主副厂房不同连接形式对GIS室抗震性能的影响  

Seismic Analysis of GIS Chamber for Various Connection Patterns between Main and Auxiliary Powerhouses

作　　者：陈天恩[1] 伍鹤皋[1] 张智敏[1] 傅丹[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《水电能源科学》2015年第8期103-106,共4页Water Resources and Power

基　　金：国家自然科学基金项目(51179141)

摘　　要：厂房结构的抗震安全对于水电站正常稳定运行意义重大。结合某贯流式水电站的工程实例,通过建立包括主、副厂房和基岩在内的厂房坝段整体三维有限元模型,研究了主厂房屋面网架与排架柱不同连接形式、主副厂房间不同连接形式下厂房结构的固有振动特性,并对振源进行了分析和共振校核。采用反应谱分析法分析了该贯流式水电站厂房的抗震性,研究了地震荷载作用下与GIS室相连接的主厂房下游排架柱和副厂房上下游排架柱地震反应的影响规律。结果表明,主厂房屋面网架与排架柱铰接,且主副厂房间整体连接可明显提高副厂房中GIS室的刚度和抗震性能,研究结果可应用于实际工程。The anti-seismic safety of powerhouse structure is very important for the stable operation of hydropower station.Combination with the case of a tubular turbine hydropower station,a three-dimensional finite element model was established for the powerhouse integrity including the main and auxiliary powerhouses and the bedrock.The natural vibration characteristics of the powerhouse were studied under the various connection patterns between the main and auxiliary powerhouse and the different support type of roof slab of the main powerhouse.Meanwhile the vibration source and resonance check were carried out.And then the response spectral analysis was employed to analyze the seismic characteristics of the framed bent of the main powerhouses.The results show that if the main and auxiliary powerhouses are integrally connected,the hinged support type adopted in the roof is advantageous for improving the earthquake-resistance capacity of the GIS chamber in the auxiliary powerhouses.So,the research results can be applied to the practical projects.

关 键 词：水工结构 贯流式水电站 GIS室 连接形式 抗震分析 

分 类 号：TV731[水利工程—水利水电工程]