关键词: 桥梁工程, 拱架法施工, 评估指标, 风险分析, 混凝土拱桥

Abstract: Referring to principles and ideas of Highway Bridge and Tunnel Engineering Safety Risk Assessment Guide, the arch construction evaluation index system was established for the first time, and the special risks for 3 completed concrete arch bridges were evaluated based on the rick matrix method. The 3 bridges applied the arch construction method and upper span reinforced concrete structure with different spans. The results show that regulatory risk assessment often involves low level of risk assessment. The smaller the span is, the lower the risk level is. The local project evaluation index (B ~ H) can be reduced a level according to the actual reference, and the risk countermeasures against the risk source of arch construction technology are put forward.

Key words: bridge engineering, arch construction, evaluation index, risk analysis, concrete arch bridge