CN-118992046-B - Liquid cargo ship structure design method and ship

CN118992046BCN 118992046 BCN118992046 BCN 118992046BCN-118992046-B

Abstract

The invention relates to the technical field of ships, in particular to a liquid cargo ship structure design method and a ship, wherein the liquid cargo ship structure design method comprises the following steps that an independent liquid cargo tank is positioned in a ship cabin; the first strong ribs and the plurality of second strong ribs are fixedly arranged in the independent liquid cargo tank along the length direction of the independent liquid cargo tank, the first strong ribs comprise upper ribs and lower ribs, the lower ribs and the plurality of second strong ribs are arranged at equal intervals along the length direction of the independent liquid cargo tank at set distances, the upper ribs and the lower ribs are arranged in a staggered mode, the first strong frames and the plurality of second strong frames are arranged on the inner wall surface of the ship tank at intervals, the plurality of floating stop seats are arranged on the upper end surface of the independent liquid cargo tank at intervals, and the plurality of supporting seats are arranged on the bottom plate of the ship tank. The invention can lead the load of the anti-floating seat and the bearing seat to tend to be average, thereby simplifying the design, reducing the construction difficulty and reducing the construction cost.

Inventors

WANG LIANG
ZHANG TIANPING
REN PING
XIAO LIJUN
ZHU CHENGPING
CHENG ZHI
LIU XIAOHONG
SU LUOQING
ZHANG KE

Assignees

广东广船国际海洋科技研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20240924

Claims (10)

1. The structural design method of the liquid cargo ship is characterized by comprising the following steps of: The independent cargo tank (2) is positioned in the cabin, and the length direction of the independent cargo tank (2) is consistent with the length direction of the ship body (1); A first strong rib and a plurality of second strong ribs (24) are fixedly arranged in the independent liquid cargo tank (2) along the length direction of the independent liquid cargo tank (2), the first strong ribs comprise upper ribs (22) and lower ribs (23), the lower ribs (23) and the plurality of second strong ribs (24) are arranged at equal intervals along the length direction of the independent liquid cargo tank (2), the upper ribs (22) and the lower ribs (23) are positioned between the second strong ribs (24) closest to the end wall (21) of the independent liquid cargo tank (2) and the end wall (21), the upper ribs (22) and the lower ribs (23) are staggered, the distance between the upper ribs (22) and the transverse bulkhead (11) of the ship cabin is equal to the set distance, and the distance between the lower ribs (23) and the transverse bulkhead (11) of the ship cabin is smaller than the set distance; The inner wall surface of the cabin is provided with a first strong frame and a plurality of second strong frames (15) at intervals, the first strong frame comprises an upper strong frame body (13) and a lower strong frame body (14), the upper strong frame body (13) is arranged opposite to the upper rib (22), the lower strong frame body (14) is arranged opposite to the lower rib (23), and the plurality of second strong frames (15) are arranged opposite to the plurality of second strong ribs (24) one by one; A plurality of floating stopping seats (3) are arranged on the upper end surface of the independent cargo tank (2) at intervals, and the floating stopping seats (3) are arranged opposite to the upper ribs (22) and the second strong ribs (24); A plurality of supporting seats (5) are arranged on a bottom plate (12) of the cabin, a plurality of supporting seats (5) are correspondingly arranged with the lower strong frame body (14) and a plurality of second strong frames (15), and the supporting seats (5) are used for supporting the independent cargo tank (2).
2. The tanker structural design method according to claim 1, wherein a horizontal truss structure (4) is fixedly provided on the end wall (21), the horizontal truss structure (4) is horizontally arranged, the upper rib (22) is located at an upper end of the horizontal truss structure (4), and the upper rib (22) is welded with the horizontal truss structure (4).
3. The tanker structural design method according to claim 2, wherein the lower ribs (23) are located at the lower end of the horizontal truss structure (4), and the lower ribs (23) are welded to the horizontal truss structure (4).
4. A tanker design method according to claim 2, characterized in that the horizontal truss structure (4) extends along the independent cargo tank (2) to a second strengthening rib (24) closest to the end wall (21), and that the horizontal truss structure (4) is welded to the second strengthening rib (24).
5. The tanker structural design method according to claim 1, wherein the support base (5) is provided with a first laminate wood (51) for supporting one end of the independent cargo tank (2).
6. The tanker structural design method according to claim 1, wherein the upper end of the anti-floating seat (3) is provided with a second laminated wood (31).
7. The tanker structural design method according to claim 1, wherein the second strong ribs (24) are ring-shaped.
8. The tanker structural design method according to claim 1, wherein the independent cargo tank (2) is prismatic, prismatic table or a combination of prismatic and prismatic table.
9. The tanker structural design method according to claim 1, wherein the independent cargo tanks (2) are symmetrical with respect to the middle longitudinal plane of the hull (1).
10. The ship is characterized by comprising an independent cargo tank (2) and a ship body (1), wherein the independent cargo tank is arranged in a cabin of the ship body (1), and the independent cargo tank (2) and the ship body (1) are designed by adopting the liquid cargo ship structural design method as set forth in any one of claims 1-9.

