NL2028642B1 - A construction method for a stern section of a cargo transfer vessel - Google Patents

A construction method for a stern section of a cargo transfer vessel Download PDF

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Publication number
NL2028642B1
NL2028642B1 NL2028642A NL2028642A NL2028642B1 NL 2028642 B1 NL2028642 B1 NL 2028642B1 NL 2028642 A NL2028642 A NL 2028642A NL 2028642 A NL2028642 A NL 2028642A NL 2028642 B1 NL2028642 B1 NL 2028642B1
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Netherlands
Prior art keywords
deck
weld
stern
watertight
assembly
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NL2028642A
Other languages
Dutch (nl)
Inventor
Lu Hua
Zhu Yifeng
Sun Hanzhou
Jiang Zhe
Yu Jian
Tang Haijun
Li Rong
Guo Xiaodong
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Cosco Shipping Qidong Offshore Co Ltd
Univ Guangdong Technology
Cosco Shipping Shipyard Nangtong Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
    • B63B73/43—Welding, e.g. laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The invention discloses a construction method for a stern section of a cargo transfer vessel, which relates to the field of cargo transfer vessel engineering. The construction 5 method comprises the following steps: preparing a stern structure of ship hull of a cargo transfer vessel; dividing the obtained stern structure into the first stern section and the second stern section; constructing the first stern section; constructing the second stern section; and joining up the first stern section and the second stern section. According to the features of the stern devices and the structure, as well as the 10 installation requirements; a modular assembly method is adopted in the invention; which shortens the entire construction period of the cargo transfer vessel; and solves the problems of hoisting process and transportation on installation site, further enables integrated outfitting and ship coating so as to instruct the assembly work for on-site workers; thereby improving the construction efficiency. Furthermore; rational 15 segmented construction steps are adopted to reduce the number of weld joints and improve the construction quality.

Description

-1-
A CONSTRUCTION METHOD FOR A STERN
SECTION OF A CARGO TRANSFER VESSEL Technical Field The invention relates to the field of cargo transfer vessel engineering, and particularly to a construction method for a stern section of a cargo transfer vessel. Background Art Conventional transshipment of crude oil is usually performed by a combined method of "FPSO (Floating Production Storage and Offloading) + shuttle tanker".
Taking into account the complex sea state under joint effect of wind, wave and current in the FPSO operating site, shuttle tankers with advanced dynamic positioning capacity can perform better in approaching the FPSO for transferring crude oil. However, currently, the price of the international crude oil remains low, and the transport volume of crude oil for single shipment is relatively low by transferring mode of "FPSO + shuttle tanker", so the transportation cost rises higher. Especially in the case of long- distance shipment, the aforementioned shortages become particularly significant, and extremely decrease the profit margin of crude oil exploitation companies.
Compared with shuttle tankers, VLCC (Very Large Crude Carrier) is capable of much larger transport volume per shipment, which greatly reduces the cost of transferring offshore crude oil. However, conventional VLCC lacks dynamic positioning capability. In the event of a VLCC mooring at the FPSO platform for loading and transferring crude oil, complex multi-point mooring and auxiliary ships are required to establish a relatively stable state, and the mooring has relatively high requirements on seabed conditions in the marine environment of operating area.
Therefore, to address the aforementioned demand in the market, CTV (Crude Transfer Vessel) has come into being as a transferring bridge between VLCC and FPSO.
Since CTV has a narrow overall space and contains multiple types of equipment onboard, the segmentation and construction of the ship stern not only require considering the general principles such as structural features and strength, construction technologies and operating conditions, production schemes and material quantity of working procedures, and hoisting and transportation capacity, but also require comprehensively studying specific factors including installation timing of certain types
-2- of giant equipment, the integrity of tanks with special functions and special requirements of the construction method, the convenience of constructing outfitting units, technical requirements of paint coating.
In this way, the construction method can avoid affecting the period of erection on the slipway as well as the efficiency of sectional and overall outfitting.
Contents of the Invention The invention aims to propose a construction method for a stern section of a cargo transfer vessel.
For this purpose, the invention adopts the following technical solutions:
A construction method for a stern section of a cargo transfer vessel comprises the following steps:
Step S100: Prepare a stern structure of the ship hull of the cargo transfer vessel; Step S200: Divide the stern structure of the vessel into two sections, consisting of the first stern section and the second stern section; wherein, the first stern section includes the first stern bottom plate, the first broadside subassembly, the first deck subassembly, the first longitudinal bulkhead subassembly, the first tank top subassembly, the first propeller base, the bottom shell plate, and the angled deck; The second stern section includes the second stern bottom plate, the second propeller base, the first watertight bulkhead, the first watertight floor, the second watertight floor, the first watertight tank underframe, the second tank top subassembly, the second broadside subassembly, and the second deck subassembly; Step S300: Respectively fabricate the first broadside subassembly, the first deck subassembly, the first longitudinal bulkhead subassembly, the first tank top subassembly, the bottom shell plate, the angled deck and equipment base;
Step S400: Construct the first stern section; Step S401: Splice and weld a plurality of rectangular steel plates to respectively fabricate the first shell plate and the second shell plate, mount the two shell plates on the moulding bed, and fix the position by the angle steel array setting on the moulding bed, further fabricate the first stern bottom plate by welding the spliced first and second shell plates, and reinforce the first stern bottom plate by welding stiffener on it; Step S402: Weld a plurality of connecting beams to the middle area of the first stern bottom plate in a circumferential distribution, weld the bottom of a bracket to the first stern bottom plate, and weld the outer side of the bracket to one end of the connecting
-3-
beams, further hoist the first propeller flange onto the bracket position, and weld the outer side of the first propeller flange to the connecting beams and the bracket respectively, thereby forming the first propeller base on the first stern bottom plate; Step S403: Turn over the first tank top subassembly, hoist the first tank top subassembly onto the right side of the propeller base and weld them, thereby fixing the position of the first tank top subassembly on the first stern bottom plate; Step S404: Weld the front side of the bottom shell plate to the middle of left edge of the first stern bottom plate, and weld the left end of angled deck respectively to the right side of the bottom shell plate and the upper surface of the first stern bottom plate,
thereby fixing the position of the angled deck on the first stern bottom plate;
Step S405: Turn over the first longitudinal bulkhead subassembly, hoist the first longitudinal bulkhead subassembly onto the front side of the angled deck and weld them, thus fixing the position of the first longitudinal bulkhead subassembly on the first stern bottom plate;
Step S406: Turn over the first deck subassembly and hoist it onto the right side of the angled deck, then weld the left side of the deck subassembly to the right side of the angled deck, and weld the bottom of the deck subassembly to the tank top, thereby fixing the position of the deck subassembly;
Step S407: Turn over the first broadside subassembly and hoist it onto the rear side of the first deck subassembly, then weld the front side of the first broadside subassembly respectively to the rear side of the angled deck, the rear side of the first deck subassembly and the first stern bottom plate, thereby fixing the position of the first broadside subassembly on the first stern bottom plate;
Step S408: Install equipment base on the upper surfaces of the first broadside subassembly, the first deck subassembly and the first longitudinal bulkhead subassembly, thus completing the construction of the first stern section;
Step S500: Respectively fabricate the second propeller flange, the first watertight bulkhead, the first watertight floor, the second watertight floor, the first watertight tank underframe, the second tank top subassembly, the second broadside subassembly, the second deck subassembly and deck foundation;
Step S600: Construct the second stern section: Step S601: Splice and weld a plurality of rectangular steel plates to respectively fabricate the third shell plate and the fourth shell plate, mount the two shell plates on a
-4-
moulding bed, and fix the position by the angle steel array setting on the moulding bed,
further fabricate the second stern bottom plate by welding the spliced third and fourth shell plates, and reinforce the second stern bottom plate by welding stiffener on it;
Step S602: Weld a plurality of connecting beams to the middle area of the second stern bottom plate in a circumferential distribution, weld the bottom of a bracket to the second stern bottom plate, and weld the outer side of the bracket to one end of the connecting beams, further hoist the second propeller flange onto the bracket position,
and weld the outer side of the second propeller flange respectively to the connecting beams and the bracket; the second propeller flange is fixed on the second stern bottom plate by above welding process, thereby forming the second propeller base on the second stern bottom plate;
Step S603: First, respectively position the first watertight floor and the second watertight floor on the left and right sides of the second propeller base; then in respective way, weld the junction between the first watertight floor and the second stern bottom plate, as well as the junction between the second watertight floor and the second stern bottom plate; next, respectively weld the junction between the first watertight bulkhead and the left edge of the second stern bottom plate as well as the Junction between the first watertight bulkhead and the first watertight floor, whereby the first watertight floor, the second watertight floor and the first watertight bulkhead are fixed in position;
Step S604: Hoist the first watertight tank underframe onto the upper side of the second stern bottom plate, and weld the bottom of the first watertight tank underframe to the second stern bottom plate, thereby fixing the position of the first watertight tank underframe on the second stern bottom plate;
Step S605: Turn over the second tank top subassembly, hoist the second tank top subassembly onto the right side of the second watertight floor and weld them, thereby fixing the position of the second tank top subassembly on the second stern bottom plate;
Step S606: First, turn over the second broadside subassembly and hoist it to the front side of the second stern bottom plate, and turn over the deck subassembly and hoist it onto the upper side of the second stern bottom plate, then weld the junction between the second broadside subassembly, the second deck subassembly and the second stern bottom plate;
5. Step S607: Install deck foundation on the second deck subassembly, thus completing the construction of the second stern section; Step S700: Join up the first stern section and the second stern section. Preferably, the fabricating process of the first broadside subassembly further includes the following steps: Step S311: Mount in tandem the first side shell and the second side shell on the moulding bed, fix the position by the angle steel array setting on the moulding bed, and further weld the junction between the first side shell and the second side shell, Step S312: Weld the rib plates, the third watertight floor and the fourth watertight floor to the first side shell; Step S313: Respectively weld the first box subassembly, the second box subassembly, the beams and the girders to the first deck substrate, then hoist the first deck substrate onto one side of the first side shell and weld them, thereby forming the second longitudinal bulkhead subassembly; Step S314: Turn over the welded second longitudinal bulkhead subassembly onto the upper side of the third side shell and weld them together, and then weld the horizontal girder to one side of the second longitudinal bulkhead subassembly, thereby forming the first broadside subassembly; Step S315: Measure the first broadside subassembly to ensure that the horizontal girder meets the requirements of flatness.
