支架式球形储罐子结构简化模型

摘要

近些年，地震的发生频率呈现上升趋势，而抗震研究的重要性也日益提高。作为新兴的抗震试验方法——子结构振动台试验方法，也日趋被人们所重视。采用4种方法对支架式球形储罐进行模态分析，得到合理的简化全模型。在全模型基础上进行子结构简化模型划分求解，对比分析出从结构下两层处划分结构为最合理的子结构简化模型形式。在支架式储罐子结构研究中，把下两层支架部分作为试验子结构，将整体划分成双质点体系进行后续抗震性能试验研究。%In recent years, the frequency that the earthquakes occur shows a tendency of raising, and the importance of the seismic method is increasing gradually. As a new seismic experiment method, substructure shaking table experiment method becomes attention by people increasingly. This paper takes four methods to carry out the modal analysis of the framed spherical storage tank and get a reasonable simplified model. By deciding and solving the simplified model of the substructure on the basis of the whole model,it came to the con-clusion that most reasonable simplified model form of substructure is that dividing the structure from the two layers of the structure. In the research of the substructure about the framed spherical tank, treat the two layers of the structure as test substructure, and the whole struc-ture regard as two particle system experiments were carried out to study the seismic perfor-mance of the following.