Method for reinforcing hull accuracy
By classifying and reinforcing the hull structure and selectively dismantling parts, the structural strength and precision of the hull sections were enhanced, the problem of deformation of the sub-sections was solved, and construction efficiency and precision were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-07-21
AI Technical Summary
During the division of the hull into sections, the design guided by the integrity of outfitting resulted in insufficient connection strength of the section structure, which easily led to deformation problems, affecting the accuracy of the hull structure and the difficulty of subsequent construction.
The hull structure is classified, and reinforcement structures are added according to the characteristics of different sections. The reinforcement structures are removed in a targeted manner at different stages. These include bulkheads, three-dimensional sections, thin plate sections, large openings and large holes in the main sections, curved sections and columns, etc. Steel sections and diagonal bracing are used for support and connection.
This improved the structural strength and precision of the segments during docking and assembly, reduced the risk of deformation, increased construction efficiency and precision, and lowered rework rate and cost.
Smart Images
Figure CN120793080B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of shipbuilding technology, and more specifically, to a method for enhancing ship hull precision. Background Technology
[0002] With the continuous advancement of shipbuilding technology, modern shipbuilding models increasingly emphasize the efficient strategy of simultaneously advancing the construction of hull sections and outfitting. During the hull section division phase, to improve construction efficiency, priority is usually given to the complete installation of outfitting sections during the design phase, thereby reducing subsequent construction difficulties and improving overall construction quality.
[0003] In practice, while this segmented approach, prioritizing outfitting integrity, improves outfitting efficiency, the need to consider outfitting space and installation conditions in the segmented structural design can lead to insufficient structural connection strength between segments, resulting in varying degrees of structural weakening. This structural weakening can easily cause deformation problems during subsequent hoisting, transportation, or welding, making it difficult to control the precision of the hull structure.
[0004] Structural deformation not only increases the workload of subsequent corrections, such as restoring the structural shape through surgical adjustments, but also adversely affects the installation of outfitting components. Because the installation reference points of deformed areas change, the originally designed installation positions of outfitting components may not match accurately, leading to increased installation difficulty and even requiring the removal of installed components for readjustment. This increases the removal and rework rates of subsequent outfitting components. These issues have become significant factors affecting construction schedules and cost control during actual construction.
[0005] Therefore, there is an urgent need to provide a method for enhancing the precision of ship hulls, in order to compensate for the shortcomings of existing technologies to a certain extent. Summary of the Invention
[0006] The purpose of this application is to provide a method for enhancing the precision of ship hulls, which to a certain extent solves the problem that the structure of the ship hull is prone to deformation during the processing and manufacturing process, resulting in a decrease in precision or inability to dock, thus affecting the manufacturing precision of the ship hull.
[0007] To achieve the above objectives, the present invention provides a method for strengthening the precision of a ship's hull, comprising the following steps: Step 1, classifying the hull structure and designing strengthening structures according to the classification; Step 2, installing the designed strengthening structures at corresponding positions; Step 3, designing the removal sequence for different strengthening structures according to the hull structure.
[0008] In step one, separating the hull structure includes dividing the hull structure into components, three-dimensional segments, typical thin plate segments, large opening and large hole segments, curved segments, columns, and typical thin plate segments.
[0009] Specifically, the components include enclosure walls and corrugated plates; the enclosure walls include thin-plate segmented enclosure walls. For thin-plate segmented enclosure walls with a length of 5m or more, after the initial assembly and back-firing, a reinforcing structure is installed at the lower edge of the non-component surface, 250mm to 300mm from the edge of the plate. In step three, when the thin-plate segmented enclosure wall is at the lower edge of the main section, the reinforcing structure is removed in the dock; when the thin-plate segmented enclosure wall is at the lower edge of a non-main section, the reinforcing structure is removed in the final assembly. The welding process of the enclosure walls uses diagonal bracing reinforcing structures, and these diagonal bracing reinforcing structures are removed after the initial assembly and welding. For corrugated plates with a thickness of 5mm or less and a processed length of 3m or more, a reinforcing structure is installed at the lower edge, 250mm to 300mm from the edge of the plate. In step three, when the corrugated plate is at the lower edge of the main section, the reinforcing structure is removed in the dock; when the corrugated plate is at the lower edge of a non-main section, the reinforcing structure is removed in the final assembly.