Preferably, the fabricating process of the first deck subassembly further includes the following steps: Step S321: Mount the second deck substrate horizontally on the moulding bed, and fix it by the angle steel array setting on the moulding bed to set up a construction reference plane on the second deck substrate; Step S322: First, mount the girders on the first web frame, mount the girders and the bracket on the second web frame, then mount in tandem the first web frame and the second web frame on the second deck substrate, and weld the third deck substrate to the upper sides of the first web frame and the second web frame to form a double-deck structure; Step S323: Vertically insert the fifth watertight floor into the second deck substrate at the location near the bow, and weld one side of the fifth watertight floor respectively to the second deck substrate and the third deck substrate; further, hoist the third box
6- subassembly onto the other side of the fifth watertight floor, and weld the third box subassembly to the fifth watertight floor and the second deck substrate; Step S324: Hoist the sixth watertight floor onto one side of the fifth watertight floor, and weld the sixth watertight floor to the fifth watertight floor and the third deck substrate; Step S325: Turn round the third longitudinal bulkhead subassembly to arrange rib plates outwards, and hoist it onto the third deck substrate, then weld the third longitudinal bulkhead subassembly respectively to the third deck substrate and the sixth watertight floor, thereby forming the first deck subassembly.
Preferably, the fabricating process of the first longitudinal bulkhead subassembly further includes the following steps: Step S331: Horizontally mount the fourth side shell on the moulding bed, and fix it by the angle steel array setting on the moulding bed to set up a construction reference plane on the fourth side shell; Step S332: Mount the girder on the seventh watertight floor, and hoist the seventh watertight floor onto the fourth side shell, then weld the bottom of the seventh watertight floor to the fourth side shell; Step S333: Hoist the eighth watertight floor onto the inner side of the seventh watertight floor, then respectively weld the eighth watertight floor to the seventh watertight floor and the fourth side shell; Step S334: Mount the fifth side shell on the moulding bed, and position the fifth side shell by the angle steel array setting on the moulding bed, then weld the junction of the fourth side shell and the fifth side shell; Step S335: Hoist the fourth deck substrate to one side of the seventh watertight floor, and weld the fourth deck substrate respectively to the seventh watertight floor, the eighth watertight floor, the fourth side shell and the fifth side shell, thereby forming the first longitudinal bulkhead subassembly.
Preferably, the fabricating process of the first tank top subassembly includes the following steps: Step S341: Horizontally mount the bottom plate on the moulding bed, and fix it by the angle steel array setting on the moulding bed to set up a construction reference plane on the bottom plate; Step S342: Install rib plates between the first bulkhead, the second bulkhead and the
7- third bulkhead; Step S343: Hoist the first bulkhead, the second bulkhead, the third bulkhead and the rib plates onto the bottom plate, and weld the bottoms of the first bulkhead, the second bulkhead, the third bulkhead and the rib plates to the bottom plate, thereby forming the first tank top subassembly.
Preferably, the fabricating process of the second broadside subassembly includes the following steps: Step S511: Mount a plurality of steel plates on the moulding bed, and fix them by the angle steel array setting on the moulding bed, further weld the junction between the steel plates to form the sixth side shell; Step S512: Hoist the fifth deck substrate onto the sixth side shell, and weld the bottom of the fifth deck substrate to the rear edge of the sixth side shell, Step S513: Respectively weld the sides of the second watertight bulkhead, the rb plates, the beam, and the ninth watertight floor to the inner side of the fifth deck substrate, then respectively weld the bottoms of the second watertight bulkhead, the rib plates, the beams, and the ninth watertight floor to the upper surface of the sixth side shell, thereby forming the first broadside component; Step S514: Turn over the first broadside component and hoist it onto the seventh side shell, weld the junction between the first broadside component and the seventh side shell, and weld the second broadside component to the front side of the first broadside component, thereby forming the second broadside subassembly.
Preferably, the fabricating process of the second deck subassembly includes the following steps: Step S521: Horizontally mount the sixth deck substrate on the moulding bed, and fix it by the angle steel array setting on the moulding bed to set up a construction reference plane on the sixth deck substrate; Step S522: First, weld the tenth watertight floor to the left edge of the sixth deck substrate, then hoist the third watertight bulkhead onto one side of the sixth deck substrate, weld the third watertight bulkhead to the tenth watertight floor and the sixth deck substrate; Step S523: First, install beams on two girders arranged in parallel, thereby the beams and girders forming the second watertight tank underframe, then hoist the second watertight tank underframe onto the sixth deck substrate, weld the second
-8- watertight tank underframe to the sixth deck substrate, and weld one end of the girders to the third watertight bulkhead; Step S524: Respectively hoist the eleventh watertight floor and the third web frame onto the sixth deck substrate, weld one side of the eleventh watertight floor to the unconnected end of the girders of the second watertight tank underframe, and then weld the third web frame to the other side of the eleventh watertight floor; Step S525: First, hoist the seventh deck substrate and weld it to the sixth deck substrate, thus forming the double-deck structure, then weld the bottom of the twelfth watertight floor to the seventh deck substrate; Step S526: Hoist the third longitudinal bulkhead subassembly to the rear side of the seventh deck substrate, and weld the third longitudinal bulkhead subassembly to the seventh deck substrate and the sixth deck substrate, thus forming the second deck subassembly.
The beneficial effects of the invention are as follows: According to the features of the stern devices and the structure, as well as the installation requirements, the invention adopts a modular assembly method, which shortens the entire construction period of the cargo transfer vessel, and solves the problems of hoisting process and transportation on installation site, further enables integrated outfitting and ship coating so as to instruct the assembly work for on-site workers, thereby improving the construction efficiency; furthermore, the invention adopts rational segmented construction steps, thereby reducing the number of weld joints and improving the construction quality.
Drawing Description The invention is further described with the drawings; however, the embodiments in the drawings constitute no limit to the protection scope of the invention.
Fig. 1 is an overall flow chart of the invention; Fig. 2 is a schematic diagram of the location of the first stern section and the second stern section of the invention; Fig. 3 is a flow chart of the construction of the first stern section of the invention; Fig. 4 is a flow chart of the construction of the second stern section of the invention; Fig. 5 is a flow chart of the fabrication of the first broadside subassembly of the invention;
-9- Fig. 6 1s a flow chart of the fabrication of the first deck subassembly of the invention; Fig. 7 is a flow chart of the fabrication of the first longitudinal bulkhead subassembly of the invention; Fig. 8 is a flow chart of the fabrication of the first tank top subassembly of the invention; Fig. 9 is a flow chart of the fabrication of the second broadside subassembly of the invention; Fig. 10 is a flow chart of the fabrication of the second deck subassembly of the invention. Embodiments The technical solutions of the invention will be further described below in combination with the drawings and specific embodiments.
