Identification and Modelling of Vertical Human-Structure Interaction

Nimmen, Katrien Van; Maes, Kristof; Živanović, Stana; Lombaert, Geert; Roeck, Guido De; Broeck, Peter Van den

doi:10.1007/978-3-319-15248-6_34

Cited by 26 publications

(13 citation statements)

References 22 publications

(27 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As recently as 2015, Zhang et al [44], Van Nimmen et al [45], and Salyards and Hua [46] carried out a set of experiments on full-scale structures and reported a considerable increase in the damping ratio and a slight change in the natural frequency of the structure occupied by walking people or stationary people with bent knees.…”

Section: Experimental Evidencesmentioning

confidence: 99%

Interaction between Walking Humans and Structures in Vertical Direction: A Literature Review

Shahabpoor

Pavić

Racić

2016

Shock and Vibration

View full text Add to dashboard Cite

Realistic simulation of the dynamic effects of walking pedestrians on structures is still a considerable challenge. This is mainly due to the inter- and intrasubject variability of humans and their bodies and difficult-to-predict loading scenarios, including multipedestrian walking traffic and unknown human-structure interaction (HSI) mechanisms. Over the past three decades, several attempts have been made to simulate walking HSI in the lateral direction. However, research into the mechanisms of this interaction in the vertical direction, despite its higher likelihood and critical importance, is fragmented and incoherent. It is, therefore, difficult to apply and codify. This paper critically reviews the efforts to date to simulate walking HSI in the vertical direction and highlights the key areas that need further investigation.

show abstract

Section: Experimental Evidencesmentioning

confidence: 99%

Interaction between Walking Humans and Structures in Vertical Direction: A Literature Review

Shahabpoor

Pavić

Racić

2016

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…The effects of a stationary person on the mass, damping, and frequency of the structure are quite well known [17], [4], [25], [26]. Furthermore, walking people can also considerably increase the damping and reduce the frequency of the coupled system [18], [27], [28], [29], [30], [31]. For example, Kasperski [32] concluded that the damping added to the bridge by a pedestrian can be as high as 13%.…”

Section: Previous Studiesmentioning

confidence: 99%

Assessment of human-structure interaction on a lively lightweight GFRP footbridge

Ahmadi

Caprani

Živanović

et al. 2019

Engineering Structures

Self Cite

View full text Add to dashboard Cite

Human activities and occupancy can induce excessive structural vibrations. Human-structure interaction (HSI) can significantly affect responses. However, this phenomenon is not accounted for in many design guidelines due to lack of experimental studies. Concurrently, there is increasing application of lightweight high-strength materials such as glass fibre reinforced polymer (GFRP). The vibration sensitivity of such structures is not yet well known, despite the expectation that it could be important due to high human-to-structure mass ratio. This paper examines the effect of HSI on the vibration response prediction of a lively lightweight GFRP footbridge, and it compares the results to those from a heavy concretecomposite footbridge. An extensive ensemble of test trials was conducted, accompanied by a survey on vibration perception by the walkers. The influence of HSI on the lightweight bridge vibration response is quantified. It is found that the non-interacting moving force models produce poor predictions, especially for the GFRP bridge. It is also found that vibration of the bridge had a strong influence on walking force, and to a lesser extent on the dynamics of the human-structure system. Finally, it is found that the response factor of about 2 is appropriate for determining the vibration tolerance level by walkers.

show abstract

“…The fundamental natural frequency of an active person is situated between 2.5 Hz and 4 Hz with a corresponding modal damping ratio between 20% and 40% [22,25]. For passive persons, the natural frequency and damping ratio are generally situated between 5.0-6.5 Hz and 35%-50%, respectively [22,26].…”

Section: Dynamic Behaviour Of the Human Bodymentioning

confidence: 99%

“…As the persons are assumed to be stationary, the coupled system is time-invariant. The reader is referred to [25] for a detailed description of the coupled system and corresponding system matrices.…”

Section: Coupled Human-structure Modelmentioning

confidence: 99%

The Impact of Vertical Human-Structure Interaction for Footbridges

Nimmen¹,

Maes²,

Lombaert³

et al. 2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

Self Cite

View full text Add to dashboard Cite

Abstract.To allow for a more accurate description of crowd-induced loading, the present study aims to provide the necessary insights into vertical human-structure interaction (HSI) phenomena, to date ignored in current load models. A parametric study is performed to investigate the effects of the mechanical interaction between pedestrians, represented by simple lumped parameter models, and the supporting footbridge. The most significant HSI-effect for the lowfrequency modes of a footbridge, is in the effective damping ratio of the coupled system which is much higher than the inherent structural damping. The effective damping ratio increases monotonically with the pedestrian density but is highly dependent on the natural frequency of the footbridge. In order to verify the findings, a comprehensive full-scale experimental study is performed on two footbridges. It is shown that the crowd-structure model is able to reproduce the experimentally identified dynamic characteristics of the coupled system.

show abstract

Identification and Modelling of Vertical Human-Structure Interaction

Cited by 26 publications

References 22 publications

Interaction between Walking Humans and Structures in Vertical Direction: A Literature Review

Interaction between Walking Humans and Structures in Vertical Direction: A Literature Review

Assessment of human-structure interaction on a lively lightweight GFRP footbridge

The Impact of Vertical Human-Structure Interaction for Footbridges

Contact Info

Product

Resources

About