between the wall dowel bars and the main connecting components. The direction of the diagonal bracing should cover the main direction in which the wall dowel bars may shift, so as to ensure that the wall dowel bars can obtain effective restraint support in all stress directions during the concrete pouring and vibration process.

[0042] When setting up horizontal connecting components, the horizontal connecting components should be set up in layers at reasonable vertical spacing within the vertical height range of the wall reinforcement bars, connecting adjacent wall reinforcement bars to each other in the horizontal direction. This allows each wall reinforcement bar to form an integral rigid connection at different vertical positions through the horizontal connecting components, further enhancing the ability of the entire reinforcement bar system to resist deformation in the horizontal direction.

[0043] It is important to clarify that the diagonal bracing members and horizontal connecting members are arranged in concert to form a spatial constraint system for the wall reinforcement bars. The diagonal bracing members primarily bear the lateral impact loads from the vibration of concrete pouring, preventing the wall reinforcement bars from tilting as a whole. The horizontal connecting members mainly restrict the relative displacement between adjacent wall reinforcement bars, preventing local spacing changes due to vibration disturbance. The two components work together to fundamentally solve the problem in existing technologies where reinforcement bar positioning and support reinforcement are separated and lack coordinated constraint, leading to easy displacement or tilting of reinforcement bars during concrete pouring and vibration. This ensures that the wall reinforcement bars maintain accurate spatial position throughout the entire concrete pouring process.

[0044] S600. Tie the steel bar positioning rod to the wall reinforcement bar and correct the position of the steel bar positioning rod to complete the integrated positioning and reinforcement operation.

[0045] Specifically, after completing the installation of the diagonal bracing members and horizontal connecting members and confirming that the spatial constraint system of the wall reinforcement bars has been constructed, steel positioning rods are further tied to the wall reinforcement bars.

[0046] When tying the rebar positioning rods, they should be tied to the specified positions of the wall reinforcement bars according to the design drawings. The direction of the rebar positioning rods should correspond to the direction of the rebar arrangement in the wall section to provide a positioning reference for the subsequent tying and installation of the upper wall reinforcement bars.

[0047] After the binding work is completed, the position of the rebar positioning rod should be corrected. The plane coordinates and vertical elevation of the rebar positioning rod should be checked with measuring instruments to ensure that the positional deviation meets the accuracy requirements specified in the nuclear island project. If necessary, the rebar positioning rod with deviation exceeding the limit should be adjusted and re-bound and fixed.

[0048] It is important to clarify that by binding the rebar positioning rods to the wall reinforcement bars and completing the position correction, on the one hand, the final positioning accuracy of the entire wall reinforcement bar system can be further verified, providing a final layer of accuracy assurance for the overall spatial position of the system; on the other hand, the setting of the rebar positioning rods enables the entire integrated reinforcement system of reinforcement bars and supports to provide a direct positioning basis for the subsequent binding and installation of the upper structure reinforcement bars after the positioning and reinforcement work is completed. This effectively transfers the positioning accuracy of the reinforcement bar stage to the upper structure construction stage, ensuring the overall construction quality and safety of the nuclear island project's upper structure.

[0049] In this embodiment, by first measuring and setting out the reinforcing steel surface of the raft foundation, the area for wall reinforcement is determined, and the wall axis, edge lines, and multiple reinforcement control points are set up, so that the wall reinforcement to be installed has a precise planar positioning basis. Then, within the area of ​​wall reinforcement, a main connecting member made of C32mm steel bar or φ32mm steel pipe is laid on the same side of all reinforcement control points. Then, wall reinforcements are placed at each reinforcement control point, and all wall reinforcements are temporarily fixed to the main connecting member. This makes the originally scattered and independent reinforcements connected into a whole by the main connecting member in the initial positioning stage. The relative positional relationship between the reinforcements is uniformly constrained by the main connecting member, which changes the situation of inconsistent positioning benchmarks and lack of coordination between reinforcements caused by the individual placement and temporary support of reinforcements in the existing construction.

[0050] During the calibration process, the main connecting component is used as the longitudinal positioning and force transmission benchmark to perform overall calibration of the position and verticality of the wall reinforcement bars. After calibration, each wall reinforcement bar is tied and fixed to the main connecting component and the steel reinforcement skeleton of the raft foundation, so that the reinforcement bars are reliably embedded at the bottom through the steel reinforcement skeleton of the raft foundation. At the same time, the reinforcement bars achieve multi-point force transmission and continuous constraint along the longitudinal direction through the main connecting component, avoiding the problem that the reinforcement bars are prone to swaying under the action of vibration force when only the bottom is fixed and there is no effective lateral constraint at the top.

