Construction aerodynamics of cable-stayed bridges for record spans: Stonecutters Bridge

Sham, S. H. R.; Wyatt, T.A.

doi:10.1016/j.istruc.2016.08.010

Cited by 14 publications

(4 citation statements)

References 4 publications

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“…The recent development of the curving process allows the employment of curved panels in the design of modern infrastructures such as steel and steel-concrete composite bridge decks [1]. Their application may offer attractive aesthetic and better aerodynamic possibilities [2] and, in some cases, even increases structural efficiency [3,4]. In practical bridge design, curved stiffened plates can represent the bottom flange, which is welded in the longitudinal direction to vertical or inclined web plates to form a closed box-section, see Fig.…”

Section: Motivationmentioning

confidence: 99%

Ultimate resistance of longitudinally stiffened curved plates subjected to pure compression

Piculin

Može

2021

Journal of Constructional Steel Research

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Section: Motivationmentioning

confidence: 99%

Ultimate resistance of longitudinally stiffened curved plates subjected to pure compression

Piculin

Može

2021

Journal of Constructional Steel Research

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“…Diana et al [26] used four aeroelastic models representing three different construction states and a service state of the bridge to verify the aerodynamic stability and buffeting response of the Izmit Bay Bridge in Turkey under various flow fields. Using sectional and full bridge aeroelastic model tests of the Stonecutters Bridge, Sham et al [27] confirmed that aeroelastic damping controls the vertical and torsional response of the buffeting vibration.…”

Section: Introductionmentioning

confidence: 97%

Experimental Study of Mitigation of Wind-Induced Vibration in Asymmetric Cable-Stayed Bridge Using Sharp Wind Fairings

et al. 2021

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This paper investigated the aerodynamic response features of an asymmetric cable-stayed bridge. The wind resistance design parameters for judging the response were first determined, afterwards the bridge dynamic characteristics were analyzed for subsequent aerodynamic analysis. The vortex-induced vibrations (VIV) and flutter response at various wind fairing angles were then examined by using a 1:50 sectional model in the wind tunnel test. Finally, a 1:150 full bridge aeroelastic model was employed to explore the aerodynamic stability and characteristics of the whole asymmetric bridge under different wind attack angles in various flow fields. The results show that the sharp wind fairings could reduce the VIV amplitude of the steel box girder cable-stayed bridge to some extent, and the example bridge has examined to have enough flutter stability through sectional and full bridge aeroelastic model wind tunnel tests. Unlike symmetric bridges, the bridge’s maximum displacement of first torsion mode shape is at the closure rather than the mid-span, which is the essential reason to lead this unique vibration feature. The results from the present study could highlight the important effect of structural asymmetry and fairing shape to the wind-induced bridge vibration and hence may facilitate more appropriate wind design of asymmetric cable-stayed bridges.

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“…Most of the study has concentrated on the impacts of static, impulsive, and comparable static wind forces. In existing seismic codes, there are no calculation techniques for considering transmission line constructions under earthquake stress (Tang et al, 2021: Sham & Wyatt, 2016. Many nonlinear issues, including dynamic nonlinearity, geometric nonlinearity, and material nonlinearity, are involved in the seismic dynamic responses of transmission towers (Khuri & Mukhopadhyay, 2010).…”

Section: Introductionmentioning

confidence: 99%

Failure Control of an Electric Transmission Tower System under Strong Earthquakes

2022

EAJSE

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The aim of the project is to control the failure of the structural system of an electric transmission tower system during strong earthquakes. Optimization process is being applied by the support of both surrogate modeling and Hessian Matrix method using MATLAB codes. Latin Hypercube sampling method is dedicated to arrange twenty-five numerical models of the system in ABAQUS program. Five parameters are used in the optimization process which are the thickness of steel member of the transmission tower, the Modulus of Elasticity of the steel member, radius of the conductor steel wire, Modulus of Elasticity of the conductor steel wire, and the Peak ground acceleration of the earthquake. The first four parameters are controllable in the design but the last parameter is can't be controlled because it is uncertain and it is related to the earthquake strength. The surrogate models for the maximum principal stress and maximum principal strain of the structural system are constructed. The coefficients of determination of both surrogate models were 97.02% and 92.06% respectively, which are considered excellent and reliable for representing and predicting the responses of the structural system. The results of the optimization all involved five parameters from the Hessian Matrix method for both surrogate models were very accurate and are optimum values through comparing the responses of them in the surrogate models with the numerical simulation results. The surrogate modeling and the Hessian Matrix method are great tools which can be utilized in the optimization of the design of the electric transmission tower system under strong earthquakes. Consequently, the failure of the structural system then can be easily controlled to a great extent in the design stage and after construction.

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Construction aerodynamics of cable-stayed bridges for record spans: Stonecutters Bridge

Cited by 14 publications

References 4 publications

Ultimate resistance of longitudinally stiffened curved plates subjected to pure compression

Ultimate resistance of longitudinally stiffened curved plates subjected to pure compression

Experimental Study of Mitigation of Wind-Induced Vibration in Asymmetric Cable-Stayed Bridge Using Sharp Wind Fairings

Failure Control of an Electric Transmission Tower System under Strong Earthquakes

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