20 results. Showing 1 to 20
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.
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.
Effects of the wide-body suspension bridge auxiliary structure on ...
The specific influence on the aerodynamic performance and flutter critical wind velocity have been studied by setting different railing ventilation rates. The results show that: the subsidiary structures of the main beam have an adverse effect on the stability of bridge flutter.
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 ...
Then, the dynamic characteristics of each of the tower-cable-deck systems are analyzed to study the modal properties of TTTS suspension bridge in various deck erection stages. The results demonstrate that the natural frequencies of each erection stage are closely distributed in the low-order range.
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.
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.
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.
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.
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.
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.
Investigation of torsion angle measurement method in spatial cables of ...
A scale-reduced suspender bridge model was fabricated and tested to obtain the cable angle. Based on the deformation characteristics of the main cable, a coordinate method and angle method to calculate the spatial cable torsion angle in suspender bridges are developed.
Influence of catwalk design parameters on the galloping of ... - Extrica
The parameters of the catwalk which are favorable for suppressing the galloping of the main cables are determined, which establish a good guideline for the galloping-resistant design of the catwalk-main cable system on suspension bridges.
Investigation of torsion angle measurement method in spatial cables of ...
A scale-reduced suspender bridge model was fabricated and tested to obtain the cable torsion angle. Based on the deformation characteristics of the main cable, the coordinate method and angle method to calculate the spatial cable torsion angle in suspender bridges are developed.
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 ...
This paper selects the asymmetric long-span single pylon suspension bridge located in Yunnan Province is employed in this research. The main span of the bridge is 780 m, and the rise span ratio of the main cable is 1/11.
Aerodynamic performance analysis of wind-sand flow on suspension bridge ...
Zhang et al. analyzed the aerostatic instability mode of a three-tower suspension bridge named Maanshan Bridge based on the method of strain energy, and the results show that the changing rule of the total strain energy is dominated by the main cable and the initial wind attack angles [7].
The mechanical behavior of a long-span steel-box girder ... - Extrica
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.
Free vibration analysis of suspended super long span CFRP cables
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.
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.
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