摘要
采用自由振动法对汽机房屋面网架的动力特性进行实测,并用子空间迭代法对其动力特性进行了计算。根据实测和计算结果,对汽机房屋面网架的动力性能进行了分析
Based on the test results of space truss of turbine roof under roof fans operation.The amplitute of stress and the fatigue behaviour of space truss members,and the amplitute of deflection of space truss are analysed herein.