A method of building a container ship in steps and a step

Abstract

The present application relates to a kind of container ship ladder segment construction method and ladder segment, comprising: step 1, the ladder segment is divided into several deck pieces;Step 2, deck piece is carried out layer by layer, and the center edge of deck is the reference to draw the first reference line on the ground;With the bow-tail direction of the deck of deck piece as the reference to draw the second reference line;Theoretical difference distance between the center edge of deck is parallel to the first reference line to draw theoretical reference line;Support column is set along theoretical reference line;Deck piece is positioned according to theoretical reference line and the second reference line layer by layer;Step 3, after all the deck piece is positioned after closing, the precision of ladder segment is verified.The present application only measures the precision of deck piece after being made and after being closed by total station after the construction method of ladder segment, and the positioning process can be realized without the help of total station, and the positioning of deck piece can be realized more quickly by plumb bob, so that the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding, specifically to a method for constructing a container ship in stepped sections and the stepped sections themselves. Background Technology

[0002] In the construction of container ships, some sections are stepped. Existing technology, such as invention patent CN112027020A, discloses a construction method for three-step stepped sections. It mentions that in the bow area of ​​the container ship's cargo hold, due to the significant linear contraction of the outer plating, a stepped design is used to reduce the number of sections. Another existing technology, such as CN115610614A, discloses a method for controlling the construction precision of stepped sections of container ships, used for the construction of stepped sections of container ships.

[0003] During the construction of the stepped sections, poor positioning control of the upper and lower decks led to significant deviations in the end face degree, floor height, and alignment of the stepped sections. At the same time, the site was heavily reliant on total stations, and the waiting time for positioning measurement and analysis was long, which affected the efficiency of the section construction. Summary of the Invention

[0004] To improve the construction efficiency and accuracy of stepped sections, this invention provides a method for constructing stepped sections of container ships and a stepped section method, which reduces the use of total station and uses plumb bobs to quickly achieve construction accuracy control of sections, thereby improving construction efficiency.

[0005] The technical objective of this invention is achieved through the following technical solution:

[0006] A method for constructing a container ship using stepped sections, the method comprising the following steps:

[0007] Step 1: Divide the steps into several deck panels along the deck surface in the ship's height direction. The deck panels are then fabricated on a jig.

[0008] Step 2: Based on the uppermost deck segment of the stepped sections, the deck segments are assembled layer by layer, including:

[0009] Step 2.1: Using the center edge of the uppermost deck section as a reference, draw the projection of the center edge of the uppermost deck section on the ground as the first reference line; using the bow and stern sides of the uppermost deck section with no margin as a reference, draw the projection of the second reference line on the ground. The first reference line and the second reference line are perpendicular to each other.

[0010] Step 2.2: Draw the theoretical baseline of the center edge of the deck piece above, parallel to the first baseline, according to the theoretical discontinuity distance between the center edges of the deck pieces;

[0011] Step 2.3: Install support columns along the theoretical baseline to support the cantilevered positions of the upper deck panels;

[0012] Step 2.4: Assemble the deck panels layer by layer onto the top deck panel, and position the deck panels layer by layer according to the theoretical baseline and the second baseline;

[0013] Step 3: After all the deck panels are assembled and positioned, use a total station to collect three-dimensional data of the stepped sections. Use three-dimensional data analysis software to analyze whether the accuracy of the stepped sections meets the accuracy requirements, and correct any positions that exceed the accuracy requirements.

[0014] Furthermore, in step 1, when fabricating the deck panels, the deck surface is used as the base surface for panel assembly. After the panels are assembled, longitudinal and transverse structural components are installed on the deck surface.

[0015] Furthermore, installation lines for the longitudinal and transverse structural components are drawn on the deck surface along the bow-stern direction and the half-breadth direction of the hull, using the marginless edge as a reference. A 150M.K reference line is drawn on the deck surface towards the interior of the deck surface, using the marginless edge as a reference. Corresponding to the 150M.K reference line, a 150M.K reference line is drawn on the longitudinal and transverse structural components. The longitudinal and transverse structural components are assembled on the deck surface according to the installation lines, and the discontinuity between the longitudinal and transverse structural components and the deck surface is controlled by aligning the 150M.K reference line on the longitudinal and transverse structural components with the 150M.K reference line on the deck surface.