[0051] Subsequently, diagonal bracing and horizontal connecting components are installed in the wall reinforcement area to apply lateral and horizontal limiting effects to the wall reinforcement group that has been tied and fixed. This allows the reinforcement, main connecting components, diagonal bracing, and horizontal connecting components to form a three-dimensional spatial constraint framework. This framework provides the reinforcement group with the overall stiffness and stability required to resist lateral pressure, impact force, and vibration disturbance from different directions during subsequent concrete pouring and vibration, thereby significantly reducing the possibility of the reinforcement shifting or tilting.

[0052] Finally, steel positioning rods are tied to the wall reinforcement bars and their positions are corrected. The positioning rods are used to precisely lock the top spacing of each reinforcement bar, so that the positioning of the reinforcement bars is reliably rigidly supported throughout the entire height range, further consolidating the final positioning accuracy of the wall reinforcement bars.

[0053] This construction method integrates the measurement, positioning, correction, and fixing of reinforcing bars with the reinforcement of the support structure, completing all operations from layout to the formation of a complete positioning and reinforcement framework in one go. This eliminates the process intervals and gaps that exist when reinforcing bar positioning and support erection are separate operations in traditional processes. It also avoids displacement of reinforcing bars due to external disturbances when the support is not yet installed or only temporarily supported, ensuring that the reinforcing bars are always subject to multiple spatial constraints from the main connecting components, diagonal bracing components, horizontal connecting components, and reinforcing bar positioning rods throughout the entire process of concrete pouring and vibration. The position and verticality accuracy are significantly improved, and the positioning accuracy can stably meet the stringent quality requirements of the nuclear island raft foundation. At the same time, since positioning and reinforcement are completed simultaneously, the re-measurement and repeated adjustments after the support is erected separately are eliminated, resulting in a more compact process and significantly improved construction efficiency.

[0054] In one embodiment, step S100 includes: S110. Transfer the wall structure axis to the raft foundation reinforcement surface.

[0055] Specifically, before formally laying out the wall reinforcement area, it is necessary to first transfer the wall structure axis from the construction control network to the raft foundation reinforcement surface.

[0056] When conducting axis transfer, a total station or precision theodolite can be used to accurately project the coordinate data of the wall structure axis to the corresponding position on the raft foundation reinforcement surface based on the construction plane control network and elevation control benchmark established on site. The axis position is then clearly marked on the raft foundation reinforcement surface by using ink lines or marker points.

[0057] S120. Lay out the two side lines of the raft foundation wall according to the wall design thickness.

[0058] Specifically, after the wall structure axis is measured and its accuracy is confirmed, based on the wall thickness dimensions indicated in the construction drawings, and taking the wall structure axis as a reference, half the wall thickness distance is measured on both sides of the axis, and the two side lines of the raft foundation wall are marked on the raft foundation reinforcement surface.

[0059] When laying out the side lines, it should be ensured that the side lines are strictly parallel to the axis of the wall structure, and the spacing between the side lines should be completely consistent with the design thickness of the wall. The side lines should be marked on the raft foundation reinforcement surface with continuous and clear ink lines to ensure that the position of the side lines is intuitively identifiable and easy to refer to in subsequent construction operations.

[0060] S130. Using the wall axis or edge line as a reference, mark multiple control points for the reinforcing bars.

[0061] Specifically, after the wall structure axis and the two side lines are laid out, the position of each control point of the reinforcing bar is measured along the axis or side line direction according to the spacing of the reinforcing bars specified in the construction drawings, based on the wall axis or side line, and marked one by one on the raft foundation reinforcement surface.

[0062] When marking the control points for reinforcing bars, the position of each control point should strictly correspond to the plane coordinates of the corresponding reinforcing bars in the design drawings. The control points can be marked by using paint marks or chalk dots in conjunction with short reinforcing bar heads for positioning, so as to ensure that each control point is clearly marked and not easily disappeared in subsequent operations.

