Optimization of Prefabricated Component Site Layout for Prefabricated Building Construction
In order to address the lacking of systemic planning for supplying and layout of prefabrica-ted components at the construction site,a reversed optimization method is proposed based on the ana-lyses of the coordinated laws of hook movement and jib rotation during the assembly process of prefab-ricated components.The method can improve the efficiency to optimally locate the stacking location for any specified component.The decentralized multi-yard layout strategy is prompted to reduce the rota-tion angle of tower cranes by increasing the number of stackyards.Furthermore,the reversed optimiza-tion method is adopted to obtain the best layout scheme to maximize the hoisting efficiency.The novel method is applied to the emulational case and practical engineering case for a testification.It is found that the reversed optimization method effectively improved the solving efficiency.The total hoisting time of standard layer was reduced 14.6%compared to the centralized stackyard arrangement by adop-ting the decentralized multi-yard strategy.And the novel strategy can promote the synergistic between on-site assembly and delivery schedule for prefabricated component.