Probabilistic analysis of a twin deck curved cable-stayed footbridge subjected to multiple inputs and corrosion

Bursi, Oreste S.; Cazzador, Enrico; Ussia, Alessia

doi:10.1016/j.engstruct.2015.09.034

Cited by 7 publications

(2 citation statements)

References 21 publications

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“…The oldest case for which there is technical reference was the collapse of the Broughton Bridge in the UK due to the dynamic loads induced by the harmonic march of 60 infantry soldiers crossing the structure [18]. Additionally, more recent incidents have been reported in this type of structure caused by anthropic solicitations, such as the cases of: The Wuhan Yangtze bridge, China [19]; Toda-Park bridge, Japan [17]; Pedro and Inês bridge, Coimbra-Portugal [19], [20]; Long Span steel bridge, Changi Airport-Singapore [13], [16]; Le Ponte del Mare, Pescara-Italy [20]; Goodwill bridge, Brisbane-Australia [21]; and Eeklo pedestrian bridge, Belgium [22], [23], among others [24].…”

Section: Introductionmentioning

confidence: 99%

A Multiaxial Test Framework for the Evaluation of Human Gait-Induced Loads on Lateral Harmonic Surfaces

Castillo,

Thomson,

Marulanda

2024

J. Phys.: Conf. Ser.

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The introduction of increasingly resistant and light-weight materials in the construction industry, coupled with the hypothesis of a global regeneration of urban structures with higher technical and aesthetic requirements, has resulted in civil structures such as bleachers, stairs, slabs, and foot-bridge being vulnerable to excessive vibrations due to dynamic loads, especially human-induced loads. These loads present adaptive phenomena due to structural vibrations generated by the coupling effects of Human-Structure Interaction (HSI). Two main aspects are considered in the effects of HSI: the change in dynamic properties of the structure due to the additional presence of non-stationary mass, and the degree of coupling between people in transit, as well as between them and the structure. Therefore, this paper focuses on the study of the last aspect considered through the development of a Dynamic Platform, the Human-Structure Interaction Multiaxial Test Framework (HSI-MTF), to acquire three-dimensional loads induced by human gait under the effects of lateral harmonic motions. An experimental campaign was conducted with a test subject to evaluate gait loads under lateral sinusoidal movements and on rigid surface. The lateral loads, and frequency content induced by the human gait during the HSI-MTF lateral surface displacement protocols were analyzed.

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Section: Introductionmentioning

confidence: 99%

A Multiaxial Test Framework for the Evaluation of Human Gait-Induced Loads on Lateral Harmonic Surfaces

Castillo,

Thomson,

Marulanda

2024

J. Phys.: Conf. Ser.

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“…The oldest cases for which there is technical reference were the collapse of the Broughton Bridge in the UK due to the dynamic loads induced by the harmonic march of 60 infantry soldiers crossing the structure [28], the lateral vibration affectations on the Toda-Park Bridge in Japan [10], and the Solferino Bridge in France [29]. Additionally, more recent incidents have been reported in this type of structure caused by anthropic forces induced, such as the cases of The Wuhan Yangtze Bridge, China [30]; Pedro and Inês Bridge, Coimbra-Portugal [14,15]; Long Span Steel Bridge, Changi Airport, Singapore [11,12]; Le Ponte del Mare, Pescara, Italy [31]; Goodwill Bridge, Brisbane, Australia [32]; Eeklo Bridge, Belgium [8,9]; and the Folke Bernadotte Bridge, Sweden [33], among others [34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Pedestrian-Induced Multiaxial Gait Loads on Footbridges: Effects of the Structure-to-Human Interaction by Lateral Vibrating Platforms

Castillo,

Marulanda,

Thomson

2024

Sensors

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The introduction of resistant and lightweight materials in the construction industry has led to civil structures being vulnerable to excessive vibrations, particularly in footbridges exposed to human-induced gait loads. This interaction, known as Human–Structure Interaction (HSI), involves a complex interplay between structural vibrations and gait loads. Despite extensive research on HSI, the simultaneous effects of lateral structural vibrations with fundamental frequencies close to human gait frequency (around 1.0 Hz) and wide amplitudes (over 30.0 mm) remain inadequately understood, posing a contemporary structural challenge highlighted by incidents in iconic bridges like the Millennium Bridge in London, Solferino Bridge in Paris, and Premier Bridge in Cali, Colombia. This paper focuses on the experimental exploration of Structure-to-Human Interaction (S2HI) effects using the Human–Structure Interaction Multi-Axial Test Framework (HSI-MTF). The framework enables the simultaneous measurement of vertical and lateral loads induced by human gait on surfaces with diverse frequency ranges and wide-amplitude lateral harmonic motions. The study involved seven test subjects, evaluating gait loads on rigid and harmonic lateral surfaces with displacements ranging from 5.0 to 50.0 mm and frequency content from 0.70 to 1.30 Hz. A low-cost vision-based motion capture system with smartphones analyzed the support (Tsu) and swing (Tsw) periods of human gait. Results indicated substantial differences in Tsu and Tsw on lateral harmonic protocols, reaching up to 96.53% and 58.15%, respectively, compared to rigid surfaces. Normalized lateral loads (LL) relative to the subject’s weight (W0) exhibited a linear growth proportional to lateral excitation frequency, with increased proportionality constants linked to higher vibration amplitudes. Linear regressions yielded an average R2 of 0.815. Regarding normalized vertical load (LV) with respect to W0, a consistent behavior was observed for amplitudes up to 30.0 mm, beyond which a linear increase, directly proportional to frequency, resulted in a 28.3% increment compared to rigid surfaces. Correlation analyses using Pearson linear coefficients determined relationships between structural surface vibration and pedestrian lateral motion, providing valuable insights into Structure-to-Human Interaction dynamics.

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Effect of uncertainties in cable corrosion and material strength on seismic fragility of long-span cable-stayed bridges in marine environments

Lu,

2024

Structures

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Probabilistic analysis of a twin deck curved cable-stayed footbridge subjected to multiple inputs and corrosion

Cited by 7 publications

References 21 publications

A Multiaxial Test Framework for the Evaluation of Human Gait-Induced Loads on Lateral Harmonic Surfaces

A Multiaxial Test Framework for the Evaluation of Human Gait-Induced Loads on Lateral Harmonic Surfaces

Experimental Evaluation of Pedestrian-Induced Multiaxial Gait Loads on Footbridges: Effects of the Structure-to-Human Interaction by Lateral Vibrating Platforms

Effect of uncertainties in cable corrosion and material strength on seismic fragility of long-span cable-stayed bridges in marine environments

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