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1 试验研究的目的和意义根据<核电站通用设计准则>的有关要求,在遭受地震等自然灾害时,对安全重要的核电站系统、结构和部件,须不丧失其完成安全功能的能力.要求在一般情况下不停止生产,在极特殊情况下不应发生核扩散事故.反应堆内部构件(简称堆内构件)是核电站核安全一级和抗震Ⅰ类的核岛主设备之一,它的梁型、板型、壳型部件间有多处间隙、非线性弹簧、非对称约束,是一个复杂的结构系统.我国首次自行设计建造核电工程,缺乏资料和经验.为此,除计算分析外,有必要进行试验
1 The purpose and significance of the pilot study According to the requirements of the General Design Guidelines for Nuclear Power Stations, in the event of natural disasters such as earthquakes, the safety-critical nuclear power plant systems, structures and components must not lose their ability to complete safety functions. In the case of non-stop production, nuclear proliferation accidents should not occur under very special circumstances. The internal components of the reactor (referred to as internal reactor components) are one of the nuclear island primary equipments for nuclear power plant safety level 1 and seismic type I, and its beam type, There are multiple gaps, nonlinear springs, and asymmetrical constraints between plate and shell parts. It is a complex structural system. China’s first nuclear power project was designed and constructed by itself, and it lacks data and experience. Therefore, in addition to calculation and analysis, it is necessary to experimenting