核电站反应堆厂房隔震研究

对核电站典型CPR1000堆型反应堆厂房应用隔震技术进行了系统的研究.针对反应堆底部的圆形筏基,进行了隔震支座的布置与选型.基于时程分析法,研究了核电站基础隔震效果,并建立了结构内部设备层的楼层反应谱.此外,文章研究了地震波加速度峰值、设备层所处标高及设备阻尼比对楼层反应谱的影响.研究结果表明,应用隔震技术后大大提高了核电站反应堆厂房的抗震安全储备.

Study on base-isolated nuclear power plant reactor structure

This paper systematically investigates the application of base-isolated technology on nuclear power plant reactor structure.Considering the circular raft of reactor structure,isolators are optimized and arranged for nuclear power plant reactor structure herein.Time-history analysis of the isolated nuclear power plant reactor structure is carried out and control effectiveness of base isolation of nuclear power plant reactor structure is evaluated.In addition,the floor response spectrum of the internal equipment in nuclear power plant reactor is set up and thus the floor response spectrum of base-isolated structure and base-fixed structure are compared.The effects of seismic intensity,height of the equipment and damping ratio of isolators to the response spectrum are investigated in this paper.Results show that base isolation technology can significandy increase seismic safety reservation.