20 results. Showing 1 to 20
Effects of the wide-body suspension bridge auxiliary structure on ...
With the emergence of long-span bridges, lightweight and softness have become the development direction of the bridge structures, and the aspect ratio of bridges has also increased. Therefore, flat steel box beams are widely used in long-span cable-stayed bridges and suspension bridges.
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.
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.
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.
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.
Modal analysis of the triple-tower twin-span suspension bridge in deck ...
Modal analysis of large span suspension bridge in different construction stages has to be carried out for the aerodynamic instability analysis.
Aerodynamic admittance influence on buffeting performance of suspension ...
These conclusions are particularly relevant to long-span suspension bridges with relatively streamlined deck cross-sections on buffeting performance in the natural wind. 1) The aerodynamic admittance function identification result for a bridge deck is closely related to wind attack angle.
1300. Modal analysis of cable-tower system of twin-span suspension bridge
a four-span suspension bridge with two main 2000 m spans and pointed out that live load deflection of the girder can be reduced to less than 1/200 of the main span length by stiffening the bending coefficient of the center tower.
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.
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 flexi bility method and fiber section is used to simulate the elastic -plastic behavior of bridge pylon under strong ground motion.
1091. Free vibration analysis of suspended super long span ... - Extrica
An example of a six-lane single-span highway suspension bridge is used to study the vibration frequency characteristics by changing its span and sag of the main cable. The modulus of elasticity
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 ...
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.
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.
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
Aerodynamic performance analysis of wind-sand flow on riding-type ...
Hangers of suspension bridges may suffer the impact from wind-sand flow and be damaged. In this study, the riding-type hangers with four strands which are the commonly used hanger of long-span suspension bridges are taken as an example to investigate the influence of wind-sand flow on the hangers.
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.
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.
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.
The mechanical behavior of a long-span steel-box girder during the ...
At present, the hybrid girder structure is mainly used in two types of bridges, namely cable-stayed bridges and self-anchored suspension bridges [1], while its application in continuous rigid frame bridges and even continuous girder bridges are relatively rare.
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