Thursday, 13:45 - 14:10 h, Room: H 2036


Yuan Yuan
Integrated ship plan of strip coil consolidation and stowage

Coauthor: Tang Lixin


In iron and steel industry, finished products such as strip coils are mainly transported by ship. The planning of ship transportation includes consolidation planning and stowage planning. Consolidation planning is to determine which coils to be loaded on a given ship according to the delivery dates, destinations and storage locations of the coils. Stowage planning is to allocate exact position to each coil based on the constraints about the ship's stability. Ordinary researches divided the problem into two subproblems, and discussed them sequentially. The solution obtained by solving the two problems may not be very good or there may be many shifts, or even not all the coils in consolidation plan could be loaded. This is because the size of coils is irregular and the constraints for balance are rigorous, but the frame of ship was not considered by consolidation planning. The situation motivates us to integrate the two subproblems. We formulate the problem and relax it by a second order cone programming approach. An approximate solution is obtained by a heuristic method.


Talk 2 of the contributed session Thu.2.H 2036
"Conic relaxation approaches for scheduling and selection problems" [...]
Cluster 4
"Conic programming" [...]


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