双塔式直流电压发生器抗震性能分析

通过有限元软件对某双塔式直流电压发生器进行抗震响应计算,分析结构在地震作用、自重和风荷载组合作用下,结构关键构件或部件在保护电阻轴向x方向的受力性能,以及在另一水平方向z方向的受力性能,得到按抗震设防标准水平加速度,最大加速度峰值按0.3g和竖向加速度最大加速度峰值0.15g设防是偏于安全的;保护电阻轴向x方向上虽双塔式直流电压发生器整体性较好,但因x方向上是整体结构的自振频率下的响应,而z向是各个子系统的自振频率下的响应,所以会导致x方向上结构重要构件或部件的反应反而比z方向的大。

ANALYSIS ON SEISMIC PERFORMANCE OF TWIN TOWERS DC VOLTAGE GENERATOR

Finite element software was used to calculate the seismic response of a twin towers type DC voltage generator in the paper.The mechanical performance of the key component in the structure on protecting the resistances in axial X and horizontal Z directions was analyzed under the combination action of earthquake,gravity and wind load.Then,it was concluded that it was safe based on the seismic fortification criterion (0.3g-maximal acceleration value and 0.15g-vertical peak acceleration).Although the entirety of twin towers DC voltage generator overall in axial direction X was better,but that of X direction was the frequency response of the whole structure while that of Z direction was the self-vibration frequency response of each subsystem,so it could lead to that the response of important components in X direction structure was than more serious than that of Z direction.