CN114834596B

CN114834596B - Roll-on-roll-off ship and segmentation dividing method thereof

Info

Publication number: CN114834596B
Application number: CN202111557500.1A
Authority: CN
Inventors: 周亮; 胡涛; 于杰; 李国荣; 卢永勇; 李文全; 聂帮龙; 顿小辉
Original assignee: China Merchants Jinling Shipping Nanjing Co ltd; China Merchants Jinling Shipyard Jiangsu Co Ltd
Current assignee: China Merchants Jinling Shipping Nanjing Co ltd; China Merchants Jinling Shipyard Jiangsu Co Ltd
Priority date: 2021-12-19
Filing date: 2021-12-19
Publication date: 2023-06-09
Anticipated expiration: 2041-12-19
Also published as: CN114834596A

Abstract

The invention provides a roll-on-roll ship and a segmentation dividing method thereof, which are divided into 5 areas in total and first to seventh decks respectively for segmentation according to the structural form of the whole ship, wherein the 5 areas are built on a cargo hold, a cabin, a bow part, a stern part and an upper layer; the cargo compartment is divided into parallel midship bodies, the cabin area is structurally characterized in that cabins are more, ship body outer plates are linear, the sectional length is reduced as much as possible, outfitting units and structures are divided into the same section, the bow-stern area is divided into sections, the sections with special technological requirements such as ship body linear change, parts with dense structures, shafting arrangement, mounting spaces of single-double-arm side pushing outfitting parts and the like are considered, the sections are combined with the hoisting sequence of sectional assembly and ship body folding, and the upper-layer building is divided into transverse sections and should be arranged on the same ship body cross section. The invention considers various factors of sectioning the whole ship, and meets the requirements of shipyard equipment, sites, difficulty and the like of each production link, so that the construction is smoothly completed.

Description

Roll-on-roll-off ship and segmentation dividing method thereof

Technical Field

The invention belongs to the technical field of ship manufacturing, and particularly relates to a roll-on roll-off ship and a segmentation dividing method thereof.

Background

The roll-on-roll-off ship is of a left-right double long shafting structure, and the structural characteristics and cabin distribution are fully considered according to the requirements of production elements on the maximum utilization site in lean design. And thus the planning of the segmentation division is started. The impact of the segmentation technique on the shipyard is enormous. Compared with the whole ship construction method, the method has the advantages that the construction period can be greatly shortened due to reasonable segmentation, and the working conditions of workers and the construction quality of the ship are improved. From the standpoint of construction capability and convenience of construction, the length and width of a single segment and the weight of the segment are controlled, and the labor intensity and difficulty of a construction stage and a folding stage are considered. Based on the factors, a reasonable dividing method is adopted to lead the production to be orderly carried out.

Disclosure of Invention

Aiming at the technical problems, the invention provides a roll-on-roll ship and a segmentation division method thereof, which consider various factors of segmentation division of the whole ship, and meet the requirements of shipyard equipment, sites, difficulty and the like of each production link, so that the construction is successfully completed.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the roll-on/roll-off ship comprises a stern, a bow, a cabin area shell, an upper building, a first deck, a second deck, a third deck, a fourth deck, a fifth deck, a sixth deck and a seventh deck which are sequentially arranged from bottom to top, wherein the cabin area shell comprises a cabin double bottom area and a cabin side area, the cabin area shell comprises a cabin double bottom area, a cabin side area and a cabin side cabin area, the cabin area is arranged right in front of the stern and is arranged right in front of the stern, the cabin double bottom area is arranged right in front of the cabin double bottom area, the cabin side area shell is arranged right in front of the stern and the cabin area shell, the cabin side area shell is arranged right in front of the cabin double bottom area, and the bow is arranged right in front of the side cabin area and the cabin double bottom area and is arranged right in front of the cabin side cabin area and the cabin double bottom area; the superstructure is arranged on a seventh deck; the first deck to the seventh deck are sequentially arranged on the ship shell from bottom to top.

Further, the roll-on-roll ship comprises FR 11-FR 306 rib positions from the stern to the bow of the ship, and the first deck is positioned between FR48 and FR273 rib positions; the second deck is located between FR30 and FR75 rib positions; the third deck is positioned between the FR5 and FR306 rib positions; the fourth deck is positioned between the FR5 and FR305 rib positions, the fifth deck is divided into two sections, one section is arranged in a side area of the cargo hold and positioned between the FR5 and FR15 rib positions, the other section is arranged in a bow area and positioned between the FR285 and FR304 rib positions; the stern comprises a rear stern area between the FR5 and FR28 rib positions and a front stern area between the FR28 and FR50, wherein the front stern area comprises a second deck between the FR30 and FR50 and a third deck between the FR5 and FR50 rib positions; the cabin is arranged at the front part of the stern, is arranged close to the stern and is positioned between the FR48 and the FR108 rib positions, and comprises a cabin double bottom layer and a cabin side board, wherein the cabin double bottom layer comprises a part of first deck board, and the cabin side board comprises a part of second deck board and a part of third deck board; a cabin ramp is arranged between the second deck and part of the third deck, a host is arranged on two sides of the cabin ramp on the second deck, and fixed ramps are arranged on two sides above the cabin ramp on the third deck;

The bow is positioned right in front of the cargo hold, and comprises a part of a first deck, a second deck, a third deck, a fourth deck, a fifth deck, a sixth deck and a seventh deck, wherein the part below the third deck is positioned between FR272 and FR306, and the part above the third deck is positioned between FR285 and FR 306; the cargo compartment double bottom layer is positioned between the FR110 and the FR272, and comprises a part of a first deck; the cargo hold side area is positioned right above the stern and the cabin side and between FR5 and FR110, the cargo hold side inner area comprises a fourth deck, a fifth deck, a sixth deck and a seventh deck, first fixing ramps are respectively arranged on two sides between the third deck and the fourth deck, and the first fixing ramps are positioned between FR180 and FR 249; the cargo hold side cabin area comprises a third deck, a fourth deck, a sixth deck and a seventh deck, wherein the cargo hold side cabin of the third deck and below is positioned between FR108 and FR273, the cargo hold side cabin of the third deck is positioned between FR108 and FR285, a movable ramp is arranged on the left side between the fourth deck and the sixth deck, a second fixed ramp is arranged on the right side, and a third fixed ramp is arranged on the left side between the sixth deck and the seventh deck; the superstructure is located between FR57 and FR161 rib locations.

Further, the superstructure is provided with an A deck, a B deck and a C deck from bottom to top, wherein the A deck is positioned between FR57 and FR160 rib positions, the B deck is positioned between FR75 and FR160 rib positions, the C deck is positioned between FR123 and FR158 rib positions, one end, close to the stern, of the B deck is provided with a chimney section positioned between FR65 and FR84 rib positions, the C deck is provided with a cab section, and the cab section is positioned between the C deck and a magnetic compass deck area; the first fixed ramp, the second fixed ramp and the third fixed ramp comprise an upper ramp plate, a lower ramp plate, an inner partition plate and ramp longitudinal walls, the upper ramp plate and the lower ramp plate are connected end to form a ramp, the ramp longitudinal walls are fixedly connected with two sides of the ramp, and the inner partition plate is arranged below the ramp.

The sectional division method of the roll-on-roll-off ship comprises the following steps:

s1, dividing a bow section: dividing a first measurement pushing cabin positioned at the bow into a section; dividing an anchor pocket in a bow below a structural waterline into a segment;

s2, segmentation and division of a stern: the rudder is tied into one section in the length direction of the ship; the single-arm and double-arm frames are divided into a section; the tail shaft structure is divided into a section and 9 sections;

S3, dividing the cabin into two bottom layers in a segmented mode: in the length direction of the ship, the ship is divided into 3-4 sections, wherein a main engine base positioned in a double bottom layer of the engine room is positioned in one section;

s4, cabin broadside area segmentation: dividing the ship into 3-4 sections in the length direction of the ship, and dividing the ship in the height direction of the ship by taking the height of a deck as a unit;

s5, dividing the double bottom layer areas of the cargo hold in sections: dividing the middle area with the compartment into middle compartment sections, and dividing the broadsides on two sides of the middle compartment sections into left and right sections respectively;

s6, dividing the side area of the cargo hold in a segmented mode: dividing the first deck, the second deck, the third deck and the fourth deck;

s7, dividing the side cabin area of the cargo hold in sections: in the ship height direction, the ship is divided into an upper section and a lower section by taking a fourth deck as a boundary.

