摘要
乏燃料贮存格架是用于贮存换料后的乏燃料组件的重要设备,其自由放置在核电厂乏燃料水池中,在地震载荷下的响应属于非线性响应,包含了各种复杂的运动:滑移、碰撞、扭转、倾覆等。为了准确描述上述非线性响应,本文建立了乏燃料贮存格架整池有限元模型并进行非线性时程分析,考虑了滑移、碰撞、摩擦等影响因素,同时还考虑了乏燃料贮存格架在水池中的流固耦合效应。通过时程分析得到了乏燃料贮存格架在地震载荷下的位移、载荷等计算结果。该方法可用于乏燃料贮存格架的抗震分析。
Background： Spent fuel racks are important facilities to store the spent fuel which are freestanding in the spent fuel pool. The response of racks to seismic load is highly nonlinear and involves a complex combination of motions： sliding, impact, twisting and turning. Purpose： An analysis method should be built to accurately replicate these nonlinear responses. Methods： The whole pool multi-rack FEA model was developed and time history analysis was performed which contains the consideration of effect of sliding, impact and friction and the fluid structure interaction effect. Results： The analysis results such as displacement and force under seismic loads were obtained. Conclusions： The method can be used to the seismic analysis for spent fuel racks.
出处
《核技术》
CAS
CSCD
北大核心
2013年第4期1-4,共4页
Nuclear Techniques
