Stonecutters Bridge – Detailed Design

Falbe-Hansen, Klaus; Hauge, Lars; Kite, Steve

doi:10.2749/222137804796291719

Cited by 13 publications

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“…In contrast, the force correlation on a twin-box girder (TBG) or parallel bridge decks is still unrevealed. This study is inspired by the recent prevalence of TBGs (Falbe-Hansen et al, 2004; Lee et al, 2012) and the construction of a bridge adjacent to another one (Viola et al, 2005). For these decks, the leeward deck is immersed in the wake of the windward deck.…”

Section: Introductionmentioning

confidence: 99%

Span-wise coherence of fluctuating forces on twin bridge decks and the turbulence effect

Xia

2019

Advances in Structural Engineering

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Unlike the adequate researches on a single-box girder, the understanding of span-wise force correlation on twin decks is limited. A sectional model pressure testing of a widely slotted twin-box girder has been carried out in the background of a 5000-m-long bridge. Three grid configurations separated the effect of turbulence intensity and integral scale. Seven test sections were set on the model with totally 532 pressure taps. After the correction of pressure distortion, the correlation coefficients and integral scales of forces were compared on the leeward and the windward decks. Root coherence of lift was analyzed in detail at several separation distances. Pressure signals were used to explain why force coherence is stronger than flow and why “low frequency curve” phenomenon occurs. Considering the shortage of existing expressions, a simple but efficient form was proposed which can fit the coherence on the leeward, the windward, and the whole decks. The parameters in different flows can be reconstructed by linear functions which benefits new model’s application. In the final, the influences of turbulence intensity and integral scale on force coherence were illustrated.

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Section: Introductionmentioning

confidence: 99%

Span-wise coherence of fluctuating forces on twin bridge decks and the turbulence effect

Xia

2019

Advances in Structural Engineering

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“…In all kinds of flutter control measures, the passive aerodynamic measure has been proven the most reliable and efficient one. As an effective passive aerodynamic flutter controlling measure, central-slotted box girder section has gradually been adopted in the preliminary design scheme for long-span bridges, such as in the Xihoumen Bridge [1], Stonecutters Bridge [2], Gibraltar Bridge [3], and so on.…”

Section: Introductionmentioning

confidence: 99%

Flutter control effect and mechanism of central-slotting for long-span bridges

Yang

Huang

2007

Front. Archit. Civ. Eng. China

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The flutter control effect and mechanism of central-slotting, which have gradually been adopted in the design and construction of long-span bridges as an effective flutter controlling measure, were investigated with theoretical analysis and wind tunnel test. Five basic girder cross-sections representing five typical aerodynamic configurations were selected and central-slotted with two different slot widths. Then, a series of sectional model tests and theoretical analyses based on the two-dimensional three-degrees-offreedom coupling flutter analysis method (2 dimension-3 degrees of freedom method, 2d-3DOF method) were carried out to investigate the aerodynamic performance, flutter mechanism and flutter modality of the five basic sections and their corresponding central-slotted sections. The results show that central-slotting can not always improve the aerodynamic stability of bridge structure. The control effect of central-slotting depends on the aerodynamic configuration of the original girder section and the corresponding central-slotting width. If the original section is inappropriate or the slot width is unsuitable, central-slotting will even deteriorate the structural flutter performance. Theoretical investigations indicated that the differences in flutter control effects come from the different formation and evolution of aerodynamic damping, and flutter modality especially the participation level of heaving motion also has a significant influence on the control effect of central-slotting.

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2019

Bridge Design

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Stonecutters Bridge – Detailed Design

Cited by 13 publications

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Span-wise coherence of fluctuating forces on twin bridge decks and the turbulence effect

Span-wise coherence of fluctuating forces on twin bridge decks and the turbulence effect

Flutter control effect and mechanism of central-slotting for long-span bridges

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