Further, the step S1 is specifically that the stern area of the rear section is divided into two sections in the length direction of the ship, and the two sections are divided into a stern port section, a stern middle section and a stern starboard section in the width direction of the ship; the second deck plate positioned in the front section stern area and the front section stern section are divided as a whole synchronously, and the third deck plate positioned in the front section stern area and the third deck plate positioned in the section stern area are divided together with the front section stern area and the rear section stern area as a whole respectively; in the step S2, a third deck, a second deck, a first deck and a bow shell below the third deck in the bow are divided into a first bow middle section, a second bow middle section and a third bow middle section as a whole in synchronization in the length direction of the ship, and the three sections are not divided in the width direction of the ship; dividing a fourth deck and a bow shell between the third deck and the fourth deck together as a whole in the width direction of the ship into a bow port side section and a bow starboard side section; dividing a fifth deck and a bow shell between the fifth deck and the fourth deck as a whole into a bow port side section and a bow starboard side section in the width direction of the ship; dividing a sixth deck and a bow shell between the sixth deck and the fifth deck as a whole into a bow port side section and a bow starboard side section in the width direction of the ship; the seventh deck and the bow casing between the seventh deck and the sixth deck are divided together in the ship width direction as a whole into a bow port side section and a bow starboard side section.

Further, in the step S3, specifically, in the ship length direction, the cabin double-bottom layer area and a part of the first layer deck in the cabin double-bottom layer area are divided into a first cabin double-bottom layer section, a second cabin double-bottom layer wind section, a third cabin double-bottom layer section and a fourth cabin double-bottom layer section as a whole, and in the ship width direction, the first cabin double-bottom layer section, the second cabin double-bottom layer section, the third cabin double-bottom layer section and the fourth cabin double-bottom layer section are divided into a cabin double-bottom layer port section and a cabin double-bottom layer starboard section;

further, in the step S4, in the ship length direction, the cabin side shell and the second deck and the third deck in the area are divided into four segments; in the ship height direction, a first section to a third section from a stern to a bow direction are divided into an upper section and a lower section, in the ship width direction, a cabin side shell in the lower section and a port side part of a second deck connected with the cabin side shell are respectively and jointly divided into a port side part and a port side part of a cabin side as a whole, a second deck middle part in the section is divided into a second deck middle section, the cabin side shell in the second section and the second deck are divided into a cabin port side section and a cabin port side section by taking a cabin ramp as a boundary, the cabin side shell in the third section and the port side part connected with the second deck are respectively and jointly divided into a cabin port side section and a cabin port side section as a whole, the middle part of the second deck is divided into a second deck port side section and a second deck port side section in the ship width direction, and the cabin side shell in the fourth section and the second deck are divided into a cabin port side section and a cabin side section in the ship width direction; the host hanging ports positioned at two sides of the cabin ramp respectively divide a first host hanging port section and a second host hanging port section; the cabin side shell and the third deck in the upper section of the first section are divided into a cabin port side section and a cabin starboard side section by taking a cabin ramp as a boundary, the cabin side shell and the port side part of the third deck connected with the cabin side shell in the upper section of the second section are respectively divided into a port side section and a starboard side section as a whole, the middle part of the third deck is divided into a third deck middle section, and the middle part of the third deck is divided into a third deck port side section and a third deck starboard side section in the ship width direction; a cabin side shell in an upper section of the third section and a third deck connected with the cabin side shell are divided into a port side section and a starboard side section by taking a cabin ramp as a boundary; the cabin side shell and the third deck in the upper section of the fourth section are divided into a port side section and a starboard side section by the cabin ramp; the cabin ramp is divided into four segments in the ship length direction, which are each divided into cabin ramp starboard side segments in the ship width direction.

Further, the step S5 specifically includes a two-bottom-layer area segmentation division mode of the cargo compartment: in the length direction of the ship, the shell of the cargo hold double-bottom-layer area and a first deck in the shell are sequentially divided into ten sections, in the width direction of the ship, the first six sections of the cargo hold double-bottom-layer area shell are divided into a cargo hold double-bottom-layer port side section and a cargo hold double-bottom-layer starboard side section along the stern to the bow direction, the port side parts of the first six sections of the deck are respectively and jointly divided into a cargo hold double-bottom-layer middle section as a whole together with the first six sections of the cargo hold double-bottom-layer area shell, and the middle parts of the six sections are respectively and independently divided into cargo hold double-bottom-layer middle sections; the seventh and eighth sections of the cargo hold double bottom area enclosure and the seventh and eighth sections of the first deck are respectively and jointly divided as a whole into a cargo hold double bottom port side section and a cargo hold double bottom starboard side section, and the ninth and tenth sections of the cargo hold double bottom area enclosure and the ninth and tenth sections of the first deck are respectively not divided as a whole;

the step S6 specifically includes dividing the side area of the cargo compartment in segments: between the FR5 and FR285 rib positions, in the ship height direction, the cargo hold side area shell is divided into four sections from bottom to top by taking each deck as a boundary, and the four sections are divided into a port side section and a starboard side section in the ship width direction; the port side section and the starboard side section between the sixth deck and the seventh deck and the port side section and the starboard side section of the seventh deck are divided together as a whole into three sections in the ship length direction, and the seventh deck of the middle section is divided into a seventh deck port side section and a seventh deck starboard side section in the ship width direction with the ship center line as a boundary; between the FR5 and FR15 rib positions, the port side section and the starboard side section between the fifth layer deck and the sixth layer deck are divided into two sections in the ship length direction together with the port side portion of the sixth layer deck in the section as a whole, the port side section and the starboard side section between the fourth layer deck and the fifth layer deck are divided into two sections in the ship length direction together with the port side portion of the fourth layer deck and the starboard side section between the FR15 and the FR43 rib positions as a whole, the port side section and the starboard side portion of the sixth layer deck in the section are divided into two sections in the ship length direction together as a whole, the middle portion of the sixth layer deck between the FR43 and the FR108 rib positions is divided into three sixth layer deck middle sections in the ship length direction, the port side section and the starboard side section between the third layer deck and the fourth layer deck are divided into three sections together with the port side portion of the fourth layer deck in the section in the ship length direction respectively, and the fourth layer deck is divided into three sections in the same width portion in the ship length direction as the fourth layer deck in the third layer section; between FR108 and FR285 rib levels, the cargo hold side hull in this section is divided into upper and lower two sections with a fourth deck as a boundary in the ship height direction, the cargo hold side hull in the upper and lower two sections and the fourth to seventh decks are each divided into four sections in the ship length direction, the divided cargo hold side hull sections are divided together as a whole with the port and starboard side portions of the connected fourth to seventh decks in the ship width direction into port and starboard side sections, respectively, in the ship width direction, the seventh and sixth deck middle sections in this section are each divided again into port and starboard side sections, and the first three fourth deck middle sections divided in the length direction are not divided any more, and the fourth middle section divides the port and starboard side portions in the ship width direction.

