To investigate the dynamic characteristics of the horizontally encrypted column network spring vibration isolated turbine-generator foundation, according to similarity theory, a 10:1 scale model of the horizontally encrypted column network spring vibration isolated turbine-generator foundation, including two condensers, was tested on site, and the dynamic characteristics of the model are analyzed by excitation method, and the natural frequencies, mode shapes and damping ratio of the integral structure are acquired. This study shows that the first two mode shapes of the turbine-generator foundation are translation and torsion, the high mode shape is accompanied by column-end swing and local distortion; the condenser is more stable in the integral structure; the natural frequency of this foundation is higher than the dual-row column spring vibration isolated turbine-generator foundation, and it is significantly lower than rigid foundation, and the mode shape distribution is different from them.

为研究水平加密柱网弹簧隔振汽轮发电机基础的动力特性，根据相似理论，对包括两个凝汽器的水平加密柱网弹簧隔振汽轮发电机基础10:1比例模型进行试验。现场，采用激励法分析模型的动力特性，获取整体结构的固有频率、振型和阻尼比。研究表明，汽轮发电机基础前两种振型为平移和扭转，高振型伴有柱端摆动和局部变形；冷凝器在整体结构上更稳定；