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针对目前地下结构抗震性能振动台试验中的结构、土相似关系选择问题,以某长输埋地管道为对象,根据结构动力学原理和相似理论,采用量纲分析法重现推导模型试验的动力相似关系对其进行模型设计,对原型和不同相似比的管、土模型进行了研究其抗震性能的数值试验,并分析了不同工况下土体-长输埋地管道系统的地震响应;由模型结果按照相似关系推出原型的动力响应后,与原型数值试验结果进行了比较;进而深入研究了模型与原型的相似关系,提出了长输埋地管道抗震性能振动台模型试验相似关系的建议,为即将开展的长输埋地管道振动台试验奠定了基础。
Aiming at the selection of similar structure and soil similarity in the shaking table test of the seismic performance of underground structures, taking a long-distance buried pipeline as an object, according to the principle of structural dynamics and the similarity theory, the power of the model test is reproduced by the dimensional analysis method The similarity of the model design, the prototype and different similar ratio of pipe, soil model to conduct a numerical test of its seismic performance, and under different conditions of soil - long buried pipeline system seismic response; by The results of the model are compared with those of the prototype after the dynamic response of the model is deduced according to the similarity relation. The similarity between the model and the prototype is further studied, and the suggestion of the similarity relation of the shaking table model test for the seismic performance of long- It laid the foundation for the upcoming long-distance buried pipeline vibrating table test.