[0063] It is important to clarify that both using the wall axis as a reference and using the edge line as a reference for marking the control points of the reinforcing bars are effective operating methods in actual construction, and the appropriate method can be flexibly selected based on site conditions and visibility. When the wall axis is clearly visible on the surface of the raft foundation reinforcement and is convenient for measurement, the wall axis should be used as the reference for marking the control points. When the axis is obscured by the reinforcement or the operating space is limited, the edge line can be used as the reference for measurement and marking. Both reference methods can ultimately achieve accurate positioning of each reinforcing bar control point.

[0064] S140. Verify and confirm the axis, edge lines and all the control points of the reinforcing bars after the layout is completed to obtain the reinforcing bar area of ​​the wall.

[0065] Specifically, after marking the wall structure axis, side lines, and all control points for reinforcing bars, a systematic review and confirmation of all the above-mentioned layout results must be carried out before the subsequent reinforcing bar installation work is carried out.

[0066] During the verification process, dedicated surveyors should use measuring instruments and methods independent of the layout work to re-measure the planar position of the wall structure axis, the spacing and parallelism of the two side lines, and the coordinate positions of all reinforcing bar control points one by one. The re-measurement results should be compared with the design drawings and control network coordinates to determine whether all measurement deviations are within the allowable range.

[0067] It is important to clarify that the aforementioned verification and confirmation work should be documented in measurement records, which must be reviewed and signed by the technical supervisor before serving as the basis for confirming the wall reinforcement area. The verified and confirmed axis lines, edge lines, and reinforcement control points together define the complete scope of the wall reinforcement area. This area serves as the positioning foundation for the subsequent layout of main connecting components and the installation of all wall reinforcements, and its accuracy directly affects the final construction quality of the entire integrated positioning and reinforcement operation.

[0068] For any deviations found to be excessive in the axis, edge line, or reinforcement control point during the review, corrections must be made in a timely manner and the measurement must be repeated until all review indicators meet the accuracy requirements. Only then can the reinforcement area of ​​the wall be confirmed and the next construction step be carried out, thereby ensuring the overall positioning accuracy of the reinforcement construction of the nuclear island raft foundation wall.

[0069] In one embodiment, step S130 further includes: Additional verification control points were set up at corners, junctions, and the edges of openings.

[0070] Specifically, after marking the standard control points for reinforcing bars, it is necessary to add additional control points for special areas within the reinforcing bar area of ​​the wall. These special areas mainly include: corners where the wall plane changes direction, junctions between different walls, and the edges of openings such as doorways and reserved openings.

[0071] It is important to note that the three types of locations illustrated in this embodiment represent areas with complex geometric relationships and high difficulty in positioning control within the wall reinforcement area. Corner locations involve the intersection of two wall axes; if the position of the reinforcement control point at this location is deviated, the relative positional relationship between the wall reinforcements in the two directions may become inaccurate, thus affecting the geometric dimensional accuracy of the wall section at the corner. Intersection locations involve the convergence of multiple wall axes in the same plane; if the positioning at this location is inaccurate, it may cause abnormal spacing or mutual interference among the wall reinforcements within the intersection area. At the edge of openings, the presence of the opening causes a local interruption in the reinforcement arrangement; if the reinforcement control points at this location lack additional verification methods, cumulative deviations can easily occur due to a reduction in local reference benchmarks.

[0072] To further clarify, when adding verification control points, the location of the verification control points should be determined by measuring the distances from the axes or edges in two or more directions based on the dimensional relationships of the corresponding parts in the construction drawings. This is to verify the accuracy of the control point location through independent measurement results from different directions, rather than relying solely on measurement results from a single direction.

[0073] More specifically, for the verification control points at corner locations, the positions of the control points should be independently measured along the wall axis on both sides of the corner. The accuracy of the corner control point's positioning should be judged by the degree of agreement between the coordinates of the two independent measurements. For the verification control points at intersection locations, the distances should be measured and checked separately with the axis of each intersecting wall as a reference to ensure that the relative positions of the wall reinforcement control points in the intersection area meet the requirements of the drawings. For the verification control points at the edges of openings, the distance between the edge control points and the opening boundary should be measured from both sides of the opening, taking into account the net width of the opening and the position of the opening's centerline. The accuracy of the edge control point's position should be confirmed through two-way verification.

[0074] In one embodiment, step S200 includes: S210. Based on the wall length and the spacing of the reinforcing bars, the main connecting component is centered in the wall reinforcing bar area along the wall length direction.

