A scaffold-free construction method for the top side compartments of a ship with transverse bulkheads.

Abstract

This invention provides a scaffold-free construction process for the top side compartment of a ship with transverse bulkheads, comprising the following steps: dividing the overall structure of the top side compartment into modules; fabricating the corresponding parts for each module; welding and assembling the parts of each module; welding and fixing the inclined longitudinal bulkhead components, rib components, and top side compartment sealing plates to the inclined plate components using the inclined plate as the base surface to form an inclined plate assembly; welding and fixing the inclined plate assembly and bulkhead components to the deck using the deck as the base surface to form a deck assembly; welding and fixing the deck assembly to the outer plate using the outer plate as the base surface; welding the transverse bulkhead to the outer plate using the bulkhead components as positioning mechanisms; welding strong rib components in parallel on both sides of the transverse bulkhead to form the final top side compartment section; and performing sand flushing operations on the top side compartment section. Using this construction process, scaffolding is not required, reducing the welding difficulty of the main structure and improving construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, specifically to a scaffold-free construction process for the top side compartments of a ship with transverse bulkheads. Background Technology

[0002] When constructing the top side bulkhead section of a ship with transverse bulkheads, the section components include inclined longitudinal bulkhead components composed of inclined longitudinal bulkheads and inclined longitudinal bulkhead stiffeners, rib plate components composed of rib plates and rib plate stiffeners, inclined plate components composed of inclined plates and inclined plate longitudinal ribs, deck components composed of deck ribs and deck longitudinal ribs, pier components composed of pier parts, strong rib plate components composed of strong rib plate panels and strong rib plate webs, outer plate components composed of outer plate ribs and outer plate longitudinal ribs, top side bulkhead sealing plates, and transverse bulkheads. These components are often supported by fixed jigs, and each component is welded sequentially from high to low using the outer plate of the outer plate component as the base surface. The working surfaces of the inclined plate components, inclined longitudinal bulkhead components, and rib plate components are all inclined, requiring inclined welding, which increases the welding difficulty. At the same time, the working position at the top of the deck components is relatively high, requiring the erection of scaffolding during construction, which increases the construction risk factor and raises the construction difficulty. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a scaffold-free construction process for the top side compartments of ships with transverse bulkheads. The main structure of each section is constructed using flat-angle welding, and no scaffolding is required during construction, thus reducing the working height and improving the safety factor.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] Step 1: Based on the detailed design drawings of the top side compartment, divide the overall structure of the top side compartment into modules. The inclined longitudinal wall and the inclined longitudinal wall stiffener form the inclined longitudinal wall component, the rib plate and the rib plate stiffener form the rib plate component, the inclined plate and the inclined plate longitudinal rib form the inclined plate component, the deck and the deck longitudinal rib form the deck component, the pier parts form the pier component, the strong rib plate panel and the strong rib plate web form the strong rib component, the outer plate and the outer plate longitudinal rib form the outer plate component, and the top side compartment sealing plate and the transverse bulkhead are divided into separate modules.

[0006] Step 2: Using CNC cutting technology, the corresponding parts of the inclined longitudinal wall components, rib plate components, inclined plate components, deck components, wall block components, strong rib components, outer plate components, top side compartment sealing plate and transverse bulkhead are manufactured, and the parts are sorted according to modules.

[0007] Step 3: Place each module part on the assembly platform, weld the inclined longitudinal wall to the inclined longitudinal wall stiffener to form the inclined longitudinal wall component, weld the rib plate to the rib plate stiffener to form the rib plate component, weld the inclined plate to the inclined plate longitudinal bone to form the inclined plate component, weld the deck to the deck longitudinal bone to form the deck component, weld the wall pier parts to form the wall pier component, weld the strong rib plate panel to the strong rib web plate to form the strong rib component, and weld the outer plate to the outer plate longitudinal bone to form the outer plate component.

[0008] Step 4: Using the inclined plate of the inclined plate component as the base surface, place the inclined plate component with the inclined plate longitudinal rib welded on the jig with the side facing up. Draw the first reference line for installing the inclined longitudinal wall component on the inclined plate. Flip and lift the inclined longitudinal wall component so that the welded side of the inclined longitudinal wall component to the inclined plate faces down and aligns the welded side of the inclined longitudinal wall component to the inclined plate with the first reference line. Then, use a flat angle welding method to weld and fix the inclined longitudinal wall component to the inclined plate.

