结构动力模型试验与原型相似关系的研究

Research on the Similarity Relationship Between Structural Dynamic Model Test and Prototype

本文以某钢框架结构拟动力模型试验为例,运用大型有限元分析软件SAP2000分别对原型结构和模型进行了地震作用下的动力响应分析。由模型的地震反应按照动力相似关系推导出原型结构的地震反应,并将其与原型结构的计算值进行对比。通过对自振特性、加速度、位移和剪力的对比分析,验证模型与原型的相似关系,说明可以利用模型试验对原型结构进行抗震性能评估。

A steel framed structure model was designed andtested on the pseudo - dynamic test, the seismic dynamic responseanalysis for prototype and model structure was done bySAP2000. According to the structure model of pseudo - dynamictest results, the seismic response of the prototype structure isdeduced according to the dynamic similarity, and compared withthe actual value of the prototype structure, by comparing and analyzingthe self vibration frequency, acceleration, displacementand base shear, the similarity relationship between model andthe prototype were verified. The results show that pseudodynamicmodel test can evaluate the seismic performance of the prototypestructure.