[0075] Specifically, after the measurement and layout of the wall reinforcement area are completed and verified, the arrangement position of the main connecting component in the wall reinforcement area is determined according to the wall length and the spacing distribution of the reinforcement control points, and the main connecting component is arranged in the center along the length of the wall.

[0076] When determining the central position of the main connecting component, the total length of the distribution section of the reinforcing bar control points in the wall length direction should be measured based on the arrangement range of all reinforcing bar control points in the wall reinforcing bar area. The longitudinal start and end range of the main connecting component should be determined based on the midpoint of this total length to ensure that the main connecting component can cover the arrangement section of all reinforcing bar control points and that there are no cases of suspension at both ends or insufficient local coverage.

[0077] It is particularly important to clarify that centering the main connecting member along the length of the wall ensures a symmetrical support distribution relative to the wall reinforcement area. This allows for a uniform distribution of reaction forces at both support points when the main connecting member is subjected to lateral forces transmitted from the wall reinforcement. This avoids situations where the main connecting member is offset, resulting in force concentration at one end and insufficient constraint at the other. Consequently, it ensures the entire main connecting member maintains a stable horizontal position during construction, providing a consistent and reliable positioning reference for the wall reinforcement. The centering of the main connecting member is also directly related to the spacing of the reinforcement bars. When determining the placement of the main connecting member, the correspondence between its longitudinal position and the control points of each reinforcement bar should be checked simultaneously. This ensures that the fixed nodes corresponding to the control points of each reinforcement bar on the main connecting member fall within the effective length of the main connecting member, and that no edge reinforcement control points extend beyond the end of the main connecting member. This guarantees that all wall reinforcement bars can form an effective fixed connection with the main connecting member.

[0078] S220. Connect and fix the main connecting component to the raft foundation steel reinforcement skeleton.

[0079] Specifically, after the main connecting components are centered and positioned, they need to be connected and fixed to the steel reinforcement cage of the raft foundation so that the main connecting components maintain a stable spatial position during the installation of wall reinforcement bars and subsequent construction, and do not undergo overall translation or vertical displacement.

[0080] When connecting and fixing the main connecting member to the raft foundation reinforcement cage, steel wire binding can be used to bind the main connecting member to the corresponding longitudinal or transverse reinforcement in the raft foundation reinforcement cage at multiple positions along its length. The spacing of the binding points should be reasonably determined according to the total length of the main connecting member and the stress condition to ensure that the main connecting member does not undergo significant bending deformation due to its own weight or external force within the span between each binding point.

[0081] It is particularly important to clarify that the connection and fixation between the main connecting member and the raft foundation reinforcement cage provides the main connecting member with dual vertical and horizontal constraints from the raft foundation reinforcement cage. This prevents horizontal displacement of the main connecting member due to operational forces during the installation and alignment of the wall reinforcement bars. It also prevents downward vertical deflection of the main connecting member due to the self-overlapping of the wall reinforcement bars. This ensures that the main connecting member maintains its centered position throughout the entire construction process, providing a stable and reliable overall reference for the temporary fixing and positional correction of the wall reinforcement bars. After completing the connection and fixation between the main connecting member and the raft foundation reinforcement cage, the horizontal position and straightness of the main connecting member should be checked. Only after confirming that the straightness deviation of the main connecting member along the length of the wall and its parallelism deviation with the direction of the reinforcement bar control points are within the allowable range can the subsequent wall reinforcement bar installation steps proceed. This is to avoid adverse effects on the positioning accuracy of the subsequent reinforcement bars due to the positional deviation of the main connecting member itself.

[0082] In one embodiment, after step S210, the method further includes: S230. Based on the construction disturbance conditions, divide the wall reinforcement area into a regular area and a key control area.

[0083] Specifically, after completing the central arrangement of the main connecting components and their connection and fixation with the raft foundation steel reinforcement skeleton, the entire wall reinforcement area needs to be divided into two categories: a regular area and a key control area, based on the differences in construction disturbances experienced at various locations within the wall reinforcement area. This will allow for targeted support measures to be taken for the disturbance risks in different areas.

[0084] When dividing the area, the assessment of construction disturbance conditions should comprehensively consider the following aspects: the insertion position of the vibrator and the radius of influence of vibration during concrete pouring and vibration operation, the distribution of lateral pressure of concrete during pouring, the vibration transmission path of construction machinery on the raft foundation surface during movement or operation, and the complex stress state of geometrically complex sections such as corners, junctions and openings in the wall reinforcement area.