[0009] Step 5: Draw the second baseline for installing the rib plate component on the inclined plate. Flip and hoist the rib plate component so that the welding side of the rib plate component to the inclined plate is facing down and the welding side of the rib plate component to the inclined plate is aligned with the second baseline. One side of the rib plate component is in contact with the inclined longitudinal wall of the inclined longitudinal wall component. The rib plate component is welded and fixed to the inclined plate by using a flat angle welding method.

[0010] Step 6: Weld and fix the inclined longitudinal wall and the rib plate component at the contact point;

[0011] Step 7: Draw the third baseline on the inclined plate for installing the top side compartment sealing plate. Hoist the top side compartment sealing plate so that the welding side of the top side compartment sealing plate to the inclined plate faces down and the welding side of the top side compartment sealing plate to the inclined plate is aligned with the third baseline. Use flat angle welding to weld and fix the top side compartment sealing plate to the inclined plate to form a complete inclined plate assembly.

[0012] Step 8: Using the deck of the deck component as the base surface, place the deck component with the side welded with the deck longitudinal ribs facing up on the jig, and draw the fourth reference line for installing the ramp assembly on the deck. Hoist and flip the ramp assembly so that the welded side of the ramp assembly facing the deck is facing down, and align the welded side of the ramp assembly with the fourth reference line. Weld the ramp assembly to the deck and fix it so that the ramp assembly and the deck component together form a triangular compartment with an opening at one end.

[0013] Step 9: Weld the pier components onto the deck where the ramp assembly was welded in Step 8, thus forming a complete deck assembly;

[0014] Step 10: Using the outer plate of the outer plate component as the base surface, place the outer plate component with the side welded with the outer plate longitudinal rib facing up on the jig, and draw the fifth reference line for installing the deck assembly on the outer plate. Flip and hoist the deck assembly so that the welded side of the deck assembly to the outer plate faces down and align the deck assembly with the fifth reference line. Weld and fix the deck assembly to the outer plate.

[0015] Step 11: Based on the welding position of the wall pier component in Step 9, locate the installation position of the transverse bulkhead, weld and fix the transverse bulkhead to the outer plate, and arrange the strong rib components in parallel on both sides of the transverse bulkhead to finally form a complete top side compartment segment.

[0016] Step 12: Transport the top side compartment sections to the sand flushing room and perform sand flushing operations on the inside and outside of the top side compartment sections.

[0017] Preferably, in step 3, the manufacturing steps of the wall pier component are as follows:

[0018] Step 301: Cut out the wall pier parts according to the detailed design drawings. The wall pier parts include wall pier inclined plate, partition plate and side plate. The wall pier inclined plate includes a first inclined side, a first vertical side, a second vertical side, a top side and a first bottom side. The top side and the first bottom side are arranged in parallel.

[0019] Step 302: Weld the partition plate between the two inclined wall piers. The partition plate is set parallel to the top edge and the first bottom edge. The first vertical edges of the two inclined wall piers are fixed together by welding the side plates.

[0020] Preferably, in step 9, the welding steps for the wall pier components are as follows:

[0021] Step 901: Determine the installation positions of the bulkhead components on the inclined plate, deck, and top side compartment sealing plate, and draw the sixth, seventh, and eighth reference lines.

[0022] Step 902: Align the first bottom edge of the pier ramp plate in the pier component with the eighth reference line on the top side compartment sealing plate and weld it in place; align the second vertical edge of the pier ramp plate in the pier component with the seventh reference line on the deck and weld it in place using a flat angle welding method; align the first inclined edge of the pier ramp plate in the pier component with the sixth reference line on the ramp plate and weld it in place.

[0023] Preferably, in step 11, the welding steps for the transverse bulkhead are as follows:

[0024] Step 1101: Vertically hoist the transverse bulkhead onto the outer plate. A short vertical edge that mates with the side plate is provided on the upper part of one side of the transverse bulkhead. A second inclined edge that mates with the inclined plate is provided below the short vertical edge. A second bottom edge that mates with the outer plate is provided at the bottom of the transverse bulkhead. Using the side plate of the bulkhead component as the positioning reference, weld and fix the short vertical edge of the transverse bulkhead to the side plate. Step 1102: Weld and fix the second bottom edge of the transverse bulkhead to the outer plate.

