Identification of a human walking force model based on dynamic monitoring data from pedestrian bridges

Obata, Takashi; Miyamori, Yasunori

doi:10.1016/j.compstruc.2005.11.003

Cited by 15 publications

(7 citation statements)

References 3 publications

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“…This method was then adopted by Blanchard et al [74] for application in civil engineering to footbridge structures. Later, many researchers adopted the same method to produce a dynamic forcing function, to name a few [11,46,59,[75][76][77]. Equation 1consists of two main parts; a static part related to the weight of an individual and a time-varying part associated with the dynamic load [53].…”

Section: Deterministic Walking Modelsmentioning

confidence: 99%

Review of Pedestrian Load Models for Vibration Serviceability Assessment of Floor Structures

et al. 2018

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Innovative design and technological advancements in the construction industry have resulted in an increased use of large, slender and lightweight floors in contemporary office buildings. Compounded by an ever-increasing use of open-plan layouts with few internal partitions and thus lower damping, floor vibration is becoming a governing limit state in the modern structural design originating from dynamic footfall excitations. This could cause annoyance and discomfort to building occupants as well as knock-on management and financial consequences for facility owners. This article presents a comprehensive review pertinent to walking-induced dynamic loading of low-frequency floor structures. It is intended to introduce and explain key walking parameters in the field as well as summarise the development of previous walking models and methods for vibration serviceability assessment. Although a number of walking models and design procedures have been proposed, the literature survey highlights that further work is required in the following areas; (1) the development of a probabilistic multi-person loading model which accounts for inter- and intra-subject variabilities, (2) the identification of walking paths (routes accounting for the effect of occupancy patterns on office floors) coupled with spatial distribution of pedestrians and (3) the production of a statistical spatial response approach for vibration serviceability assessment. A stochastic approach, capable of taking into account uncertainties in loading model and vibration responses, appears to be a more reliable way forward compared to the deterministic approaches of the past and there is a clear need for further research in this area.

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Section: Deterministic Walking Modelsmentioning

confidence: 99%

Review of Pedestrian Load Models for Vibration Serviceability Assessment of Floor Structures

et al. 2018

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“…Obata et al regarded six parameters (contact time, heel period, heel impact coefficient, tip of toe period, tip of toe impact coefficient, and impact of heel to tip of toe) as identification parameters based on the human walking force model to establish an objective function by means of the ratio of calculated and measured accelerations. The identification was performed by means of the GA algorithm [ 2 ]. The periodic characteristics of the walking load were clear.…”

Section: Introductionmentioning

confidence: 99%

Study on an Integral Algorithm of Load Identification Based on Displacement Response

Zhu

Tian

et al. 2021

Sensors

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Load identification is a very important and challenging indirect load measurement method because load identification is an inverse problem solution with ill-conditioned characteristics. A new method of load identification is proposed here, in which a virtual function was introduced to establish integral structure equations of motion, and partial integration was applied to reduce the response types in the equations. The effects of loading duration, the type of basis function, and the number of basis function expansion items on the calculation efficiency and the accuracy of load identification were comprehensively taken into account. Numerical simulation and experimental results showed that our algorithm could not only effectively identify periodic and random loads, but there was also a trade-off between the calculation efficiency and identification accuracy. Additionally, our algorithm can improve the ill-conditionedness of the solution of load identification equations, has better robustness to noise, and has high computational efficiency.

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“…The normal pedestrian stride frequency is between 1.6Hz (slowly walk) and 4Hz (power walk), and the average value is about 2Hz [3,4]. In this paper, the vertical response are mainly considered under pedestrian loads.…”

Section: The Pedestrian Load Modelmentioning

confidence: 99%

Research on Dynamic Characteristics of Boarding Bridge Under the Crowd Loads

Pan¹,

Zhang²

2017

dtetr

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The 45m boarding bridge is taken as the research object in this paper. The transient vibration model is established according to the transient dynamic analysis theory. Based on the dynamic analysis results of the structure under the crowd loads, the TMB vibration reduction analysis is conducted. This method can be used as a reference for analyzing the dynamic characteristics of other boarding bridges under the crowd loads.

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Identification of a human walking force model based on dynamic monitoring data from pedestrian bridges

Cited by 15 publications

References 3 publications

Review of Pedestrian Load Models for Vibration Serviceability Assessment of Floor Structures

Review of Pedestrian Load Models for Vibration Serviceability Assessment of Floor Structures

Study on an Integral Algorithm of Load Identification Based on Displacement Response

Research on Dynamic Characteristics of Boarding Bridge Under the Crowd Loads

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