In addition, the applicability of the widely used massless foundation approach to the dam-foundation interaction analysis is discussed.

此外还讨论了工程中广泛应用的无质量地基模型对于相互作用分析的适用性问题。

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In different phases of the earthquake process, effects of the dynamic dam-foundation interaction are different. The interaction is rather prominent in the main shock phase.

坝体-坝基动力相互作用在地震过程中的不同阶段表现有所不同，主震阶段的相互作用显著。

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In this paper, complex modal analysis for dam-foundation interaction problem in time domain is presented, and effects of dam-foundation interaction on modal characteristics of the dam are discussed.

本文提出在时域内分析水坝与地基动力相互作用问题的复模态分析方法，讨论了水坝与地基动力相互作用对水坝模态特性的影响。

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