[0016] Furthermore, after the deck panels are manufactured, three-dimensional data of each deck panel is collected using a total station. The three-dimensional data of the deck panels is then compared with the theoretical three-dimensional data to verify whether the manufacturing accuracy of the deck panels meets the requirements.

[0017] Further, in step 2, a plumb bob is used to project the center edge of the deck sheet onto the ground to form several projection points, and the projection points are connected to form a first reference line; a plumb bob is used to project the bow and stern sides of the uppermost deck sheet without margin onto the ground to form several projection points, and the projection points are connected to draw a second reference line.

[0018] Furthermore, when positioning the deck panels according to the second baseline, the second baseline is extended to ensure that it intersects with all theoretical baselines.

[0019] Furthermore, the height of the support column is based on the deck surface of the uppermost deck piece, and the theoretical elevation between the deck surface of the uppermost deck piece and the deck surface of the uppermost deck piece is used as the design height of the support column.

[0020] Furthermore, during the assembly and positioning of the deck panels, plumb bobs are suspended at the center edge of the deck panel and the edge with no margin in the bow and stern directions, respectively, and the position of the deck panel is adjusted so that the plumb bobs are positioned at the second reference line and the corresponding theoretical reference line.

[0021] The present invention also provides a container stepped section, which includes at least two deck panels, and the deck panels are assembled and constructed according to the method described above.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. The stepped segment construction method of the present invention only requires precision measurement with a total station after the deck panels are made and after the deck panels are assembled. The assembly and positioning process can be achieved without the use of a total station. The assembly and positioning of the deck panels can be achieved relatively quickly with a plumb bob, which improves the construction efficiency.

[0024] 2. The present invention uses support columns to support the deck panels. The design elevation of the support columns controls the elevation of the deck panels in the closing height direction and the levelness of the deck panels. In addition, it also increases the stability of the deck panels. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the angular scale control of the deck surface opening area in this invention.

[0026] Figure 2 This is a schematic diagram of the 150M.K baseline marking on the deck surface of the present invention.

[0027] Figure 3 This is a schematic diagram of the drawing of the first and second baselines in this invention.

[0028] Figure 4 This is a schematic diagram of the support column arrangement in this invention.

[0029] In the diagram, 1. Installation lines for longitudinal and transverse structural components; 2. 150M.K baseline; 3. A-piece; 4. B-piece; 5. Center edge of deck; 6. First baseline; 7. Second baseline; 8. Theoretical baseline; 9. Horizontal jig; 10. Support column. Detailed Implementation

[0030] The technical solution of the present invention will be further described below with reference to specific embodiments:

[0031] A method for constructing a container ship using stepped sections, the method comprising the following steps:

[0032] Step 1: Divide the steps into several deck panels along the deck surface in the ship's height direction. The deck panels are then fabricated on a jig.

[0033] During the fabrication of the deck panels, the panels are assembled on the horizontal jig 9 using the deck surface as the base. After the panels are assembled, the longitudinal and transverse structural components are installed on the deck surface. The dimensional and horizontal accuracy of the horizontal jig is controlled within ±2mm.

[0034] The first step is to assemble the deck panels, strictly controlling the main dimensions, reference edge end face dimensions, and opening area angular dimensions of the deck panel assembly. The main dimensions are length, width, and thickness, and the reference edge is the edge with no allowance.

[0035] When controlling the angular scale of the opening area, such as Figure 1 As shown, the lengths of a, b, and c are measured. The Pythagorean theorem is used to calculate whether a and b are perpendicular. If a and b are perpendicular, the angular dimensions of the opening area meet the requirements. The angular dimension accuracy of the deck opening area is controlled within ±3mm.

[0036] On the deck surface, using the marginless edge as a reference, draw the longitudinal and transverse structural member installation lines 1 along the bow-stern direction and the half-breadth direction of the hull; and on the deck surface, using the marginless edge as a reference, draw a 150M.K reference line 2 towards the inside of the deck surface, as follows. Figure 2 As shown, a 150M.K reference line is marked on the longitudinal and transverse structural members corresponding to the 150M.K reference line. The 150M.K reference line is a reference line 150mm away from the reference edge. The longitudinal and transverse structural members are assembled onto the deck surface according to the installation lines. The gap between the longitudinal and transverse structural members and the deck surface is controlled by aligning the 150M.K reference line on the longitudinal and transverse structural members with the 150M.K reference line on the deck surface. The gap between the longitudinal and transverse structural members and the deck surface is controlled within ±2mm. The longitudinal and transverse structural members include longitudinal components and transverse components, which can be plates, reinforcing profiles, etc. The longitudinal and transverse structural members are welded and installed on the deck surface to form the deck sheet.