[0085] It is important to clarify that the following areas should be designated as key control zones: areas within the effective vibration radius of the vibrator, sections where lateral pressure from concrete pouring is concentrated, main paths of vibration transmission from construction machinery, and geometrically abrupt changes such as wall corners, junctions, and opening edges. Other areas with relatively minor disturbance and simpler stress conditions should be designated as regular zones. The zoning results should be clearly marked in the construction record and reviewed and confirmed by the technical supervisor to serve as the basis for subsequent differentiated support point placement, ensuring the targeted and effective implementation of support measures.

[0086] S240. Support points are set at preset intervals in the conventional area; wherein the preset interval is A, 50cm≤A≤80cm.

[0087] Specifically, after dividing the regular area into the key control area, support points are evenly set along the length of the main connecting component in the regular area at a preset spacing A. The preset spacing A ranges from 50cm to 80cm.

[0088] When setting up support points in the conventional area, each support point should be arranged at equal intervals along the layout direction of the main connecting member. The main connecting member and the raft foundation reinforcement skeleton should be reinforced and fixed at the support point by means of wire binding or clip connection, so as to provide uniformly distributed vertical and lateral constraint support for the main connecting member in the conventional area.

[0089] It is important to clarify that the predetermined spacing A, ranging from 50cm to 80cm, is a reasonable range determined by comprehensively considering factors such as the cross-sectional stiffness of the main connecting member, the magnitude of construction disturbance loads in the conventional area, and the construction operation space. When the main connecting member is made of φ32mm steel pipe, given the relatively high bending stiffness of the steel pipe cross-section, the predetermined spacing A can be a larger value within the above range, preferably 70cm-80cm. When the main connecting member is made of C32mm steel reinforcement, considering the strong axial stiffness but relatively low bending stiffness of the reinforcement, the predetermined spacing A should preferably be a smaller value within the above range, preferably 50cm-60cm, to prevent the main connecting member between adjacent support points from undergoing bending deformation beyond the allowable range due to stress, thereby affecting the positioning constraint accuracy of the wall reinforcement.

[0090] In actual construction, the specific value of the preset spacing A should be coordinated with the spacing of the wall reinforcement bars. The support points should be set at the nodes corresponding to the control points of the wall reinforcement bars, so that the support points can play a role in vertical support of the main connecting components, and also directly form a strong constraint on the corresponding wall reinforcement bar fixing nodes.

[0091] S250. In the key control area, reduce the spacing between the support points of the main connecting member and add additional diagonal braces or horizontal tie points.

[0092] Specifically, for the designated key control areas, when arranging support points along the length of the main connecting components, the spacing between support points should be appropriately reduced based on the preset spacing A in the regular area, and additional diagonal braces or horizontal tie points should be added at or between support points to form a denser and more multi-directional constraint system in the key control areas than in the regular areas.

[0093] Regarding reducing the spacing between support points, the specific value of the support point spacing within the key control area should be determined based on the severity of the construction disturbance conditions experienced by that area. For key control areas located in the core section of the effective vibration radius of the vibrator or in the section where the lateral pressure of concrete pouring is concentrated at its peak, the support point spacing should be reduced to 50%–70% of the preset spacing A in the conventional area to significantly improve the deformation resistance of the main connecting components and the constraint stiffness of the wall reinforcement bars in this section. For key control areas located in sections with geometrical abrupt changes such as corners, intersections, or opening edges, the support point spacing should be reduced to 60%–80% of the preset spacing A in the conventional area, and combined with the setting of additional diagonal bracing or horizontal tie points, to jointly address the problem of uneven multi-directional stress caused by the complex geometric relationship in this section.

[0094] Regarding the addition of additional diagonal bracing or horizontal tie points, the additional diagonal bracing should be connected at an appropriate angle between the main connecting member and the raft foundation reinforcement cage. The direction of the diagonal bracing should correspond to the main direction of the lateral force of construction disturbance in the key control area, so that the diagonal bracing can effectively bear and transmit the lateral disturbance force and prevent the main connecting member from displacing in that direction. The horizontal tie points should be set on the side of the main connecting member to connect the main connecting member with the longitudinal or transverse reinforcement in the surrounding raft foundation reinforcement cage in a horizontal direction, so as to form multi-point constraints on the main connecting member in the horizontal plane and further restrict its degree of freedom of displacement in the horizontal direction.

