A BDD-based method for the importance analysis of construction safety accident

For the importance analysis of complex construction accident effectively and accurately, a BDD(ordered binary decision diagram)-based fault tree quantitative analysis method is proposed in this paper. After establishing the fault tree of safety accident, this method turns the fault tree into a BDD structure and computes the importance of basic events. For the convenient storage of BDD in computer, it can be easily implemented and efficiently calculate the importance values. Experimental results show that quantitative analysis conclusions based on BDD are consistent with qualitative analysis of the fault tree and provide importance values.