抽水蓄能电站厂房结构动力特性研究

针对大型抽水蓄能电站地下厂房结构的动力荷载作用十分复杂,由此产生的厂房结构振动问题十分突出;目前,大型地下厂房结构抗振设计在国内外基本是一片空白等问题,利用模态试验技术对惠州抽水蓄能电站地下厂房结构的动力特性进行了研究,获得了电站厂房结构的基本频率和对应的振型,为地下厂房结构的抗振设计提供了科学依据。

Study on Dynamic Characteristics of Powerhouse Structures in Pumped storage Power Station

The dynamic loads on powerhouse structures in large underground pumped storage power station are of great complexity. Consequently, the vibration problem of powerhouse structures caused by those loads is also prominent. At present, design of large underground powerhouse structures against vibration is rarely available domestically or abroad. In this paper, the dynamic characteristics of powerhouse structures in the underground powerhouse of Huizhou Pumped Storage Power Station are investigated with the modal testing technology. Primary vibration frequencies and the corre- sponding mode shapes of powerhouse structures are obtained, which provides a scientific basis for the design of under- ground powerhouse structures against vibration.