A Study of Risk in Concrete-formwork Supporting Projects Based on WBS-RBS and AHP.

Risk analysis is carried out for formwork supporting projects to provide objective reference for managers to understand and control corresponding risks. The WBS-RBS method is used to identify risk factors that may emerge during the construction work. The weight index of each risk is determined based on AHP method. Then, the importance of risk factors is evaluated according to the risk degree theory. The results show that the total risks related to formwork erection and concrete pouring in the basic work package is relatively high, which should draw more attention. The management strategies should be strengthened to formulate emergency plans. Three risk factors including short demolition time, human error, and incorrect casting sequence during the construction work are more important than others. Focuses should be placed on strengthening prevention measures. Effective risk analysis method can help managers to identify the key risk factors and put forward corresponding measures to reduce the occurrence of safety accidents. [ABSTRACT FROM AUTHOR]