Further, the step S7 specifically includes the step of dividing the side cabin area of the cargo hold in segments: in the length direction of the ship, the third deck and the cargo hold side cabin shell below the third deck are divided into nine sections at the same position, and the cargo hold side cabin shell above the third deck and the fourth deck, the sixth deck and the seventh deck in the cargo hold side cabin shell above the third deck are divided into ten sections at the same position, and are divided into an upper section and a lower section in the height direction of the ship; counting from the stern in sequence from the direction of the ship bow, dividing the cargo hold side tank shell and the first to fifth segmented port-starboard side parts of the third deck, the fourth deck, the sixth deck and the seventh deck connected with the cargo hold side tank shell into a cargo hold side tank port-starboard side part and a cargo hold side tank starboard side part respectively as a whole together, and dividing the third deck middle part, the fourth deck middle part and the sixth deck middle part in the section into respective port-starboard side parts and starboard side parts again in the ship width direction, and dividing the seventh deck middle part into a port-starboard side part, a middle part and a starboard side part in the ship width direction; dividing the sixth to ninth sections into a middle section and a lower section again by taking a third deck as a boundary along the direction from the stern, dividing the cargo hold side cabin shell of the sixth to eighth sections and the port side part of the third deck connected with the cargo hold side cabin shell of the sixth to eighth sections in the lower section into a port side part and a starboard side part as a whole, dividing the middle part of the third deck into the third deck port side section and the third deck starboard side section in the ship width direction, and dividing the cargo hold side cabin shell of the ninth section in the lower section and the third deck connected with the cargo hold side cabin shell of the ninth section into the port side part and the starboard side part as a whole; the cargo hold side tank shell of the ninth section in the middle section and the port-and-starboard side part of the fourth deck connected thereto are commonly divided into a port side part and a starboard side part as a whole, the middle part of the fourth deck is divided into a fourth deck port side section and a fourth deck starboard side section in the ship width direction, the cargo hold side tank shell of the ninth section in the middle section and the port-and-starboard side part of the fourth deck connected thereto are commonly divided into a port side part and a starboard side part as a whole, the middle part of the fourth deck is not divided any more, and the cargo hold side tank shell of the tenth section in the middle section and the fourth deck connected thereto are commonly divided into a port side part and a starboard side part as a whole; the cargo hold side tank shell in the upper section and the sixth deck, the port side section of the seventh deck and the port side section of the seventh deck connected thereto are divided together in the ship width direction as a whole into a port side section and a port side section, the middle parts of the sixth to eighth sections of the sixth deck are divided in the ship width direction into a sixth deck port side section, a sixth deck middle section and a sixth deck port side section, the middle parts of the ninth to tenth sections of the sixth deck are divided in the ship width direction into a sixth deck port side section and a sixth deck port side section, the sixth sections of the seventh deck, the seventh sections and the middle parts of the tenth sections are divided in the ship width direction into a seventh deck port side section, a seventh deck middle section and a seventh deck port side section, and a seventh deck port side section.

Further, the segmentation method further includes: s8, sectional division forms of the superstructure: dividing the deck A and the part between the deck A and the deck seventh into five sections along the direction from the stern part to the bow part in sequence, dividing the part between the deck A and the deck seventh and the two sides of the deck A into an upper building port side section and an upper building starboard side section along the width direction of the ship, and dividing the middle part of the deck A into an upper building B layer deck port side section and an upper building B layer deck starboard side section; dividing the deck B and the part between the deck B and the deck A into five sections in turn along the direction from the bow part to the stern part, wherein the fourth section and the fifth section are divided into a port side section of the deck B of the upper layer building, a starboard side section of the deck B of the upper layer building and a middle section of the deck B of the upper layer building in the width direction of the ship, the third section and the second section are not divided any more in the width direction of the ship, and the first section is divided into the port side section of the deck B of the upper layer building and the starboard side section of the deck B of the upper layer building in the width direction of the ship; dividing the C deck and a part between the C deck and the B deck into two sections in turn along the direction from the stern to the bow, wherein the first section is not divided in the width direction of the ship, and the second section is divided into a port side section of the C deck of the upper building and a starboard side section of the C deck of the upper building in the width direction of the ship; dividing the whole cab above the C deck into a section; dividing a chimney positioned at one end of the B deck close to the stern into a section;

S9, dividing the ramp segments: in the length direction of the ship, the longitudinal wall of the starboard side first fixed ramp between the third deck and the fourth deck is divided into two sections, and the whole starboard side first fixed ramp is divided into three sections; the ramp longitudinal wall of the port side first fixed ramp positioned between the third deck and the fourth deck is divided into four sections, and the port side first fixed ramp is wholly divided into five sections; in the ship length direction, the longitudinal wall of the moving ramp of the port side section between the fourth deck and the sixth deck is divided into four ramp sections; a second fixed ramp, a longitudinal wall of the ramp and a ramp of the starboard side section between the fourth deck and the sixth deck are divided into three ramp sections; in the ship length direction, the ramp longitudinal wall and the ramp of the third fixed ramp of the port side section between the sixth deck and the seventh deck integrally divide the two sections.

The double-layer bottom subsection structure of the cargo hold is formed by dividing a middle section with a fuel tank, a ballast tank below, side ballast tanks on two sides into a left section, a middle section, a right section and a whole section, wherein the middle section with a compartment is divided into a left section and a right section, and the left side and the right side sections are divided into a left section and a right section.

The cargo hold side tanks are longitudinal frameworks, the outer plate seams are longitudinally arranged and comprise 4 layers of decks in total, namely 3, 4, 6 and 7 layers, the cargo hold side tank area is divided into an upper side tank section and a lower side tank section by taking the 4 layers of decks as boundaries, the upper side tank section and the lower side tank section are respectively provided with 2 layers of decks, and the width of each deck is 2.4 meters, so that the side tank sections can be flattened by dividing, and the plane field is fully utilized. The structure is beneficial to sectionally controlling the deformation and is convenient for large-scale use of an automatic welding machine, thereby effectively reducing the construction difficulty and controlling the deformation.

The ro-ro ship is provided with 7 decks, all the above 3 decks are cargo carrying areas, and two sides of the tail part of the 3-4 decks are respectively provided with a fixed ramp; 4-6, a movable ramp is arranged at the left headquarter of the deck, and a fixed ramp is arranged at the right side of the deck; a fixed ramp is arranged on the left side of the 6-7 deck; the dividing principle of the deck sections comprises three deck sections of left, middle and right, and the bow, stern and cabin area is divided into two deck sections of left and right according to cabin arrangement; the row board benefit of deck is maximized based on the width of deck segmentation, and the row board of deck makes maximum use of board width, reduces makeup board seam, especially reduces the makeup segmentation as far as possible to reduce the CO2 welding seam of external field, simultaneously the deck row board can not exceed the requirement that the specification restriction of internal field makeup can not be exceeded 14 x 14 meters, and the deck segmentation of dividing like this can realize that the deck is pieced together into the monoblock in the internal field, reduces external field CO2 welding, has positive significance to improvement efficiency, control deck deformation.

The ramp is connected with the upper deck and the lower deck, the fixed ramp consists of an upper ramp plate, a lower ramp plate, an inner grid plate and a ramp longitudinal wall, and as the ramp is in transition from high to low, the height positioning is difficult to control, the lower space is smaller and the construction can not be performed, and finally, the lower opening ramp plate can only be subjected to single-sided pad welding or plug welding. The ramp plate of the fixed ramp is wide in opening and needs to be supported for folding, so that the ramp longitudinal wall is required to be brought in by the fixed ramp section division, the ramp is divided into the next deck by the single-sided welding structure at the bottom of the ramp, and the fixed ramp is installed on the sections, so that the large folding workload is reduced.

The roll-on-roll-off ship is of a long-axis system structure, the double-layer bottom of the cabin is wider than other ships, and cabins and pipe systems are relatively more, so that the height of the double-layer bottom section of the cabin is about 500mm above the deck plate platform, and the pipe system units can be installed in the double-layer bottom section of the cabin; in the selection of the length direction, the line type of the bottom layer of the engine room of the roll-on roll-off ship is changed, and the line type is too greatly changed due to the overlong sectional length, so that the length of the double-layer bottom of the engine room is divided into 3-4 sections by taking about 12 meters as one section, and the main engine base is favorable for controlling the installation precision of the main engine base in one complete section.

The length of the cabin side cabin section is about 12 meters as one section, the cabin side cabin section is divided into 3-4 sections, and the height of a deck layer in the height direction is one section; in order to improve outfitting perfection rate, the engine room can be folded in large and medium areas, and on the premise of meeting crane requirements, the engine room can be folded in segments as much as possible.

Because the roll-on-roll ship is double-rudder double-shaft slurry, the roll-on-roll ship is divided into a left section, a middle section and a right section in the width direction, and the rudder is tied into one section in the length direction; because the single-arm and double-arm frames have the axial line alignment requirement, the single-arm and double-arm frames are divided into a section on the premise that the weight meets the construction requirement; the tail shaft is structured into one segment, and under the principle, the tail shaft is divided into 9 segments below a deck 3; the cargo area above the third deck is divided according to the height of each deck, and then the outer deck is compartmentalized into side compartment segments according to the principle of segmentation similarity according to the characteristics of cabins on the side, and the decks are independently taken as the deck segments, which is equivalent to making the tail segments into the decks and the side compartment segments.

