20 results. Showing 1 to 20
Buffeting performance of long-span suspension bridge based on ... - Extrica
The long-span suspension bridge is about to appear in large numbers in the mountainous region, and hence its buffeting performance in extreme strong wind can provide references for other bridges in a similar region. In this paper, the long-span suspension bridge and wind measure system were introduced.
Effects of the wide-body suspension bridge auxiliary structure on ...
The Cuntan Yangtze River Bridge is a double-tower and single-span suspension bridge, with the entire length of 1600 m, the main bridge span arrangement (250+880+250) m, the span ratio of 1/8.8, the aspect ratio of stiffening girder of 12, the beam height of 3.5 m, and the beam width of 38 m.
Effect of stabilizer on flutter stability of truss girder suspension ...
In this paper, a long-span suspension bridge with steel truss girder is select as the study issue. At first, the flutter responses of the truss girder and the effects of various stabilizers on flutter stability are investigated through section model wind tunnel tests at a scale of 1:48.
Flutter performance optimization of a long-span truss girder bridge in ...
This paper studies the flutter performance and the effects of various aerodynamic countermeasures on the flutter improvement of a 1060 m truss-stiffened girder suspension bridge spanning mountainous canyon by wind tunnel tests of the sectional model and full-bridge model.
Aerodynamic admittance influence on buffeting performance of suspension ...
Taking the Cuntan Yangtze bridge as an example, the differences of buffeting performance with three kinds of aerodynamic admittance functions were analyzed in time domain via a suspension bridge model built on ANSYS platform.
Modal analysis of the triple-tower twin-span suspension bridge in deck ...
The first triple-tower four-span suspension bridge, the Yingwuzhou Yangtze River Bridge, will be finished at the end of this year. The New Millennium Bridge in Korea, and the Chacao Channel Bridge in Chile, which will be expected to be completed in 2018 and 2019 on scheduler respectively, are also triple-tower suspension bridges.
1530. Wind oscillation analysis of a suspension bridge ... - Extrica
Among bridges, the suspension bridge has the one of the longest spans and one of the most graceful exteriors. Many suspension bridges have been built worldwide since the first suspension bridge, the Brooklyn bridge, was built in 1883. Today, a suspension bridge can have a span of more than 1,000 m.
Wind oscillation analysis of a suspension bridge coupled with CFD
This study conducted a CFD-2D coupled analysis of a suspension bridge subjected to wind loads. Previous studies found that rotational oscillation was due to differences in the restoring force at hanger cables and could generate torsional oscillations.
Investigation of torsion angle measurement method in spatial cables of ...
Spatial cables in suspension bridges may twist between two adjacent suspension points due to transverse tension. To determine the spatial torsion angle of the cables, a scale-reduced suspender bridge model was fabricated and tested in this study. The cable torsion angles of the bridge model under different loading cases were obtained and presented.
Flutter performance optimization of a long-span truss girder bridge in ...
In this paper, the flutter performance of a steel truss-stiffened girder suspension bridge in a mountainous canyon and the influence of various aerodynamic countermeasures on the improvement of flutter stability using wind tunnel tests of the sectional model and full-bridge model was studied.
Aerodynamic performance analysis of wind-sand flow on suspension bridge ...
suspension bridges with CFRP cables based on the Japan Akashi-Kaikyo Bridge, and the results show that the use of the CFRP cables can improve the wind resistance stability of suspension bridges. Zhang et al. analyzed the aerostatic instability mode of a three-tower suspension bridge
Investigation of torsion angle measurement method in spatial cables of ...
Spatial cables in suspension bridges may twist between two adjacent suspension points due to transverse tension. To determine the spatial torsion angle of the cables, a scale-reduced suspender bridge model was fabricated and tested in this study.
Tension estimation of hangers with shock absorber in suspension bridge ...
Suspension bridge is a kind of cable supported bridges, which consists of two main cables, several vertical hangers and a main girder. Hangers are the critical components in suspension bridges to transfer load from the main girder to the main cables and towers.
Effects of the wide-body suspension bridge auxiliary ... - Extrica
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Aerodynamic performance analysis of wind-sand flow on riding-type ...
In order to explore the influence of wind-sand flow on the hangers, the wind-sand flow field around the riding-type hangers of a long-span suspension bridge is simulated within the FLUENT software on the basis of the numerical simulation of computational fluid dynamics.
Free vibration analysis of suspended super long span CFRP cables
The dynamic characteristics of an assumed isolated CFRP main cable are studied. The section area of the CFRP cable is determined for suspension bridge in different spans and sag-span ratios based on the principle of limit design at a given security coefficient.
Investigation of the aerodynamic characteristics of single-box girders ...
The optimization of the main girder of a bridge can effectively improve the aerodynamic performance of the bridge. For rectangular cross-section structures without wind nozzles, their aerodynamic characteristics and wake characteristics depend largely on the flow characteristics of the separated flow from the leading edge [1-5].
Seismic response analysis of single-pylon suspension bridge under ...
As the main vulnerable component of suspension bridge under earthquake, the Non-linear Beam-column Element based on flexibility method and fiber section is used to simulate the elastic-plastic behavior of bridge pylon under strong ground motion.
Influence of catwalk design parameters on the galloping of ... - Extrica
To study the effects of catwalks design parameters on the galloping of the main cable during suspension bridge construction, the main cable of a long-span suspension bridge constructed in the East China Sea is studied by using the computational fluid dynamics (CFD) software FLUENT.
Practical formula to calculate tension of vertical cable with hinged ...
Vertical cables are widely used in the tied-arch bridges and suspension bridges as the vital components to transfer load. It is very important to accurately estimate the cable tensions in the cable supported bridges during both construction and in-service stages.
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