【摘要】 为了研究首都机场四机位维修机库 ,利用脉动法对该结构进行了动力特性测试 .利用谱分析技术对所采集的数据进行了分析 ,得出了该结构的自振频率和模态 .根据实际结构 ,在软件SAP2 0 0 0N的基础上建立了三维有限元模型 ,采用特征向量法 ,得到了该结构的各阶自振频率和模态的理论值 .试验结果与理论计算结果对比表明 ,结构第 1周期相差不到 8% ,模态相似 .更多还原

【Abstract】 The dynamic characteristics of hangar of Capital Airport were tested by means of pulsatile theory for further study. The data were analyzed by using of spectrum analysis method. Frequency and mode of structure are gained. Based on the engineering structure, three dimensional finite element model is set up by SAP2000N software and its characteristics is calculated by eigenvectors method. The difference between test results and calculated results are less than 8 percent and the modes are similar.更多还原