竖向荷载对排架结构自振周期的影响

Influence of the vertical loads and eccentricity on the bent frame’s natural period of vibration

利用Ｈａｍｉｌｔｏｎ原理，推导了排架结构柱的几何刚度，分析和讨论了竖向荷载及偏心距对结构自振周期的影响，给出了设计用的结构自振周期修正方法．

Based on the Hamilton principle,the geometric stiffness of column of bent frame is defined.The influence of the vertical loads and eccentricity on the bent frame’s natural period of vibration are analysed and discussed.A method for correcting the natural period of vibration of bent frame in designing is given.