Bulk Carrier Corrugated Bulkhead

rough shaped transverse bulkheads are commonly used on bulk carrier. The groove bars of the corrugated bulkhead are along the depth direction of the ship, which means the groove is upright. If the cargo hold is filled with loose cargo, such as coal, mineral sand, bulk fertilizers, and other smaller particles, this type of bulkhead will not only have no loss of space, but also because it is a vertical groove, the loading and unloading of loose cargo in the cargo hold is very easy and convenient.

If the cargo hold contains miscellaneous items, such as bagged goods, rolled steel, large boxes, and other packaged goods with larger sizes, this type of bulkhead will result in some loss of space. Bulk carrier are naturally used for loading bulk cargo, so corrugated bulkhead are very suitable for use on bulk carrier. This article will introduce the structure of corrugated bulkhead for bulk carrier.  

Cargo hold of bulk carrier

Bagged cargo on bulk carriers

Bulk Carrier Corrugated Bulkhead Structures

Bulk carrier corrugated bulkhead are made of pressed steel plates, with its corrugated bulkhead folds to replace the role of reinforcing material. Compared with the flat bulkhead, the advantage of the grooved bulkhead is that under the condition of ensuring the same strength, it can reduce the weight of the structure and save steel. At the same time, due to the elimination of reinforcement and its elbow plate, thus reducing the workload of assembly and welding. In bulk carrier, it is more convenient to clear the hold and favorable to prevent corrosion. corrugated bulkhead are mostly used in bulk carrier.

The profile shapes of bulk carrier corrugated bulkhead, as shown in the figure, are triangular, rectangular, trapezoidal, curved, etc., of which, the trapezoidal profile is more widely used.

The ends of corrugated bulkhead for bulk carrier can also be welded directly to the bottom and deck of the ship, or the slotted body can be mounted on a panel of T-profile, as shown in the figure. Sometimes vertical slotted transverse bulkheads are provided with top and bottom benches at the upper and lower ends.Normally, the height of the bottom stool is not less than 3 times the depth of the slot and the width of the bottom is not less than 2.5 times the average depth of the slot. The height of the top stool should normally be 2 to 3 times the depth of the slot, while the height of the rectangular top stool is normally 2 times the depth of the slot, but should be greater than the height of the deck strong beam. The width of the bottom plate of the top bench is generally equal to the width of the top plate of the bottom bench. Top bench internal component arrangement is similar to the bottom bench, are a kind of box structure with internal partitions and reinforcing materials, but the top bench to withstand the load is smaller, the external dimensions than the bottom bench to be smaller, and its internal components to the vertical arrangement for more.

Conclude

Bulk carrier corrugated bulkhead are also not pressed from a single sheet of steel, but are made by splicing together multiple sheets of steel. In the manufacturing process, cracks often appear on the tensile side of the steel plate, while the compressive side usually does not. Regardless of the bulk carrier corrugated bulkhead web and wing plate connection, or the bending radius, the weld bending larger place, are relatively easy to crack or open weld place.