THE WORKFLOW PLANNING OF CONSTRUCTION SITES USING WHALE OPTIMIZATION ALGORITHM (WOA)
The interaction of the workspaces required for resources and sub contractors with the evolving of construction components and also the limited available spaces of worksite lead to time space conflicts. Alongside, Lack of coverage of workspace information in the classical scheduling techniques make workflow planning actually unrealistic and impractical. To help resolve the conflicts at the lowest time and cost, the tools and processes of Building Information Modeling (BIM) and optimization algorithms seem essential. Methods: In this investigation, the workspaces were created based on the analysis and shaping of construction resources and building elements. Then, the spatial conflicts between workspaces were identifies visually in a time based simulation tool. Finally Wale optimization algorithm (WOA) was implemented for optimizing the outputs variable such as time, cost and workspace simultaneously. The main objective of this research was to implement the integration of visual simulation modelling and optimization algorithm for planning of workspace conflicts. The implementation of the research on the case study showed that the project's cost and time as well as the number of spatial conflicts decreased dramatically in relation to normal and initial schedule. Also, the 2D trend line of the obtained solution demonstrated that the number of the workspace conflicts decreased as the project's cost increased. In fact, the visual and numerical techniques were combined to make a basis platform for workflow planning of construction resources and working teams in project sites. This system enables planners to completely understand the number and amounts of conflicts in each days of project, which is impossible without that circumstances.