Abstract：
As for the construction safety, it is very important to make a thorough study of the source and evolution process of metro construction risks and to clarify the uncertain influence of different risks on construction. Based on the background of the literature investigation, retrieval and analysis, combined with the actual metro construction situation, the index factors are selected from the five aspects of“human, machine, material, system and environment”,and the risk assessment index system is established. The projection pursuit method (PPC) is introduced to calculate and quantify the weights objectively, and a comprehensive assessment of metro construction safety is carried out by constructing a D-S evidence theory based risk assessment model. The proposed model is applied to Qingdao metro line 13 project, by which the impacts of risks are analyzed, the safety levels are classified, and effective improve?ment and avoidance measures are put forward, providing reference for the construction of similar metro projects.
ZHOU Shengshi ZHANG Ning ZHANG Xiaojuan
.Metro Construction Risk Assessment Based on PPC-D-S Evidence Theory[J] MODERN TUNNELLING TECHNOLOGY, 2021,V58(1): 75-83
2021, Vol. 58 