[0025] Step 1103: Weld and fix the second inclined side of the transverse bulkhead to the inclined plate.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. Existing technologies require non-flat-corner welding methods when welding the top side compartment sections due to the structural limitations of these sections. This results in high welding difficulty, inconsistent weld quality, frequent rework, and low welding efficiency. Using this construction process, all welding of the main structure of the entire top side compartment section employs flat-corner welding. Flat-corner welding is simple, ensures weld quality, and improves welding efficiency.

[0028] 2. Existing technology requires scaffolding to be erected inside and outside the top side compartment when welding the top side compartment sections. This involves working at a high position, posing safety hazards to workers. Using this construction process, scaffolding is unnecessary; construction can be completed using only a formwork, reducing the construction height and significantly minimizing the risks.

[0029] 3. Using the wall pier components as a positioning mechanism makes the installation and positioning of transverse bulkheads simpler and more precise, improving construction efficiency and quality. Attached Figure Description

[0030] Figure 1 This is a structural schematic diagram of the inclined plate assembly;

[0031] Figure 2 This is a structural schematic diagram of the deck components;

[0032] Figure 3 This is a schematic diagram of the welded structure of the inclined plate assembly and the deck components;

[0033] Figure 4 This is a structural schematic diagram of the wall pier component;

[0034] Figure 5 This is a structural schematic diagram of the inclined plate of the wall pier;

[0035] Figure 6 This is a schematic diagram of the welding of the wall pier components in step 9;

[0036] Figure 7 This is a structural schematic diagram of the top side compartment section;

[0037] Among them, 101-sloping longitudinal wall, 102-sloping longitudinal wall stiffener, 201-rib plate, 202-rib plate reinforcing rib, 301-sloping plate, 302-sloping plate longitudinal rib, 401-deck, 402-deck longitudinal rib, 501-baffle pier sloping plate, 5011-first sloping edge, 5012-first vertical edge, 5013-second vertical edge, 5014-top edge, 5015-first bottom edge, 502-bullet, 503-side plate, 601-strong rib plate panel, 701-outer plate, 702-outer plate longitudinal rib, 8-top edge compartment sealing plate, 9-transverse bulkhead. Detailed Implementation

[0038] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0039] In this invention, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are merely used to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.

[0040] like Figures 1 to 7 As shown, a scaffold-free construction process for the top side compartment of a ship with transverse bulkheads includes the following steps:

[0041] Step 1: Based on the detailed drawings of the top side compartment, the overall structure of the top side compartment is divided into modules. The inclined longitudinal wall 101 and the inclined longitudinal wall stiffener 102 form the inclined longitudinal wall component; the rib plate 201 and the rib plate stiffener 202 form the rib plate component; the inclined plate 301 and the inclined plate longitudinal rib 302 form the inclined plate component; the deck 401 and the deck longitudinal rib 402 form the deck component; the pier parts form the pier component; the strong rib panel 601 and the strong rib web plate form the strong rib component; the outer plate 701 and the outer plate longitudinal rib 702 form the outer plate component; the top side compartment sealing plate 8 and the transverse bulkhead 9 are divided into separate modules. Step 2: Using CNC cutting technology, the corresponding parts of the inclined longitudinal wall component, rib plate component, inclined plate component, deck component, pier component, strong rib component, outer plate component, top side compartment sealing plate and transverse bulkhead are manufactured respectively, and the parts are sorted according to modules.

[0042] When manufacturing the parts corresponding to each module, a reasonable production plan should be formulated. Based on the construction speed of the top side tank section, the cutting production line and the stacking space of the yard should be fully utilized. The parts of each module should be processed in sequence according to the welding sequence of the top side tank section to avoid the parts being produced too quickly and occupying the yard space.

