结构动力模型试验的相似技巧

Similarity technique for dynamic structural model test

通过多年模型试验的实践与体会 ,提出了结构动力模型试验与动力模型破坏试验中保持模型与原型相似的 3种基本要求与处理技巧 .同时指出 ,对结构动力特性 ,弹性振动响应与破坏形态等试验目的不同 ,相似要求也有所差别 .掌握这一技术 ,可以通过模型试验加深对结构动力特性和破坏形态的认识 ,获得更多有用的信息 ;特别对复杂的土工建筑物动力模型破坏试验的相似问题 。

Based on the long time practice and the authors′ experience, three basic types of similarity relationship between the prototype and the model for dynamic structural model test and dynamic rupture model test have been proposed. The situation where various similarity relationship is applicable and the technique to ensure similarity for the different goal (to study dynamic behavior, elastic response or damage pattern) is discussed. Well knowing the similarity technique from the test results, one can obtain more useful information concerning the dynamic behavior and the damage pattern of the real structure. Some new idea to keep the similarity of the embankment structures are introduced.