CN115783115A - The special method of strengthening the box feet in the cabin of the multi-purpose ship - Google Patents

Abstract

The invention discloses a method for reinforcing special cabin box feet of a multipurpose ship, which comprises the following steps: the bottom of the inner bottom of the cargo hold is fixedly provided with a plurality of transversely extending solid rib plates, the distances between the adjacent solid rib plates are equal, and the standard hold length of the cargo hold is determined; the bottom of the cargo hold inner bottom is fixedly provided with a plurality of longitudinally extending side girders, and the upper surface of the cargo hold inner bottom is fixedly provided with a box foot for supporting the container; and arranging the box legs above the joints of the solid rib plates and the side truss materials. The invention can reduce the workload of later detailed design reinforcement and the workload of shipyard construction, and achieve the purpose of reducing weight, thereby reducing the design weight, the workload of welding, the cost of shipyard and improving the economy of ships.

Description

The special method of strengthening the box feet in the cabin of the multi-purpose ship

technical field

The invention relates to the technical field of ships, in particular to a method for strengthening special tank feet in cabins of multi-purpose ships.

Background technique

Functionally, multi-purpose ships have various functions such as loading bulk cargo, bulk cargo, containers, steel coils, etc. There is no standard longitudinal frame layout in the conventional cargo hold skeleton form. However, when loading containers, due to the particularity of the size of the container, there are special requirements for the strengthening of the container feet. The general box foot reinforcement only considers the installation of longitudinal girders in the width direction of the container ship, and the transverse bracket support is arbitrary.

The design of a ship is a complex and individual process. Especially for multi-purpose ships, they are usually designed individually based on the needs of the ship owner. In the preliminary design, the size of the cargo hold is usually only considered to meet the loading requirements. This is suitable for multi-purpose ships carrying general large and bulk cargo. However, for multi-purpose ships loaded with containers, the strengthening of the embedded box feet should be considered in the early stage design and evaluated during the layout, and the arrangement of the ship's rib spacing should be fully detailed. The workload optimization is very necessary.

Contents of the invention

The technical problem to be solved by the present invention is to provide a special strengthening method for the box foot in the cabin of a multi-purpose ship in order to overcome the above-mentioned defects in the prior art.

The present invention solves the above technical problems through the following technical solutions:

A special strengthening method for tank feet in the cabin of a multi-purpose ship, which includes: step 1, fixing a plurality of transversely extending solid floor plates at the bottom of the cargo hold inner bottom, and the distance between adjacent solid floor plates is equal to determine the cargo hold The standard length L of the cabin, the calculation formula is L=S×N×4, where S is the spacing between adjacent solid floors, and N is the number of rows of containers in the cargo hold; step 2, at the bottom of the cargo hold inner bottom A plurality of longitudinally extending side girders are fixed, and box feet for supporting containers are fixed on the upper surface of the inner bottom of the cargo hold; the box feet are arranged above the joints of solid floors and side girders.

Inner bottom longitudinals are arranged outside side girders, and the inner bottom longitudinals are fixed to the bottom of cargo hold inner bottom.

A bracket is provided below the box foot, and the top of the bracket is fixed to the bottom of the inner bottom of the cargo hold.

Both ends of brackets are fixed to side girders and inner bottom longitudinals respectively.

There are two brackets under the box foot, and the two brackets are respectively arranged on both sides of the solid floors.

In step 1, the spacing S between adjacent solid floors is 1533±2mm.

The center of the foot is at the intersection of the solid floor and the inner bottom of the cargo hold.

The distance from the intersection point of the solid floor below the box foot and the side girder to the center point of the box foot is 125-135mm.

Each row of box feet is located above the same solid floor; the distance between the centers of two adjacent rows of box feet is 6132±4mm.

The distance between containers along the length of the ship is 70-80mm.

The beneficial effect of the present invention is that: according to the standard size of the container of 20TEU and 40FEU, the present invention formulates the optimal solid floor spacing, reduces the workload of detailed design and reinforcement in the later stage and the workload of shipyard construction, and achieves the purpose of weight reduction. Lighten the design, reduce the workload of welding, reduce the cost of the shipyard, and improve the economy of the ship.

Description of drawings

Fig. 1 is a top view of a cargo compartment of a preferred embodiment of the present invention.

Fig. 2 is a top view of the box foot structure of the preferred embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of A-A in Fig. 2 .

Detailed ways

A preferred embodiment will be given below, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.

As shown in Fig. 1, Fig. 2 and Fig. 3, a special method for strengthening the box feet in the cabin of a multi-purpose ship, which includes:

Step 1: Fix a plurality of transversely extending solid floors 11 at the bottom of the inner bottom 10 of the cargo hold, the distance between adjacent solid floors 11 is equal, determine the standard length L of the cargo hold, and the calculation formula is L=S×N ×4, where S is the spacing between adjacent solid floors, and N is the number of rows of containers in the cargo hold. The spacing S between adjacent solid floors is 1533±2mm.

Step 2, fixing a plurality of longitudinally extending side girders 12 at the bottom of the cargo tank inner bottom 10, fixing box feet 20 for supporting containers on the upper surface of the cargo tank inner bottom 10; setting the box feet 20 on the solid floors 11 and side girder 12 above the connection.