According to the structural characteristics of the ro-ro ship, the shipyard building capacity is combined, and influences of major iron outfitting, electric outfitting, piping and the like, building difficulty, folding difficulty, coating operation, jumping and the like are considered, so that the whole ship is reasonably divided into a plurality of sections to finish the operations of building, folding and the like, and finally the whole ship is built. The division of the segments should be adapted to the construction of the vessel, and to meet the requirements of being constructable, easy to construct and efficient to construct, there are various limitations and requirements for the hull segments, such as strength and rigidity requirements of the segmented structure, requirements for improving the working conditions, requirements for satisfying the limitation of the lifting and transporting capacity of the shipyard, etc. These requirements are usually put forward in the form of the division principle, and especially in the conventional shipbuilding mode, the division study is a study of the division principle. Therefore, determining a reasonable segmentation principle becomes an important part of the research of the ship segmentation method.

The invention is divided into 5 areas and a plurality of segments according to the structural form of the whole ship, wherein the 5 areas are built on the upper layer of the whole ship, the cabin, the bow part, the stern part and the stern part.

The cargo hold sections are divided into regularity and similarity as much as possible, parallel midship bodies as much as possible, the length is made large by using a straight section assembly line, the butt joint of the sections is reduced, and the section joint is selected at the connecting part of the original plate joint or node part (such as a toggle plate) of the structure as much as possible. The optimal design is adopted as much as possible to match the length of the segments with the distribution area required by the structural strength, so as to achieve the aim of reducing the steel plate joint. Thereby facilitating a reduction in the flat cargo compartment segment construction period. The difficulty of construction is reduced or simplified, 1-2 annular sections of the cargo hold can be effectively reduced, the welding amount and labor cost of jointed boards, prefabrication, assembly and the like are reduced, and the cost is saved by 1%; the division of the side area of the cargo hold mainly considers the similarity of sectional construction, is convenient for workshop task arrangement and construction convenience, reduces construction difficulty, can be beneficial to the perfection of the cargo hold below 4 decks in folding, reduces the jumping amount of the cargo hold, and improves work efficiency.

The cabin area has the structural characteristics that the cabin is more, the hull outer plate has a linear shape, the segment length is reduced as much as possible, in addition, the assembly property and the welding convenience of the structure are considered, the beneficial conditions are created for pre-outfitting and coating operation, outfitting units and the structure are marked in the same segment, pipe accessory joints at joints are reduced, the segments have the condition of independently performing tightness test, the integrity of closed cabin coating is ensured, the damage of welding seams to cabin coating is reduced, the segments of the cabin area are divided according to the assembly as much as possible, and the tire loading rate of the curved surface of the hull outer plate is improved. For special positions such as the tail ends of stringers of a main frame and a cabin seawater tank, the arrangement of sectional joints is avoided, welding in a cabin during folding is avoided as much as possible, folding operation time is shortened, jump in a limited space is reduced, operation environment and efficiency are improved, the effective division of cabin sections can greatly improve the tire loading rate of a curved surface by 80%, the number of assemblies is increased by 30%, and efficiency is saved by 10%.

The method has the advantages that the parts with special process requirements such as linear change, dense structure, shafting arrangement, single-double-arm, side pushing and outfitting installation space and the like of the ship body are considered during the segmentation of the bow-stern area, and the segmentation is carried out by combining the segmentation assembly and the hoisting sequence of the ship body closure, so that the method is beneficial to the planar segmentation synthesis of three-dimensional, semi-three-dimensional segments or total segments, can effectively reduce the segment construction difficulty and improve the neutralization quantity.

When the maximum utilization rate principle of the production resources of shipyards is utilized, the sectional regularity and the height requirement are considered when the upper building is segmented, and the upper building is segmented in a transverse division mode due to weaker structure, insufficient rigidity and larger length of the upper building, and transverse joints of all layers of the upper building are considered, so that the middle folding quantity can be effectively improved and the folding efficiency is improved by 30 percent on the same cross section of the ship body. The flat plate is divided into flat sections, so that the platform plate can be better put into a plane section assembly line, the manufacturing speed of the plane section can be greatly increased, and the tire occupying time and the transfer rate of the section are increased by 20%.

The invention considers various factors of sectioning the whole ship, and meets the requirements of shipyard equipment, sites, difficulty and the like of each production link, so that the construction is smoothly completed.

Drawings

FIG. 1 is a front view of a roll-on/roll-off vessel hull section division according to the present invention;

FIG. 2 is a top plan view of a first deck section of the roll-on/roll-off vessel according to the present invention;

FIG. 3 is a segmented top view of a second deck of the roll-on/roll-off vessel according to the present invention;

FIG. 4 is a top plan view of a third deck section of the roll-on/roll-off vessel according to the present invention;

FIG. 5 is a top plan view of a fourth deck section of the roll-on/roll-off vessel of the present invention;

FIG. 6 is a top plan view of a fifth deck section of the roll-on roll-off vessel of the present invention;

FIG. 7 is a segmented top view of a sixth deck of the roll-on/roll-off vessel according to the present invention;

FIG. 8 is a top plan view of a seventh deck section of the roll-on roll-off vessel of the present invention;

FIG. 9 is a sectional view of the roll-on-roll-off ship FR12 rib section according to the invention;

FIG. 10 is a sectional view of a roll-on-roll-off ship FR42 rib position segment division according to the invention;

FIG. 11 is a sectional view of a roll-on-roll ship FR90 rib section according to the present invention;

FIG. 12 is a sectional view of a roll-on-roll-off ship FR150 rib section according to the present invention;

FIG. 13 is a top plan view of a B deck subsection of a roll-on-roll-off ship according to the present invention;

FIG. 14 is a top plan view of a C deck section of a roll-on-roll-off ship according to the present invention;

FIG. 15 is a segmented top view of the superstructure magnetic compass deck of the roll-on-roll-off ship according to the present invention;

FIG. 16 is a sectioned top view of a starboard side first fixed ramp according to the present invention;

FIG. 17 is a top plan view of a port side first fixed ramp section according to the present invention;

FIG. 18 is a segmented top view of a second fixed ramp according to the present invention;

FIG. 19 is a segmented top view of a third fixed ramp according to the present invention;

fig. 20 is a segmented top view of a movable ramp according to the present invention.

Wherein 1-bow, 2-stern, 3-cabin double bottom area, 4-cabin side area, 5-superstructure, 6-cargo hold double bottom area, 7-cargo hold side area, 8-cargo hold side area, 9-first deck, 10-second deck, 11-third deck, 12-fourth deck, 13-fifth deck, 14-sixth deck, 15-seventh deck, 16-first fixed ramp, 17-second fixed ramp, 18-third fixed ramp, 19-movable ramp, 22-A deck, 23-B deck, 24-C deck, 25-cabin ramp, 26-first mainframe port section, 27-second mainframe port section, 28-chimney section, 29-cab section, 81-cargo hold port section, 82-cargo hold port side section, 121-fourth deck port side section, 122-fourth deck port side section, 123-fourth deck mid-section, 141-sixth deck port side section, 142-sixth deck port side section, 143-sixth deck mid-section, 151-seventh deck port side section, 152-seventh deck port side section, 161-cargo hold ramp port side section, 162-cargo hold ramp port side section, 201-stern port side section, 202-stern port side section, 203-stern mid-section, 41-cabin port side section, 42-cabin port side section, 51-superstructure port side section, 52-superstructure port side section, 221-superstructure A deck port side section, 222-superstructure A deck port side section, 231-superstructure B deck port side section, 232-superstructure B deck port side section, 241-superstructure C deck port side section, 242-superstructure C deck port side section, 101-second deck port side section, 102-second deck port side section, 111-third deck port side section, 112-third deck port side section, 31-cabin double bottom port side section, 32-cabin double bottom port side section, 271-cabin ramp port side section, 61-cabin double bottom port side section, 62-cabin double bottom port side section, 63-cabin double bottom middle section, 71-cabin side port side section, 72-cabin side port side section, 191-ramp section.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific examples.

The construction site of the factory is set according to the width of 14 meters, and the maximum load ton of the transport segmented flat car is 200 tons. The sectional weight is controlled to be about 160 tons by combining the equipment capacity of the factory and the plate purchasing requirement, the sectional length is as long as possible, and the sectional length is generally 12-14 meters.

Where HL in the segment numbers in fig. 1-20 represents the ramp longitudinal wall segments, HD and CD represent the deck segments, RA represents the ramp segments, and ED represents the nacelle segments.

