抽水蓄能电站地下厂房机墩结构刚度分析与设计优化  

Rigidity analysis and dynamic design of supporting structure of underground powerhouse in pumped-storage projects

作　　者：陈婧[1] 马震岳[1] 赵凤遥[2] 周长兴[3] 杜建刚[3] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024 [2]郑州大学水利与环境学院,河南郑州450001 [3]北京国电水利电力工程有限公司,北京100024

出　　处：《武汉大学学报（工学版）》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)

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.

关 键 词：抽水蓄能电站 地下厂房 机墩 刚度 

分 类 号：TV312[水利工程—水工结构工程] TV731