Electrical & Electronic Engineering |
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AS/RS based yard and yard planning |
Ya-hong HU, Zheng-dong ZHU, Wen-jing HSU |
College of Information Engineering, Zhejiang University of Technology, Hangzhou 310032, China; Department of Computer Science, Xi’an Jiaotong University, Xi’an 710049, China; School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore |
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Abstract In this paper, we apply the split-platform automated storage/retrieval systems (SP-AS/RSs) (Hu et al., 2005) to store containers in the yard to improve the yard performance and to increase the utilization of the yard space. The layout of an SP-AS/RS based yard is described in detail. To achieve an efficient operation, we present a novel yard space allocation policy called the ‘second-carrier-based allocation policy’, which can help to alleviate the out-of-sequence problem of containers and the congestion of vehicles at the AS/RS racks. Different allocation policies are compared by an integrated container terminal simulation system. The simulation results show that the second-carrier-based policy is very efficient and has the potential to offer high terminal performance.
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Received: 26 September 2007
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