[0010] Specifically, the three-dimensional segmentation includes a double-layer three-dimensional segmentation and segmented vertical components; for the double-layer three-dimensional segmentation with a reinforcement structure more than 2m from the edge of the plate, a further reinforcement structure should be installed at the opening, and in step three, the reinforcement structure of the double-layer three-dimensional segmentation is removed after the overall assembly; for the segmented vertical components with a height of more than 3m, a further diagonal bracing reinforcement structure is installed, and in step three, after the overall assembly of two adjacent segmented vertical components is completed, the diagonal bracing reinforcement structure is removed.
[0011] Specifically, for the typical thin plate segment, when the transverse T-beam is more than 2m from the edge of the plate, after the segment is backfired, a reinforcing structure is installed on the non-component surface 250mm to 300mm from the edge of the plate. In step three, the reinforcing structure is removed after the two adjacent thin plate segments are assembled. When the transverse T-beam is more than 2m from the edge of the plate, a precision reinforcing structure is added 300mm from half the edge.
[0012] Furthermore, typical thin plate segments also include thin plate segments with enclosures and curved thin plate segments; for the thin plate segments with enclosures, reinforcing structures are provided at the intersection of T-beams, T-beams in the stairwell area, or at locations of easily deformable T-beams, and in step three, after the assembly of two adjacent thin plate segments with enclosures is completed, the reinforcing structures are removed; for curved thin plate segments, precision reinforcing structures are added to the welds inside the curved outer plate assembly, between assemblies, and between segments.
[0013] The large-opening, large-aperture segment includes a mid-span segment with large openings at both ends, a thin-plate segment with internal openings, a main plate segment with an opening of more than 1.5m, and an opening area greater than 5m². 2The multi-deck ramp; for the mid-span section with large openings at the ends, a reinforcing structure is installed at the large opening, and in step three, after the assembly of two adjacent mid-span sections is completed, the reinforcing structure is removed; for the thin plate section with internal openings, a precision reinforcing structure is installed in the opening area of the thin plate section with a side length of more than 2m, and in step three, after the assembly of two adjacent thin plate sections is completed, the precision reinforcing structure is removed; for the main plate section with an opening of more than 1.5m, a precision reinforcing structure is installed on the non-structural surface 250mm to 300mm from the plate edge, and in step three, after the assembly of two adjacent main plate sections is completed, the precision reinforcing structure is removed; for the opening area greater than 5m² 2 The multi-deck ramp has a reinforced structure on the non-structural surface of the deck, and in step three, the reinforced structure is removed after the dry dock is sealed and welded.
[0014] Specifically, the curved segment includes an L-shaped curved segment and a single-shell outer plate; for the L-shaped curved segment, a reinforcing structure is installed for the deck exceeding 3.5m, and in step three, after the assembly of two adjacent L-shaped curved segments is completed, the reinforcing structure is removed; for the single-shell outer plate, in the absence of a strong frame, a diagonal bracing reinforcing structure is installed for the single-shell outer plate exceeding 3m in height, and in step three, after the segmentation of the single-shell outer plate is completed, the diagonal bracing reinforcing structure is removed.
[0015] Furthermore, for the column, at least two sides are reinforced with diagonal braces during installation, and in step three, the diagonal braces are removed after the column is installed.
[0016] Furthermore, a typical thin plate section includes multi-layer thin plate sections. At the highest point of the hull's central camber, the multi-layer thin plate sections have reinforcing structures at the assembly joint and mounting joint. In step three, the internal reinforcing structures of the multi-layer thin plate sections are removed before the dock is opened, and the reinforcing structure between the two columns at the mounting joint is removed in the dock. During the dock stage, the distance between the upper and lower decks is greater than 3.5m, and reinforcing structures are installed, extending vertically. In step three, after the upper section is mounted, welded, and leveled, the reinforcing structures are removed.
[0017] Compared with existing technologies, the hull precision enhancement method provided by this invention has the following advantages: The hull precision reinforcement method provided by this invention includes the following steps: Step 1, classifying the hull structure and designing reinforcement structures according to the classification; Step 2, installing the designed reinforcement structures at corresponding positions; Step 3, designing the removal sequence for different reinforcement structures according to the hull structure.