The construction method for a stern section of a cargo transfer vessel in this embodiment, referring to Figs. 1 and 2, includes the following steps: Step S100: Prepare a stern structure of the ship hull of the cargo transfer vessel, in which with some devices are required, including crude offloading devices and propellers; Step S200: According to the principle of segmented division of the cargo transfer vessel, distribute the platform which holds stern propellers to the identical segment for construction. Thus, the stem structure of the vessel is divided into two sections, including the first stern section 161 and the second stern section 171. Wherein, the first stern section includes the first stern bottom plate, the first broadside subassembly SS1A, the first deck subassembly DK 1A, the first longitudinal bulkhead subassembly LB4BI, the first tank top subassembly TT1A, the first propeller base, the bottom shell plate BS2A, and angled deck DK1B; The second stern section includes the second stern bottom plate, the first propeller flange FL 1, the first watertight bulkhead TSOB, the first watertight floor TB2B, the second watertight floor TB 16B, the first watertight tank underframe, the second tank top subassembly TT1AA, the second broadside subassembly SS1A, and the second deck subassembly DK I AA; Step S300: Respectively fabricate the first broadside subassembly SS1A, the first deck subassembly DK 1A, the first longitudinal bulkhead subassembly LB4B 1, the first tank
-10- top subassembly TT1A, the propeller base, the bottom shell plate BS2A, the angled deck DK 1B and equipment base; Step S400: Construct the first stern section; Step S500: Respectively fabricate the second propeller flange FL2, the first watertight bulkhead TSOB, the first watertight floor TB2B, the second watertight floor TB16B, the first watertight tank underframe, the second tank top subassembly TT1AA, the second broadside subassembly SS1A, the second deck subassembly DK1AA and deck foundation ET6A,; Step S600: Construct the second stern section; Step S700: Join up the first stern section and the second stern section.
Wherein, referring to Fig. 3, the construction of the first stern section in Step S400 further includes the following steps: Step S401: Splice and weld a plurality of rectangular steel plates to respectively fabricate the first shell plate and the second shell plate, mount the two shell plates on the moulding bed, and fix the position by the angle steel array setting on the moulding bed, further fabricate the first stern bottom plate by welding the spliced first and second shell plates, and reinforce the first stern bottom plate by welding stiffener on it; Step S402: Weld a plurality of connecting beams GR9B, GR9C, BMT1A, BMT2A, BMT3A, BMT4A, BMTIB, BMT2B, BMT3B, BMT4B, BMT10B and BM10A to the middle area of the first stern bottom plate in a circumferential distribution, weld the bottom of the bracket BKTA to the first stern bottom plate, and weld the outer side of the bracket BKTA to one end of the connecting beams, further hoist the first propeller flange FL 1 onto the bracket position, and weld the outer side of the first propeller flange FL1 to the connecting beams and the bracket respectively, thereby forming the first propeller base on the first stern bottom plate; Step S403: Turn over the first tank top subassembly TT1A, hoist the first tank top subassembly to the right side of the propeller base and weld them, thereby fixing the position of the first tank top subassembly TT1A on the first stern bottom plate; Step S404: Weld the front side of the bottom shell plate BS2A to the middle of left edge of the first stern bottom plate, and weld the left end of angled deck DK1B respectively to the right side of the bottom shell plate and the upper surface of the first stern bottom plate, thereby fixing the position of the angled deck on the first stern bottom plate;
-11- Step S405: Turn over the first longitudinal bulkhead subassembly LB4B1, hoist the first longitudinal bulkhead subassembly onto the front side of the angled deck DK1B and weld them, thus fixing the position of the first longitudinal bulkhead subassembly LB4B1 on the first stern bottom plate; Step S406: Turn over the first deck subassembly DK 1A and hoist it to the right side of the angled deck DK 1B, then weld the left side of the deck subassembly DK 1A to the right side of the angled deck, and weld the bottom of the deck subassembly DK 1A to the tank top TT1A, thereby fixing the position of the deck subassembly DK 1A; Step S407: Turn over the first broadside subassembly SS1A and hoist it to the rear side of the first deck subassembly DK 1A, then weld the front side of the first broadside subassembly SS1A respectively to the rear side of the angled deck DK1B, the rear side of the first deck subassembly DK 1A and the first stern bottom plate, thereby fixing the position of the first broadside subassembly SS1A on the first stern bottom plate; Step S408: Install equipment base FD1A, FD2A, FD3A, FD4A, FD6A, FD3B and FD6B on the upper surfaces of the first broadside subassembly SS1A, the first deck subassembly DK 1A and the first longitudinal bulkhead subassembly LB4B1, thus completing the construction of the first stern section.
Referring to Fig. 4, the construction of the second stern section in Step S600 further includes the following steps: Step S601: Splice and weld a plurality of rectangular steel plates to respectively fabricate the third shell plate and the fourth shell plate, mount the two shell plates on a moulding bed, and fix the position by the angle steel array setting on the moulding bed, further fabricate the second stern bottom plate by welding the spliced third and fourth shell plates, and reinforce the second stern bottom plate by welding stiffener on it; Step S602: Weld a plurality of connecting beams BTMXX to the middle area of the second stern bottom plate in a circumferential distribution, weld the bottom of the bracket BKTXX to the second stern bottom plate, and weld the outer side of the bracket to one end of the connecting beams, further hoist the second propeller flange FL2 onto the bracket position, and weld the outer side of the second propeller flange FL2 respectively to the connecting beams BTMXX and the bracket BKTXX, the second propeller flange FL2 is fixed on the second stern bottom plate by above welding process, thereby forming the second propeller base on the second stern bottom plate;
-12- Step S603: First, respectively position the first watertight floor TB2B and the second watertight floor TB16B on the left and right sides of the second propeller base, and respectively weld the junction between the first watertight floor TB2B and the second stern bottom plate, as well as the junction between the second watertight floor TB16B and the second stern bottom plate, then weld the junction between the first watertight bulkhead TSOB and the left edge of the second stern bottom plate, as well as the junction between the first watertight bulkhead TSOB and the first watertight floor TB2B, whereby the first watertight floor TB2B, the second watertight floor TB 16B and the first watertight bulkhead TSOB are fixed in position; Step S604: Hoist the first watertight tank underframe onto the upper side of the second stern bottom plate, and weld the bottom of the first watertight tank underframe to the second stern bottom plate, thereby fixing the position of the first watertight tank underframe on the second stern bottom plate, wherein the first watertight tank underframe consists of the girder GR5C, the beams BM4F, BM4G, BM4H, BMG and BMOoG; Step S605: Turn over the second tank top subassembly TT1AA, hoist the second tank top subassembly onto the right side of the second watertight floor TB16B and weld them, thereby fixing the position of the second tank top subassembly TT1AA on the second stern bottom plate; Step S606: First, turn over the second broadside subassembly SS1A and hoist it onto the front side of the second stern bottom plate, tum over the deck subassembly DK1A and hoist it onto the second stern bottom plate, and then weld the junction between the second broadside subassembly SS1A, the second deck subassembly DK1AA and the second stern bottom plate; Step S607: Install deck foundation ET6A on the second deck subassembly DK1AA, thus completing the construction of the second stern section; Therefore, by using the dividing method in Step S200 of the embodiment, fillet welding in the vertical position and fillet welding in the overhead position are avoided during the structural welding construction of the ship stern of the cargo transfer vessel so as to improve the work efficiency.
In Step S200, the segment division principles of the cargo transfer vessel are as follows. The segment must not be too small and the cargo compartment area should mainly be circular segment. These principles reduce the deformation occurred during
-13- the segment transfer process, and reduce the total assembling steps, resulting in less accumulation of errors.
In addition, segment assembling seams with large openings should be avoided.
The first stern section 161 is constructed using Steps S401-S408. The proposed construction method improves the assembly efficiency of the first stern section, thus enhancing the structural stability of the first stern section.
First, the angle steel array on the moulding bed is used to locate the position of the first shell plate and the second shell plate in splicing and welding process, thereby ensuring the precision of the first stern bottom plate formed by welding.
Second, the first stern bottom plate is reinforced by welding stiffeners, which provide connection structures for welding the connecting beams GR9B, GR9C, BMT IA, BMT2A, BMT3A, BMT4A, BMTIB, BMT2B, BMT3B, BMT4B, BMT10B and BM10A, thereby enhancing the stability of the connecting beams structure.
Further, the first propeller flange FL1 with the bracket BKTA is hoisted and installed, thereby forming the first propeller base on the first stern bottom plate, which ensures structural stability and precision of the propeller base.
After constructing the propeller base on the first stern bottom plate, sequentially, the first tank top subassembly TT 1A, the bottom shell plate BS2A, the angled deck DK IB, the first longitudinal bulkhead subassembly LB4B 1, the first broadside subassembly SS1A and equipment base are welded onto the first stern bottom plate, thereby realizing the modularization of the first stern section 161 construction, which greatly shortens the entire construction period of the vessel.