[0037] After the deck panels are fabricated, three-dimensional data of each panel is acquired using a total station. The three-dimensional data of the deck panels is compared with the theoretical three-dimensional data to verify whether the fabrication accuracy of the deck panels meets the requirements. Once the fabrication accuracy of the deck panels meets the requirements, the next step of assembling the deck panels is carried out. The requirements for the verticality of the deck panels is controlled within ±5mm, the concentricity accuracy within ±3mm, the horizontal accuracy of the deck panels is controlled within ±5mm, and the main dimension accuracy of the deck panels is controlled within ±5mm.

[0038] Step 2: Taking a stepped segment consisting of two deck panels as an example, the stepped segment adopts a reverse closing method during the closing process. Therefore, the uppermost deck panel of the stepped segment is located at the bottom during the closing process. Define the uppermost deck panel of the stepped segment as panel A and the lowermost deck panel of the stepped segment as panel B. In the actual closing process, panel B closes onto panel A from above.

[0039] Specifically, it includes:

[0040] Step 2.1: Place the A-piece body in reverse on the horizontal jig 9. Using the center edge 5 of the deck of the A-piece body 3 as a reference, draw the projection of the center edge 5 of the deck of the A-piece body 3 on the ground as the first reference line 6. The center edge of the deck is the side closest to the centerline of the hull. Using the bow and stern sides of the deck of the A-piece body 3 with no margin as a reference, draw the second reference line 7 on the ground. The first reference line 6 and the second reference line 7 are perpendicular to each other. Figure 3 As shown.

[0041] Specifically, a plumb bob is used to project the center edge 5 of the deck of A-piece 3 onto the ground to form several projection points, and the projection points are connected to form a first baseline; a plumb bob is used to project the bow and stern sides of the deck of A-piece 3 without margin onto the ground to form several projection points, and the projection points are connected to draw a second baseline 7.

[0042] Step 2.2: Draw the theoretical baseline 8 of the deck center edge of B piece 4 along the first baseline 6, according to the theoretical discontinuity distance between the deck center edge 5 of B piece 4 and the deck center edge 5 of A piece 3.

[0043] Step 2.3: Set up support columns 10 along the theoretical baseline 8 of piece B 4 to support the cantilever position of piece B 4 relative to piece A 3, such as... Figure 4 As shown.

[0044] The height of the support column 10 is based on the deck surface of section A 3, and the theoretical elevation between the deck surface of section B 4 and the deck surface of section A 3 is used as the design height of the support column 10. By supporting section B 4 with the support column 10, both the elevation and levelness of section B can be controlled. The support column 10 can be made of materials such as round steel or channel steel.

[0045] Step 2.4: Assemble piece B 4 onto piece A 3, and position piece B 4 layer by layer according to the theoretical baseline 8 and the second baseline 7. Specifically, suspend plumb bobs at the center edge of piece B's deck and the edge with no margin in the bow and stern directions, and adjust the position of piece B so that the plumb bobs are positioned at the second baseline 7 and the corresponding theoretical baseline 8.

[0046] Since the B-piece 4 extends beyond the A-piece 3 by a certain distance, the second baseline 7 needs to be extended to ensure that it intersects with the theoretical baseline 8 of the B-piece 4 in order to facilitate the positioning of the B-piece 4.

[0047] Step 3: After B-piece 4 is assembled and positioned, use a total station to collect three-dimensional data of the stepped segments. Use three-dimensional data analysis software to analyze whether the accuracy of the stepped segments meets the accuracy requirements and correct any positions that exceed the accuracy requirements.

[0048] In one embodiment, the stepped segment includes two or more deck panels, such as panel A, panel B, and panel C. Panel A, panel B, and panel C are arranged from top to bottom in the stepped segment. Panel A is the uppermost deck panel in the stepped segment, and panel C is the lowermost deck panel in the stepped segment. After panels A, B, and C are constructed, panel B is assembled onto panel A, and then panel C is assembled onto panel B.

