摘要
以我国西龙池高水头抽水蓄能电站地下厂房为计算实例,利用有限单元法建立数值模型,对机墩结构的整体刚度特性进行了分析.探讨了结构计算模型和边界条件的影响,在自振特性计算的基础上进行共振复核.进而就机墩的结构形式和尺寸等对机墩刚度的影响进行了敏感性分析,探讨了提高机墩刚度及其抗振性能的设计途径,并研究了拟静力法和动力法对计算结果的影响规律,得到了明确的结论性认识,可以为大型抽水蓄能电站地下厂房机墩结构的抗振设计提供有益参考.
Xilongchi Pumped-storage Project is one of the highest water-head projects in China. Taking it for example, a numerical simulation model of the powerhouse structure is established. Firstly, the free vibration characteristics analysis and resonance check with generating set＇s exciting resources is made. Then the influences of configuration and dimensions of the supporting structure on its rigidity are analyzed. The measures to heighten the rigidity of the supporting structure and the anti-vibration design method are demonstrated. Finally, the difference of the pseudo-static solution and the dynamic solution is discussed to illustrate the rationality of the analysis methods.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2009年第4期456-460,共5页
Engineering Journal of Wuhan University
基金
国家自然科学基金资助项目(编号:50679009)
辽宁省高等学校科研项目计划资助项目(编号:2008S045)
关键词
抽水蓄能电站
地下厂房
机墩
刚度
pumped-storage project
underground powerhouse
supporting structure
rigidity
