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现有土石坝震害评估方法大多是针对单一土石坝的单体评估方法,在进行评估工作时需要逐一进行计算,并且要求土石坝具有较为详细的资料,因此,造成评估效率低下,对资料不全的土石坝不能进行快速评估。通过对汶川、唐山、通海地震中土石坝破坏比的分析,发现不同程度破坏比随烈度变化的规律比较明显,并给出了不同程度破坏比的经验取值范围,最后,提出了基于破坏比的土石坝群体评估模型,并采用海城地震土石坝震害实例对该模型进行验证,结果表明评估精度较高,克服了单体评估方法的不足。
Most of the existing earth-rock dam damage assessment methods are single-site assessment methods for single earth-rockfill dams, which need to be calculated one by one in the assessment work and require more detailed information of the earth-rock dams. As a result, the assessment efficiency is low and the data incomplete Earth dam can not be quickly assessed. By analyzing the failure ratio of earth-rockfill dam in Wenchuan, Tangshan and Tonghai earthquakes, it is found that the law of different damage ratio changes with the intensity is obvious, and the range of experience value of different damage ratios is given. Finally, This model is validated by the earthquake damage example of earth-rock dam in Haicheng earthquake. The results show that the model has high evaluation accuracy and overcomes the shortcomings of the monomer assessment method.