As shown in fig. 1, a roll-on/roll-off ship comprises a stern part 2, a bow part 1, a cabin area shell, a cargo area shell, an upper building 5, a first deck 9, a second deck 10, a third deck 11, a fourth deck 12, a fifth deck 13, a sixth deck 14 and a seventh deck 15 which are arranged in sequence from bottom to top, wherein the cabin area shell comprises a cabin double bottom area 3 and a cabin side area 4, the cabin area shell comprises a cargo area double bottom area 6, a cargo area side area 8 and a cargo area side area 7, the cabin area is arranged right in front of the stern part 2, the cargo area double bottom area 6 is arranged right in front of the cabin double bottom area 3, the cargo area side area 8 is arranged right in front of the stern part 2 and the cabin area, the cargo area side area 7 is arranged right in front of the cargo area side area 7 and the double bottom area 6, and the cargo area side area 1 is arranged right in front of the cargo area side area 7 and the cargo area double bottom area 6; the superstructure 5 is arranged on a seventh deck 15; the first deck 9 to the seventh deck 15 are sequentially arranged on the ship shell from bottom to top.

The ro-ro ship comprises FR 11-FR 306 rib positions from the ship stern 2 to the ship bow 1, and the first deck 9 is positioned between FR48 and FR273 rib positions; the second deck 10 is located between FR30 and FR75 rib positions; the third deck 11 is located between FR-5 and FR306 rib locations; the fourth deck 12 is located between the FR-5 and FR305 rib positions, the fifth deck 13 is divided into two sections, one section is arranged in the side area 8 of the cargo hold and located between the FR-5 and FR15 rib positions, the other section is arranged in the area of the bow 1 and located between the FR285 and FR304 rib positions; the sixth deck 14 is located between FR-5 and FR302 rib locations; the seventh deck 15 is located between FR-5 and FR297 rib levels; the stern 2 comprises a rear stern area between the FR5 and FR28 rib positions and a front stern area between the FR28 and FR50, wherein the front stern area comprises a second deck 10 between the FR30 and FR50 and a third deck 11 between the FR5 and FR50 rib positions; the cabin is positioned at the front part of the stern 2, is arranged close to the stern 2 and is positioned between the FR48 and FR108 rib positions, the cabin double bottom layer area 6 comprises a part of a first layer deck 9, and the cabin broadside area 4 comprises a part of a second layer deck 10 and a part of a third layer deck 11; a cabin ramp 25 is arranged between the second deck 10 and part of the third deck 11, on the second deck 10, first main machine hanging port sections 26 are arranged on two sides of the cabin ramp 25, and on the third deck 11, second main machine hanging port sections 27 are arranged on two sides of the cabin ramp 25;

The bow part 1 is positioned right in front of the cargo compartment, and the bow part 1 comprises a part of a first deck 9, a second deck 10, a third deck 11, a fourth deck 12, a fifth deck 13, a sixth deck 14 and a seventh deck 15, wherein the part below the third deck 11 is positioned between FR207 and FR306, and the part above the third deck 11 is positioned between FR285 and FR 306; the cargo compartment double bottom layer area 6 is located between FR110 and FR272, and the cargo compartment double bottom layer area 6 contains a part of the first deck 9; the cargo hold side area 8 is located right above the stern 2 and the cabin side area 4, and is located between FR5 and FR57, the cargo hold side inner area 8 comprises a fourth deck 12, a fifth deck 13, a sixth deck 14 and a seventh deck 15, a port side first fixed ramp 16 and a starboard side first fixed ramp 20 are respectively arranged at two sides between the third deck 11 and the fourth deck 12, the first fixed ramp 16 is located between FR32 and FR100, a main engine hanging port 30 is arranged at the front sides of the two first fixed ramps, and two deck sections 31 are symmetrically arranged at the tail end of the third deck; the cargo hold side cabin area 7 comprises a third deck 11, a fourth deck 12, a sixth deck 14 and a seventh deck 15, the cargo hold side cabin area 7 of the third deck 11 and below is positioned between FR108 and FR273, the cargo hold side cabin area 11 of the third deck 11 above is positioned between FR108 and FR285, a movable ramp 19 is arranged on the left side between the fourth deck 12 and the sixth deck 14, a second fixed ramp 17 is arranged on the right side, and a third fixed ramp 18 is arranged on the left side between the sixth deck 14 and the seventh deck 15; the superstructure 5 is located between FR57 and FR160 rib positions;

The superstructure 5 is provided with an A deck 22, a B deck 23 and a C deck 24 from bottom to top, wherein the A deck 22 is positioned between FR57 and FR160 rib positions, the B deck 23 is positioned between FR75 and FR160 rib positions, the C deck 24 is positioned between FR123 and FR158 rib positions, one end, close to the stern 2, of the B deck 23 is provided with a chimney section 28, positioned between FR65 and FR84 rib positions, the C deck is provided with a cab section 29, and the cab section 29 is positioned between the C deck and a magnetic compass deck area.

The middle of the cargo hold double-bottom-layer area 6 is provided with a fuel tank, both sides of the fuel tank are provided with side ballast tanks, lower ballast tanks are arranged below the fuel tank and the side ballast tanks, the cargo hold side tank area 6 is of a longitudinal skeleton structure, and outer plate seams are longitudinally arranged.

The first fixed ramp 16, the second fixed ramp 17 and the third fixed ramp 18 each comprise an upper ramp plate, a lower ramp plate, an inner grid plate and ramp longitudinal walls, the upper ramp plate and the lower ramp plate are connected end to form a ramp, the ramp longitudinal walls are fixedly connected with two sides of the ramp, and the inner partition plate is arranged below the ramp.

As shown in fig. 2 to 20, the method for dividing the ro-ro ship in segments comprises the following steps:

s1, a stern area segmentation dividing form: the rear stern area is divided into two sections in the ship length direction, and the two sections are divided into a stern port section 201, a stern middle section 203 and a stern starboard section 202 in the ship width direction; the second deck 10 positioned in the front section stern area and the front section stern section are divided as a whole synchronously, and the third deck 11 positioned in the front section stern area and the third deck 11 positioned in the section stern area are respectively divided together with the front section stern section and the rear section stern area as a whole;

S2, dividing the bow section into sections: in the length direction of the ship, a third deck 11, a second deck 10, a first deck 9 and a bow 1 shell below the third deck 11 in the bow are synchronously divided into a first bow middle section, a second bow middle section and a third bow middle section as a whole, and the three sections are not divided in the width direction of the ship; dividing the fourth deck 12 and a bow casing between the third deck 11 and the fourth deck 12 as a whole into a bow port side section and a bow starboard side section in the ship width direction; dividing the fifth deck 13 and a bow casing between the fifth deck 13 and the fourth deck 12 as a whole jointly in the ship width direction into a bow port side section and a bow starboard side section; dividing the sixth deck 14 and a bow casing between the sixth deck 14 and the fifth deck 13 as a whole jointly in the ship width direction into a bow port side section and a bow starboard side section; dividing the seventh deck 15 and a bow casing located between the seventh deck 15 and the sixth deck 14 as a whole jointly in the ship width direction into a bow port side section and a bow starboard side section;

S3, dividing the cabin double-bottom-layer region 6 in a segmented mode: in the ship length direction, the cabin double-bottom-layer area 6 and part of the first deck in the cabin double-bottom-layer area are sequentially divided into a first cabin double-bottom-layer section, a second cabin double-bottom-layer wind section, a third cabin double-bottom-layer section and a fourth cabin double-bottom-layer section as a whole, and in the ship width direction, the first cabin double-bottom-layer section, the second cabin double-bottom-layer section, the third cabin double-bottom-layer section and the fourth cabin double-bottom-layer section are respectively divided into a cabin double-bottom-layer port section 31 and a cabin double-bottom-layer starboard section 32;

