材料参数对输电杆塔基桩轴向振动的影响探讨

Discussion on Effects of Material Parameters on Axial Vibration of Transmission Tower Pile Foundation

用复模态方法求解了输电杆塔基桩轴向振动的线性偏微分方程.得到了一端固定、另一端自由的线性粘弹性基桩轴向自由振动的振动模态和固有频率的精确解,并进行了算例分析,考察了材料参数的影响,对于输电杆塔桩基础的抗风、抗震设计有一定的指导意义.

Complex-modal analysis method is used to solve the linear partial differential equation governing axial vibration of transmission tower pile foundation. The axial free vibration of linear viscoelastic piles with one fixed end and other free end is analyzed; and the exact solutions of the vibration modal and natural frequency have been obtained. Numerical examples are given; and the effects of material parameters have been considered; the results have some sense for guiding wind resistance and earthquake-resistance design of transmission tower pile foundation.