Optimization of Layout and Routing in Steel Logistics Park
Aiming to solve the problems of low equipment utilization and long pick-up waiting time in a steel logistics park,a two-stage model considering the storage layout design and pike-up routing optimization simultaneously was proposed to balance the load of operation equipment.Firstly,in order to balance the crane's workload in a single yard,a storage layout model was proposed based on the two-dimensional packing strategy,and a pendulum heuristic strategy was designed to optimize the model.Then,on the basis of the storage layout,a optimization model of pick-up path was constructed to balance all cranes'workload in the whole yard.And a random key encoding and decoding strategy applied to the whale optimization algorithm was designed to optimize the vehicle picking up path.In order to verify the effectiveness of the proposed model and algorithm,a practical case ex-periment was introduced.and the experimental results were analyzed from three aspects of task allocation,travel path and dwell time.The conclusion show that the proposed model and algorithm can get an excellent balance of workload and reduce the wait-ing time of vehicles effectively.
NETL
NSTL
万方数据
维普