[0018] This analysis shows that by classifying the hull structure, reinforcement structures can be added according to the characteristics of different sections. This ensures the structural strength and stability of different sections during the assembly process, from initial grouping to mid-grouping, large grouping, and final assembly. It also allows for smoother and more precise docking or assembly of sections with other sections, improving operational efficiency. Since the processes that significantly impact sections during manufacturing are welding, straightening, transportation, and storage, targeted removal of reinforcement structures at different stages of the hull structure can prevent deformation caused by welding and straightening, thus ensuring the structural strength and precision of different sections to a certain extent. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 A schematic flowchart illustrating the hull precision enhancement method provided in this application embodiment; Figure 2 A schematic diagram showing the location of the reinforcing structure of the thin-plate segmented bulkhead in the hull precision reinforcement method provided in this application embodiment; Figure 3 A schematic diagram showing the position of the diagonal bracing reinforcement structure of the thin-plate segmented bulkhead during the welding process in the hull precision reinforcement method provided in this application embodiment; Figure 4 A schematic diagram showing the location of the reinforcing structure of the corrugated plate in the hull precision enhancement method provided in this application embodiment; Figure 5 This is a schematic diagram showing the location of the double-layer three-dimensional segmented reinforcement structure in the hull precision reinforcement method provided in the embodiments of this application; Figure 6 A schematic diagram showing the location of the segmented vertical member reinforcement structure in the hull precision enhancement method provided in this application embodiment; Figure 7 This is a schematic diagram showing the location of the thin plate segmented reinforcement structure in the hull precision reinforcement method provided in the embodiments of this application; Figure 8 A schematic diagram showing the location of the precision reinforcement structure for thin plate segments in the hull precision reinforcement method provided in this application embodiment; Figure 9 for Figure 8 A magnified view of a section at point A in the middle; Figure 10A schematic diagram showing the location of the reinforcing structure with thin-plate sections of the bulkhead in the hull precision reinforcement method provided in this application embodiment; Figure 11 A schematic diagram showing the location of the reinforcing structure with thin-plate sections of the bulkhead in the hull precision reinforcement method provided in this application embodiment; Figure 12 A schematic diagram showing the location of the diagonal bracing reinforcement structure during the welding process of the thin plate with bulkhead in the hull precision reinforcement method provided in this application embodiment; Figure 13 A schematic diagram showing the location of the reinforcing structure for the curved thin plate segment in the hull precision reinforcement method provided in this application embodiment; Figure 14 A schematic diagram showing the location of the reinforcing structure in the large opening area of the mid-span section in the hull precision reinforcement method provided in this application embodiment; Figure 15 A schematic diagram showing the location of the reinforcing structure in the large opening area of the mid-span section in the hull precision reinforcement method provided in this application embodiment; Figure 16 A schematic diagram showing the location of the reinforcing structure in the large opening area of the mid-span section in the hull precision reinforcement method provided in this application embodiment; Figure 17 A schematic diagram showing the location of the reinforcing structure in the internal opening area of a thin plate segment in the hull precision reinforcement method provided in this application embodiment; Figure 18 A schematic diagram showing the location of the reinforcing structure in the internal opening area of a thin plate segment in the hull precision reinforcement method provided in this application embodiment; Figure 19 A schematic diagram showing the location of the reinforcing structure for the segmented mainboard opening in the hull precision enhancement method provided in this application embodiment; Figure 20 A schematic diagram showing the location of the reinforcing structure in the deck ramp opening area of the hull precision reinforcement method provided in this application embodiment; Figure 21 A schematic diagram showing the location of the reinforcing structure of the L-shaped deodorizing section in the hull precision enhancement method provided in this application embodiment; Figure 22 A schematic diagram showing the location of the diagonal bracing reinforcement structure on the single-hull outer plate in the hull precision enhancement method provided in this application embodiment; Figure 23 A schematic diagram showing the location of the reinforcing structure of the column in the hull precision reinforcement method provided in this application embodiment; Figure 24 A front view of the position of the precision reinforcement structure of the multi-layer thin plate section in the hull precision reinforcement method provided in the embodiments of this application; Figure 25 A top view showing the location of the precision reinforcement structure of the multi-layer thin plate section in the hull precision reinforcement method provided in this application embodiment; Figure 26 This is a schematic diagram showing the location of the vertically reinforced structure with a large spacing between the upper and lower decks in the hull precision enhancement method provided in this application embodiment.
[0021] Icons: 1-Reinforced structure; 2-Diagonal bracing reinforced structure; 3-Precision reinforced structure. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0025] like Figure 1 As shown, the hull precision strengthening method provided in this application includes the following steps: Step 1: Classify the hull structure and design a strengthening structure 1 according to the classification; Step 2: Install the designed strengthening structure 1 at the corresponding position; Step 3: Design the removal sequence for different strengthening structures 1 according to the hull structure.
