论文部分内容阅读
本文主要论述试验模态分析技术在建筑结构模型动态参数识别中的应用。首先叙述了结构模态参数识别的理论依据和试验数据分析方法,指出为提高数据的求解精度在数据处理过程中应采取的一些措施,例如,窗函数的选择;在锤击法中为了选择适当的力锤而对力锤作的谱分析等。然后通过具体实例说明以测试数据为基础,以传递函数拟合为基本特征的试验模态分析技术,在高层建筑、整体预应力板柱等不同结构类型的模型参数识别中的应用;同时还扼要地介绍了对不同结构类型的模型所采用的几种不同的试验方法和结果。
This paper mainly discusses the application of experimental modal analysis technology in dynamic parameter identification of building structure model. Firstly, the theoretical basis for the identification of structural modal parameters and the analysis method of experimental data are described. Some measures that should be taken to improve the accuracy of the data processing in data processing, such as the selection of window functions, are selected in the hammering method. Hammer and spectrum analysis of hammers. Then the application of experimental modal analysis technology based on test data, using transfer function fitting as basic feature, and model parameters identification for different types of structures, such as high-rise buildings and integral prestressed slabs, will be explained through specific examples. The introduction of several different test methods and results for different structural types of models.