[0095] It should be specifically and clearly stated that additional diagonal bracing and horizontal tie points can be set up separately or in combination according to the actual stress characteristics of the key control area. When the key control area is dominated by lateral disturbance loads, additional diagonal bracing should be set up first; when the key control area is dominated by multi-directional disturbances in the horizontal plane, horizontal tie points should be added first; when both types of disturbances coexist, it is advisable to set up additional diagonal bracing and horizontal tie points simultaneously to form all-round spatial constraints on the main connecting components.

[0096] In one embodiment, step S500 includes: S510. A steel pipe or C32mm steel bar is arranged on at least one side of the wall reinforcement area to form a diagonal bracing member. S520. The horizontal connecting member is provided in the upper middle part of the wall reinforcement bar so that any two adjacent wall reinforcement bars form an overall constraint and restrict the lateral displacement of the wall reinforcement bar. S530. Connect the diagonal bracing member with the corresponding horizontal connecting member to form a triangular stabilizing unit to limit the tilt of the wall reinforcement bars; S540. Connect and fix the lower end of the diagonal brace to the stable support part to complete the spatial constraint of the wall reinforcement.

[0097] In this embodiment, a spatial constraint system is constructed by laterally arranging diagonal bracing members in the wall reinforcement area, setting horizontal connecting members in the upper part of the wall reinforcement, connecting the two to form a triangular stable unit, and fixing the lower end of the diagonal bracing members to the stable support part. This system, with the geometric stability of the triangular structure as its core, integrates each wall reinforcement from an independent load-bearing component into a constraint unit with overall spatial stability. It can effectively limit the lateral displacement and tilting deformation of the wall reinforcement during the entire construction disturbance process, such as concrete pouring and vibration. This effectively solves the technical problem that the spatial position of the wall reinforcement of the nuclear island raft foundation is difficult to maintain under construction disturbance conditions, and ensures the accuracy and reliability of the geometric correspondence between the reinforcement and the upper wall structure.

[0098] In one embodiment, step S510 includes: S511. A diagonal bracing member is provided on at least one side of the wall reinforcement bar; S512. A horizontal connecting member is provided in the upper middle part of the wall reinforcement bar so that any two adjacent wall reinforcement bars form an integral connection. S513. The diagonal bracing member is connected and fixed to the horizontal connecting member and the stable support part respectively to form a triangular stable unit.

[0099] In this embodiment, by specifying that diagonal bracing members are provided on at least one side of the wall reinforcement bars, and horizontal connecting members are provided in the upper part of the wall reinforcement bars to form an integral connection between adjacent reinforcement bars, and by connecting and fixing the diagonal bracing members to the horizontal connecting members and the stable support parts respectively to form a triangular stable unit, each wall reinforcement bar is integrated from an independently stressed single member into a constrained unit with spatial overall stability. Thus, under various construction disturbance conditions, the lateral displacement and tilting deformation of the wall reinforcement bars can be effectively limited, ensuring that the positioning accuracy and construction quality of the wall reinforcement bars in the nuclear island raft foundation project meet the strict technical requirements of nuclear-grade engineering.

[0100] In one embodiment, step S400 includes: The position and verticality of the wall reinforcement bars are corrected, and the corrected wall reinforcement bars are tied and fixed to each intersection node of the bottom and top reinforcement bars of the raft foundation using iron wire with a diameter of not less than 2.8mm. Each intersection node is tied with no less than two ties.

[0101] In this embodiment, by clearly specifying that the diameter of the binding wire is not less than 2.8mm, the binding range covers all intersections with the bottom and top reinforcement of the raft foundation, and each intersection is bound with no less than two bindings, a multi-layered fixing guarantee system for the spatial position of the corrected wall reinforcement is constructed from three dimensions: the load-bearing capacity of the binding material, the spatial distribution density of the fixed constraint points, and the reliability of single-point connections. This effectively solves the problem of positional displacement of the wall reinforcement in the nuclear island raft foundation caused by insufficient binding during construction disturbances such as concrete pouring and vibration, providing a reliable technical guarantee for the final positioning accuracy and construction quality of the wall reinforcement in the nuclear island project.

[0102] In one embodiment, step S600 includes: S610. Determine the installation elevation of the steel bar positioning rod above the wall reinforcement bars; S620. The steel bar positioning rod is horizontally tied to the multiple wall reinforcement bars; S630. Based on the wall edge line or axis, the planar position and straightness of the rebar positioning rod are corrected by adjusting the top position of the wall insert, so as to complete the integrated positioning and reinforcement operation.