[0043] Step 3: Place each module part on the assembly platform, weld the inclined longitudinal wall to the inclined longitudinal wall stiffener to form the inclined longitudinal wall component, weld the rib plate to the rib plate stiffener to form the rib plate component, weld the inclined plate to the inclined plate longitudinal bone to form the inclined plate component, weld the deck to the deck longitudinal bone to form the deck component, weld the wall pier parts to form the wall pier component, weld the strong rib plate panel to the strong rib web plate to form the strong rib component, and weld the outer plate to the outer plate longitudinal bone to form the outer plate component.

[0044] The manufacturing steps for the wall pier components are as follows:

[0045] Step 301: Cut out the wall pier parts according to the detailed design drawings. The wall pier parts include a wall pier inclined plate 501, a partition plate 502 and a side plate 503. The wall pier inclined plate includes a first inclined side 5011, a first vertical side 5012, a second vertical side 5013, a top side 5014 and a first bottom side 5015. The top side and the first bottom side are arranged in parallel.

[0046] Step 302: Weld the partition plate between the two wall pier inclined plates. The partition plate 502 is set parallel to the top edge 5014 and the first bottom edge 5015. The first vertical edges of the two wall pier inclined plates 501 are fixed by welding the side plate 503.

[0047] Step 4: Using the inclined plate of the inclined plate component as the base surface, place the inclined plate component with the inclined plate longitudinal rib welded on the jig with the side facing up. Draw the first reference line for installing the inclined longitudinal wall component on the inclined plate. Flip and lift the inclined longitudinal wall component so that the welded side of the inclined longitudinal wall component to the inclined plate faces down and aligns the welded side of the inclined longitudinal wall component to the inclined plate with the first reference line. Then, use a flat angle welding method to weld and fix the inclined longitudinal wall component to the inclined plate.

[0048] Step 5: Draw the second baseline for installing the rib plate component on the inclined plate. Flip and hoist the rib plate component so that the welding side of the rib plate component to the inclined plate is facing down and the welding side of the rib plate component to the inclined plate is aligned with the second baseline. One side of the rib plate component is in contact with the inclined longitudinal wall of the inclined longitudinal wall component. The rib plate component is welded and fixed to the inclined plate by using a flat angle welding method.

[0049] Step 6: Weld and fix the inclined longitudinal wall and the rib plate component at the contact point;

[0050] Step 7: Draw the third baseline on the inclined plate for installing the top side compartment sealing plate. Hoist the top side compartment sealing plate so that the welding side of the top side compartment sealing plate to the inclined plate faces down and the welding side of the top side compartment sealing plate to the inclined plate is aligned with the third baseline. Use flat angle welding to weld and fix the top side compartment sealing plate to the inclined plate to form a complete inclined plate assembly.

[0051] Step 8: Using the deck of the deck component as the base surface, place the deck component with the side welded with the deck longitudinal ribs facing up on the jig, and draw the fourth reference line for installing the ramp assembly on the deck. Hoist and flip the ramp assembly so that the welded side of the ramp assembly facing the deck is facing down, and align the welded side of the ramp assembly with the fourth reference line. Weld the ramp assembly to the deck and fix it so that the ramp assembly and the deck component together form a triangular compartment with an opening at one end.

[0052] Step 9: Weld the pier components onto the deck where the ramp assembly was welded in Step 8, thus forming a complete deck assembly;

[0053] The welding steps for the wall pier components are as follows:

[0054] Step 901: Determine the installation positions of the bulkhead components on the inclined plate, deck, and top side compartment sealing plate, and draw the sixth, seventh, and eighth reference lines.

[0055] Step 902: Align the first bottom edge of the pier ramp plate in the pier component with the eighth reference line on the top side compartment sealing plate and weld it in place; align the second vertical edge of the pier ramp plate in the pier component with the seventh reference line on the deck and weld it in place using a flat angle welding method; align the first inclined edge of the pier ramp plate in the pier component with the sixth reference line on the ramp plate and weld it in place.

[0056] Step 10: Using the outer plate of the outer plate component as the base surface, place the outer plate component with the side welded with the outer plate longitudinal rib facing up on the jig, and draw the fifth reference line for installing the deck assembly on the outer plate. Flip and hoist the deck assembly so that the welded side of the deck assembly to the outer plate faces down and align the deck assembly with the fifth reference line. Weld and fix the deck assembly to the outer plate.