[0049] The theoretical baseline of sheet B is consistent with that in the above embodiment. The theoretical baseline of sheet C is drawn parallel to the first baseline, based on the theoretical discontinuity distance between the center edge of sheet C's deck and the center edge of sheet A's deck. To facilitate the closure of sheet C, the second baseline is extended to intersect with the theoretical baseline of sheet C.

[0050] This embodiment is merely a further explanation of the present invention and is not intended to limit the present invention. Those skilled in the art can make non-inventive modifications to this embodiment as needed after reading this specification, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A method for constructing a container ship in stepped sections, characterized in that, The method includes the following steps: Step 1: Divide the steps into several deck panels along the deck surface in the ship's height direction. The deck panels are then fabricated on a jig. Step 2: Based on the uppermost deck segment of the stepped sections, the deck segments are assembled layer by layer, including: Step 2.1: Using the center edge of the uppermost deck section as a reference, draw the projection of the center edge of the uppermost deck section on the ground as the first reference line; using the bow and stern sides of the uppermost deck section with no margin as a reference, draw the projection of the second reference line on the ground. The first reference line and the second reference line are perpendicular to each other. Step 2.2: Draw the theoretical baseline of the center edge of the deck piece above, parallel to the first baseline, according to the theoretical discontinuity distance between the center edges of the deck pieces; Step 2.3: Install support columns along the theoretical baseline to support the cantilevered positions of the upper deck panels; Step 2.4: Assemble the deck panels layer by layer onto the top deck panel, and position the deck panels layer by layer according to the theoretical baseline and the second baseline; Step 3: After all the deck panels are assembled and positioned, use a total station to collect three-dimensional data of the stepped sections. Use three-dimensional data analysis software to analyze whether the accuracy of the stepped sections meets the accuracy requirements, and correct any positions that exceed the accuracy requirements.

2. The method for constructing a container ship in stepped sections according to claim 1, characterized in that, In step 1, when fabricating the deck panels, the deck surface is used as the base surface for panel assembly. After the panels are assembled, longitudinal and transverse structural components are installed on the deck surface.

3. The method for constructing a container ship in stepped sections according to claim 2, characterized in that, On the deck surface, using the marginless edge as a reference, draw the installation lines for the longitudinal and transverse structural members along the bow-stern direction and the half-breadth direction of the hull; and draw a 150M.K reference line on the deck surface with the marginless edge as a reference towards the inside of the deck surface. On the longitudinal and transverse structural members, draw a 150M.K reference line corresponding to the 150M.K reference line; assemble the longitudinal and transverse structural members on the deck surface according to the installation lines, and control the discontinuity between the longitudinal and transverse structural members and the deck surface end face by aligning the 150M.K reference line on the longitudinal and transverse structural members with the 150M.K reference line on the deck surface.

4. The method for constructing a container ship in stepped sections according to claim 1, characterized in that, After the deck panels are manufactured, three-dimensional data of each deck panel is collected using a total station. The three-dimensional data of the deck panels is then compared with the theoretical three-dimensional data to verify whether the manufacturing accuracy of the deck panels meets the requirements.

5. The method for constructing a container ship in stepped sections according to claim 1, characterized in that, In step 2, a plumb bob is used to project the center edge of the deck sheet onto the ground to form several projection points, and the projection points are connected to form a first reference line; a plumb bob is used to project the bow and stern sides of the uppermost deck sheet without margin onto the ground to form several projection points, and the projection points are connected to draw a second reference line.

6. The method for constructing a container ship in stepped sections according to claim 5, characterized in that, When positioning the deck panels according to the second baseline, extend the second baseline to ensure that it intersects with all theoretical baselines.

7. The method for constructing a container ship in stepped sections according to claim 1, characterized in that, The height of the support column is based on the deck surface of the uppermost deck piece, and the theoretical elevation between the deck surface of the uppermost deck piece and the deck surface of the uppermost deck piece is used as the design height of the support column.

8. The method for constructing a container ship in stepped sections according to claim 1, characterized in that, When assembling and positioning the deck panels, plumb bobs are suspended at the center edge of the deck panel and the edge with no margin in the bow and stern directions, respectively. The position of the deck panel is adjusted so that the plumb bobs are positioned at the second reference line and the corresponding theoretical reference line.

9. A container stepped segmentation, characterized in that, It includes at least two deck panels, which are assembled and constructed according to the method described in any one of claims 1-8.

Images