Đặng, Hiệp Vũ (2014) Experimental and numerical modelling of walking locomotion on vertically vibrating low-frequency structures. PhD thesis, University of Warwick.

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Abstract

Vibration serviceability is a governing factor in the design of low-frequency structures, which are sensitive to human-induced loads. To achieve reliable vibration estimates, structural engineers need to model the combined pedestrianstructure system as close to reality as possible. The most uncertain aspect in the modelling is accounting for pedestrian interaction with perceptibly vibrating structure. To improve understanding of this aspect, the thesis aims to provide experimental and numerical modelling of walking locomotion on lively structures in the vertical direction.

Experimental programmes were conducted to provide characteristics of walking gait on both rigid and lively surfaces, where the former was used as benchmark for comparison. Both kinematic and kinetic parameters were measured using a motion capture system. Discrepancies of the gait parameters between data collected on imperceptibly and perceptibly vibrating surfaces, as consequences of the pedestrian-structure dynamic interaction, were quantified. The unique database provided in this thesis contributes to the understanding of locomotion on the vibrating surface and, therefore, can be used for calibration of pedestrian models intended for civil engineering applications.

An interactive model was developed, using a biomechanical model to represent the pedestrian. The novel feature of this model is to account for two-way interaction between the pedestrian and the structure. A sensitivity analysis and validations of the proposed model against experimental data were also provided. Results of the modelling work inform designers detailed evaluations of performance of the model on both virtual and as-built structures.

Item Type:	Thesis (PhD)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Library of Congress Subject Headings (LCSH):	Structural analysis (Engineering), Buildings -- Vibration, Gait in humans -- Measurement
Official Date:	June 2014
Dates:	Date Event June 2014 UNSPECIFIED
Institution:	University of Warwick
Theses Department:	School of Engineering
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Živanović, Stana ; Chappell, M. J. (Michael J.)
Sponsors:	Engineering and Physical Sciences Research Council (EPSRC) EP/I03839X/1 ; University of Warwick
Extent:	xxvi, 297 leaves : illustrations (colour), charts (colour).
Language:	eng

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