[0026] Compared with existing technologies, the hull precision enhancement method provided by this invention has the following advantages: The hull precision strengthening method provided by this invention classifies the hull structure and allows for the addition of reinforcing structures 1 according to the characteristics of different hull sections. This ensures the structural strength and stability of different sections during the assembly process, from initial grouping to mid-grouping, large grouping, and final assembly. It also enables smoother and more precise docking or assembly of sections with other sections, improving operational efficiency. Since the processes that significantly impact sections during manufacturing are welding, straightening, transportation, and storage, targeted removal of reinforcing structures 1 at different stages of the hull structure's development can prevent deformation caused by welding and straightening, thus ensuring the structural strength and precision of different sections to a certain extent.
[0027] like Figures 2-26 As shown, in step one, separating the hull structure includes dividing the hull structure into components, three-dimensional segments, typical thin plate segments, large opening and large hole segments, curved segments, columns, and typical thin plate segments.
[0028] Specifically, such as Figures 2-4 As shown, the components in this application include enclosure walls and corrugated plates; the enclosure walls include thin plate segmented enclosure walls. For thin plate segmented enclosure walls with a length of 5m or more, after the group is assembled and backfired, a reinforcing structure 1 is installed at the lower edge of the non-component surface, 250mm to 300mm from the edge of the plate. In step three, when the thin plate segmented enclosure wall is at the lower edge of the main section, the reinforcing structure 1 is removed in the dock; when the thin plate segmented enclosure wall is at the lower edge of a non-main section, the reinforcing structure 1 is removed in the main assembly. The welding process of the enclosure walls uses a diagonal bracing reinforcing structure 2, and the diagonal bracing reinforcing structure 2 is removed after the group is assembled and welded. For corrugated plates with a thickness of less than 5mm and a processed length of more than 3m, a reinforcing structure 1 is installed at the lower edge of the plate, 250mm to 300mm from the edge of the plate. In step three, when the corrugated plate is at the lower edge of the main section, the reinforcing structure 1 is removed in the dock; when the corrugated plate is at the lower edge of a non-main section, the reinforcing structure 1 is removed in the main assembly.
[0029] The reinforcing structure 1 installed on the aforementioned thin plate segmented enclosure can be made of structural steel, which is connected to the thin plate segmented enclosure by welding. After the thin plate segmented enclosure is assembled, the structural steel is removed. The aforementioned structural steel can also be reinforced in weak areas using other reinforcing fixtures, such as support rods, to prevent the thin plate from deforming.
[0030] Of course, when performing group vertical welding on the thin plate segmented enclosure, the diagonal bracing reinforcement structure 2 can support the angle between the two thin plate structures, thereby ensuring welding accuracy. The diagonal bracing reinforcement structure 2 can also be made of structural steel or the aforementioned reinforcement tooling.
[0031] For corrugated plates, the connection between the reinforcing structure 1 and the corrugated plate is also achieved by welding, and the reinforcing structure 1 on the corrugated plate can also be made of structural steel.
[0032] Specifically, such as Figure 5 Combination Figure 6 As shown, the three-dimensional segmentation in this application includes a double-layer three-dimensional segmentation and segmented vertical components; for double-layer three-dimensional segments with a reinforcement structure 1 more than 2m from the edge of the plate, a further reinforcement structure 1 should be installed at the opening, and in step three, the reinforcement structure 1 of the double-layer three-dimensional segmentation is removed from the overall assembly; for segmented vertical components with a height of more than 3m, a diagonal bracing reinforcement structure 2 is further installed, and in step three, after the overall assembly of two adjacent segmented vertical components is completed, the diagonal bracing reinforcement structure 2 is removed.
[0033] The reinforcing structure 1 used in both the double-layer three-dimensional segmented and segmented vertical components can be made of structural steel, and installation is achieved through welding, such as... Figure 5 As shown, the reinforcing structure 1 is supported vertically between the two layers to ensure the accuracy of the layer spacing.
[0034] As for the installation of vertical components, by adding diagonal bracing to strengthen the structure 2, the verticality of the vertical components can be guaranteed, and the safety of the operation can also be guaranteed, avoiding the problem of the vertical components tilting or even falling over.
