单频拍波试验技术研究

Research on Single Frequency Sine-Beat Test

核级设备抗震鉴定试验中,管系安装阀门和驱动装置等采用单频拍波试验代替安全停堆地震(SSE)试验。相关规范中给出了拍波试验的要求输入运动(RIM),对试验响应仅给出了设备重心处的加速度响应要求。美国西屋先进压水反应堆(AP1000)相关文件对拍波波试验的响应提出了更为具体的接受准则。本文中根据AP1000的相关要求,研究了拍波时程的采样频率、每拍中周波数量和拍波数等参数在不同设置时对拍波试验响应结果的影响。通过研究发现,AP1000给出的相关放大系数(CAF)曲线不够精准,并给出了满足AP1000相关要求时的参数设置建议值。

Single frequency sine-beat test is carried out on the line-mounted equipments such as valve and actuator which will be seismic qualified.Required input motion(RIM)of the sine-beat test is given in the related standard,and only the acceleration response is required on the equipment gravity.Detailed requirements for the response of RIM test are given in AP1000 documents.According to the requirements of AP1000,the effect of the parameters of sine beat motion such as sample frequency and cycles/beat is studied in this paper.The conclusion is that the CAF curves in the AP1000 document are inaccurate,and the appropriate parameters satisfying the RIM test requirements of AP1000 are given.