相邻机器基础动力相互作用研究

Research on Dynamic Interaction between Adnjacent Machine Foundations

将相邻基础作为一个整体,把土与基础视作一弹性共同作用体系,用大型结构分析软件对相邻机器基础进行了数值仿真模拟。分析了双台基础在水平荷载、垂直荷载以及水平摇摆荷载作用下,距离变化时的动力反应,并与单台基础时相应的荷载作用下的动力反应进行了对比;计算了双台机器正常运行,但有一个固定相位差时的动力反应,总结了相邻基础之间的相互动力影响规律。

The adjacent foundation can be considered as an integration, the soil and adjacent foundations are regarded as an elastic integrated system. The large-sized structure analysis software is used to carry out the numerical simulation of the adjacent machine foundations. The dynamic reaction of two machine foundations under the action of level loading, vertical loading and level shaking loading is analyzed when the distance changes; and also, comparison is made with the dynamic reaction in the case of the corresponding loading when there is the single-unit machine foundation. At last, the dynamic reaction of two machines in normal operation but with a fixed phase difference is calculated;and the laws of inter dynamic influences of the adjacent foundations are summarized, thus, having a certain reference significance for actual engineering works.