Similarly, as both the second stern section 171 and the first stern section 161 are required to install the propeller base, the second stem section 171 is constructed using Steps S601-S607. First, the angle steel array on the moulding bed is used to locate the position of the third shell plate and the fourth shell plate in splicing and welding process, thereby ensuring the precision of the second stern bottom plate formed by welding.
Second, the second stern bottom plate is reinforced by welding stiffeners, which provide connection structures for welding the connecting beams BTMXX, thereby enhancing the structural stability of connecting beams.
Further, the second propeller flange FL2 with the bracket BKTXX is hoisted and installed, thereby forming the second propeller base on the second stern bottom plate, which ensures the structural stability and precision of the propeller base.
After constructing the propeller base on the second stern bottom plate, sequentially, the
-14- first watertight floor TB2B, the second watertight floor TB16B, the first watertight bulkhead TSOB, the first watertight tank underframe, the second tank top subassembly TT1AA, the second broadside subassembly SS1A and the second deck subassembly DK 1AA are welded onto the second stern bottom plate, thereby realizing the modularization of the second stern section 171 construction, which greatly shortens the entire construction period of the vessel.
Preferably, referring to Fig. 5, the fabricating process of the first broadside subassembly SS1A includes the following steps: Step S311: Mount in tandem the first side shell LB13A and the second side shell LB13B on the moulding bed, fix them by the angle steel array setting on the moulding bed, and further weld the junction between the first side shell LB13A and the second side shell LB13B; Step S312: Weld the rib plates FR24A, FR20A, FR12A, FR8A, FR4A and FR2A, the third watertight floor TB16B and the fourth watertight floor TBOA to the first side shell LB13A.
The tandem mounted sequence are as follows: the rib plates FR24A, FR20A, the third watertight floor TB16B, the rib plates FR12A, FR8A, FR4A, FR2A, and the fourth watertight floor TBOA, wherein the fourth watertight floor TBOA is located on the edge of the second side shell LB13B; Step S313: Respectively weld the first box subassembly BX1A, the second box subassembly BX2A, the beams BM9A, BM9B and the girders GR14A and GR14B to the first deck substrate DK IC, then hoist the first deck substrate DK1C onto one side of the first side shell LB13A, and weld the first deck substrate DK 1C to the rib plates FR24A, FR20A, the third watertight floor TB 16B, the rib plates FR12A, FR8A, FR4A, FR2A, the fourth watertight floor TBOA, the first side shell LB13A and the second side shell LB13B on one side of the first side shell LB13A, thereby forming the second longitudinal bulkhead subassembly LB13A; Step S314: Turn over the welded second longitudinal bulkhead subassembly LB13A onto the upper side of the third side shell and weld them together, then weld the horizontal girder SR2A to one side of the second longitudinal bulkhead subassembly LB13A, thereby forming the first broadside subassembly SS1A; Step S315: Measure the first broadside subassembly SS1A to ensure that the horizontal girder SS2A meets the requirements of flatness.
The method of steps S311-S315 improves the construction efficiency and quality
-15- of the first broadside subassembly SS1A, ensures the precision of installation of the first broadside subassembly SS1A on the first stern section, thereby realizing the modularization of construction for the first broadside subassembly SS1A, and further shortens the construction period of the cargo transfer vessel. Preferably, referring to Fig. 6, the fabricating process of the first deck subassembly DK1A includes the following steps: Step S321: Mount the second deck substrate DK 1A1 horizontally on the moulding bed, and fix the second deck substrate DK1A 1 by the angle steel array setting on the moulding bed to set up a construction reference plane on the second deck substrate DKIAI: Step S322: First, mount the girders GRI2F, GR11C on the first web frame FR24B, mount the girders GR2B, GR2C and the bracket BK3E on the second web frame FR20B, then mount in tandem the first web frame FR24B and the second web frame FR20B on the second deck substrate DK 1 A1, and weld the third deck substrate DK2A to the upper sides of the first web frame FR24B and the second web frame FR20B to form a double-deck structure; Step S323: Vertically insert the fifth watertight floor TB 16A into the second deck substrate DK1A1 at the location near the bow, and weld one side of the fifth watertight floor TB16A respectively to the second deck substrate DK1A1 and the third deck substrate DK2A, further, hoist the third box subassembly BM12C onto the other side of the fifth watertight floor TB16A, and weld the third box subassembly BM12C to the fifth watertight floor TB16A and the second deck substrate DK1A1; Step S324: Hoist the sixth watertight floor TB18A onto one side of the fifth watertight floor TB16A, and weld the sixth watertight floor TB 18 A to the fifth watertight floor TBI16A and the third deck substrate DK2A; Step S325: Turn round the third longitudinal bulkhead subassembly LB11A to arrange rib plates outwards, and hoist it onto the third deck substrate DK2A, and then weld the third longitudinal bulkhead subassembly LB11A respectively to the third deck substrate DK2A and the sixth watertight floor TB18A, thereby forming the first deck subassembly DKIA.
The method of steps S321-S325 improves the construction efficiency and quality of the first deck subassembly DK1A, and ensures the installation precision of the first deck subassembly DK 1A to the first stern section, thereby realizing the modularization
-16- of construction for the first deck subassembly DK 1 A, further reducing the construction period of the cargo transfer vessel.
Preferably, referring to Fig. 7, the fabricating process of the first longitudinal bulkhead subassembly LB4B1 includes the following steps:
Step S331: Horizontally mount the fourth side shell LB4B on the moulding bed, and fix the fourth side shell LB4B by the angle steel array setting on the moulding bed to set up a construction reference plane on the fourth side shell LB4B,;
Step S332: Mount the girder GR3A on the seventh watertight floor TBOB, hoist the seventh watertight floor TBOB onto the fourth side shell LB4B, and then weld the bottom of the seventh watertight floor TBOB to the fourth side shell LB4B; Step S333: Hoist the eighth watertight floor TB2A onto the inner side of the seventh watertight floor TBOB, and then respectively weld the eighth watertight floor TB2A to the seventh watertight floor TBOB and the fourth side shell LB4B; Step S334: Mount the fifth side shell LB4A on the moulding bed at the front side of the fourth side shell LB4B, position the fifth side shell LB4A by the angle steel array setting on the moulding bed, and then weld the junction between the fourth side shell LB4B and the fifth side shell LB4A; Step S335: hoist the fourth deck substrate DK1E to one side of the seventh watertight floor TBOB, and weld the fourth deck substrate DK1E respectively to the seventh watertight floor TBOB, the eighth watertight floor TB2A, the fourth side shell LB4B and the fifth side shell LB4A, thereby forming the first longitudinal bulkhead subassembly LB4B1. The method of steps S331-S335 improves the construction efficiency and quality of the first longitudinal bulkhead subassembly LB4B 1, and ensures the precision of installation of the first longitudinal bulkhead subassembly LB4B1 on the first stern section, thereby realizing modularization of construction for the first longitudinal bulkhead subassembly LB4B1 and reducing the construction period of the cargo transfer vessel.
Preferably, the structure and fabricating method of the first tank top subassembly TTI1A are identical to the ones of the second tank top subassembly TT1AA.
Referring to Fig. 8, the fabricating process of the first tank top subassembly TT1A includes the following steps: Step S341: Horizontally mount the bottom plate TT1A1 on the moulding bed, and
-17- fix the bottom plate TT1A1 by the angle steel array setting on the moulding bed to set up a construction reference plane on the bottom plate TT1A1; Step S342: Install rib plates FR20C and FR24C between the first bulkhead LB3C, the second bulkhead LB8C and the third bulkhead LB10B; Step S343: Hoist the first bulkhead LB3C, the second bulkhead LB8C, the third bulkhead LB10B, the rib plates FR20C and FR24C onto the bottom plate TT1A1, and weld the bottoms of the first bulkhead LB3C, the second bulkhead LB8C, the third bulkhead LB10B, the rib plates FR20C and FR24C to the bottom plate TT1A1, thereby forming the first tank top subassembly TT1A.