[0103] In this embodiment, the installation elevation of the rebar positioning rod is determined at the top of the wall rebar, the rebar positioning rod is horizontally tied to each wall rebar, and the planar position and straightness of the rebar positioning rod are corrected by adjusting the top position of the wall rebar according to the wall edge line or axis. This organically combines the positioning and correction of the rebar positioning rod with the precise adjustment of the top position of the wall rebar into a continuous construction process. Using the rebar positioning rod as a medium, the dispersed positioning requirements of each wall rebar's top are transformed into an overall correction operation for a continuous component. This improves the efficiency of the correction operation and achieves overall uniformity of the planar position of each wall rebar's top by controlling the straightness of the rebar positioning rod. This effectively solves the technical problem of difficulty in precisely controlling the planar position accuracy of the wall rebar's top in nuclear island raft foundation engineering, providing a reliable technical guarantee for the overall construction quality of the integrated positioning and reinforcement operation of the wall rebar and support in nuclear island engineering.

[0104] In one embodiment, after step S600, the method further includes: S610. Perform concrete pouring operation and check the offset data of the wall reinforcement bars and the steel bar positioning rod in real time during the pouring process; S620. When the offset data does not meet the preset conditions, pause the pouring and make corrections until the preset conditions are met and the concrete pouring operation is completed.

[0105] In this embodiment, real-time inspection and dynamic correction during the concrete pouring stage are incorporated into the overall construction process. By continuously monitoring the offset data of the wall reinforcement bars and rebar positioning rods during pouring, promptly suspending pouring when offsets exceed limits, and conducting retesting and confirmation after targeted correction, a dynamic closed-loop quality control system is established throughout the entire concrete pouring process. The impact of concrete pouring vibration disturbance on the spatial position of the wall reinforcement bars and rebar positioning rods is included in the dynamic management of the entire process. This effectively compensates for the limitations of relying solely on static positioning and reinforcement measures before pouring, which cannot address dynamic disturbances during pouring. Therefore, it effectively ensures that the final positioning accuracy of the nuclear island raft foundation wall reinforcement bars after concrete forming meets the stringent quality and technical requirements of nuclear-grade engineering.

[0106] The above are merely exemplary embodiments of the present invention and do not limit the scope of the patent of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A construction method for integrated positioning and reinforcement of reinforcing bars and supports in the raft foundation wall of a nuclear island, characterized in that, Includes the following steps: The location of the wall to be constructed is measured and marked on the surface of the raft foundation reinforcement to determine the wall reinforcement insertion area; wherein, the wall axis, edge line and multiple reinforcement control points are placed in the wall reinforcement insertion area; Main connecting components are arranged within the wall reinforcement area; wherein, the main connecting components are located on the same side of all the reinforcement control points, and the main connecting components are made of C32mm steel bars or φ32mm steel pipes; A wall insert is installed at each of the aforementioned insert control points, and all the wall inserts are temporarily fixed to the main connecting component; wherein, all the wall inserts are fixedly connected to the main connecting component. The position and verticality of the wall reinforcement bars are corrected, and the corrected wall reinforcement bars are tied and fixed to the main connecting component and the steel reinforcement skeleton of the raft foundation respectively; Diagonal bracing members and horizontal connecting members are provided in the area of ​​the wall reinforcement bars to form spatial constraints on the wall reinforcement bars; A steel bar positioning rod is tied to the reinforcing bar in the wall, and the position of the steel bar positioning rod is corrected to complete the integrated positioning and reinforcement operation.

2. The integrated positioning and reinforcement construction method for the nuclear island raft foundation wall reinforcement and support as described in claim 1, characterized in that, The step of measuring and setting out the location of the wall to be constructed on the raft foundation reinforcement surface to determine the area for wall reinforcement insertion includes: The structural axis of the wall is transferred to the surface of the raft foundation reinforcement; Mark out the two side lines of the raft foundation wall according to the wall design thickness; Using the wall axis or edge line as a reference, multiple control points for the reinforcing bars are marked. The axis lines, edge lines, and all the control points for the reinforcing bars after the layout are checked and confirmed to obtain the reinforcing bar area of ​​the wall.

3. The integrated positioning and reinforcement construction method for the nuclear island raft foundation wall reinforcement and support as described in claim 2, characterized in that, The step of marking multiple reinforcing bar control points based on the wall axis or edge line further includes: Additional verification control points were set up at corners, junctions, and the edges of openings.

