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Mechanical systems and signal processing v.103, 2018년, pp.352 - 367   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Identification of walking human model using agent-based modelling

Shahabpoor, Erfan (Department of Architecture and Civil Engineering, University of Bath, Claverton Down, Bath BA2 7AY, UK ); Pavic, Aleksandar (Vibration Engineering Section, College of Engineering, Mathematics and Physical Sciences, University of Exeter, UK ); Racic, Vitomir (Department of Civil and Environmental Engineering, Politecnico di Milano, Italy );
  • 초록  

    Abstract The interaction of walking people with large vibrating structures, such as footbridges and floors, in the vertical direction is an important yet challenging phenomenon to describe mathematically. Several different models have been proposed in the literature to simulate interaction of stationary people with vibrating structures. However, the research on moving (walking) human models, explicitly identified for vibration serviceability assessment of civil structures, is still sparse. In this study, the results of a comprehensive set of FRF-based modal tests were used, in which, over a hundred test subjects walked in different group sizes and walking patterns on a test structure. An agent-based model was used to simulate discrete traffic-structure interactions. The occupied structure modal parameters found in tests were used to identify the parameters of the walking individual’s single-degree-of-freedom (SDOF) mass-spring-damper model using ‘reverse engineering’ methodology. The analysis of the results suggested that the normal distribution with the average of μ = 2.85Hz and standard deviation of σ = 0.34Hz can describe human SDOF model natural frequency. Similarly, the normal distribution with μ = 0.295 and σ = 0.047 can describe the human model damping ratio. Compared to the previous studies, the agent-based modelling methodology proposed in this paper offers significant flexibility in simulating multi-pedestrian walking traffics, external forces and simulating different mechanisms of human-structure and human-environment interaction at the same time. Highlights An agent-based model is presented simulating successfully HSI in the vertical direction. A normal distribution is proposed to describe damping ratio of the SDOF walking human. A normal distribution is proposed to describe natural frequency of the SDOF walking human.


  • 주제어

    Human-structure interaction .   Vibration serviceability .   Discrete traffic model .   SDOF moving human model .   FRF-based modal testing.  

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