• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 57 Issue 2
Jul.  2022
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Article Contents
GUO Xiongfeng, CHEN Zhang, FENG Qi. Vibration Serviceability Evaluation Under Typical Local Deformations of Pavement[J]. Journal of Southwest Jiaotong University, 2022, 57(2): 376-383. doi: 10.3969/j.issn.0258-2724.20200041
Citation: GUO Xiongfeng, CHEN Zhang, FENG Qi. Vibration Serviceability Evaluation Under Typical Local Deformations of Pavement[J]. Journal of Southwest Jiaotong University, 2022, 57(2): 376-383. doi: 10.3969/j.issn.0258-2724.20200041

Vibration Serviceability Evaluation Under Typical Local Deformations of Pavement

doi: 10.3969/j.issn.0258-2724.20200041
  • Received Date: 15 Feb 2020
  • Rev Recd Date: 28 Jul 2020
  • Publish Date: 24 Aug 2020
  • To study the influence of local deformation of asphalt pavement on riding quality, the vibration serviceability under three types of local deformation, joint faulting type, double-section type and curved surface type, which are common in pavement maintenance management, was evaluated. Firstly, simplified profile model of local deformations are established, and vertical vibration accelerations of human body with the excitation of local deformations are derived, based on the quarter car model. Then, the vertical accelerations are filtered with designed frequency-weighted filter, and instantaneous frequency-weighted accelerations are hence obtained, root-mean-square accelerations under different working conditions are calculated, and weighted vibration serviceability evaluation in time-domain is achieved. Finally, evaluation criteria of local deformations are proposed. The results show that, root-mean-square acceleration is directly proportional to height difference of local deformation. Under the same deformation degree, the driving experience of double-section deformation is the worst. When local deformation height difference of joint faulting, double-section and curved surface reaches 4.76, 2.78 and 3.26 cm, respectively, riding quality reaches extremely uncomfortable states.

     

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