核电厂管线上设备地震加速度响应放大系数评估方法与应用

Evaluation Method and Application of Seismic Acceleration Response Amplification Factor of Line-Mounted Equipment in Nuclear Power Plants

为了方便快捷地确定核电厂管线上设备的地震载荷,基于弹簧-质量模型、管线与安装于管线上的刚性设备的关系,提出了评估管线对设备的地震加速度响应放大系数的方法,以及该评估方法在确定设备抗震鉴定地震输入方面的应用方法,并通过有限元模型对该评估方法和应用予以了验证。结果表明,该评估方法在确定管线上设备抗震鉴定地震输入方面提供了易于操作又不至于太过保守而降低经济性的可行的应用办法。

In order to fast evaluate the seismic load on line-mounted equipment of nuclear power plant,based on the spring-mass models,and the relationship between the piping and linemounted rigid equipment,a method of obtaining the amplification factor of the seismic acceleration response of equipment and its applications in obtaining seismic input for anti-seismic qualification of equipment are proposed.And furthermore,the method and its applications are verified by using finite element analysis.The result shows this evaluation method provides a feasible application method which is easy to operate without being too conservative and reducing economy in determining the seismic input for anti-seismic qualification of line-mounted equipment.