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Analysis of Vibration Characteristics of Powerhouse Structure Under Pressure Pulsation Excitation of Vertical Axial Flow Pump
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Jian-kang WANG1, Qi JIANG2, Yu ZHAO1, 2, Jian-wei ZHANG2, Xi-zhu LIU3
Water Resources and Power | 2025, 43(9) : 161 - 165
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Water Resources and Power | 2025, 43(9): 161-165
Analysis of Vibration Characteristics of Powerhouse Structure Under Pressure Pulsation Excitation of Vertical Axial Flow Pump
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Jian-kang WANG1, Qi JIANG2, Yu ZHAO1, 2, Jian-wei ZHANG2, Xi-zhu LIU3
Affiliations
  • 1.School of Civil Engineering and Transportation, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
  • 2.School of Water Resources, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
  • 3.Jinan Key Laboratory of Digital Twin and Smart Water Resources, Shandong Provincial Water Resources Survey and Design Institute Co., Ltd., Jinan 250013, China
Published: 2025-09-25 doi: 10.20040/j.cnki.1000-7709.2025.20241820
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In order to explore the influence of pressure pulsation of the pumping unit on the powerhouse structure, the powerhouse of Dayuzhang pumping station was taken for an example. Based on the prototype observation data, the vibration source composition and vibration characteristics of powerhouse structure were analyzed using three-dimensional finite element simulation. The safety of the structure was analyzed and evaluated from the perspective of structural resonance check and vibration response. The results show that the hydraulic pulsation caused by RSI and the rotational frequency excitation caused by the operation of the unit have the greatest impact on the vibration of powerhouse under the stable operation condition of the unit, and the natural frequency of the local floor structure has a small degree of coincidence, which is easy to resonate. However, from the perspective of vibration response, the vibration response of each local part is within the allowable range, the outlet elbow and pump seat are the largest, and the pump floor slab is the smallest. This study has important theoretical value and practical significance for realizing the long-term and safe operation of the pumping station powerhouse structure.

prototype observations  /  modal analysis  /  resonance review  /  vibration response
Jian-kang WANG, Qi JIANG, Yu ZHAO, Jian-wei ZHANG, Xi-zhu LIU. Analysis of Vibration Characteristics of Powerhouse Structure Under Pressure Pulsation Excitation of Vertical Axial Flow Pump[J]. Water Resources and Power, 2025 , 43 (9) : 161 -165 . DOI: 10.20040/j.cnki.1000-7709.2025.20241820
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Article Info
doi: 10.20040/j.cnki.1000-7709.2025.20241820
  • Receive Date：2024-09-25
  • Online Date：2025-12-15
  • Published：2025-09-25
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  • Received：2024-09-25
  • Revised：2024-11-25
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Affiliations
    1.School of Civil Engineering and Transportation, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
    2.School of Water Resources, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
    3.Jinan Key Laboratory of Digital Twin and Smart Water Resources, Shandong Provincial Water Resources Survey and Design Institute Co., Ltd., Jinan 250013, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2025.20241820
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Citations
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
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
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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