Predicting the structural response efficiently and quickly is a major focus in civil engineering. For concrete dams, due to the structure’s complexity, it is difficult to obtain the structural performance timely through a large number of calculations. In this paper, the relationship between structural responses and seismic intensity mesures (IMs) is established under the framework of endurance time analysis method (ETAM) with its good accuracy and high efficiency. Baihetan arch dam is selected as a case study, and the dam-reservoir-foundation system is excited under fourteen sets of endurance time acceleration functions (ETAFs) which are generated through the response spectra of ground motion records. The results show that, compared with displacement-dependent damage indices (DIs), damage-dependent DIs can better reflect damage characteristics of the arch dam under different damage levels. Among the ETA-related IMs, the combined spectral acceleration is the most practical and proficient, followed by acceleration spectral intensity (ASI) and effective peak acceleration (EPA). For high arch dam, the influence of the higher order modes should be fully taken into account when establishing the correlation between the structural response and the IMs. The sufficiency of IMs based on structural response should also be fully demonstrated.

高效，快速地预测结构响应是土木工程的主要重点。对于混凝土大坝，由于结构的复杂性，很难通过大量的计算来及时获得结构性能。本文在耐久性时间分析方法（ETAM）的框架下，建立了结构响应与地震烈度测量值（IMs）之间的关系，该方法具有较好的精度和较高的效率。以白鹤滩拱坝为例，通过地震动记录的响应谱生成了十四组续航时间加速度函数（ETAF），对大坝-水库-地基体系进行了激励。结果表明，与位移相关损伤指数（DI）相比，与损伤有关的DI可以更好地反映不同损伤等级下拱坝的损伤特征。在与ETA有关的IM中，组合的频谱加速度是最实际和最熟练的，其次是加速度频谱强度（ASI）和有效峰值加速度（EPA）。对于高拱坝，在建立结构响应与IM之间的相关性时，应充分考虑高阶模态的影响。基于结构响应的IM的充分性也应得到充分证明。建立结构响应与IM之间的相关性时，应充分考虑高阶模态的影响。基于结构响应的IM的充分性也应得到充分证明。建立结构响应与IM之间的相关性时，应充分考虑高阶模态的影响。基于结构响应的IM的充分性也应得到充分证明。