土坝的地震易损性和震害速评

搜集了我国近年来几次大地震时处于５～１０度地震区内的１８０座水库土坝的震害资料,经分析后把影响震害的因素定为坝高、“水深比”、地基条件、地震烈度;震害等级取为“严重”、“较重”、“轻微”、“完好”。分别给出了适用于地震危害性评估时表示土坝地震易损性的震害概率矩阵,和适用于用确定性方法快速评估震害等级的表达式。最后给出了某土坝用两种方法进行震害评估的例子．

VULNERABILITY AND EVALUATION OF SEISMIC DAMAGE FOR EARTH DAMS

We collected the seismic damage informations of 180 damaged earth dams situated in 5-10 degree area of seismic intensity during the large earthquakes in recent years in China, and took the dam height, the water deep ratio, the base condition and the Seismic intensity as the influence factors controling the damage catalogues, and diuided the damage category in"serious", "rather serious", "lightly" and "intact". We gave the damage probabilostic matrix suitable for the damage evaluation using the probabilistic seismic risk method and the empiric expressions of damage category evaluation suite able for using the deterministic method by means of linear regression. End, we give out a example of damage evaluation using the two methods.