Effect of bi-directional ground motions on the seismic pounding of adjacent NPP structures

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-02-21 DOI:10.1016/j.net.2025.103542

Bidhek Thusa , Duy-Duan Nguyen , Md Samdani Azad , Tae-Hyung Lee

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引用次数: 0

Abstract

This study aims to investigate the structural pounding of two adjacent RCB and AB under bi-directional ground motions. Furthermore, this study also investigates the influence of strong bi-directional ground motions on the seismic response interaction of adjacent RCB and AB. Finite element models (FEM) for both RCB and AB are constructed in SAP2000 using multi-layer shell model (MLSM) with a design level separation (i.e., seismic gap). Two sets of ground motions are utilized to perform time history analyses of the combined RCB and AB, in which each set of motions comprising 10 bi-directional design-based earthquakes (DBEs), and 10 strong bi-directional ground motions ever recorded respectively. Seismic displacement is monitored at the two most susceptible locations of AB and RCB. The observation shows that RCB is prone to experience damage due to seismic impact of adjacent AB under very strong bi-directional ground motions. Additionally, it is noticed that the probability of the occurrence of seismic pounding between adjacent RCB and AB increases significantly when the PGA of strong bi-directional motion is higher than 1.5g. These results emphasize that the current design separation of 5.08 cm gap between adjacent RCB and AB may not be sufficient to prevent seismic impact during strong earthquakes.

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来源期刊

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

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development