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Train-induced Structural Vibration Response Model Based on Mobility Theory
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Qingquan LU1, Jialiang CHEN2, 3, Chao ZOU4, Xuming LI4, Liqiu MA1, Zhe WANG1
Urban Rapid Rail Transit | 2024, 37(6) : 57 - 63
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Urban Rapid Rail Transit | 2024, 37(6): 57-63
• Academic Discussion •
Train-induced Structural Vibration Response Model Based on Mobility Theory
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Qingquan LU1, Jialiang CHEN2, 3, Chao ZOU4, Xuming LI4, Liqiu MA1, Zhe WANG1
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doi: 10.3969/j.issn.1672-6073.2024.06.008
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To predict the vibration response of buildings along subway lines quickly and reasonably, a building structural system is decomposed into two parts, namely, a propagation structure and a response structure, based on the theory of mechanical mobility. The bearing structure is assumed to be a beam element model, and the slab structure is considered a plate element model. The mobility formula and the corresponding matrix expressions for each unit system are derived, and a traininduced structural vibration response model is constructed. The reliability and accuracy of the model are validated through onsite testing, showing that the predicted structural responses align well with measured vibrations in both time and frequency domains. In the frequency domain, the maximum error of the center frequencies of each 1/3 octave band does not exceed 5 dB, indicating that the proposed traininduced structural vibration response model can quickly and effectively predict the structural vibration response and that the outcomes can provide theoretical support for vibration prediction along subway lines.

metro  /  vibration prediction  /  mobility theory  /  building structure  /  structural dynamics  /  on-site measurements
Qingquan LU, Jialiang CHEN, Chao ZOU, Xuming LI, Liqiu MA, Zhe WANG. Train-induced Structural Vibration Response Model Based on Mobility Theory[J]. Urban Rapid Rail Transit, 2024 , 37 (6) : 57 -63 . DOI: 10.3969/j.issn.1672-6073.2024.06.008
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Year 2024 volume 37 Issue 6
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doi: 10.3969/j.issn.1672-6073.2024.06.008
  • Receive Date：2024-03-18
  • Online Date：2025-07-09
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  • Received：2024-03-18
  • Revised：2024-06-17
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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
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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