[0035] Specifically, such as Figures 7-9 As shown, for typical thin plate segments, when the transverse T-beam is more than 2m from the edge of the plate, after the segment is backfired, a reinforcing structure 1 is installed on the non-component surface 250mm to 300mm from the edge of the plate. In step three, after the two adjacent thin plate segments are assembled, the reinforcing structure 1 is removed. When the transverse T-beam is more than 2m from the edge of the plate, a precision reinforcing structure 3 is added 300mm from half the edge.
[0036] The reinforcing structure 1 in this application is usually a single integral reinforcing rib structure, while the aforementioned precision reinforcing structure 3 consists of multiple short-sized reinforcing structures 1.
[0037] like Figure 7 As shown, when the transverse T-beam is more than 2m away from the edge of the plate, the reinforcing structure 1 uses steel profiles, and the entire steel profile is welded to the edge of the plate to avoid deformation of the plate edge.
[0038] And such Figure 8 Combination Figure 9 As shown, since multiple parallel reinforcing ribs are formed on the plate, in order to ensure the structural and support strength between the multiple reinforcing ribs, this application adds a precision reinforcing structure 3 between adjacent reinforcing ribs, thereby ensuring the support strength between the reinforcing ribs.
[0039] Furthermore, such as Figures 10-13As shown, typical thin plate segments also include thin plate segments with enclosures and curved thin plate segments; for thin plate segments with enclosures, a reinforcing structure 1 is set at the intersection of T-beams, the T-beams in the stairwell area, or at the location of easily deformable T-beams, and in step three, after the assembly of two adjacent thin plate segments with enclosures is completed, the reinforcing structure 1 is removed; for curved thin plate segments, a precision reinforcing structure 3 is added to the welds inside the curved outer plate assembly, between assemblies, and between segments.
[0040] In this section, the aforementioned reinforcing structure 1 all adopts steel reinforcing structure 1, and as... Figure 12 As shown, similar to the above situation, when the enclosure is assembled, since the enclosure is set in a vertical direction, the verticality of the enclosure and the accuracy of the welding process can be ensured by adding a diagonal bracing reinforcement structure 2 between the base plate and the enclosure, thus avoiding the problem of deformation caused by thermal stress. The diagonal bracing reinforcement structure 2 is also made of structural steel.
[0041] For segmented curved thin plates, such as Figure 13 As shown, since the edges of the curved segment are provided with reinforcing structures 1, the curvature accuracy of the curved segment can be guaranteed. Furthermore, multiple parallel reinforcing ribs are formed on the curved segment. Therefore, by further adding precision reinforcing structures 3 between the reinforcing ribs, the strength between the reinforcing ribs can be guaranteed, thereby further ensuring the structural strength of the overall curved segment.
[0042] Among them, such as Figures 14-20 As shown, the large-aperture, large-hole segment includes a mid-span segment with large openings at both ends, a thin-plate segment with internal openings, a main board segment with an opening of more than 1.5m, and an opening area greater than 5m². 2 Multi-deck ramps; for mid-span sections with large openings at the bow and stern, a reinforcing structure 1 is installed at the large opening, and in step three, after the assembly of two adjacent mid-span sections is completed, the reinforcing structure 1 is removed; for thin plate sections with internal openings, a precision reinforcing structure 3 is installed in the opening area of the thin plate section with a side length of more than 2m, and in step three, after the assembly of two adjacent thin plate sections is completed, the precision reinforcing structure 3 is removed; for main plates with openings of more than 1.5m, a precision reinforcing structure 3 is installed on the non-structural surface 250mm to 300mm from the plate edge, and in step three, after the assembly of two adjacent main plates is completed, the precision reinforcing structure 3 is removed; for opening areas with an area greater than 5m²... 2 The multi-deck ramp has a reinforcing structure 1 installed on the non-structural surface of the deck, and in step three, the reinforcing structure 1 is removed after the dry dock is sealed and welded.
[0043] exist Figures 14-16In the process, all three structures have large opening areas. By setting up a reinforcing structure 1 in the large opening areas, and the reinforcing structure 1 is made of steel, the opening areas can be supported, thereby ensuring the structural strength of the opening areas, preventing deformation of the opening areas, and ensuring the structural strength and assembly accuracy of the overall segments.