The method of steps S341-S343 improves the construction efficiency and quality of the first tank top subassembly TT 1A and the second tank top subassembly TT1AA, further ensures the precision of installation of the first tank top subassembly TT1A to the first stern section as well as the precision of installation of the second tank top subassembly TT1AA to the second stern section, thereby realizing modularization of construction for the first tank top subassembly TT1A and the second tank top subassembly TT1AA, and reducing the construction period of the cargo transfer vessel. Preferably, referring to Fig. 9, the fabricating process of the second broadside subassembly SS1A1 includes the following steps: Step S511: Mount a plurality of steel plates on the moulding bed, fix them by the angle steel array setting on the moulding bed, and further weld the junction between the steel plates to form the sixth side shell LB13A1; Step S512: Hoist the fifth deck substrate DK 1B1 onto the sixth side shell LB13A1, and weld the bottom of the fifth deck substrate DK 1B1 to the rear edge of the sixth side shell LB13A 1, thus installing the fifth deck substrate DK IB 1 on the rear edge of the sixth side shell LB13A1; Step S513: Respectively weld the sides of the second watertight bulkhead TSOC, the rib plates FR4A 1, FR12B, FR20A 1, FR24A, the beam BM4C, and the ninth watertight floor TB 16C to the inner side of the fifth deck substrate DK 1B 1, then respectively weld the bottoms of the second watertight bulkhead TSOC, the rib plates FR4A1, FRI2B, FR20A1, FR24A, the beam BM4C, and the ninth watertight floor TB16C to the upper surface of the sixth side shell LB13A1, and from left to right the components are arranged on the sixth side shell LB13A1 in sequence as follows: the second watertight bulkhead TSOC, the rib plate FR4A 1, the beam BM4C, the rib plate
-18- FR12B, the ninth watertight floor TB 16C, the rib plates FR2OA 1 and FR24A, wherein, the second watertight bulkhead TSOC is located on the left edge of the sixth side shell LB13A 1, thereby forming the first broadside component LB 13A2; Step S514: Turn over the first broadside component LB 13 A2 and hoist it onto the seventh side shell LB13A3, weld the junction between the first broadside component LB13A2 and the seventh side shell LB13A3, and weld the second broadside component SS1B to the front side of the first broadside component LB13A2, thereby forming the second broadside subassembly SSIAI. The method of steps S511-S514 improves the construction efficiency and quality of the second broadside subassembly SS1A1, and ensures the precision of installation of the second broadside subassembly SS1A1 on the second stern section, thereby realizing modularization of construction for the second broadside subassembly SS1A1 and reducing the construction period of the cargo transfer vessel.
Preferably, referring to Fig. 10, the fabricating process of the second deck assembly DKI1AA includes the following steps: Step S521: Horizontally mount the sixth deck substrate DK1A2 on the moulding bed, and fix the sixth deck substrate DK 1 A2 by the angle steel array setting on the moulding bed to set up a construction reference plane on the sixth deck substrate DKIA2; Step S522: First, weld the tenth watertight floor TB2A to the left edge of the sixth deck substrate DK 1 A2, then hoist the third watertight bulkhead TSOA onto one side of the sixth deck substrate DK 1 A2, and weld the third watertight bulkhead TSOA to the tenth watertight floor TB2A1 and the sixth deck substrate DK 1 A2; Step S523: First, install the beams BM4B, BM8B, BM12B and the girder GR12A on two parallel girders GR8B and GR3B, thereby forming the second watertight tank underframe, then hoist the second watertight tank underframe onto the sixth deck substrate DK 1 A2, weld the second watertight tank underframe to the sixth deck substrate DK 1 A2, and weld one end of the girder GR8B to the third watertight bulkhead TSOA; Step S524: Respectively hoist the eleventh watertight floor TB16A1 and the third web frame TB2OA onto the sixth deck substrate DK 1A2, weld one side of the eleventh watertight floor TB16A1 to the unconnected end of the girder GR8B of the second watertight tank underframe, and then weld the third web frame TB2OA to the other
-19- side of the eleventh watertight floor TBI6A 1; Step S525: First, hoist the seventh deck substrate DK95A, weld it to the sixth deck substrate DK 1 A2, thus forming the double-deck structure, and then weld the bottom of the twelfth watertight floor TB18A to the seventh deck substrate DK95A; Step S526: Hoist the third longitudinal bulkhead subassembly LB 10A to the rear side of the seventh deck substrate DK95A, and weld the third longitudinal bulkhead subassembly LB 10A to the seventh deck substrate DK95A and the sixth deck substrate DK 1 A2, thus forming the second deck subassembly DK IAA.
The method of steps S521-S526 improves the construction efficiency and quality of the second deck subassembly DK 1 AA, and ensures the precision of installation of the second deck subassembly DK 1AA on the second stern section, thereby realizing modularization of construction for the second deck subassembly DK1AA and reducing the construction period of the cargo transfer vessel.
The technical principles of the invention have been described above in conjunction with specific embodiments. It should be noted that the above embodiments are illustrative only for explaining principles of the invention, and constitute no limit to the protection scope of the invention. Based on the explanation herein, variations of the above-described embodiments may be made by those of ordinary skill in the art without creative work, but that the variations should be subject to the protection scope of the invention.

Claims (1)

.20- Conclusies.20- Conclusions 1. Constructiewerkwijze voor een achtersteven van een schip voor het verplaatsen van lading, die wordt gekenmerkt, doordat de constructie de volgende stappen omvat: Stap S100: bereid een constructie van een achtersteven van de scheepsromp van het schip voor het verplaatsen van lading voor; Stap S200: verdeel de constructie van de achtersteven van het schip in twee gedeelten, bestaande uit het eerste gedeelte van de achtersteven en het tweede gedeelte van de achtersteven, waarbij het eerste gedeelte van de achtersteven de eerste bodemplaat van de achtersteven, de eerste deelmontage van het breedschot, de eerste deelmontage van het dek, de eerste deelmontage van het langsschot, de eerste deelmontage van de tanktop, de eerste scheepsschroefbasis, de onderste behuizingsplaat en het schuine dek omvat; het tweede gedeelte van de achtersteven de tweede bodemplaat van de achtersteven, de tweede scheepsschroefbasis, het eerste waterdichte schot, de eerste waterdichte vloer, de tweede waterdichte vloer, het eerste waterdichte tankonderstel, de tweede deelmontage van de tanktop, de tweede deelmontage van het breedschot en de tweede deelmontage van het dek omvat; Stap S300: vervaardig respectievelijk de eerste deelmontage van het breedschot, de eerste deelmontage van het dek, de eerste deelmontage van het langsschot, de eerste deelmontage van de bovenkant van de tank, de onderste behuizingsplaat, het schuine dek en de basis van de uitrusting; Stap S400: construeer het eerste gedeelte van de achtersteven; Stap S401: splits en las een veelheid van rechthoekige stalen platen om respectievelijk de eerste behuizingsplaat en de tweede behuizingsplaat te vervaardigen, monteer de eerste behuizingsplaat en de tweede behuizingsplaat op het vormbed en bevestig de positie door middel van een hoekstalen behuizing op het vormbed, vervaardig verder de eerste bodemplaat van de achtersteven door de gesplitste eerste en tweede behuizingsplaten te lassen en versterk de eerste bodemplaat van de achtersteven door middel van een lasversteviger; Stap S402: las een veelheid van verbindingsbalken aan het middengedeelte van de eerste bodemplaat van de achtersteven middels een verdeling van de omtrek, las de onderkant van een beugel aan de eerste bodemplaat van de achtersteven en las de buitenkant van de beugel aan één uiteinde van de verbindingsbalken, hijs verder de eerste scheepsschroef-flens op de beugelpositie en las de buitenkant van de eerste scheepsschroef-flens aan respectievelijk de verbindingsbalken en de beugel, waardoor de eerste scheepsschroefbasis op de eerste bodemplaat van de achtersteven wordt gevormd;A construction method for a stern of a cargo moving ship, characterized in that the construction comprises the following steps: Step S100: Prepare a construction of a stern hull of the cargo moving ship; Step S200: Divide the structure of the stern of the ship into two parts, consisting of the first stern part and the second stern part, the first part of the stern being the first bottom plate of the stern, the first part assembly of the broadside, the first deck sub-assembly, the first longitudinal bulkhead, the first tank top sub-assembly, the first propeller base, the lower housing plate, and the sloping deck; the second part of the stern, the second bottom plate of the stern, the second propeller base, the first watertight bulkhead, the first watertight floor, the second watertight floor, the first watertight tank base, the second part of the tank top, the second part of the broadside and the second deck subassembly comprises; Step S300: Prepare the first partial assembly of the wide bulkhead, the first partial assembly of the deck, the first partial assembly of the longitudinal bulkhead, the first partial assembly of the top of the tank, the lower casing plate, the sloping deck and the base of the equipment, respectively; Step S400: Construct the first portion of the stern; Step S401: Split and weld a plurality of rectangular steel plates to