Synchronization of human walking observed during lateral vibration of a congested pedestrian bridge

Fujino, Yozo; Pacheco, Benito M.; Nakamura, Shun; Warnitchai, Pennung

doi:10.1002/eqe.4290220902

Cited by 245 publications

(154 citation statements)

References 6 publications

Supporting

Mentioning

143

Contrasting

Unclassified

Order By: Relevance

“…Moreover, it has been observed that the relationship between increasing the amount of load and the number of people is not linear. The dynamic load depends of the synchronization of crowd [8][9][10]. The synchronization increases with visual contact and the influence of noise in the public [11][12].…”

Section: Effect Of Human-structure Interactionmentioning

confidence: 99%

Structural health monitoring of grandstands: a review

Fuentes

Castro-Triguero

García‐Macías

et al. 2015

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. This article is a state of the art about Grandstands. The Grandstands are slender structures designed to accommodate a large number of people, which are specially under the actions of wind and the human-structure interaction. Over the years, it has been discuss of this topic, although still the number of publications still remain low. The human-structure interaction is a complex issue, where the loads may have different behaviours, depending many factors, including: type of audience (active or passive), public behaviour (jumping, walking, running, clapping, vandal loads), type of event (sports, concerts, meeting), position and posture of the individual, even influences the type of seat (with or without back, stiffness). However, the structure will behave differently when empty or fully occupied. Another load to consider is the wind, especially when the structure has a roof, screens, large-scale advertising, etc. These two types of loads can interact together, which implies an increase in the normal number of load combinations to consider. There are biomechanical models of human behaviour, used for design these types of structures. In addition, there are mathematical models to simulate the behaviour of the Grandstands by numerical methods. In recent years, all these models are throwing good results, against laboratory tests performed. It has also been monitored real Grandstands. This paper compiles all existing information on this topic.

show abstract

Section: Effect Of Human-structure Interactionmentioning

confidence: 99%

Structural health monitoring of grandstands: a review

Fuentes

Castro-Triguero

García‐Macías

et al. 2015

MATEC Web of Conferences

View full text Add to dashboard Cite

show abstract

“…This model, conceived for footbridges vibrating in the vertical direction, was tested on a laterally vibrating footbridge by Fujino et al (1993): the model underestimated the structural response, since it is not conceived to account for human-structure interaction.…”

Section: Action Of Groups and Crowdsmentioning

confidence: 99%

“…The observation of videos is also a way of measuring crowd density and velocity. For example, the T-bridge in Japan (Fujino et al, 1993;Yoshida et al, 2007), which connects a stadium to a bus terminal, was instrumented with three cameras installed on the stadium roof, synchronised between each other and connected to a computer (Figure 11). Thanks to an ad hoc-conceived digital head-tracking system, the motions of 50 pedestrians have been identified and compared with the lateral motion of the deck.…”

Section: In Situ Tests and Observationmentioning

confidence: 99%

“…All over the 20th century, the research was mainly directed towards the effects of vertical excitation, except for a few cases of lateral vibrations reported in literature in the '70s and '90s of the 20th century (e.g., Fujino et al, 1993). The closure of the London Millennium Bridge in 2000 focused the attention of researchers towards the problem of lateral vibration due to synchronised pedestrians (Dallard et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lively footbridges: overview and perspectives for the development of crowd and structure monitoring systems

Venuti

2012

IJLCPE

View full text Add to dashboard Cite

Abstract:Modern pedestrian bridges are very often lively structures: this feature is due, on one hand, to the increasing strength of materials and the design trend towards more slender and lightweight structures and, on the other, to the partial reliability of pedestrian dynamic load models and design procedures. Human-induced vibrations reduce the footbridge serviceability and frequently imply high costs for the improvement of the footbridge dynamic behaviour after the construction. Therefore, it is important to define comfort criteria, suitable and predictive load models and practical design rules and to develop monitoring systems to measure the crowd flow and the structural response. The scope of this paper is to provide a brief overview of the state-of-the-art concerning human-induced vibrations on footbridges, with a special focus on international codes and guidelines, addressed to provide a background knowledge to be shared with researchers involved in structural health monitoring and control.

show abstract

“…Research on large lateral vibrations induced by the synchronous walking of pedestrians in the cable-stayed bridge (T-bridge) was first investigated in 1993, and the mechanism of lateral vibrations was clarified [2]. Moreover, the same large lateral vibrations in the stress ribbon pedestrian bridge (London Millennium Bridge) were reported in 2000 [3].…”

Section: Introductionmentioning

confidence: 99%

Field Investigations On the Lateral Vibration Features Of Prestressed Concrete Stress Ribbon Footbridges

Fukada

Yoshikawa³

et al. 2015

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. The prestressed concrete (PC) stress ribbon footbridge is a type of suspension bridge without towers, which has been applied in Japan and all over the world for years in light of its low construction cost and aesthetic merit. It generally consists of the precast concrete slabs with embedded cables. However, the walking-induced lateral vibration trouble of the Millennium Bridge in London in 2000 gave a lesson to the engineers that the lateral vibration feature must be taken into consideration for the footbridge vibration evaluation. In this sense, the field investigations on the lateral vibration features of 14 pre-stressed concrete stress ribbon footbridge in Japan was carried out by artificial impact and damping free vibration tests. According to the investigations, the larger the bridge span, the lower the frequencies of lateral-related vibration modes. In addition, based on the damping-free vibration field tests, there was a tendency toward the damping constant degradation when bridge span became larger.

show abstract

Synchronization of human walking observed during lateral vibration of a congested pedestrian bridge

Cited by 245 publications

References 6 publications

Structural health monitoring of grandstands: a review

Structural health monitoring of grandstands: a review

Lively footbridges: overview and perspectives for the development of crowd and structure monitoring systems

Field Investigations On the Lateral Vibration Features Of Prestressed Concrete Stress Ribbon Footbridges

Contact Info

Product

Resources

About