人民黄河2016，Vol.38Issue(3)：103-107,5.DOI:10.3969/j.issn.1000-1379.2016.03.028
高面板坝地震工况坝坡稳定允许安全系数探讨
Discussion on the Allowable Safety Factors of Slope Stability for High Concrete Faced Rockfill Dams Under Seismic Conditions
摘要
Abstract
The allowable safety factors of slope stability for high concrete faced rockfill dams under seismic conditions were studied. Based on the statistical values of nonlinear shear strength parameters for soft and hard rockfills, safety factors and reliability indices of slope stability were computed for different dam heights, earthquake intensities and embankment materials. The relations between safety factors and reliability indices were investigated systematically and the safety factor criteria were discussed. It is concluded that the current safety factor criteria are not suitable for seismic stability assessment of concrete faced rockfill dams which are more than 200 meters high, different allowable safety factors of slope stability should be given for different dam height levels, seismic conditions and embankment materials according to the principle of equivalent reliability. If embankment materials are fresh hard rockfills, the ratio of dam slope proposed by the design code can be adopted, if embankment materials are soft rockfills, the ratio of dam slope should be determined by stability calculation, and the allowable safety factors should be greater than the values required by the current design code.关键词
地震/坝坡稳定/安全系数/可靠度/混凝土面板堆石坝Key words
earthquake/slope stability/safety factor/reliability/concrete faced rockfill dams分类
建筑与水利引用本文复制引用
于建华,吴震宇..高面板坝地震工况坝坡稳定允许安全系数探讨[J].人民黄河,2016,38(3):103-107,5.基金项目
国家自然科学基金资助项目（51109151）。 （）
