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Reduction coefficient investigation of strong ground surface impact load models considering energy loss
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Guobo WANG1, Hua MEI1, Yao YIN1, Jianning WANG2, Wei HE3, Yuxin ZHAI4
Journal of Vibration Engineering | 2025, 38(5) : 909 - 918
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Journal of Vibration Engineering | 2025, 38(5): 909-918
Reduction coefficient investigation of strong ground surface impact load models considering energy loss
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Guobo WANG1, Hua MEI1, Yao YIN1, Jianning WANG2, Wei HE3, Yuxin ZHAI4
Affiliations
  • 1.College of Civil Engineering and Architecture，Wenzhou University，Wenzhou 325035，China
  • 2.China National Machinery Industry Co.，Ltd.，Beijing 100080，China
  • 3.Faculty of Engineering，China University of Geosciences，Wuhan 430074，China
  • 4.China Railway Construction Group Co.，Ltd.，Beijing 100072，China
Published: 2025-05-10 doi: 10.16385/j.cnki.issn.1004-4523.2025.05.003
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The strong surface impact loads caused by dynamic compaction and construction operations have significant implications on the surrounding environment. Traditional research methods often simplify the impact load as a triangular load for calculation. However, this simplification does not consider the energy loss during impact, leading to overestimation in the calculation results. This paper is based on the measured data from an actual dynamic compaction project. After validating the numerical method’s feasibility, a parametric analysis of key influencing factors is conducted. The paper proposes a reasonable reduction coefficient to modify the current triangular loading model. The objective is to improve the accuracy and applicability of the model for dynamic compaction projects. The calculation results indicate that the magnitude of impact energy and the soil parameters of the site are critical factors influencing the impact vibration response. It is suggested that for impact energy levels categorized as low, medium, and high, the reduction coefficients for medium-soft soil can be set as 0.85, 0.6 and 0.5, respectively. For medium-hard soil, the reduction coefficients can be set as 0.9, 0.7 and 0.6 for the corresponding low, medium, and high energy levels.

reduction coefficient  /  dynamic compaction  /  impact load model  /  impact energy  /  buried pipeline
Guobo WANG, Hua MEI, Yao YIN, Jianning WANG, Wei HE, Yuxin ZHAI. Reduction coefficient investigation of strong ground surface impact load models considering energy loss[J]. Journal of Vibration Engineering, 2025 , 38 (5) : 909 -918 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.05.003
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2025.05.003
  • Receive Date：2023-08-05
  • Online Date：2026-02-12
  • Published：2025-05-10
Article Data
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History
  • Received：2023-08-05
  • Revised：2023-09-18
Funding
Affiliations
    1.College of Civil Engineering and Architecture，Wenzhou University，Wenzhou 325035，China
    2.China National Machinery Industry Co.，Ltd.，Beijing 100080，China
    3.Faculty of Engineering，China University of Geosciences，Wuhan 430074，China
    4.China Railway Construction Group Co.，Ltd.，Beijing 100072，China
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https://castjournals.cast.org.cn/joweb/zdgcxb/EN/10.16385/j.cnki.issn.1004-4523.2025.05.003
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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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