Modeling the Effects of a Human Standing on a Structure Using a Closed Loop–Control System

Serviceability analysis for human-induced vertical vibration on pedestrian structures

“…By melding these three disciplines, future research will leverage tools and theories from kinesiology, to analyze and describe pedestrian gait characteristics (i.e., step length, step with, pace frequency, horizontal speed, among others) and uncertainties in biodynamic parameters (i.e., variations in the pedestrian mass, stiffness, and damping) under oscillatory conditions. Structural monitoring and control theory, to capture the interaction features of a pedestrian-structure system as coupled subsystems that interact dynamically through feedback links directly integrated into the model [7]. Structural engineering, to interpret these models and establish rational serviceability limits toward improving structural designs to meet realistic limit state specifications.…”

“…The main components of the pedestrian-structure interaction (PSI) depicted in Figure 1 can be classified as (1) dynamic actions induced by pedestrians on the structure, (2) pedestrians perception to an excessive vibration causing changes in the walking characteristics, and (3) changes in the dynamic properties of the structural system due to the presence of a crowd. The PSI is particularly pronounced when the lowest structural frequencies are close to the human pace frequency or their harmonics [5], [1], [2], [7]. This condition exposes the pedestrians to excessive structural vibration modifying their gait characteristics that may lead to unexpected structural behavior, increasing the vibration responses and exceeding serviceability limit states [8], [9], [10], [11].…”