4. The integrated positioning and reinforcement construction method for the nuclear island raft foundation wall reinforcement and support as described in claim 3, characterized in that, The step of arranging the main connecting components within the wall reinforcement area includes: Based on the wall length and the spacing of the reinforcing bars, the main connecting component is centered within the wall reinforcing bar area along the wall length direction; The main connecting component is connected and fixed to the raft foundation steel reinforcement skeleton.

5. The integrated positioning and reinforcement construction method for the reinforcing bars and supports of the nuclear island raft foundation wall as described in claim 4, characterized in that, After the step of centeredly arranging the main connecting member within the wall reinforcement area along the wall length direction according to the wall length and the reinforcement spacing, the method further includes: Based on the construction disturbance conditions, the area within which the wall reinforcement is inserted is divided into a regular area and a key control area; Support points are set at preset intervals in the regular area; wherein, the preset interval is A, 50cm≤A≤80cm; In the key control area, the spacing between the support points of the main connecting components is reduced and additional diagonal braces or horizontal tie points are added.

6. The integrated positioning and reinforcement construction method for the nuclear island raft foundation wall reinforcement and support as described in claim 5, characterized in that, The step of setting diagonal bracing members and horizontal connecting members in the reinforcement bar area to spatially constrain the wall reinforcement bars includes: A steel pipe or C32mm steel bar is arranged on at least one side of the wall reinforcement area to form a diagonal bracing member; The horizontal connecting member is provided in the upper middle part of the wall reinforcement bar so that any two adjacent wall reinforcement bars form an overall constraint and restrict the lateral displacement of the wall reinforcement bar. The diagonal bracing member is connected to the corresponding horizontal connecting member to form a triangular stabilizing unit to limit the tilting of the wall reinforcement bars; The lower end of the diagonal brace is connected and fixed to the stable support part to complete the spatial constraint of the wall reinforcement.

7. The integrated positioning and reinforcement construction method for the nuclear island raft foundation wall reinforcement and support as described in claim 6, characterized in that, The step of arranging steel pipes or C32mm steel bars to form diagonal bracing members on at least one side of the wall reinforcement area includes: A diagonal bracing member is provided on at least one side of the wall reinforcement bar; A horizontal connecting member is provided in the upper middle part of the wall reinforcement bars so that any two adjacent wall reinforcement bars form an integral connection; The diagonal bracing member is connected and fixed to the horizontal connecting member and the stable support part respectively to form a triangular stable unit.

8. The integrated positioning and reinforcement construction method for the nuclear island raft foundation wall reinforcement and support as described in claim 7, characterized in that, The steps of correcting the position and verticality of the wall reinforcement bars and binding and fixing the corrected wall reinforcement bars to the main connecting member and the steel reinforcement cage of the raft foundation respectively include: The position and verticality of the wall reinforcement bars are corrected, and the corrected wall reinforcement bars are tied and fixed to each intersection node of the bottom and top reinforcement bars of the raft foundation using iron wire with a diameter of not less than 2.8mm. Each intersection node is tied with no less than two ties.

9. The integrated positioning and reinforcement construction method for the nuclear island raft foundation wall reinforcement and support as described in claim 8, characterized in that, The steps of tying steel bar positioning rods to the reinforcing bars in the wall and correcting the position of the steel bar positioning rods to complete the integrated positioning and reinforcement operation include: The installation elevation of the rebar positioning rod is determined above the wall reinforcement bars; The steel bar positioning rod is horizontally tied to multiple wall reinforcing bars; Based on the wall edge line or axis, the planar position and straightness of the rebar positioning rod are corrected by adjusting the top position of the wall insert, so as to complete the integrated positioning and reinforcement operation.

10. The construction method for integrated positioning and reinforcement of nuclear island raft foundation wall reinforcement and support as described in any one of claims 1 to 9, characterized in that, After the steps of tying the rebar positioning rod to the wall reinforcement bars and correcting the position of the rebar positioning rod to complete the integrated positioning and reinforcement operation, the method further includes: Concrete pouring operations are carried out, and the offset data of the wall reinforcement bars and the steel bar positioning rods are checked in real time during the pouring process; If the offset data does not meet the preset conditions, the pouring is paused and correction is performed until the preset conditions are met and the concrete pouring operation is completed.

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