چكيده به لاتين
Maritime transport is a branch of transport that performs a vital and influential role in international trade. Container terminals in ports are the only connection point between sea and land freight in the global freight chain. One of the most challenging operations of the container terminal is scheduling the quay cranes to unload and load the container cargo from the moored vessel at the quay so that each of the cranes active in this process is most efficient. Therefore, port operators, using information such as the time of arrival of container ships and their stowage planning and the physical characteristics of each container for transportation, set a schedule for unloading and loading containers. However, due to various reasons of uncertainty such as crane failure during operation, delay in arrival time, mooring and unloading / loading of vessels and changes in stowage planning information, it often deviates from its expected value and It disrupts the initial schedule of quay cranes, and in some cases it is even invalid and unenforceable. In this thesis, by presenting a method for presenting the rescheduling program of quay cranes in uncertainty conditions with the approach of reducing the delay caused by the disturbance to the wharf operating system and considering the physical condition of the berth and container ships and non-interference of cranes while during the operation. The modeling presented in this research is a mixed integer program (MIL) with the approach of Taguchi method. In the quay crane scheduling program, by specifying a set of tasks on container ships and quay cranes, we seek to provide a sequence of tasks and scheduling of each of them. The quay crane rescheduling program is adjusted according to dynamic and stochastic data so that it can have the most adaptability and flexibility with the real conditions in the port. This factor will reduce the service time of ships, speed up the loading and unloading of containers, as well as increase the efficiency of the container terminal. As a result, by increasing the satisfaction of shipping companies, the prevailing conditions can create competition with other ports. The aim of this study is to use optimization problems and provide an appropriate mathematical model in the face of uncertainty and the resulting disorders, rescheduling based on the two bases of identifying disorders and resolving them, in order to minimize provide the effect of disturbances on the performance of the quay crane scheduling, saving the operation time of this equipment while maintaining operating costs and reducing the amount of deviation from the initial schedule. Thus, the continuation of the quay crane operation process is done in such a way as to prevent the development of systematic irregularities and the quay cranes can carry out unloading and loading operations there with minimal delay.
