Wind- and rain-induced oscillations of cables of stayed bridges

Bosdogianni, A.; Olivari, D.

doi:10.1016/s0167-6105(96)00089-x

Cited by 95 publications

(47 citation statements)

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“…As expected for this shear loading, the two rivulets are of equal height, profile and growth rate. This prediction is consistent with the previous experimental analysis of Bosdogianni and Olivari (1996), who indicate that the rivulets "form on the upper and lower surface of the cylinder at positions roughly corresponding to the expected separation points". The results are also in good agreement with the only other computational results available for the same problem (Lemaitre et al, 2007) illustrated in Fig.…”

Section: A) Shear and Surface Tension Loadingsupporting

confidence: 92%

“…In experiments, it has been observed that the thin film of rain water present on the cable normally accumulates to form two rivulets near the separation points of the external aerodynamic field around a dry cable (Bosdogianni and Olivari, 1996). Other studies have concentrated on specific aspects of the location and dynamics of the rivulet motion, to identify the effect of the rivulets on the external aerodynamic field and vice versa.…”

Section: Introductionmentioning

confidence: 99%

“…The latter investigations can be broadly separated into two distinct classes, namely those where the rivulet is replaced by a fixed, static, rigid protuberance, i.e. an 'artificial rivulet' (Matsumoto et al, 1995, Bosdogianni andOlivari, 1996) and those where a film of water is sprayed onto the surface of the cable and the rivulets are allowed to form 'naturally' (Flamand, 1995, Cosentino et al, 2003, Verwiebe and Ruscheweyh, 1998, Gu and Du, 2005, Wang et al, 2005. Both classes indicate that the presence of the rivulet on the upper surface is largely responsible for the vibration (Matsumoto et al, 1995), while the latter class also indicates that when free to do so, the rivulets oscillate circumferentially at the same frequency as that with which the cable vibrates.…”

Section: Introductionmentioning

confidence: 99%

“…Differentiating between the effect of circumferential oscillation and rivulet position in the 'artificial rivulet' investigations has, however, proven more difficult and led to discrepancies in the literature. In particular Verwiebe and Ruscheweyh (1998) determined that the circumferential oscillation of the rivulet is a primary cause of RWIV, whereas Bosdogianni and Olivari (1996) suggest that it is rivulet location and not its profile or circumferential oscillation which initiates the response.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

New developments in rain–wind-induced vibrations of cables

Taylor¹,

Robertson²,

Wilson³

et al. 2010

Proceedings of the Institution of Civil Engineers - Structures

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On wet and windy days, the inclined cables of cable-stayed bridges can experience large amplitude, potentially damaging oscillations known as rain–wind-induced vibration (RWIV). RWIV is believed to be the result of a complicated non-linear interaction between rivulets of rain water that run down the cables and the wind loading on the cables from the unsteady aerodynamics; however, despite a considerable international research effort, the underlying physical mechanism that governs this oscillation is still not satisfactorily understood. An international workshop on RWIV was held in April 2008, hosted at the University of Strathclyde. The main outcomes of this workshop are summarised in the paper. A numerical method to investigate aspects of the RWIV phenomenon has recently been developed by the authors, which couples an unsteady aerodynamic solver to a thin-film model based on lubrication theory for the flow of the rain water to ascertain the motion of the rivulets owing to the unsteady aerodynamic field. This novel numerical technique, which is still in the relatively early stages of development, has already provided useful information on the coupling between the external aerodynamic flow and the rivulet, and a summary of some of the key results to date is presented.

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Section: A) Shear and Surface Tension Loadingsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

New developments in rain–wind-induced vibrations of cables

Taylor¹,

Robertson²,

Wilson³

et al. 2010

Proceedings of the Institution of Civil Engineers - Structures

View full text Add to dashboard Cite

show abstract

“…Naturally, it is expected to intensify the vibration [30,32,33]. Contrary to this explanation, Bosdogianni and Olivari do not believe the motion of liquid rivulets has any influence on the instability [34]. More research on the second triggering factor, in fact, identified three fundamentally different excitation mechanisms associated with along-wind, cross-wind and mainly across-wind cable vibration under rain and wind conditions [35,36].…”

Section: Rain-wind Induced Vibrationmentioning

confidence: 99%