Buffeting response of long-span bridges considering uncertain turbulence parameters using the environmental contour method

Lystad, Tor M.; Fenerci, Aksel; Øiseth, Ole

doi:10.1016/j.engstruct.2020.110575

Cited by 30 publications

(6 citation statements)

References 56 publications

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“…The table shows that the maximum buffeting responses occur at wind states with lower mean wind speeds and higher turbulence intensities than those in the current design guidelines. This result is also in accordance with the results of the ECM on the Hardanger Bridge [14].…”

Section: Extreme Response Based On Environmental Contourssupporting

confidence: 91%

“…Experience with full-scale measurements and numerical simulations has shown that randomness in the wind's turbulence field has a strong effect on measured structural responses [1,2,[11][12][13][3][4][5][6][7][8][9][10]. In particular, a study on the Hardanger Bridge concluded that the maximum buffeting response can occur for nonextreme wind speeds due to the higher significance of the variability in the wind's turbulence intensities [14]. Nevertheless, most of the current design guidelines for the structural design of long-span bridges assume the extreme buffeting response to be deterministically dependent on the extreme mean wind speed only [15].…”

Section: Introductionmentioning

confidence: 99%

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Investigations of the long-term extreme buffeting response of long-span bridges using importance sampling Monte Carlo simulations

Castellon

Fenerci

Øiseth

et al. 2022

Engineering Structures

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Section: Extreme Response Based On Environmental Contourssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Investigations of the long-term extreme buffeting response of long-span bridges using importance sampling Monte Carlo simulations

Castellon

Fenerci

Øiseth

et al. 2022

Engineering Structures

Self Cite

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“…[33], [34] The Weibull parameters from the Hardanger west and the Sulafjord are in the same range of magnitude. However, [4] reported this as a non-classical shape of the Weibull distribution that appears due to lack of data in the high-end of the mean wind speed. As an alternative to overcome this issue, our recommendation is to give more weight to the high-mean wind speeds compared to the mid-range or low-end.…”

Section: Results and Recommendationsmentioning

confidence: 99%

Rrecommendations for Full Long-Term Analysis of Long-Span Bridges

Castellon,

Fenerci,

Øiseth

2024

J. Phys.: Conf. Ser.

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Investigations of extreme buffeting responses on long-span bridges suggest revisiting the current design guidelines as these might be non-conservative. For such purposes, the full long-term analysis is the most accurate methodology. Despite its well-known advantages, the method is not the standard practice in bridge design, mainly due its high computational demand. Recent studies have contributed to make the analysis feasible by employing enhancing strate-gies such as machine learning and efficient simulation techniques. The results are promising, and the computational effort can be reduced to a fraction of the original formulation. It’s necessary that the more accurate long-term methods are included in the design guidelines for long-span bridges. In the Norwegian Handbook for bridge design, only a simplified methodology is recommended, which exposes a gap between research and engineering practice that must be fulfilled. Therefore, this paper presents a set of recommendations for implementing the full long-term analysis based on our experience with the calculations from the Sulafjord bridge, a 2800m single span suspension bridge currently in design and feasibility stage. The objective is to provide recommendations to back-up the abovementioned regulating effort and contribute to close the gap between academia and engineering practice.

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“…However, for long-span bridges, the prolonged vibration under frequently encountered wind speeds would risk the security of the vehicles and cause discomfort for pedestrians. More seriously, it may cause fatigue damage to the components of the bridge [1][2][3][4]. Nowadays, balanced cantilever methods have been widely adopted to construct long-span cable-stayed bridges.…”

Section: Introductionmentioning

confidence: 99%

Buffeting Characteristics of a Long-Span Cable-Stayed Bridge Crossing a Deep Canyon during Erection: Response Evaluation and Vibration Control

Zhang,

2024

Buildings

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The stiffness of a long-span cable-stayed bridge under construction may be much lower than that observed in service, making it more susceptible to wind effects, especially for a bridge designed using high piers crossing a deep canyon. To study the buffeting characteristics of such cable-stayed bridges under construction, a long-span cable-stayed bridge (the main span is 575 m) is taken as the engineering background. In this study, the buffeting responses and vibration countermeasures at three different construction states were systematically studied using time-domain analysis. It was found that the buffeting response enlarges with an increase in the wind attack angle. The RMS values of the vertical buffeting of the bridge deck end are relatively greater at the maximum double cantilever construction state and maximum single cantilever state. At maximum double cantilever construction state, the traditional wind-resistant cable connecting the bridge deck end to the bridge pile cap significantly reduces the vertical buffeting response, while the suppression effect on lateral and torsional buffeting is limited. When the bridge deck nears completion, wind-resistant cables installed at both cantilever ending in the ‘soft connection’ method would effectively suppress the vertical, lateral, and torsional buffeting. The suppression effect of cross-arranged wind-resistant cables is superior to that of the parallel arrangement. It is recommended that a reasonable wind-resistant cable layout scheme according to different construction conditions is selected.

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Buffeting response of long-span bridges considering uncertain turbulence parameters using the environmental contour method

Cited by 30 publications

References 56 publications

Investigations of the long-term extreme buffeting response of long-span bridges using importance sampling Monte Carlo simulations

Investigations of the long-term extreme buffeting response of long-span bridges using importance sampling Monte Carlo simulations

Rrecommendations for Full Long-Term Analysis of Long-Span Bridges

Buffeting Characteristics of a Long-Span Cable-Stayed Bridge Crossing a Deep Canyon during Erection: Response Evaluation and Vibration Control

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