摘要
采用环境随机振动法对北京首都国际机场AMECO-A380六机位维修机库大跨空间网架结构进行了现场结构动力特性测试。利用谱分析方法对实测数据进行了参数识别和处理,并进行了振型分析,确定了机库屋架结构的自振频率和振型。并用有限元模型计算了结构自振频率和振型。对测试和计算结果进行的分析比较结果表明,结构基本周期的测试值和计算值接近,各自所对应的第1阶振型吻合较好。
The dynamic characteristic of the AMECO-A380 maintenance hangar in Beijing capital airport was field-tested excited by environmental random loads.The test data were analyzed by using the spectrum analysis and the natural frequency and the mode of structure were obtained.Based on a finite element model of the hangar structure,the parameters of structural dynamic characteristic were calculated and compared with the measured values.The analysis shows that the test result of fundamental natural frequency agrees well with the finite element calculation result as well as the first mode shape respectively.
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2010年第2期158-162,共5页
Journal of Vibration,Measurement & Diagnosis
基金
国家科技支撑计划课题资助项目(编号:2006BAJ03B05)
国家杰出青年科学基金资助项目(编号:50725828)
关键词
动力特性
脉动测试
振型分析
大跨空间网架
机库
dynamic characteristic pulsation test mode analysis long-span space truss hangar