manufacture the first casing plate and the second casing plate respectively, mount the first casing plate and the second casing plate on the molding bed, and fix the position by angle steel casing on the molding bed, manufacture further weld the first stern bottom plate by welding the split first and second casing plates and reinforce the first stern bottom plate by means of a welding stiffener; Step S402: Weld a plurality of connecting beams to the center portion of the first stern bottom plate by dividing the perimeter, weld the bottom of a brace to the first stern bottom plate, and weld the outside of the brace to one end of the connecting beams, further hoist the first propeller flange to the bracket position and weld the outside of the first propeller flange to the connecting beams and bracket respectively, thereby forming the first propeller base on the first stern bottom plate; Stap S403: keer de eerste deelmontage van de tanktop om, hijs de eerste deelmontage van de bovenkant van de tank op de rechterkant van de scheepsschroefbasis en las ze vast, waardoor de positie van de eerste deelmontage van de tanktop op de eerste bodemplaat van de achtersteven wordt bevestigd;Step S403: Invert the first part assembly of the tank top, hoist the first part assembly from the top of the tank onto the right side of the propeller base and weld them, making the position of the first part assembly of the tank top to the first bottom plate of the stern will be confirmed; Stap S404: las de voorkant van de onderste behuizingsplaat aan het midden van de linker rand van de eerste bodemplaat van de achtersteven en las het linker uiteinde van het schuine dek respectievelijk aan de rechterkant van de onderste behuizingsplaat en het bovenste oppervlak van de eerste bodemplaat van de achtersteven, waardoor de positie van het schuine dek op de eerste bodemplaat van de achtersteven wordt bevestigd;Step S404: Weld the front of the lower housing plate to the center of the left edge of the first stern bottom plate, and weld the left end of the inclined deck to the right side of the lower housing plate and the upper surface of the first stern bottom plate, respectively the stern, confirming the position of the sloping deck on the first stern bottom plate; Stap S405: keer de eerste deelmontage van het langsschot om, hijs de eerste deelmontage van het langsschot op de voorkant van het schuine dek en las ze vast, waardoor de positie van de eerste deelmontage van het langsschot op de eerste bodemplaat van de achtersteven wordt bevestigd;Step S405: Invert the first longitudinal bulkhead assembly, hoist the first longitudinal bulkhead assembly onto the front of the sloping deck and weld them, confirming the position of the first longitudinal bulkhead assembly to the first stern bottom plate ; Stap S406: keer om en hijs de eerste deelmontage van het dek op de rechterkant van het schuine dek, las vervolgens de linkerkant van de deelmontage van het dek aan de rechterkant van het schuine dek en las de onderkant van de deelmontage van het dek aan de bovenkant van de tank, waardoor de positie van de deelmontage van het dek wordt bevestigd;Step S406: Invert and hoist the first deck sub-assembly onto the right side of the slanted deck, then weld the left side of the deck sub-assembly to the right side of the slanted deck and weld the bottom of the deck sub-assembly to the top of the tank, confirming the position of the deck part assembly; Stap S407: keer de eerste deelmontage van het breedschot om en hijs deze naar de achterkant van de eerste deelmontage van het dek, las vervolgens de voorkant van de eerste deelmontage van het breedschot respectievelijk aan de achterkant van het schuine dek, de achterkant van de eerste deelmontage van het dek en de eerste bodemplaat van de achtersteven, waardoor de positie van de eerste deelmontage van het breedschot op de eerste bodemplaat van de achtersteven wordt bevestigd, Stap S408: installeer basis voor de apparatuur op de bovenste oppervlakken van de eerste deelmontage van het breedschot, de eerste deelmontage van het dek en de eerste deelmontage van het langsschot, waardoor de constructie van het eerste gedeelte van de achtersteven is voltooid;Step S407: Invert the first broadside part-assembly and hoist it to the rear of the first deck part-assembly, then weld the front of the first broadside part-assembly to the rear of the sloping deck, respectively, the back of the first part-assembly of the deck and the first stern bottom plate, thereby confirming the position of the first part-assembly of the broadside on the first stern bottom plate, Step S408: Install base for the equipment on the upper surfaces of the first part-assembly of the stern broadside, the first partial assembly of the deck and the first partial assembly of the longitudinal bulkhead, completing the construction of the first part of the stern; Stap S500: vervaardig respectievelijk de tweede scheepsschroef-flens, het eerste waterdichte schot, de eerste waterdichte vloer, de tweede waterdichte vloer, het eerste waterdichte tankonderstel, de tweede deelmontage van de bovenkant van de tank, de tweede deelmontage van het breedschot, de tweede deelmontage van het dek en de fundering van het dek;Step S500: Manufacture the second propeller flange, the first watertight bulkhead, the first watertight floor, the second watertight floor, the first watertight tank base, the second part-assembly of the top of the tank, the second part-assembly of the broadside, the second partial assembly of the deck and foundation of the deck; Stap S600: construeer het tweede gedeelte van de achtersteven:Step S600: Construct the second stern section: Stap S601: splits en las een veelheid van rechthoekige stalen platen om respectievelijk de derde behuizingsplaat en de vierde behuizingsplaat te vervaardigen, monteer de twee behuizingsplaten op een vormbed en bevestig de positie door middel van een hoekstalen behuizing op het vormbed, vervaardig verder de tweede bodemplaat van de achtersteven door de gesplitste derde en vierde behuizingsplaten te lassen en versterk de tweede bodemplaat van de achtersteven door middel van een lasversteviger;Step S601: Split and weld a plurality of rectangular steel plates to manufacture the third housing plate and the fourth housing plate respectively, mount the two housing plates on a molding bed and fix the position by angle steel housing on the molding bed, further fabricate the second bottom plate of the stern by welding the split third and fourth casing plates and reinforce the second stern bottom plate by means of a welding stiffener; Stap S602: las een veelheid van verbindingsbalken aan het middengedeelte van de tweede bodemplaat van de achtersteven middels een verdeling van de omtrek, las de onderkant van een beugel aan de tweede bodemplaat van de achtersteven en las de buitenkant van de beugel aan één uiteinde van de verbindingsbalken, hijs verder de tweede schroefflens op de beugelpositie en las de buitenkant van de tweede scheepsschroef-flens respectievelijk aan de verbindingsbalken en de beugel, waardoor de tweede scheepsschroef-flens op de tweede bodemplaat van de achtersteven wordt bevestigd, waardoor de tweede scheepsschroefbasis op de tweede bodemplaat van de achtersteven wordt gevormd; Stap S603: ten eerste plaats respectievelijk de eerste waterdichte vloer en de tweede waterdichte vloer aan de linker- en rechterkant van de tweede scheepsschroefbasis; las vervolgens respectievelijk de verbinding tussen de eerste waterdichte vloer en de tweede bodemplaat van de achtersteven, alsmede de verbinding tussen het tweede waterdichte schot en de tweede bodemplaat van de achtersteven; las vervolgens respectievelijk de verbinding tussen het eerste waterdichte schot en de linker rand van de tweede bodemplaat van de achtersteven en de verbinding tussen het eerste waterdichte schot en de eerste waterdichte vloer, waardoor de posities van de eerste waterdichte vloer, de tweede waterdichte vloer en het eerste waterdichte schot worden bevestigd; Stap S604: hijs het eerste waterdichte tankonderstel op de bovenkant van de tweede bodemplaat van de achtersteven en las de onderkant van het eerste waterdichte tankonderstel vast aan de tweede bodemplaat van de achtersteven, waardoor de positie van het eerste waterdichte tankonderstel op de tweede bodemplaat van de achtersteven wordt bevestigd; Stap S605: keer de tweede deelmontage van de bovenkant van de tank om, hijs de tweede deelmontage van de tanktop naar de rechterkant van de tweede waterdichte vloer en las ze vast, waardoor de positie van de tweede deelmontage van de bovenkant van de tank op de tweede bodemplaat van de achtersteven wordt bevestigd; Stap S606: ten eerste, keer om en hijs de tweede deelmontage van het breedschot naar de voorkant van de tweede bodemplaat van de achtersteven, keer om en hijs de deelmontage van het dek op de bovenkant van de tweede bodemplaat van de achtersteven en las vervolgens de verbinding tussen de tweede deelmontage van het breedschot, de tweede deelmontage van het dek en de tweede bodemplaat van de achtersteven; Stap S607: installeer de fundering van het dek op de tweede deelmontage van het dek, waarmee de constructie van het tweede gedeelte van de achtersteven wordt voltooid; Stap S700: verbind het eerste gedeelte van de achtersteven en het tweede gedeelte vanStep S602: Weld a plurality of connecting beams to the center portion of the second stern bottom plate by dividing the perimeter, weld the bottom of a brace to the second stern bottom plate, and weld the outside of the brace to one end of the connecting beams, further hoist the second propeller flange on the bracket position, and weld the outside of the second propeller flange to the connecting beams and bracket respectively, fixing the second propeller flange