Seismic performance analysis of suspended storage structure in lead-based reactor considering the coupled effects of liquid sloshing and soil condition

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Design Pub Date : 2025-02-20 DOI:10.1016/j.nucengdes.2025.113935

Yin Xunqiang, Chen Xu, Xu Shutong

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引用次数: 0

Abstract

LEAd-based Reactor (LEAR) has good inherent safety, potentially making it the first commercial application of the fourth-generation nuclear power system. Facing the complex inland seismic geological environment, the sloshing of liquid heavy metal coolant with pool layout will significantly influence the seismic performance of suspended storage structure. To improve the seismic safety of the LEAR, a comprehensive study of the effect of liquid sloshing and soil conditions was discussed by combining the Compact Viscoelastic (CV) element for soil-structure interaction analysis, fluid–structure interaction for sloshing analysis and refined simulation of suspended storage structure within the framework of finite elements. And then, the verification example of cylindrical liquid storage vessel was presented to demonstrate the accuracy and efficiency of the proposed fluid–structure interaction model. Finally, the analysis of displacement, acceleration, maximum interlayer displacement angles, and other dynamic responses are carried out to study the effect of liquid sloshing features and soil conditions. The results showed that the properties of the coolant and internal components affect the response of the suspended storage structure, and the soft soil significantly increases the sloshing wave height of the internal fluid, while the overall displacement patterns and amplitude variations are relatively modest. The findings of this study may provide theoretical support and technical foundation for seismic safety evaluation and optimization design of LEAR suspended storage structure under the complex soil site.

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来源期刊

Nuclear Engineering and Design 工程技术-核科学技术

CiteScore

3.40

自引率

11.80%

发文量

377

审稿时长

5 months

期刊介绍： Nuclear Engineering and Design covers the wide range of disciplines involved in the engineering, design, safety and construction of nuclear fission reactors. The Editors welcome papers both on applied and innovative aspects and developments in nuclear science and technology. Fundamentals of Reactor Design include: • Thermal-Hydraulics and Core Physics • Safety Analysis, Risk Assessment (PSA) • Structural and Mechanical Engineering • Materials Science • Fuel Behavior and Design • Structural Plant Design • Engineering of Reactor Components • Experiments Aspects beyond fundamentals of Reactor Design covered: • Accident Mitigation Measures • Reactor Control Systems • Licensing Issues • Safeguard Engineering • Economy of Plants • Reprocessing / Waste Disposal • Applications of Nuclear Energy • Maintenance • Decommissioning Papers on new reactor ideas and developments (Generation IV reactors) such as inherently safe modular HTRs, High Performance LWRs/HWRs and LMFBs/GFR will be considered; Actinide Burners, Accelerator Driven Systems, Energy Amplifiers and other special designs of power and research reactors and their applications are also encouraged.