Functionally adaptable isolated structures for small modular reactors based on design demands

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

Nuclear Engineering and Design Pub Date : 2025-04-02 DOI:10.1016/j.nucengdes.2025.114037

Kui Yang , Ping Tan , Jiying Shang , Yafei Zhang , Jiaxi Li

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引用次数: 0

Abstract

Nuclear power plants are gradually trending toward miniaturization and standardization owing to their expensive costs, lengthy design cycles, challenging siting, and hazardous issues. However, this development presents challenges such as reduced site adaptability and weakened seismic capacity. In response to the above challenges, this paper proposes a multifunctional combination-rail tension friction slip isolator (MC-RTFSI). Its application enables small modular reactors (SMRs) to satisfy the requirements of different sites and seismic intensities without the necessity of modifying the design. MC-RTFSI is a composite system comprising different types of sliding rails that exhibit distinct mechanical properties. The selection of suitable rails is based on the specific characteristics of different sites. Furthermore, it exhibits performance decoupling in both orthogonal directions and uplift-restraining properties. Various combinations of MC-RTFSI were mechanically investigated, leading to the construction of a mechanical hysteresis model. This model was subsequently simulated by employing series–parallel combinations of nonlinear units in current finite element analysis software (ETABS, SAP 2000). Based on the result of the refined finite element simulation, the effectiveness of the simulated units is confirmed. A number of nonlinear response history analyses were conducted. The results indicate that novel isolated structures for small-scale nuclear power plants possess the capacity to perform various activities and may be adapted to accommodate different sites and ground motion characteristics.

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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.