Description

Liquid cargo ship structure design method and ship Technical Field The invention relates to the technical field of ships, in particular to a liquid cargo ship structure design method and a ship. Background The liquefied gas cargo of the liquefied gas carrier usually takes an independent cargo tank as a container, and the large independent cargo tank is usually an A-type independent cargo tank or a B-type independent cargo tank. The independent cargo tank is a separate tank which is placed in the hold, and the metallic material of the independent cargo tank itself is not connected to the hull compartment structure. The limiting system consists of a plurality of supporting seats, laminated wood and other materials are arranged on the surfaces of the supporting seats, and the ship body and the tank body are contacted through the laminated wood. The supporting seat can be divided into a plurality of types according to the limiting direction and the function, and mainly comprises a supporting seat and a floating stopping seat. The supporting seat is arranged between the double-layer bottom plate of the cabin and the bottom of the tank body and is used for supporting the independent cargo tank. The floating stopping seat is arranged between the shoulder of the tank body and the hull inner shell plate above the tank body, a gap is reserved at the floating stopping seat, and when the independent liquid cargo tank floats after the tank is damaged and water enters, the floating stopping seat can prevent the independent liquid cargo tank from continuously floating upwards to damage the hull above the independent liquid cargo tank. A plurality of strong ribs are arranged in the independent liquid cargo tank, and the single strong ribs are positioned in a plane vertical to the ship length direction and are sequentially and equidistantly arranged along the ship length direction. The strong ribs are of a complete closed-loop structure, and the ship cabin is also provided with strong frames corresponding to the strong ribs of the independent cargo tank so as to arrange supporting seats between the strong ribs to transmit load. The cabin strong frames are arranged at equal intervals in the length direction range of the ship body. The inner shell of the cabin is longitudinally provided with a plurality of longitudinal ribs for supporting the cabin wall plate, the longitudinal ribs penetrate through the reinforcing frame and are fixedly connected with the reinforcing frame, and the reinforcing frame provides supporting effect for the longitudinal ribs. The distance from the transverse bulkhead of the cabin to the nearest first strong frame is equal to the intervals between other strong frames, the first strong ribs of the independent liquid cargo tanks and the first strong frames of the cabin are correspondingly arranged and are positioned on the same cross section, and the distance from the first strong ribs of the independent liquid cargo tanks to the rear end wall of the independent liquid cargo tanks is greater than half of the distance between the strong ribs, so that the bearing range of the first strong ribs exceeds the other strong ribs, and the bearing seat below the first strong ribs bears larger load. When the ship cabin is damaged and water is fed, if the cargoes in the independent liquid cargo cabin are fewer or no cargoes, the independent liquid cargo cabin floats, at the moment, the floating stop seat at the top of the independent liquid cargo cabin can prop against the structure of the ship cabin, the movement of the independent liquid cargo cabin is limited, the fixing effect is achieved, and the load is shared by the plurality of floating stop seats which are longitudinally arranged. Under this load, the roof hold structure will arch slightly upwards. The compression amount of the middle position of the cabin length is minimum, and the compression amount of the transverse cabin wall close to the ship is maximum, so that the floating stop seat close to the transverse cabin wall bears the largest load, and obvious uneven load distribution occurs. The floating stop seat close to the transverse bulkhead and the independent liquid cargo tank structure and the cabin structure nearby need to be greatly reinforced, and the structure in the middle of the cabin length is excessive in strength, so that the structural design cannot be unified, and the construction complexity is increased. The hull near the anti-floating seat is provided with longitudinal bones, the first strong frame of the hull is deformed upwards under the load action of the anti-floating seat, but the transverse bulkhead is not deformed, the longitudinal bones of the hull between the two are bent, the greater the load of the anti-floating seat is, the more serious the bending of the longitudinal bones is, the strength of the longitudinal bones is increased, the larger specification is selected, the cost is increased, the construction difficulty is in