on the second stern bottom plate, fixing the second propeller base on the second bottom plate of the stern is formed; Step S603: First, place the first watertight floor and the second watertight floor on the left and right sides of the second propeller base, respectively; then respectively weld the joint between the first watertight floor and the second stern bottom plate, as well as the joint between the second watertight bulkhead and the second stern bottom plate; then weld the joint between the first watertight bulkhead and the left edge of the second stern bottom plate and the joint between the first watertight bulkhead and the first watertight floor, respectively, so that the positions of the first watertight floor, the second watertight floor and the first watertight bulkhead to be attached; Step S604: Lift the first watertight tank base on the top of the second stern bottom plate and weld the bottom of the first watertight tank base to the second stern bottom plate, thus adjusting the position of the first watertight tank base on the second stern bottom plate. stern is attached; Step S605: Invert the second part assembly of the tank top, lift the second part assembly of the tank top to the right side of the second waterproof floor and weld them, adjusting the position of the second part assembly of the tank top to the second bottom plate of the stern is attached; Step S606: First, turn over and lift the second broadside sub-assembly to the front of the second stern bottom plate, turn over and hoist the deck sub-assembly onto the top of the second stern bottom plate, and then weld the connection between the second broadside sub-assembly, the second deck sub-assembly and the second stern bottom plate; Step S607: Install the deck foundation on the second part assembly of the deck, completing the construction of the second part of the stern; Step S700: Connect the first part of the stern and the second part of 24- de achtersteven met elkaar.24- the stern with each other. 2. Constructiewerkwijze voor een achtersteven van een schip voor het verplaatsen van lading volgens conclusie 1 die wordt gekenmerkt, doordat de vervaardiging van de eerste deelmontage van het breedschot de volgende stappen omvat: Stap S311: monteer het eerste scheepsboord en het tweede scheepsboord achter elkaar op het vormbed en bevestig het eerste scheepsboord en het tweede scheepsboord door middel van een hoekstalen behuizing op het vormbed, las verder de verbinding tussen het eerste scheepsboord en de tweede scheepsboord vast; Stap S312: las de ribbenplaten, de derde waterdichte vloer en de vierde waterdichte vloer aan het eerste scheepsboord; Stap S313: las respectievelijk de eerste en de tweede deelmontage van de box, de balken en de liggers aan de eerste onderlaag van het dek, hijs vervolgens de eerste onderlaag van het dek naar één kant van het eerste scheepsboord en las ze vast, waardoor de tweede deelmontage van het langsschot wordt gevormd; Stap S314: keer de gelaste tweede deelmontage van het langsschot om op de bovenkant van het derde scheepsboord en las deze aan elkaar vast en las vervolgens de horizontale ligger aan één kant van de tweede deelmontage van het langsschot vast, waardoor de eerste deelmontage van het breedschot wordt gevormd; Stap S315: meet de eerste deelmontage van het breedschot om er zeker van te zijn, dat de horizontale ligger aan de eisen van vlakheid voldoet.The construction method for a stern of a cargo moving ship according to claim 1, characterized in that the manufacturing of the first partial assembly of the broadside comprises the following steps: Step S311: Assemble the first shipboard and the second shipboard sequentially on the forming bed and fix the first shipboard and the second shipboard by angle steel housing on the molding bed, further weld the connection between the first shipboard and the second shipboard; Step S312: Weld the rib plates, the third watertight floor and the fourth watertight floor to the first shipboard; Step S313: Weld the first and second part assemblies of the box, beams and girders respectively to the first deck underlayment, then hoist the first underlayment of the deck to one side of the first shipboard and weld them, making the second partial assembly of the longitudinal bulkhead is formed; Step S314: Invert the welded second longitudinal bulkhead assembly on the top of the third shipboard and weld them together, then weld the horizontal spar to one side of the second longitudinal bulkhead assembly, making the first broadside partial assembly is being formed; Step S315: Measure the first part-assembly of the bulkhead to ensure that the horizontal beam meets the flatness requirements. 3. Constructiewerkwijze voor een achtersteven van een schip voor het verplaatsen van lading volgens conclusie 1 die wordt gekenmerkt, doordat de vervaardiging van de eerste deelmontage van het dek de volgende stappen omvat: Stap S321: monteer de tweede onderlaag van het dek horizontaal op het vormbed, en bevestig de tweede onderlaag van het dek door middel van een hoekstalen behuizing op het vormbed om een referentievlak voor de constructie op het tweede onderlaag van het dek op te stellen;The construction method for a stern of a cargo moving ship according to claim 1, characterized in that the manufacturing of the first part-assembly of the deck comprises the following steps: Step S321: Assemble the second sub-layer of the deck horizontally on the forming bed , and fix the second deck underlay to the forming bed by means of an angle steel housing to establish a construction reference plane on the second deck underlay; 25.25. Stap S322: monteer eerst de liggers op het eerste verbindingsframe, monteer de liggers en de beugel op het tweede verbindingsframe, monteer vervolgens het eerste verbindingsframe en het tweede verbindingsframe achter elkaar op de tweede onderlaag van het dek en las de derde onderlaag van het dek op de bovenkanten van het eerste verbindingsframe en het tweede verbindingsframe om een dubbeldek-constructie te vormen; Stap S323: plaats de vijfde waterdichte vloer verticaal in de tweede onderlaag van het dek op de locatie bij de boeg en las één kant van de vijfde waterdichte vloer respectievelijk aan de tweede onderlaag van het dek en de derde onderlaag van het dek; hijs verder de derde deelmontage van de box naar de andere kant van de vijfde waterdichte vloer en las de derde deelmontage van de box aan de vijfde waterdichte vloer en de tweede onderlaag van het dek vast; Stap S324: hijs de zesde waterdichte vloer naar één kant van de vijfde waterdichte vloer en las de zesde waterdichte vloer aan de vijfde waterdichte vloer en de derde onderlaag van het dek vast; en Stap S325: draai de derde deelmontage van het langsschot om, om de ribbenplaten naar buiten te schikken en hijs de derde deelmontage van het langsschot op de derde onderlaag van het dek en las vervolgens de derde deelmontage van het langsschot aan respectievelijk de derde onderlaag van het dek en de zesde waterdichte vloer, waardoor de eerste deelmontage van het dek wordt gevormd.Step S322: First mount the beams on the first tie frame, mount the beams and bracket on the second tie frame, then mount the first tie frame and the second tie frame one after the other on the second deck underlay, and weld the third deck underlay the tops of the first connecting frame and the second connecting frame to form a double deck structure; Step S323: Place the fifth watertight floor vertically in the second deck underlayment at the bow location and weld one side of the fifth watertight floor to the second deck underlayment and the third deck underlayment respectively; further lift the third part assembly of the box to the other side of the fifth watertight floor and weld the third part assembly of the box to the fifth watertight floor and the second underlayment of the deck; Step S324: Lift the sixth waterproof floor to one side of the fifth waterproof floor and weld the sixth waterproof floor to the fifth waterproof floor and the third underlayment of the deck; and Step S325: Turn the third longitudinal bulkhead assembly over to arrange the rib plates outward and hoist the third longitudinal bulkhead assembly onto the third deck underlayment, then weld the third longitudinal bulkhead assembly to the third longitudinal bulkhead assembly respectively. the deck and the sixth watertight floor, forming the first part assembly of the deck. 4. Constructiewerkwijze voor een achtersteven van een schip voor het verplaatsen van lading volgens conclusie 1 die wordt gekenmerkt, doordat de vervaardiging van de deelmontage van het langsschot de volgende stappen omvat: Stap S331: monteer het vierde scheepsboord horizontaal op het vormbed en bevestig het vierde scheepsboord door middel van een hoekstalen behuizing op het vormbed om een referentievlak voor de constructie op het vierde scheepsboord op te stellen; Stap S332: monteer de ligger op de zevende waterdichte vloer en hijs de zevende waterdichte vloer op het vierde scheepsboord en las vervolgens de onderkant van de zevende waterdichte vloer aan het vierde scheepsboord vast; Stap S333: hijs de achtste waterdichte vloer op de binnenkant van de zevende waterdichte vloer, las vervolgens respectievelijk de achtste waterdichte vloer aan de zevende waterdichte vloer en het vierde scheepsboord vast; Stap S334: monteer het vijfde scheepsboord op het vormbed en plaats het vijfde scheepsboord door middel van een hoekstalen behuizing op het vormbed en las vervolgens de verbinding tussen het vierde scheepsboord en het vijfde scheepsboord vast; Stap S335: hijs de vierde onderlaag van het dek naar één kant van de zevende waterdichte vloer en las de vierde onderlaag van het dek respectievelijk aan de zevende waterdichte vloer, de achtste waterdichte vloer, het vierde scheepsboord en het vijfde scheepsboord, waardoor de eerste deelmontage van het langsschot wordt gevormd.The construction method for a stern of a cargo moving ship according to claim 1, characterized in that the manufacture of the longitudinal bulkhead partial assembly comprises the following steps: Step S331: Mount the fourth shipboard horizontally on the forming bed and fix the fourth shipboard by means of an angle steel housing on the forming bed to establish a reference plane for the structure on the fourth shipboard; Step S332: Assemble the girder on the seventh watertight floor and hoist the seventh watertight floor on the fourth shipboard, then weld the bottom of the seventh watertight floor to the fourth shipboard; Step S333: hoist the eighth watertight floor on the inside of the seventh watertight floor, then weld the eighth watertight floor to the seventh watertight floor and the fourth shipboard respectively; Step S334: Mount the fifth shipboard on the forming bed and place the fifth shipboard on the forming bed by angle steel housing, and then weld the connection between the fourth shipboard and the fifth shipboard; Step S335: Lift the fourth deck underlay to one side of the seventh watertight floor and weld the fourth deck underlay to the seventh watertight floor, the eighth watertight floor, the fourth shipboard and the fifth shipboard respectively, thus completing the first part assembly of the longitudinal bulkhead is formed. 