Inner bottom longitudinals 13 are arranged outside side girders 12, and inner bottom longitudinals 13 are fixedly connected to the bottom of the inner bottom of the cargo hold.

A bracket 14 is arranged below the box foot 20 , and the top of the bracket 14 is affixed to the bottom of the cargo hold inner bottom 10 . Both ends of the bracket 14 are fixed to the side girder 12 and the inner bottom longitudinal 13 respectively.

There are two brackets 14 below the box foot 20, and the two brackets 14 are respectively arranged on both sides of the solid floor 11.

The center of the box foot 20 is located at the intersection of the solid floors and the inner bottom of the cargo hold.

In order to make the construction and welding more convenient, the distance from the intersection point of the solid floor under the box foot and the side girder to the center point of the box foot is 125-135mm. In the preferred solution, the distance from the intersection point of the solid floor below the box foot and the side girder to the center point of the box foot is 130mm.

Each row of box feet is located above the same solid floor; the distance between the centers of two adjacent rows of box feet is 6132±4mm.

The distance between the containers along the length of the ship is 70-80 mm. In the preferred solution, the distance between the containers along the length of the ship is 76 mm.

The containers in this technical solution are standard 20TEU containers and 40FEU containers. The corner spacing of a standard 20TEU container is 5853±4mm, and the corner spacing of a standard 40FEU container is 11985±4mm. In order to maximize packing, the feet of the 20TEU container and the 40FEU container are shared, and the distance between the containers along the length of the ship is uniformly 76mm, which fully meets the disordered loading and unloading of containers of two sizes.

According to the above-mentioned characteristics, this technical solution provides a solution suitable for multi-purpose ships loaded with containers, wherein the spacing between adjacent solid floor plates is S=1533±2mm, assuming that the number of rows of containers in the cargo hold is N, and the number of rows of the cargo hold The calculation formula of the standard cabin length L is L=S×N×4.

The invention formulates the standard rib spacing and the length of the cargo hold, optimizes the length of the cargo hold in layout, and realizes the layout optimization of standardized multi-purpose ships loaded with containers.

In the present invention, the box foot sits on the cross-reinforced corner of the solid floor and the side girder, and only one reinforcement is added on one side, which saves steel and reduces the construction workload of the shipyard.

According to the standard container size of 20TEU and 40FEU, the present invention formulates the optimized solid floor spacing, reduces the workload of detailed design and reinforcement in the later stage and the workload of shipyard construction, and achieves the purpose of weight reduction, making the design lightweight and reducing welding reduce the workload of the shipyard, and improve the economy of the ship.

Although the specific implementation of the present invention has been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (10)

1. A method of reinforcing a special inboard box leg of a multipurpose vessel, comprising: step 1, fixedly arranging a plurality of transversely extending solid rib plates at the bottom of an inner bottom of a cargo hold, wherein the distances between adjacent solid rib plates are equal, and determining the standard hold length L of the cargo hold, wherein the calculation formula is L = S multiplied by N multiplied by 4, S is the distance between the adjacent solid rib plates, and N is the number of rows of containers in the cargo hold; step 2, fixedly arranging a plurality of longitudinally extending side girders at the bottom of the inner bottom of the cargo hold, and fixedly arranging box legs for supporting the container on the upper surface of the inner bottom of the cargo hold; and arranging the box foot above the joint of the solid rib plate and the side truss material.

2. The special inboard box leg reinforcing method of multipurpose boat as claimed in claim 1, wherein an inner bottom longitudinal frame is provided outside the side girder, and the inner bottom longitudinal frame is fixed to the bottom of the inner bottom of the cargo hold.

3. Method for reinforcing the special inboard box feet of a multipurpose ship as claimed in claim 2, characterized in that under the box feet there are provided toggle plates, the top of which is fastened to the bottom of the inboard bottom of the cargo hold.

4. Method for reinforcing the feet of a multipurpose vessel, in particular a cabin, according to claim 3, characterized in that the toggle plate is fastened at its two ends to the side girders and to the inner bottom longitudinals, respectively.

5. A method of reinforcing a special inboard box leg of a utility boat as claimed in claim 3 wherein there are two toggle plates under the box leg, the two toggle plates being respectively disposed on both sides of the solid rib plate.

6. The method for reinforcing the special cabin box feet of the multipurpose ship according to claim 1, wherein in the step 1, the space S between the adjacent solid ribs is 1533 ± 2mm.

7. Method for reinforcing the special inboard box feet of a multipurpose boat as claimed in claim 1, wherein the center of the box feet is located at the intersection of the solid rib and the inner bottom of the cargo hold.

8. The method for reinforcing a special under-deck box leg of a multipurpose boat as recited in claim 7, wherein a distance from an intersection of the solid rib and the side girder under the box leg to a center point of the box leg is 125 to 135mm.

9. The method of claim 1, wherein the legs of each row are located above the same solid rib plate; the distance between the centers of two adjacent rows of box legs is 6132 +/-4 mm.

10. The special inboard leg reinforcing method of the multipurpose vessel as claimed in claim 1, wherein the interval between the containers in the length direction of the vessel is 70 to 80mm.

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