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Test study on floor response spectra of the isolation system for high-temperature gas-cooled reactor buildings
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Zhongyi ZHOU1, 2, Zhifei REN1, 2, Chenglin WAN1, 2, Haopeng ZUO1, 2, Zhiling XU3, Tao WANG1, 2
Earthquake Engineering and Engineering Dynamics | 2025, 45(4) : 21 - 29
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Earthquake Engineering and Engineering Dynamics | 2025, 45(4): 21-29
Test study on floor response spectra of the isolation system for high-temperature gas-cooled reactor buildings
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Zhongyi ZHOU1, 2, Zhifei REN1, 2, Chenglin WAN1, 2, Haopeng ZUO1, 2, Zhiling XU3, Tao WANG1, 2
Affiliations
  • 1.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
  • 2.Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, China
  • 3.CITIC Architectural Design & Research Institute Co., Ltd., Wuhan 430014, China
Published: 2025-08-22 doi: 10.13197/j.eeed.2025.0403
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The reactor building is a vital part of the nuclear island. Its floor response spectrum is essential for the design of internal equipment, such as the reactor pressure vessel and steam generator. To study the variation of the floor response spectrum of seismic isolation structures under different seismic inputs, a shaking table test was conducted on a nuclear reactor building model with a geometric similarity ratio of 1∶20. Three sets of seismic motions were generated based on NRC Reg. Guide 1.6. These included unidirectional (X-direction), bidirectional (X+Y directions), and triaxial (X+Y+Z directions) motions. Accelerometers were used to measure the floor responses under each condition, allowing for the analysis of response spectra for key floors. The results indicate that seismic isolation structures have two main peak points in the floor response spectrum, located near the first and second natural frequencies. The first frequency exhibits a lag, while the second frequency has a lead. There is a coupling effect between seismic motions in different directions. Near the first frequency, this coupling reduces the peak response of the upper structure’s floor spectrum. In contrast, near the second frequency, the interaction between vertical and horizontal seismic motions sharply amplifies the response, and this effect increases with height.

reactor building  /  isolation design  /  seismic motion  /  floor response spectrum  /  coupling effect
Zhongyi ZHOU, Zhifei REN, Chenglin WAN, Haopeng ZUO, Zhiling XU, Tao WANG. Test study on floor response spectra of the isolation system for high-temperature gas-cooled reactor buildings[J]. Earthquake Engineering and Engineering Dynamics, 2025 , 45 (4) : 21 -29 . DOI: 10.13197/j.eeed.2025.0403
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Year 2025 volume 45 Issue 4
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Article Info
doi: 10.13197/j.eeed.2025.0403
  • Receive Date：2024-05-07
  • Online Date：2026-03-20
  • Published：2025-08-22
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History
  • Received：2024-05-07
  • Revised：2024-10-08
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Affiliations
    1.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
    2.Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, China
    3.CITIC Architectural Design & Research Institute Co., Ltd., Wuhan 430014, China
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https://castjournals.cast.org.cn/joweb/dzgcygczd/EN/10.13197/j.eeed.2025.0403
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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