5. Constructiewerkwijze voor een achtersteven van een schip voor het verplaatsen van lading volgens conclusie 1 die wordt gekenmerkt, doordat de vervaardiging van de eerste deelmontage van de bovenkant van de tank de volgende stappen omvat: Stap S341: monteer de bodemplaat horizontaal op het vormbed en bevestig de bodemplaat door middel van een hoekstalen behuizing op het vormbed om een referentievlak voor de constructie op de bodemplaat op te stellen; Stap S342: installeer ribbenplaten tussen het eerste schot, het tweede schot en het derde schot; Stap S343: hijs het eerste schot, het tweede schot, het derde schot en de ribbenplaten op de bodemplaat en las de onderkanten van het eerste schot, het tweede schot, het derde schot en de ribbenplaten aan de bodemplaat vast, waardoor de eerste deelmontage van de bovenkant van de tank wordt gevormd.The construction method for a stern of a cargo moving ship according to claim 1, characterized in that the manufacturing of the first partial assembly of the top of the tank comprises the following steps: Step S341: Mount the bottom plate horizontally on the forming bed and fix the bottom plate to the molding bed by means of an angle steel housing to establish a reference plane for the structure on the bottom plate; Step S342: Install rib plates between the first bulkhead, second bulkhead and third bulkhead; Step S343: Lift the first bulkhead, second bulkhead, third bulkhead and rib plates onto the bottom plate and weld the bottoms of the first bulkhead, second bulkhead, third bulkhead and rib plates to the bottom plate, thus completing the first part assembly of the top of the tank is formed. 6. Constructiewerkwijze voor een achtersteven van een schip voor het verplaatsen van lading volgens conclusie 1 die wordt gekenmerkt, doordat de vervaardiging van de tweede deelmontage van het breedschot de volgende stappen omvat:A construction method for a stern of a cargo moving ship according to claim 1, characterized in that the manufacture of the second part-assembly of the broadside comprises the following steps: Stap S511: monteer een veelheid van stalen platen op het vormbed en bevestig de stalen platen door middel van een hoekstalen behuizing op het vormbed, las verder de verbinding tussen de stalen platen aan elkaar om het zesde scheepsboord te vormen; Stap S512: hijs de vijfde onderlaag van het dek op het zesde scheepsboord en las de onderkant van de vijfde onderlaag van het dek aan de rand aan de achterkant van het zesde scheepsboord vast; Stap S513: las respectievelijk de zijkanten van het tweede waterdichte schot, de ribbenplaten, de balk en de negende waterdichte vloer aan de binnenkant van de vijfde onderlaag van het dek en las vervolgens de onderkanten van het tweede waterdichte schot, de ribbenplaten, de balken en de negende waterdichte vloer aan het bovenste oppervlak van het zesde scheepsboord, waardoor het eerste breedschot-onderdeel wordt gevormd, Stap S514: keer om en hijs het eerste breedschot-onderdeel op het zevende scheepsboord, las de verbinding tussen het eerste breedschot-onderdeel en het zevende scheepsboord en las het tweede breedschot-onderdeel aan de voorkant van het eerste breedschot-onderdeel, waardoor de tweede deelmontage van het breedschot wordt gevormd.Step S511: Mount a plurality of steel plates on the molding bed and fix the steel plates to the molding bed by angle steel housing, further weld the connection between the steel plates together to form the sixth shipboard; Step S512: Lift the fifth deck underlay on the sixth shipboard and weld the underside of the fifth deck underlay to the aft edge of the sixth shipboard; Step S513: Weld the sides of the second watertight bulkhead, rib plates, beam and ninth watertight floor to the inside of the fifth sub-layer of the deck respectively, and then weld the undersides of the second watertight bulkhead, rib plates, beams and the ninth watertight floor on the upper surface of the sixth side, forming the first broadside part, Step S514: Turn over and lift the first broadside part onto the seventh side, weld the joint between the first broadside part and the seventh shipboard and weld the second broadside member to the front of the first broadside member, forming the second broadside sub-assembly. 7. Constructiewerkwijze voor een achtersteven van een schip voor het verplaatsen van lading volgens conclusie 1 die wordt gekenmerkt, doordat de vervaardiging van de tweede deelmontage van het dek de volgende stappen omvat: Stap S521: monteer de zesde onderlaag van het dek horizontaal op het vormbed, en bevestig de zesde onderlaag van het dek door middel van een hoekstalen behuizing op het vormbed om een referentievlak voor de constructie op de zesde onderlaag van het dek op te stellen; Stap S522: las eerst de tiende waterdichte vloer aan de linker rand van de zesde onderlaag van het dek, hijs vervolgens het derde waterdichte schot op een kant van de zesde onderlaag van het dek, las het derde waterdichte schot aan de tiende waterdichte vloer en de zesde onderlaag van het dek;The construction method for a stern of a cargo moving ship according to claim 1, characterized in that the manufacturing of the second partial assembly of the deck comprises the following steps: Step S521: Assemble the sixth sub-layer of the deck horizontally on the forming bed , and fix the sixth deck sub-layer to the forming bed by means of an angle steel housing to establish a reference plane for the construction on the sixth deck sub-layer; Step S522: First weld the tenth watertight floor to the left edge of the sixth underlay of the deck, then hoist the third watertight bulkhead on one side of the sixth underlay of the deck, weld the third watertight bulkhead to the tenth watertight floor and the sixth bottom layer of the deck; 28.28. Stap S523: ten eerste, installeer balken op twee parallelle liggers, waardoor de balken en liggers het tweede waterdichte tankonderstel vormen, hijs vervolgens het tweede waterdichte tankonderstel op het zesde onderlaag van het dek, las het tweede waterdichte tankonderstel aan de zesde onderlaag van het dek en las één uiteinde van deliggers aan het derde waterdichte schot; Stap S524: hijs respectievelijk de elfde waterdichte vloer en het derde verbindingsframe op de zesde onderlaag van het dek, las één kant van de elfde waterdichte vloer aan het niet-verbonden uiteinde van de liggers van het tweede waterdichte tankonderstel, en las vervolgens het derde verbindingsframe aan de andere kant van de elfde waterdichte vloer; Stap S525: ten eerste, hijs de zevende onderlaag van het dek en las de zevende onderlaag van het dek aan het zesde onderlaag van het dek, waardoor een dubbeldek-constructie wordt gevormd en las vervolgens de onderkant van de twaalfde waterdichte vloer aan het zevende onderlaag van het dek vast; Stap S526: hijs de derde deelmontage van het langsschot op de achterkant van de zevende onderlaag van het dek en las de derde deelmontage van het langsschot aan de zevende onderlaag van het dek en de zesde onderlaag van het dek, waardoor de tweede deelmontage van het dek wordt gevormd.Step S523: Firstly, install beams on two parallel girders, making the beams and girders to form the second watertight tank base, then hoist the second watertight tank base to the sixth deck underlay, weld the second watertight tank base to the sixth deck undercarriage and weld one end of the girders to the third watertight bulkhead; Step S524: respectively, hoist the eleventh watertight floor and the third connecting frame onto the sixth underlay of the deck, weld one side of the eleventh watertight floor to the unconnected end of the girders of the second watertight tank base, and then weld the third connecting frame on the other side of the eleventh waterproof floor; Step S525: First, lift the seventh deck underlay and weld the seventh deck underlay to the sixth deck underlay, forming a double-deck structure, and then weld the underside of the twelfth watertight floor to the seventh underlay from the deck fixed; Step S526: Lift the third longitudinal bulkhead assembly onto the aft of the seventh deck underlay and weld the third longitudinal bulkhead assembly to the seventh deck underlay and the sixth sublayer of the deck, making the second subassembly of the deck is being formed.
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