乏燃料组件抓具混合双摆模型及地震响应分析  

Hybrid Double Pendulum Model of Spent Fuel Assembly Grip and Seismic Response Analysis

作　　者：袁占航 刘升 周洋 Yuan Zhanhang;Liu Sheng;Zhou Yang(China Nuclear Power Engineering Co.Ltd.,Beijing,100840,China;China State Shipbuilding Corporation Limited,Beijing,100097,China)

机构地区：[1]中国核电工程有限公司,北京100840 [2]中国船舶集团有限公司,北京100097

出　　处：《核动力工程》2020年第1期59-64,共6页Nuclear Power Engineering

摘　　要：核动力厂对乏燃料组件抓具提出了抗安全停堆地震(SSE)的要求,而抓取过程的地震响应是评价其安全性的重要依据。为精确分析抓取过程的地震响应,根据乏燃料组件抓具的结构和工作方式,建立乏燃料组件抓具工作状态的混合双摆模型,推导其运动微分方程,采用Runge-Kutta法求解其在地震载荷作用下的响应,根据动力学理论进一步求得钢丝绳和抓具上的动态载荷,并对结果进行分析。此方法为类似结构的精确抗震设计、综合评定提供参考。Nuclear power plants requires the spent fuel assembly grippers to be able to withstand safety shutdown earthquake(SSE), and seismic response of grabbing process is the important basis for evaluating its safety. To analyze the seismic response of grabbing process accurately, according to the structure and working process of the spent fuel assembly gripper, the mixed-double-pendulum model of the spent fuel assembly gripper was established, and the differential equation of motion was derived. The Runge-Kutta method is used to solve the response of the gripper under seismic load. The dynamic loads on the wire rope and gripper are further obtained according to the dynamic theory, and the results are analyzed. This method offers reference for the accurate seismic design and comprehensive evaluation of the similar structure.

关 键 词：乏燃料组件抓具 混合双摆 地震响应 

分 类 号：TL352[核科学技术—核技术及应用]