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Band gap characteristics and vibration isolation performance of combined periodic cross isolation trenches
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Haiyang WANG1, 2, Chunxin ZHAI1, 2, **, Zhu WANG1, 2, Jinhao FENG1, 2, Xiaomao ZHANG3
China Safety Science Journal | 2025, 35(2) : 118 - 126
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China Safety Science Journal | 2025, 35(2): 118-126
• Safety engineering technology •
Band gap characteristics and vibration isolation performance of combined periodic cross isolation trenches
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Haiyang WANG1, 2, Chunxin ZHAI1, 2, **, Zhu WANG1, 2, Jinhao FENG1, 2, Xiaomao ZHANG3
Affiliations
  • 1 National & Local Joint Engineering Laboratory of Traffic Civil Engineering Materials，Chongqing Jiaotong University，Chongqing 400074，China
  • 2 School of Civil Engineering，Chongqing Jiaotong University，Chongqing 400074，China
  • 3 China Railway 18th Bureau Group Co.，Ltd.，Tianjin 300222，China
Published: 2025-02-28 doi: 10.16265/j.cnki.issn1003-3033.2025.02.1216
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In order to effectively control low-frequency vibrations in engineering practice，the structure and the formation mechanism of the band gap were analyzed，and the finite element method was employed to investigate the influencing factor of the band gap in combined periodic cross-isolation trenches. Subsequently，this study analyzed vibration isolation performance using the model experiment. The results show that the band gap characteristics of the combined periodic cross-isolation trenches are mainly influenced by the periodic constant，the depth of the channel，the elastic modulus of soil and the filling medium. With the increase of the period constant，combined periodic cross-isolation trenches are more likely to obtain the low-frequency band gaps，but the bandwidth narrows. By increasing the depth，the low-frequency band gap with a larger bandwidth can be obtained，and the number of band gaps increases. With the increase of elastic modulus，the boundary frequency of the band gap migrates to high frequency synchronously，and a more low-frequency and wider band gap can be obtained by filling the medium. The experimental results show that the maximum attenuation amplitude of acceleration in the band gap range reaches 0.001 24 m/s2，the average amplitude attenuation ratio in the band gap is 0.206 2，and the maximum attenuation degree reaches 98.4%. The combined periodic cross-isolation trenches have remarkable vibration isolation performance.

combination period  /  cross vibration isolation trenches  /  band gap characteristic  /  vibration isolation performance  /  amplitude attenuation ratio  /  low-frequency band gap
Haiyang WANG, Chunxin ZHAI, Zhu WANG, Jinhao FENG, Xiaomao ZHANG. Band gap characteristics and vibration isolation performance of combined periodic cross isolation trenches[J]. China Safety Science Journal, 2025 , 35 (2) : 118 -126 . DOI: 10.16265/j.cnki.issn1003-3033.2025.02.1216
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Year 2025 volume 35 Issue 2
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2025.02.1216
  • Receive Date：2024-09-12
  • Online Date：2025-07-05
  • Published：2025-02-28
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History
  • Received：2024-09-12
  • Revised：2024-11-21
Funding
Affiliations
    1 National & Local Joint Engineering Laboratory of Traffic Civil Engineering Materials，Chongqing Jiaotong University，Chongqing 400074，China
    2 School of Civil Engineering，Chongqing Jiaotong University，Chongqing 400074，China
    3 China Railway 18th Bureau Group Co.，Ltd.，Tianjin 300222，China
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红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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