【摘要】 随着我国核电工程的岩性地基等优良厂址的日益稀缺和内陆核电发展的需要，提高核电结构在非岩性地基条件下的抗震能力成为核电建设的关键问题之一。基于此，研究了倾斜式地下墙对核岛厂房抗震性能的影响。从土-结构相互作用外源波动问题的精细模拟出发，讨论了地下墙的布置形式、材料参数等因素对隔震效果的影响。再以某非岩基条件下的核电结构为例，研究倾斜式地下墙对结构抗震性能的影响。研究表明，提出的倾斜式地下墙的隔震措施具有良好的隔震效果。在水平向，核电结构楼层反应谱峰值降低了超过30%，竖向上也超过了10%。该研究结果可为非岩基条件下核岛结构等重要设施的减隔震能力提供新的思路。更多还原

【Abstract】 The lithologic foundation of nuclear power engineering in China is becoming increasingly scarce, and the development of inland nuclear power has become an inevitable trend. Improving the seismic ability of nuclear power structure on non-lithologic foundation has become one of the key topics in the construction of inland nuclear power plants. Based on the overall simulation analysis of soilstructure interaction with external fluctuations, this paper proposed the construction of an underground partition wall on the ground based on hydraulic curtain technology as an isolation measure, and discussed the effect of reducing the input of seismic wave energy to the superstructure. Firstly, based on the fine simulation of the external wave problem of soil-structure interaction, the effects of layout and material parameters of various underground isolation walls on the isolation effect were compared. Then, the seismic isolation measures are applied to the structural analysis of nuclear power plant, and the influence on the floor spectrum of nuclear power plant was studied. The research results show that the proposed inclined underground wall has good seismic isolation effect and can provide a new way to improve the seismic capability of important buildings such as nuclear island.更多还原