s4, dividing the cabin broadside area 4 into segments: dividing the cabin side shell and the second deck 10 and the third deck 11 in this area into four segments in the ship length direction; in the ship height direction, the first to third sections from the stern to the bow direction are divided into upper and lower sections, in the ship width direction, the cabin side shell in the lower section and the port side portion of the second deck 10 connected thereto are divided together as a whole into a cabin side port side portion and a port side portion, respectively, the second deck middle portion in the sections is divided into a second deck middle section, the cabin side shell in the second section and the second deck 10 are divided into a cabin port side section 41 and a cabin port side section 42 with the cabin ramp as a boundary, the cabin side shell in the third section and the port side portion of the second deck connected thereto are divided together as a whole into a cabin port side section 41 and a cabin port side section 42 with the cabin ramp as a boundary, respectively, the middle portion of the second deck is divided into a second deck port side section 101 and a second deck port side section 102 with the cabin ramp as a boundary, and the cabin side section in the fourth section is divided into a cabin port side section 41 and a cabin port side section 42 with the cabin ramp as a boundary; the host hanging openings at two sides of the cabin ramp 25 are respectively divided into a first host hanging opening section 26 and a second host hanging opening section 27; the cabin side shell in the upper section of the first section and the third deck 11 are divided into a cabin port side section 41 and a cabin starboard side section 42 with the cabin ramp as a boundary, the port side part of the cabin side shell in the upper section of the second section and the port side part of the third deck connected thereto are divided into a port side section and a starboard side section as a whole, the middle part of the third deck is divided into a third deck middle section, and the middle part of the third deck is divided into a third deck port side section 111 and a third deck starboard side section 112 in the ship width direction; the cabin side housing in the upper section of the third section and the third deck 111 connected thereto are divided into a port side section and a starboard side section by the cabin ramp 25; the cabin side shell and the third deck 11 in the upper section of the fourth section are divided into a port side section and a starboard side section by a cabin ramp 25; the cabin ramp 25 is divided into four segments in the vessel length direction, the four segments being each divided into a cabin ramp starboard side segment 271 in the vessel width direction;

S5, dividing the double bottom layer areas of the cargo hold in a segmented mode: in the ship length direction, the shell of the cargo hold double-bottom-layer area 6 and the first deck 9 in the shell are divided into ten sections in sequence, in the ship width direction, the first six sections of the cargo hold double-bottom-layer area shell are divided into a cargo hold double-bottom-layer port side section 61 and a cargo hold double-bottom-layer starboard side section 62 along the ship stern to the ship bow direction, the port side parts of the first six sections of the first deck 9 are respectively and jointly divided into a cargo hold double-bottom-layer middle section 63 as a whole with the first six sections of the cargo hold double-bottom-layer area shell, and the middle parts of the six sections are respectively and independently divided into a cargo hold double-bottom-layer middle section 63; the seventh and eighth sections of the cargo tank double bottom area hull and the seventh and eighth sections of the first deck 9 are collectively divided as a whole into a cargo tank double bottom port side section 61 and a cargo tank double bottom starboard side section 62, respectively, and the ninth and tenth sections of the cargo tank double bottom area hull and the ninth and tenth sections of the first deck 9 are not divided as a whole;

s6, dividing the side area of the cargo hold in a sectional mode: between the FR5 and FR285 rib positions, in the ship height direction, the cargo hold side area shell is divided into four sections from bottom to top by taking each deck as a boundary, and the four sections are divided into a port side section and a starboard side section in the ship width direction; the port side section and the starboard side section between the sixth deck 14 and the seventh deck 15 are divided together with the port side section and the starboard side section of the seventh deck 15 as a whole into three sections in the ship length direction, and the seventh deck 15 of the intermediate section is divided into a seventh deck port side section 151 and a seventh deck starboard side section 152 in the ship width direction with the ship center line as a boundary; between the FR5 and FR15 rib levels, the port side section and the starboard side section between the fifth layer deck 13 and the sixth layer deck 14 are divided together in the ship length direction as a whole into two sections with the port side portion of the sixth layer deck 14 in the section, the port side section and the starboard side section between the fourth layer deck 12 and the fifth layer deck 13 are divided into two sections in the ship length direction, the port side section and the starboard side section between the fourth layer deck 12 and the sixth layer deck 14 between the FR15 and the FR43 rib levels are divided together in the ship length direction as a whole into two sections with the port side portion of the sixth layer deck 14 in the section, the middle of the sixth layer deck 14 between the FR43 and the FR108 rib levels is divided into three sixth layer deck middle sections in the ship length direction, the port side section and the starboard side section between the third layer deck 11 and the fourth layer deck 12 are divided respectively into three sections in the ship length direction as a whole with the port side portion of the fourth layer deck 12 in the section, the port side section is divided into three sections in the same in the fourth layer deck 12 width direction, the port side section is divided into four sections in the same in the fourth layer deck section width direction as the fourth layer deck section in the fourth layer section in the width direction; between FR108 and FR285 rib positions, in the ship height direction, dividing the cargo hold side hull in the section into upper and lower two sections with the fourth deck 12 as a boundary, in the ship length direction, dividing the cargo hold side hull in the upper and lower two sections and the fourth to seventh deck into four sections, in the ship width direction, dividing the divided cargo hold side hull sections together with the port and starboard side portions of the connected fourth to seventh deck as a whole respectively into port side sections and starboard side sections, in the ship width direction, dividing the seventh and sixth deck middle sections in the section into port side and starboard side sections again, dividing the first three fourth deck middle sections in the length direction into the port and starboard side sections no longer;

S7, dividing the side cabin area of the cargo hold in a sectional mode: in the ship length direction, the third deck 11 and the hold sidecar shell below the third deck 11 are divided into nine stages at the same position, the hold sidecar shell above the third deck 11 and the fourth deck 12, the sixth deck 14 and the seventh deck 15 therein are divided into ten sections at the same position, and in the ship height direction, are divided into upper and lower sections; counting the ship stern from the ship bow direction and the ship stern from the ship bow direction, respectively dividing the cargo hold side tank shell and the first to fifth segmented port and starboard side parts of the third deck 11, the fourth deck 12, the sixth deck 14 and the seventh deck 15 connected with the cargo hold side tank shell into a cargo hold side tank port side part 71 and a cargo hold side tank starboard side part 72 as a whole, respectively, and dividing the third deck middle part, the fourth deck middle part and the sixth deck middle part in the section into respective port side parts and starboard side parts again in the ship width direction, and dividing the seventh deck middle part into a port side part, a middle part and a starboard side part in the ship width direction; dividing the sixth to ninth sections into a middle section and a lower section again with the third deck 11 as a boundary along the stern from the stern, dividing the cargo hold side tank housing of the sixth to eighth sections in the lower section and the port side portion of the third deck 11 connected thereto into a port side portion and a starboard side portion as a whole, dividing the middle portion of the third deck 11 into a third deck port side section 111 and a third deck starboard side section 112 in the ship width direction, and dividing the cargo hold side tank housing of the ninth section in the lower section and the third deck connected thereto into a port side portion and a starboard side portion as a whole; the hold sidecar shell of the sixth to eighth sections in the middle section and the port side portion of the fourth deck connected thereto are divided collectively as a whole into a port side portion and a starboard side portion, the middle portion of the fourth deck 12 is divided into a fourth deck port side section 121 and a fourth deck starboard side section 122 in the ship width direction, the hold sidecar shell of the ninth section in the middle section and the port side portion of the fourth deck 12 connected thereto are divided collectively as a whole into a port side portion and a starboard side portion, the middle portion of the fourth deck 12 is not divided any more, and the hold sidecar shell of the tenth section in the middle section and the fourth deck 12 connected thereto are divided collectively as a whole into a port side portion and a starboard side portion; the cargo hold sidecar hull in the upper section and the port side sections of the sixth deck 14, seventh deck 15 connected thereto are divided together in the ship width direction into port side sections and starboard side sections as a whole, the middle sections of the sixth to eighth sections of the sixth deck 14 are divided in the ship width direction into sixth deck port side sections 141, sixth deck middle sections 143 and sixth deck starboard side sections 142, the middle sections of the ninth to tenth sections of the sixth deck are divided in the ship width direction into sixth deck port side sections 141 and sixth deck starboard side sections 142, the middle sections of the sixth, seventh and tenth sections of the seventh deck are divided in the ship width direction into seventh deck port side sections 151 and seventh deck starboard side sections 152, and the middle sections of the eighth and ninth sections of the seventh deck 15 are divided in the ship width direction into seventh deck port side sections 151, seventh deck middle sections and seventh deck starboard sections 152;