[0044] Of course, for the segmentation of internal openings, support can be achieved by designing a reinforcing structure 1 in the opening area. However, when the opening size is large, such as... Figure 17 As shown, the reinforcing structure 1 is supported in a grid pattern within the opening, thus ensuring the dimensional accuracy of the opening. When the opening size is relatively small, one or more reinforcing structures 1 can be designed to support the opening, such as... Figure 18 As shown.
[0045] like Figure 19 As shown, a reinforcing structure 1 is installed at the opening of the segmented motherboard, which can also support the structures at both ends of the opening of the segmented motherboard and prevent the opening from collapsing and deforming due to impact. This reinforcing structure 1 also adopts a steel structure.
[0046] like Figure 20 As shown, during the assembly stage, for multi-deck ramp opening areas with an area greater than 5㎡, a reinforcement structure of no less than 350H steel or the same strength is installed on the non-structural surface of the deck.
[0047] Specifically, such as Figure 21 Combination Figure 22 As shown, the curved segment includes an L-shaped curved segment and a single-shell outer plate. For the L-shaped curved segment, a reinforcing structure 1 is installed above 3.5m of the deck. In step three, after the assembly of two adjacent L-shaped curved segments is completed, the reinforcing structure 1 is removed. For the single-shell outer plate, in the absence of a strong frame, a diagonal bracing reinforcing structure 2 is installed above 3m of the single-shell outer plate. In step three, after the segment of the single-shell outer plate is completed, the diagonal bracing reinforcing structure 2 is removed.
[0048] like Figure 21 As shown, since the corner of the L-shaped curved segment is hollow, this application provides a reinforcing structure 1 at this location, which is a steel section, to support the L-shaped corner, prevent changes in verticality, and thus ensure the structural strength of the overall segment.
[0049] like Figure 22 As shown, for a single-shell outer panel, since there are vertical segments, a diagonal bracing reinforcement structure 2 is set up, and the diagonal bracing reinforcement structure 2 is made of steel, so as to support the vertical part, ensure the stability of the connection and the verticality during operation.
[0050] like Figure 23As shown, for the column, at least two sides are provided with diagonal bracing reinforcement 2 during column installation, and in step three, the diagonal bracing reinforcement 2 is removed after the column installation is completed.
[0051] like Figures 24-26 As shown, a typical thin plate section includes multiple thin plate sections. At the highest point of the hull's central camber, a reinforcing structure 1 is installed at the assembly joint and the mounting joint of the multiple thin plate sections. In step three, the reinforcing structure 1 inside the multiple thin plate sections is removed before the dock is opened, and the reinforcing structure 1 between the two columns of the mounting joint is removed in the dock. In the dock stage, the distance between the upper and lower decks is greater than 3.5m, and the reinforcing structure 1 is installed, extending vertically. In step three, after the upper section is mounted, welded, and leveled, the reinforcing structure 1 is removed.
[0052] The aforementioned reinforcing structure 1 also uses structural steel. By supporting the reinforcing structure 1 vertically between multiple thin plates, the overall structural strength of the section can be achieved, avoiding deformation problems during docking and transportation.
[0053] When the distance between the upper and lower decks is too large, such as greater than 3.5m, multiple reinforcing structures 1 are added vertically to support the multiple decks.
[0054] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.
[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A method for enhancing the precision of a ship's hull, characterized in that, Includes the following steps: Step 1: Classify the hull structure and design reinforcement structures according to the classification; Step 2: Install the reinforced structure at the corresponding locations according to the design; Step 3: Design the removal sequence of different reinforcement structures according to the hull structure; In step one, separating the hull structure includes dividing the hull structure into components, three-dimensional sections, typical thin plate sections, large opening and large perforation sections, curved sections, columns, and typical thin plate sections. The components include a wall and a corrugated plate. The wall includes a thin-plate segmented wall. In step three, when the thin-plate segmented wall is at the lower opening of the main section, the reinforcing structure is removed in the dock. When the thin-plate segmented wall is at the lower opening of a non-main section, the reinforcing structure is removed in the main assembly. The three-dimensional segment includes a double-layer three-dimensional segment and segmented vertical members. In step three, the reinforcing structure of the double-layer three-dimensional segment is removed in the main assembly. For the segmented vertical members with a height of 3m or more, a diagonal bracing reinforcement structure is further installed, and in step three, after the assembly of two adjacent segmented vertical members is completed, the diagonal bracing reinforcement structure is removed; The welding process of the enclosure uses a diagonal bracing reinforcement structure, which is removed after the group is assembled and welded. For the typical thin plate segment, in step three, the reinforcement structure is removed after the two adjacent thin plate segments are assembled. When the edge of the transverse T-beam exceeds 2m, a precision reinforcement structure is added 300mm away from half the edge.
