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桩—土—上部结构相互作用的研究已成为抗震工程中的重要课题,但因其相互作用的复杂性,这方面的研究并不成熟,尚需进行深入地探讨和研究。在桩—土共同作用下,就地基对上部结构的影响以及上部结构对地基的影响,这两种不同情况的相似问题进行了研究,给出了振动台模型试验设计的一般步骤。由相似理论得出了桩—土—上部结构在通常情况下的相似关系,并给出了实例分析。研究表明:试验目的不同,考虑的主要影响因素不同,主要相似关系亦不同。
The research on pile-soil-superstructure interaction has become an important issue in aseismic engineering. However, due to the complexity of its interaction, the research in this area is not mature yet, and further study and exploration are needed. Under the joint action of pile and soil, the similar problems of two different situations are studied, and the general steps of shaking table model test design are given in terms of the influence of foundation on superstructure and the influence of superstructure on foundation. The similarities between the pile-soil-superstructure under normal conditions and the case studies are given based on the similar theory. The study shows that: the purpose of the experiment is different, considering the main influencing factors are different, the main similarities are also different.