S8, sectional division forms of the superstructure: dividing the A deck 22 and the part between the A deck 22 and the seventh deck 15 into five sections in turn along the stern toward the bow direction, dividing the part between the A deck 22 and the seventh deck 15 and both sides of the A deck 22 into an upper building port side section 51 and an upper building starboard side section 52 in the ship width direction, and dividing the middle part of the A deck 22 into an upper building B deck port side section 221 and an upper building B deck starboard side section 222; dividing the B deck 23 and the part between the B deck 23 and the A deck 22 into five sections in turn along the direction from the fore part to the aft part, wherein the fourth section and the fifth section are divided into an upper building B deck port side section 231, an upper building B deck starboard side section 232 and an upper building B deck middle section 233 in the ship width direction, the third section and the second section are not divided any more in the ship width direction, and the first section is divided into an upper building B deck port side section 231 and an upper building B deck starboard side section 232 in the ship width direction; dividing the C deck 24 and the part between the C deck 24 and the B deck 23 into two sections in turn along the stern to the bow direction, wherein the first section is not divided in the width direction of the ship, and the second section is divided into a C deck port side section 241 of the superstructure and a C deck starboard side section 242 of the superstructure in the width direction of the ship; dividing the cab overall above the C deck 24 into one segment; dividing a chimney positioned at one end of the B deck 23 close to the stern into a section; s9, in the length direction of the ship, the longitudinal wall of the starboard side first fixed ramp 16 between the third deck 11 and the fourth deck 12 is divided into two sections, and the whole starboard side first fixed ramp 16 is divided into three sections; the vertical wall of the port side first fixed ramp 16 between the third deck 11 and the fourth deck 12 is divided into four segments, and the port side first fixed ramp 16 is entirely divided into five segments;

S10, in the ship length direction, the ramp longitudinal wall and the ramp of the movable ramp 19 of the port side section between the fourth deck 12 and the sixth deck 14 are integrally divided into four ramp sections 191; the second fixed ramp 17, the longitudinal wall of the ramp and the ramp of the starboard section between the fourth deck 12 and the sixth deck 14 are divided into three sections;

s11. in the ship length direction, the ramp longitudinal wall and the ramp entirety of the third fixed ramp 18 of the port side section located between the sixth deck 14 and the seventh deck 15 divide the two sections.

The above is merely a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, but any simple modification, equivalent variation and modification of the above embodiments according to the technical matters of the present invention should be considered as the scope of the present invention for those skilled in the art.

Claims

1. The ro-ro ship is characterized by comprising a stern, a bow, a cabin area shell, a cargo area shell, an upper building, a first deck, a second deck, a third deck, a fourth deck, a fifth deck, a sixth deck and a seventh deck which are sequentially arranged from bottom to top, wherein the cabin area shell comprises a cabin double bottom area and a cabin side area, the cargo area shell comprises a cargo double bottom area, a cargo side area and a cargo side cabin area, the cabin area is arranged right in front of the stern, the cargo double bottom area is arranged right in front of the cabin double bottom area, the cabin side area shell is arranged right in front of the stern and the cabin area shell, the cabin side area shell is arranged right in front of the cargo double bottom area, the bow is arranged right in front of the cargo side area and the cargo side area, and is arranged right in front of the cargo side area and the cargo side area; the superstructure is arranged on a seventh deck; the first deck to the seventh deck are sequentially arranged on the ship shell from bottom to top;

The roll-on-roll ship comprises FR 11-FR 306 rib positions from the stern to the bow of the ship, and the first deck is positioned between FR48 and FR273 rib positions; the second deck is located between FR30 and FR75 rib positions; the third deck is positioned between the FR5 and FR306 rib positions; the fourth deck is positioned between the FR5 and FR305 rib positions, the fifth deck is divided into two sections, one section is arranged in a side area of the cargo hold and positioned between the FR5 and FR15 rib positions, the other section is arranged in a bow area and positioned between the FR285 and FR304 rib positions; the stern comprises a rear stern area between the FR5 and FR28 rib positions and a front stern area between the FR28 and FR50, wherein the front stern area comprises a second deck between the FR30 and FR50 and a third deck between the FR5 and FR50 rib positions; the cabin area is positioned between the FR48 and FR108 rib positions, part of the first deck is contained in the cabin double-bottom-layer area, and part of the second deck and part of the third deck are contained in the cabin broadside area; a cabin ramp is arranged between the second deck and part of the third deck, a host is arranged on two sides of the cabin ramp on the second deck, and fixed ramps are arranged on two sides above the cabin ramp on the third deck;

The bow part comprises a part of a first deck, a second deck, a third deck, a fourth deck, a fifth deck, a sixth deck and a seventh deck, wherein the part below the third deck is positioned between FR272 and FR306, and the part above the third deck is positioned between FR285 and FR 306; the cargo compartment double bottom layer area is positioned between the FR110 and the FR272, and comprises a part of the first deck; the cargo hold side area is positioned right above the stern and the cabin side and between FR-5 and FR110, the cargo hold side inner area comprises a fourth deck, a fifth deck, a sixth deck and a seventh deck, first fixing ramps are respectively arranged at two sides between the third deck and the fourth deck, and the first fixing ramps are positioned between FR180 and FR 249; the cargo hold side cabin area comprises a third deck, a fourth deck, a sixth deck and a seventh deck, wherein the cargo hold side cabin of the third deck and below is positioned between FR108 and FR273, the cargo hold side cabin of the third deck is positioned between FR108 and FR285, a movable ramp is arranged on the left side between the fourth deck and the sixth deck, a second fixed ramp is arranged on the right side, and a third fixed ramp is arranged on the left side between the sixth deck and the seventh deck; the superstructure is located between FR57 and FR161 rib positions;

The upper building is provided with an A deck, a B deck and a C deck from bottom to top, wherein the A deck is positioned between FR57 and FR160 rib positions, the B deck is positioned between FR75 and FR160 rib positions, the C deck is positioned between FR123 and FR158 rib positions, one end of the B deck, which is close to the stern, is provided with a chimney section and is positioned between FR65 and FR84 rib positions, the C deck is provided with a cab section, and the cab section is positioned between the C deck and a magnetic compass deck region; the first fixed ramp, the second fixed ramp and the third fixed ramp comprise an upper ramp plate, a lower ramp plate, an inner partition plate and ramp longitudinal walls, the upper ramp plate and the lower ramp plate are connected end to form a ramp, the ramp longitudinal walls are fixedly connected with two sides of the ramp, and the inner partition plate is arranged below the ramp.

2. The method for sectioning a roll-on/roll-off ship according to claim 1, comprising the steps of:

s1, dividing a bow section: dividing a first measurement pushing cabin positioned at the bow into a section; dividing an anchor pocket in a bow above a structural waterline into a segment;

S3, dividing the double bottom layer areas of the engine room in sections: in the length direction of the ship, the ship is divided into 3-4 sections, wherein a main engine base positioned in a double bottom layer area of the engine room is positioned in one section;

3. The method for dividing the stern section of the roll-on/roll-off ship according to claim 2, wherein the step S1 is specifically that the stern section of the rear section is divided into two sections in the ship length direction, and the two sections are divided into a stern port section, a stern middle section and a stern starboard section in the ship width direction; the second deck plate positioned in the front section stern area and the front section stern section are divided as a whole synchronously, and the third deck plate positioned in the front section stern area and the third deck plate positioned in the section stern area are divided together with the front section stern area and the rear section stern area as a whole respectively; in the step S2, a third deck, a second deck, a first deck and a bow shell below the third deck in the bow are divided into a first bow middle section, a second bow middle section and a third bow middle section as a whole in synchronization in the length direction of the ship, and the three sections are not divided in the width direction of the ship; dividing a fourth deck and a bow shell between the third deck and the fourth deck together as a whole in the width direction of the ship into a bow port side section and a bow starboard side section; dividing a fifth deck and a bow shell between the fifth deck and the fourth deck as a whole into a bow port side section and a bow starboard side section in the width direction of the ship; dividing a sixth deck and a bow shell between the sixth deck and the fifth deck as a whole into a bow port side section and a bow starboard side section in the width direction of the ship; the seventh deck and the bow casing between the seventh deck and the sixth deck are divided together in the ship width direction as a whole into a bow port side section and a bow starboard side section.

4. The method for dividing the sections of the roll-on/roll-off ship according to claim 2, wherein the step S3 is specifically that the cabin double bottom layer area and the part of the first deck therein are divided into a first cabin double bottom layer section, a second cabin double bottom layer wind section, a third cabin double bottom layer section and a fourth cabin double bottom layer section as a whole in sequence in the ship length direction, and the first cabin double bottom layer section, the second cabin double bottom layer section, the third cabin double bottom layer section and the fourth cabin double bottom layer section are divided into a cabin double bottom layer port section and a cabin double bottom layer starboard section in the ship width direction.

