Characterisation of the wind properties in the Grande Ravine viaduct

Bastos, Fernando Evangelista; Caetano, Elsa; Cunha, Álvaro; Cespedes, Xavier; Flamand, Olivier

doi:10.1016/j.jweia.2017.12.012

Cited by 27 publications

(10 citation statements)

References 17 publications

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“…In addition to the aforementioned, the spectra models presented by von Ka´rma´n (1948) appear to fit the field measured data well according to many field measured research (Bastos et al, 2018;Cao et al, 2009;Fenerci and Øiseth, 2018;Hui et al, 2009b). The Von Ka´rma´n spectrum for longitudinal component is obtained by equation 11, and the von Ka´rma´n spectrum models for lateral and vertical components are obtained by equation 12f Á S u (f , z)…”

Section: Power Spectra Of Wind Speedsmentioning

confidence: 83%

“…Moreover, compared with the coastal area, there are a few studies by means of field measurement methods recently to depict the wind flow characteristics in complex terrains. Bastos et al (2018) investigated the properties of the atmospheric wind during an abrupt volcanic breach where affected by cyclones frequently and pointed that a deep and shallow ravine would naturally accelerate the local wind and affect the wind-induced response of the bridge. Cheynet et al (2016) studied the buffeting response of a suspension bridge in complex terrain based on full-scale data, and the effect of the topography was investigated.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of wind characteristics at different heights of deep-cut canyon based on field measurement

Zhang

et al. 2019

Advances in Structural Engineering

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The typical U-shaped deep-cut canyon is widely distributed in the western mountainous areas of China, especially in Sichuan province and Yunnan province. The deep-cut canyon has the characteristics of the high drop in elevation, high-temperature difference, and complex wind environment. A 50 m high meteorological mast with a total of eight anemometers was erected in such topography, and a long-span suspension bridge will be constructed in the area where the meteorological mast is located. Based on the long-term monitor data, the wind characteristic parameters including average and fluctuating wind characteristics and coherence between different heights are investigated. The results are as follows. The dominant wind direction which depends on the topography is north–south. The attack angle of wind is mainly less than zero, and its probability distribution obeys the hypothetical Gaussian distribution. Both the increases in height of anemometer and in wind speed reduce the dispersion of the attack angle of wind. The gust factor has a similar change law of attack angle of wind. Turbulence intensities are affected by the height of the anemometer and the wind speed, and they are different from the recommended value of China Codes. In terms of turbulence integral length scale, the value increases with an increase in the height of the anemometer in the same component. The largest value occurs in the longitudinal direction and the smallest occurs in the vertical direction at the same level. The coherence between any two locations is relatively strong, and the longitudinal component is stronger than others. The measured wind power spectrum for longitudinal, lateral, and vertical wind in deep-cut canyon fits the von Kármán model better.

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Section: Power Spectra Of Wind Speedsmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Comparison of wind characteristics at different heights of deep-cut canyon based on field measurement

Zhang

et al. 2019

Advances in Structural Engineering

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“…Compared to the land-based measurement tower, the WMS installed on the bridge is apparently more representative and accurate. Although the WMS has become very popular and been treated as an essential part of the united wind and structural health monitoring system (WSHMS) in major and important bridges around the world to enhance structural safety and verify the current wind-induced vibration theory [7][8][9][10][11][12][13][14][15][16][17][18], most of the available studies concentrate on the wind characteristics and buffeting response of cable-supported bridges under the service stage. On the other On the other hand, it is well known that the cable-stayed bridges are considerably more vulnerable to oncoming wind turbulence during construction than after completion [8,[18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Strong Wind Characteristics and Buffeting Response of a Cable-Stayed Bridge under Construction

Yan

Ren

et al. 2020

Sensors

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This study carries out a detailed full-scale investigation on the strong wind characteristics at a cable-stayed bridge site and associated buffeting response of the bridge structure during construction, using a field monitoring system. It is found that the wind turbulence parameters during the typhoon and monsoon conditions share a considerable amount of similarity, and they can be described as the input turbulence parameters for the current wind-induced vibration theory. While the longitudinal turbulence integral scales are consistent with those in regional structural codes, the turbulence intensities and gust factors are less than the recommended values. The wind spectra obtained via the field measurements can be well approximated by the von Karman spectra. For the buffeting response of the bridge under strong winds, its vertical acceleration responses at the extreme single-cantilever state are significantly larger than those in the horizontal direction and the increasing tendencies with mean wind velocities are also different from each other. The identified frequencies of the bridge are utilized to validate its finite element model (FEM), and these field-measurement acceleration results are compared with those from the FEM-based numerical buffeting analysis with measured turbulence parameters.

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“…Although the general methodology applied in this contribution is well-known [1,20,25], the application to long-span bridges under environmental loading is new, where the wind loads are governed by the local wind field and the aerodynamic properties of the structure, both of which are not always well-known. Local wind measurements at bridge sites often indicate a variability (non-deterministic scatter) in the parameters used to described the wind field [11,13], which sometimes also deviates from recommended values in design specifications [3,35]. This leads to a discrepancy between the measured and predicted response, as observed in [9,34].…”

Section: Introductionmentioning

confidence: 99%

The use of inverse methods for response estimation of long-span suspension bridges with uncertain wind loading conditions

Petersen

Øiseth

Lourens

2018

J Civil Struct Health Monit

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Characterisation of the wind properties in the Grande Ravine viaduct

Cited by 27 publications

References 17 publications

Comparison of wind characteristics at different heights of deep-cut canyon based on field measurement

Comparison of wind characteristics at different heights of deep-cut canyon based on field measurement

Strong Wind Characteristics and Buffeting Response of a Cable-Stayed Bridge under Construction

The use of inverse methods for response estimation of long-span suspension bridges with uncertain wind loading conditions

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