Serviceability assessment of the Góis footbridge using vibration monitoring

Salgado-Estrada, Rolando; Branco, Jorge M.; Cruz, Paulo J. S.; Ayala, Gustavo

doi:10.1016/j.csndt.2014.10.001

Cited by 20 publications

(9 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The accelerations observed in Figure 10, show acceptable magnitudes, since their behavior is similar with the values obtained in [27], where they are compared with the codes shown there, this indicates that the system remains in a state of adequate service, and does not present significant levels of instability, the authors refer that the codes future be will stricter [16], and that the designs comply with this regulations [13][14], the normative British National Annex Eurocode, SÉTRA, HIVOSS, AASHTO, LRDF in [6] refers to critical magnitudes, however, we recommend that according to the satisfactory results obtained, be compared and monitored in the future, with traffics different from the proposed, whose classification was focused on the type TC2, as used in [28], whose density (D = 0.2 pedestrians per square meter) is presented in the dynamic system block diagram.…”

Section: B Study Of the Load Patternssupporting

confidence: 77%

Study of Behaviour Dynamic of the Pedestrian Loading on a Footbridge

Carballo¹

2018

IJERT

View full text Add to dashboard Cite

This paper presents the study of the movement between a passerby and the concrete walkway of a type armor footbridge, located in the Pachuca de Soto, Hidalgo, Mexico. In which readings were taken people walking with a portable equipment. The human body modeled as a dynamic system consisting of a mass concentrated in its gravity center and two docks representing damped passage. The movement of the mass simulated in a scheme that consists vertical and lateral displacement representation in the footbridge. The influence of the wind or other type of dynamic excitation on the footbridge is not examined here. The scheme idealized in a mathematical model matrixed coupling with the motion equation, through Lagrangian mechanics. It considers the temporary movement of the mass, and the dynamic response of the catwalk. This displacement is the result obtained by the restoration of the concrete footbridge and the energy contribution of the model when walking of six proposed cases, corresponding to different frequencies of passage and human mass, obtaining values that help to identify that the structural performance of the bridge, maintains optimal service conditions.

show abstract

Section: B Study Of the Load Patternssupporting

confidence: 77%

Study of Behaviour Dynamic of the Pedestrian Loading on a Footbridge

Carballo¹

2018

IJERT

View full text Add to dashboard Cite

show abstract

“…From a structural point of view, special attention may be required by pedestrian systems which can be more sensitive to walk-induced effects compared to other structural typologies. Traditional vibration serviceability assessment is based on consolidated structural health monitoring procedures and techniques [4][5][6][7][8][9]. Recently, various studies have started to assess the dynamic behaviour of laminated glass slabs under pedestrians, showing that structural dynamic parameters and performance indicators are rather different from other constructional solutions, as a major effect of flexibility, slenderness and (often) limited mass, compared to occupants [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Body CoM Acceleration for Rapid Analysis of Gait Variability and Pedestrian Effects on Structures

Bedon

2022

Buildings

View full text Add to dashboard Cite

Knowledge of body motion features and walk-induced effects is of primary importance for the vibration analysis of structures, especially low-frequency slabs and lightweight and/or slender systems, as well as for clinical applications. Structurally speaking, consolidated literature procedures are available for a wide set of constructional solutions and typologies. A basic assumption consists in the description of walking humans’ effects on structures through equivalent deterministic loads, in which the ground vertical reaction force due to pedestrians depends on their mass and motion frequency. However, a multitude of additional parameters should be taken into account and properly confirmed by dedicated laboratory studies. In this paper, the focus is on the assessment of a rapid analysis protocol in which attention is given to pedestrian input, based on a minimized sensor setup. The study of gait variability and related effects for structural purposes is based on the elaboration of single Wi-Fi sensor, body centre of mass (CoM) accelerations. A total of 50 walking configurations was experimentally investigated in laboratory or in field conditions (for more than 500 recorded gaits), with the support of an adult volunteer. Parametric gait analysis is presented considering different substructure conditions and motion configurations. Body CoM acceleration records are then used for the analysis of a concrete slab, where the attention is focused on the effects of (i) rough experimental body CoM input, or (ii) experimentally derived synthetized gait input. The effects on the structural side of rough experimental walk time histories or synthetized experimental stride signals are discussed.

show abstract

“…The problem especially concerns new structures designed using new construction solutions and materials. This is due to the fact that the vibration frequencies of the modern footbridges are often close to the frequencies which are induced by pedestrians [10][11][12][13][14][15][16][17][18]. The well-known examples of footbridges that experienced excessive vibrations during exploitation are the Millenium bridge in London [10][11][12], the Solferino bridge in Paris [13,14], and the Mape Valley Great Suspension Bridge [19].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Dynamics of Two Footbridges with Different Shapes of Girders

Banaś

Jankowski

2020

Applied Sciences

View full text Add to dashboard Cite

The paper presents the experimental and numerical results of the dynamic system identification and verification of the behavior of two footbridges in Poland. The experimental part of the study involved vibration testing under different scenarios of human-induced load, impulse load, and excitations induced by vibration exciter. Based on the results obtained, the identification of dynamic parameters of the footbridges was performed using the peak-picking method. With the impulse load applied to both structures, determination of their natural vibration frequencies was possible. Then, based on the design drawings, detailed finite element method (FEM) models were developed, and the numerical analyses were carried out. The comparison between experimental and numerical results obtained from the modal analysis showed a good agreement. The results also indicated that both structures under investigation have the first natural bending frequency of the deck in the range of human-induced excitation. Therefore, the risk of excessive structural vibrations caused by pedestrian loading was then analysed for both structures. The vibration comfort criteria for both footbridges were checked according to Sétra guidelines. In the case of the first footbridge, the results showed that the comfort criteria are fulfilled, regardless of the type of load. For the second footbridge, it was emphasized that the structure meets the assumptions of the guidelines for vibration severability in normal use; nevertheless, it is susceptible to excitations induced by synchronized users, even in the case of a small group of pedestrians.

show abstract

Serviceability assessment of the Góis footbridge using vibration monitoring

Cited by 20 publications

References 5 publications

Study of Behaviour Dynamic of the Pedestrian Loading on a Footbridge

Study of Behaviour Dynamic of the Pedestrian Loading on a Footbridge

Body CoM Acceleration for Rapid Analysis of Gait Variability and Pedestrian Effects on Structures

Experimental and Numerical Study on Dynamics of Two Footbridges with Different Shapes of Girders

Contact Info

Product

Resources

About