[0057] Step 11: Based on the welding position of the wall pier component in Step 9, locate the installation position of the transverse bulkhead, weld and fix the transverse bulkhead to the outer plate, and arrange the strong rib components in parallel on both sides of the transverse bulkhead to finally form a complete top side compartment segment.

[0058] The welding steps for the transverse bulkheads are as follows:

[0059] Step 1101: Vertically hoist the transverse bulkhead onto the outer plate. A short vertical edge that mates with the side plate is provided on the upper part of one side of the transverse bulkhead. A second inclined edge that mates with the inclined plate is provided below the short vertical edge. A second bottom edge that mates with the outer plate is provided at the bottom of the transverse bulkhead. Using the side plate of the bulkhead component as the positioning reference, weld and fix the short vertical edge of the transverse bulkhead to the side plate. Step 1102: Weld and fix the second bottom edge of the transverse bulkhead to the outer plate.

[0060] Step 1103: Weld and fix the second inclined side of the transverse bulkhead to the inclined plate;

[0061] Step 12: The top side compartment is transported to the sand flushing room for sand flushing inside and outside the compartment. This construction process eliminates the need for scaffolding. Furthermore, the welding of the main structure utilizes angled welding, reducing welding difficulty and improving welding quality. The use of wall piers for positioning the welding of the transverse bulkheads ensures accurate welding positions, avoids rework, and prevents delays in the construction period.

[0062] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A process for the construction of a topside tank section of a transverse bulkhead ship without the use of scaffolding, characterised in that, The method comprises the following steps: Step 1, according to the detailed drawing of the top side cabin, the overall structure of the top side cabin is divided into modules, the diagonal longitudinal wall and the diagonal longitudinal wall reinforcing material form a diagonal longitudinal wall component, the rib plate and the rib plate reinforcing rib form a rib plate component, the inclined plate and the inclined plate longitudinal bone form an inclined plate component, the deck and the deck longitudinal bone form a deck component, the wall pier parts form a wall pier component, the strong rib plate and the strong rib plate web form a strong rib component, the outer plate and the outer plate longitudinal bone form an outer plate component, the top side cabin cover plate and the transverse bulkhead are divided into separate modules; Step 2, using numerical control cutting technology, the corresponding parts of the diagonal longitudinal wall component, the rib plate component, the inclined plate component, the deck component, the wall pier component, the strong rib component, the outer plate component, the top side cabin cover plate and the transverse bulkhead are respectively completed, and the parts are sorted according to the modules; Step 3, place the module parts on the assembly platform, weld the diagonal longitudinal wall and the diagonal longitudinal wall reinforcing material to form the diagonal longitudinal wall component, weld the rib plate and the rib plate reinforcing rib to form the rib plate component, weld the inclined plate and the inclined plate longitudinal bone to form the inclined plate component, weld the deck and the deck longitudinal bone to form the deck component, weld the wall pier parts to form the wall pier component, and weld the strong rib plate and the strong rib plate web to form the strong rib component, and weld the outer plate and the outer plate longitudinal bone to form the outer plate component; Step 4, taking the inclined plate of the inclined plate component as the base surface, the side of the inclined plate component with the inclined plate longitudinal bone is placed on the jig with the upward side, a first reference line for installing the diagonal longitudinal wall component is drawn on the inclined plate, the diagonal longitudinal wall component is hoisted and turned over, the welding side of the diagonal longitudinal wall component to the inclined plate is downward, and the welding side of the diagonal longitudinal wall component to the inclined plate is aligned with the first reference line, then the diagonal longitudinal wall component and the inclined plate are welded and fixed by using flat angle welding; Step 5, a second reference line for installing the rib plate component is drawn on the inclined plate, the rib plate component is hoisted and turned over, the welding side of the rib plate component to the inclined plate is downward, and the welding side of the rib plate component to the inclined plate is aligned with the second reference line, one side of the rib plate component is in contact with the diagonal longitudinal wall of the diagonal longitudinal wall component, and the rib plate component and the inclined plate are welded and fixed by using flat angle welding; Step 6, the contact part between the diagonal longitudinal wall and the rib plate component is welded and fixed; Step 7, a third reference line for installing the top side cabin cover plate is drawn on the inclined plate, the top side cabin cover plate is hoisted, the welding side of the top side cabin cover plate to the inclined plate is downward, and the welding side of the top side cabin cover plate to the inclined plate is aligned with the third reference line, then the top side cabin cover plate and the inclined plate are welded and fixed by using flat angle welding, and finally a complete inclined plate assembly is formed; Step 8, taking the deck of the deck component as the base surface, the side of the deck component with the deck longitudinal bone is placed on the jig with the upward side, a fourth reference line for installing the inclined plate assembly is drawn on the deck, the inclined plate assembly is hoisted and turned over, the welding side of the inclined plate assembly to the deck is downward, and the welding side of the inclined plate assembly is aligned with the fourth reference line, then the inclined plate assembly and the deck are welded and fixed, so that the inclined plate assembly and the deck component together form a triangular cabin with an opening at one end; Step 9, the wall pier component is welded on the deck of the inclined plate assembly welded in step 8, and finally a complete deck assembly is formed; Step 10, with the outer plate of the outer plate component as the base surface, the outer plate component with the outer plate longitudinal rib is placed flat on the jig with the side of the outer plate component welded upward, and the fifth reference line for installing the deck assembly is drawn on the outer plate, the deck assembly is hoisted and turned over, the welded side of the deck assembly is downward, and the deck assembly is aligned with the fifth reference line, and the deck assembly is welded and fixed on the outer plate; Step 11, according to the welding position of the wall pier component in step 9, the installation position of the transverse bulkhead is positioned, the transverse bulkhead is welded and fixed on the outer plate, and the strong rib components are arranged in parallel on both sides of the transverse bulkhead, and finally the complete top edge cabin section is formed; Step 12, the top edge cabin section is transported to the sand washing room, and the sand washing operation is carried out on the inside and outside of the top edge cabin section.

