Modelling framework of pedestrian-footbridge interaction in vertical direction. (2017)

• Record Type: Journal Article
• Authors: Venuti, Fiammetta; Racic, Vitomir; Corbetta, Alessandro
• Is Part Of: Procedia engineering. Volume 199(2017)
• Page Start: 2901
• Page End: 2906
• Publication Date: 2017
• Subjects: human-structure interaction -- human-induced vertical vibrations -- footbridges -- stochastic walking force; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.09.588
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: This study presents a modelling framework of human-structure interaction in the vertical direction, which integrates the three following key issues: crowd dynamics, pedestrian-structure interaction (PSI) and inter-subject and intra-subject variability of pedestrian walking loads. The framework comprises two main models: a microscopic model of crowd dynamics and a coupled dynamic model of the PSI. The latter is composed of three sub-models: a SDOF system having the dynamic properties of the empty structure, a SDOF system for each pedestrian and a stochastic force model. Each pedestrian SDOF moves along the footbridge following the trajectory and at the velocity simulated by the crowd model and is accompanied by a stochastic walking force time-history that accounts for inter- and intra-subject variability. Performance of the suggested modelling framework is studied through simulations of the vibration responses of four virtual footbridges due to different traffic scenarios.