2. The method for enhancing hull precision according to claim 1, characterized in that, For the thin plate segmented enclosure with a length of 5m or more, after the group is erected and fired, a reinforcing structure is installed at a distance of 250mm to 300mm from the edge of the plate at the bottom of the non-component surface. For corrugated plates with a thickness of less than 5mm and a length of more than 3m after processing, a reinforcing structure is installed at the bottom edge 250mm to 300mm from the edge of the plate. In step three, if the corrugated plate is at the bottom edge of the main section, the reinforcing structure is removed in the dock; if the corrugated plate is at the bottom edge of a non-main section, the reinforcing structure is removed in the main assembly.
3. The method for enhancing hull precision according to claim 1, characterized in that, For the double-layer three-dimensional segmented structure that is more than 2m away from the edge of the plate, a further reinforcing structure should be installed at the opening.
4. The method for enhancing hull precision according to claim 1, characterized in that, When the transverse T-beam is more than 2m away from the edge of the plate, after the section back-burning, a reinforcing structure is installed on the non-component surface 250mm to 300mm away from the edge of the plate.
5. The method for enhancing hull precision according to claim 4, characterized in that, Typical thin plate segments also include thin plate segments with walls and curved thin plate segments; For the thin plate segment with enclosure, a reinforcing structure is provided at the intersection of T-beams, the T-beams in the stairwell area, or at the location of the easily deformable T-beams. In step three, after the assembly of two adjacent thin plate segments with enclosure is completed, the reinforcing structure is removed. For curved thin plate segments, precision reinforcement structures are added to the welds inside the curved outer plate assembly, between assemblies, and between segments.
6. The method for enhancing hull precision according to claim 1, characterized in that, The large-opening, large-aperture section includes a mid-span section with large openings at both ends, a thin-plate section with internal openings, a main board section with an opening of more than 1.5m, and an opening area greater than 5m². 2 Multi-deck ramp; For the mid-span segment with large openings at the beginning and end, a reinforcing structure is provided at the large opening, and in step three, after the two adjacent mid-span segments are assembled, the reinforcing structure is removed. For the thin plate segments with internal openings, a precision reinforcement structure with a side length of more than 2m is set in the opening area inside the thin plate segment. In step three, after the assembly of two adjacent thin plate segments is completed, the precision reinforcement structure is removed. For segmented motherboards with openings of 1.5m or more, a precision reinforcement structure is set at a distance of 250mm to 300mm from the edge of the board on the non-structural surface. In step three, after the two adjacent segmented motherboard assemblies are assembled, the precision reinforcement structure is removed. For opening areas greater than 5m 2 The multi-deck ramp has a reinforced structure on the non-structural surface of the deck, and in step three, the reinforced structure is removed after the dry dock is sealed and welded.
7. The method for enhancing hull precision according to claim 1, characterized in that, The curved segmentation includes an L-shaped curved segmentation and a single-shell outer plate; For L-shaped curved sections, a reinforcing structure is installed where the deck exceeds 3.5m. In step three, after the assembly of two adjacent L-shaped curved sections is completed, the reinforcing structure is removed. For single-shell outer panels, in the absence of a strong frame, diagonal bracing reinforcement structures are installed for single-shell outer panels with a height of 3m or more. In step three, after the single-shell outer panel is completed in sections, the diagonal bracing reinforcements are removed.
8. The method for enhancing hull precision according to claim 1, characterized in that, For the column, at least two sides are reinforced with diagonal bracing during installation, and in step three, the diagonal bracing is removed after the column is installed.
9. The method for enhancing hull precision according to claim 1, characterized in that, A typical thin plate section includes multi-layer thin plate sections. At the highest point of the camber at the center of the hull, the multi-layer thin plate section has a reinforcing structure at the assembly joint and the mounting joint. In step three, the reinforcing structure inside the multi-layer thin plate section is removed before the dock, and the reinforcing structure between the two columns of the mounting joint is removed in the dock. During the dock stage, the distance between the upper and lower decks is greater than 3.5m. A reinforcing structure is installed, and the reinforcing structure extends vertically. In step three, after the upper section is installed, welded, and leveled, the reinforcing structure is removed.