2. A process for constructing a topside tank section of a cross bulkhead ship without falsework according to claim 1, characterized in that, In step 3, the manufacturing steps of the wall pier component are as follows: Step 301, cutting the wall pier parts according to the detailed drawing, the wall pier parts including the wall pier inclined plate, the partition plate and the side plate, the wall pier inclined plate including the first inclined edge, the first vertical edge, the second vertical edge, the top edge and the first bottom edge, the top edge and the first bottom edge being arranged in parallel; Step 302, the partition plate is welded between the two wall pier inclined plates, the partition plate is arranged in parallel with the top edge and the first bottom edge, and the first vertical edge of the two wall pier inclined plates is welded and fixed through the side plate.

3. A process for constructing a topside tank section of a cross bulkhead ship without cradles according to claim 2, characterized in that, In step 9, the welding steps of the wall pier component are as follows: Step 901, respectively determining the installation position of the wall pier component on the inclined plate, the deck and the top edge cabin sealing plate, and drawing the sixth reference line, the seventh reference line and the eighth reference line; Step 902, aligning the first bottom edge of the wall pier inclined plate in the wall pier component with the eighth reference line on the top edge cabin sealing plate, and welding and fixing, aligning the second vertical edge of the wall pier inclined plate in the wall pier component with the seventh reference line on the deck, and welding and fixing by using flat angle welding, and aligning the first inclined edge of the wall pier inclined plate in the wall pier component with the sixth reference line on the inclined plate, and welding and fixing.

4. A process for constructing a topside tank section of a cross bulkhead ship without falsework according to claim 3, characterized in that, In step 11, the welding steps of the transverse bulkhead are as follows: Step 1101, vertically hoisting and placing the transverse bulkhead on the outer plate, the transverse bulkhead is provided with a short vertical edge matched with the side plate on one side, a second inclined edge matched with the inclined plate below the short vertical edge, and a second bottom edge matched with the outer plate at the bottom of the transverse bulkhead, taking the side plate of the wall pier component as the positioning reference, welding and fixing the short vertical edge of the transverse bulkhead with the side plate; Step 1102, welding and fixing the second bottom edge of the transverse bulkhead with the outer plate; Step 1103, welding and fixing the second inclined edge of the transverse bulkhead with the inclined plate. ​

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