提出了三种计算结构位移比的补充方法，即第一振型法、弹性时程分析法和推算平面端部位移法。
Three additional displacement ratio calculating methods, i. e., the first mode method, elastic time history analysis method and calculating plane end displacement method, are suggested.
本文分析结果表明，在两水平方向上木塔的振动特性存在些微差异，第一振型阻尼比较第二振型阻尼比大。
The results show that the vibration characteristics of the tower in two horizontal directions are slightly distinct, and the damping ratio of the first mode is greater than that of the second mode.
通过动力分析可以发现，结构的第一振型为竖向振动，动力分析结果也满足抗震要求，说明结构形式是合理可行的。
It is found that the first vibration mode is vertical by the dynamic analysis and the structural response are in the al...
研究结果发现，组合共振区域内发生两种不同的拟周期运动和组合周期运动，而且第一振型次谐波共振曲线延伸到组合共振区域。
The results obtained show that several motions may occur in the region of combination resonance, including two kinds of quasi-periodic vibrations and combined periodic motion.
研究结果发现，组合共振区域内发生两种不同的拟周期运动和组合周期运动，而且第一振型次谐波共振曲线延伸到组合共振区域。
The results obtained show that several motions may occur in the region of combination resonance, including two kinds of quasi-periodic vibrations and combined periodic motion.
应用推荐