چكيده به لاتين
The scheduling of construction projects is one of the main goals of managing construction projects. Employers always have a lot of pressure on contractors to finish the project in the shortest possible time. Consequently, contractors will include more activities in the schedule. In this way, the accumulation of activities creates a congestion involving workers and the equipment needed to carry out the activities. Space is a major source and constraint on construction projects. In the implementation of project activities, other resources, such as manpower, machinery, equipment and materials, require space. Therefore, the delay in the implementation of scheduling, compressing and accelerating the implementation of activities, the parallel implementation of activities that are usually performed in a sequential manner, and the large number of activities with a large number of workers, All are cases that cause interference between the workspace required by each activity. These interactions have a significant impact on the project process. According to the studies carried out among these works, the two factors of productivity and safety risk are most influenced by the interference of work space. So far, studies have been done and the models presented to investigate these interactions, because of these two factors, consider all interferences as unacceptable and only try to prevent the interference. In most of these studies, the only way to eliminate interference is to delay one of the activities and continue another activity.
To plan and have a scheduling system for achieving the goals of the project, the use of simulation is considered a reliable and necessary way. In this research, discrete event simulation was used to simulate and provide a scheduling system. The engine of SIMPHONY software and programming in Visual Studio are used to provide a new schedule. The purpose of this research is to provide a system for scheduling construction projects based on discrete-event simulation, taking into account the allowable workspce conflicts and their effects on the operation of activities.In this research, taking into account the effect of each interference on the productivity and safety of running activities, workspace conflicts are categorized in a new way, allowable and forbidden, and then for allowable conflicts, The effect of each interference in two dimensions of safety and productivity has been measured and implemented in scheduling by reducing the rate of productivity on interfering activities. As a result, the schedule is more realistic and the ability to select the appropriate schedule for the project is possible.
