关键词: 混凝土拱坝, 故障树法, 离散系数法, 相关性分析, 质量风险

Abstract: Small and medium-sized water conservancy projects are prone to quality problems or accidents in construction due to short construction period, relatively weak technical strength and other objective factors. Special attention should be paid to the construction quality of arch dams and other hydraulic structures with great impact on public safety and high technical requirements. In this paper, the fault tree method is used to sort out the types of quality accidents of concrete arch dams. By means of literature measurement and expert consultation, the construction risks in various quality accidents of small and medium-sized arch dams are analyzed, and the initial construction quality risk indexes of concrete arch dams are identified. Then the system of quality risk evaluation indexes is studied by expert opinions screening and correlation analysis, and the construction quality risks and evaluation indexes are advanced systematically for small and medium-sized concrete arch dams, which provides basis for supervision of construction quality.

Key words: concrete arch dam, fault tree analysis, discrete coefficient method, correlation analysis, quality risk