5. The method for sectioning a roll-on/roll-off ship according to claim 2, wherein the step S4 is specifically to divide the cabin side hull and the second deck and the third deck in the area into four sections in the ship length direction; in the ship height direction, a first section to a third section from a stern to a bow direction are divided into an upper section and a lower section, in the ship width direction, a cabin side shell in the lower section and a port side part of a second deck connected with the cabin side shell are respectively and jointly divided into a port side part and a port side part of a cabin side as a whole, a second deck middle part in the section is divided into a second deck middle section, the cabin side shell in the second section and the second deck are divided into a cabin port side section and a cabin port side section by taking a cabin ramp as a boundary, the cabin side shell in the third section and the port side part connected with the second deck are respectively and jointly divided into a cabin port side section and a cabin port side section as a whole, the middle part of the second deck is divided into a second deck port side section and a second deck port side section in the ship width direction, and the cabin side shell in the fourth section and the second deck are divided into a cabin port side section and a cabin side section in the ship width direction; the host hanging ports positioned at two sides of the cabin ramp respectively divide a first host hanging port section and a second host hanging port section; the cabin side shell and the third deck in the upper section of the first section are divided into a cabin port side section and a cabin starboard side section by taking a cabin ramp as a boundary, the cabin side shell and the port side part of the third deck connected with the cabin side shell in the upper section of the second section are respectively divided into a port side section and a starboard side section as a whole, the middle part of the third deck is divided into a third deck middle section, and the middle part of the third deck is divided into a third deck port side section and a third deck starboard side section in the ship width direction; a cabin side shell in an upper section of the third section and a third deck connected with the cabin side shell are divided into a port side section and a starboard side section by taking a cabin ramp as a boundary; the cabin side shell and the third deck in the upper section of the fourth section are divided into a port side section and a starboard side section by the cabin ramp; the cabin ramp is divided into four segments in the ship length direction, which are each divided into cabin ramp starboard side segments in the ship width direction.

6. The method for sectioning a roll-on/roll-off ship according to claim 2, wherein the step S5 is specifically a section-division form of a double bottom layer region of the cargo hold: in the length direction of the ship, the shell of the cargo hold double-bottom-layer area and a first deck in the shell are sequentially divided into ten sections, in the width direction of the ship, the first six sections of the cargo hold double-bottom-layer area shell are divided into a cargo hold double-bottom-layer port side section and a cargo hold double-bottom-layer starboard side section along the stern to the bow direction, the port side parts of the first six sections of the deck are respectively and jointly divided into a cargo hold double-bottom-layer middle section as a whole together with the first six sections of the cargo hold double-bottom-layer area shell, and the middle parts of the six sections are respectively and independently divided into cargo hold double-bottom-layer middle sections; the seventh and eighth sections of the cargo hold double bottom area enclosure and the seventh and eighth sections of the first deck are respectively and jointly divided as a whole into a cargo hold double bottom port side section and a cargo hold double bottom starboard side section, and the ninth and tenth sections of the cargo hold double bottom area enclosure and the ninth and tenth sections of the first deck are respectively not divided as a whole;

7. The method for sectioning a roll-on/roll-off ship according to claim 2, wherein the step S7 is specifically a section-wise division of a cargo hold side tank region: in the length direction of the ship, the third deck and the cargo hold side cabin shell below the third deck are divided into nine sections at the same position, and the cargo hold side cabin shell above the third deck and the fourth deck, the sixth deck and the seventh deck in the cargo hold side cabin shell above the third deck are divided into ten sections at the same position, and are divided into an upper section and a lower section in the height direction of the ship; counting from the stern in sequence from the direction of the ship bow, dividing the cargo hold side tank shell and the first to fifth segmented port-starboard side parts of the third deck, the fourth deck, the sixth deck and the seventh deck connected with the cargo hold side tank shell into a cargo hold side tank port-starboard side part and a cargo hold side tank starboard side part respectively as a whole together, and dividing the third deck middle part, the fourth deck middle part and the sixth deck middle part in the section into respective port-starboard side parts and starboard side parts again in the ship width direction, and dividing the seventh deck middle part into a port-starboard side part, a middle part and a starboard side part in the ship width direction; dividing the sixth to ninth sections into a middle section and a lower section again by taking a third deck as a boundary along the direction from the stern, dividing the cargo hold side cabin shell of the sixth to eighth sections and the port side part of the third deck connected with the cargo hold side cabin shell of the sixth to eighth sections in the lower section into a port side part and a starboard side part as a whole, dividing the middle part of the third deck into the third deck port side section and the third deck starboard side section in the ship width direction, and dividing the cargo hold side cabin shell of the ninth section in the lower section and the third deck connected with the cargo hold side cabin shell of the ninth section into the port side part and the starboard side part as a whole; the cargo hold side tank shell of the ninth section in the middle section and the port-and-starboard side part of the fourth deck connected thereto are commonly divided into a port side part and a starboard side part as a whole, the middle part of the fourth deck is divided into a fourth deck port side section and a fourth deck starboard side section in the ship width direction, the cargo hold side tank shell of the ninth section in the middle section and the port-and-starboard side part of the fourth deck connected thereto are commonly divided into a port side part and a starboard side part as a whole, the middle part of the fourth deck is not divided any more, and the cargo hold side tank shell of the tenth section in the middle section and the fourth deck connected thereto are commonly divided into a port side part and a starboard side part as a whole; the cargo hold side tank shell in the upper section and the sixth deck, the port side section of the seventh deck and the port side section of the seventh deck connected thereto are divided together in the ship width direction as a whole into a port side section and a port side section, the middle parts of the sixth to eighth sections of the sixth deck are divided in the ship width direction into a sixth deck port side section, a sixth deck middle section and a sixth deck port side section, the middle parts of the ninth to tenth sections of the sixth deck are divided in the ship width direction into a sixth deck port side section and a sixth deck port side section, the sixth sections of the seventh deck, the seventh sections and the middle parts of the tenth sections are divided in the ship width direction into a seventh deck port side section, a seventh deck middle section and a seventh deck port side section, and a seventh deck port side section.

8. The method of sectioning a roll-on/roll-off ship of claim 2, further comprising: s8, sectional division forms of the superstructure: dividing the deck A and the part between the deck A and the deck seventh into five sections along the direction from the stern part to the bow part in sequence, dividing the part between the deck A and the deck seventh and the two sides of the deck A into an upper building port side section and an upper building starboard side section along the width direction of the ship, and dividing the middle part of the deck A into an upper building B layer deck port side section and an upper building B layer deck starboard side section; dividing the deck B and the part between the deck B and the deck A into five sections in turn along the direction from the bow part to the stern part, wherein the fourth section and the fifth section are divided into a port side section of the deck B of the upper layer building, a starboard side section of the deck B of the upper layer building and a middle section of the deck B of the upper layer building in the width direction of the ship, the third section and the second section are not divided any more in the width direction of the ship, and the first section is divided into the port side section of the deck B of the upper layer building and the starboard side section of the deck B of the upper layer building in the width direction of the ship; dividing the C deck and a part between the C deck and the B deck into two sections in turn along the direction from the stern to the bow, wherein the first section is not divided in the width direction of the ship, and the second section is divided into a port side section of the C deck of the upper building and a starboard side section of the C deck of the upper building in the width direction of the ship; dividing the whole cab above the C deck into a section; dividing a chimney positioned at one end of the B deck close to the stern into a section;

S9, dividing the ramp segments: in the length direction of the ship, the longitudinal wall of the starboard side first fixed ramp between the third deck and the fourth deck is divided into two sections, and the whole starboard side first fixed ramp is divided into three sections; the ramp longitudinal wall of the port side first fixed ramp positioned between the third deck and the fourth deck is divided into four sections, and the port side first fixed ramp is wholly divided into five sections; in the ship length direction, the longitudinal wall of the moving ramp of the port side section between the fourth deck and the sixth deck is divided into four ramp sections; a second fixed ramp of a starboard side section between the fourth deck and the sixth deck, a ramp longitudinal wall and a ramp are divided into three ramp sections, and in the ship width direction, the second fixed ramp is divided into two sections of a second fixed ramp port side section and a second fixed ramp starboard side section; in the ship length direction, the ramp longitudinal wall and the ramp of the third fixed ramp of the port side section between the sixth deck and the seventh deck integrally divide the two sections.