Collaborative planning for stacking and installation of prefabricated building components regarding crane-collision avoidance

Site stacking of the prefabricated building components (PBC) should be planned in coordination with installation schedule and other dynamic constraints to improve the overall construction efficiency. This study explores the collaborative planning for stacking and installation of the PBCs (CPSIP) by avoiding collision of the tower cranes that are in the overlapping area and operated simultaneously with the objective of minimizing the prefabricated construction duration. The CPSIP problem, crane-collision cases, collision-avoiding strategy, and multiphase dynamic optimization strategy are analyzed. Then the optimization model for the CPSIP problem subject to the crane-collision avoiding and other dynamic constraints is proposed, and the binary particle swarm optimization (PSO) algorithm is utilized to solve the optimization model for the CPSIP problem. A case study is presented to demonstrate and justify the developed method for obtaining the CPSIP. This study contributes to the knowledge and methodology for achieving the CPSIP by avoiding crane-collision, thus improving efficiency of the prefabricated construction while promoting safety.