Title: Dynamic Loading Tests and Vehicle-bridge Coupling Vibration Analysis of Concrete-filled Steel Tube Stiffening-frame Reinforced X-style Arch Bridge
Abstract:Dynamic loading tests were made over a railway concrete-filled steel-tube stiffening-frame reinforced X-style arch bridge with the span of 140m.The free-vibration characteristics were tested with the ...Dynamic loading tests were made over a railway concrete-filled steel-tube stiffening-frame reinforced X-style arch bridge with the span of 140m.The free-vibration characteristics were tested with the microseism method.The dynamic responses of strains,displacements and accelerations of the structure were tested under the dynamic loads of the train passing through the bridge with different uniform velocities and the train braking at a specifed point on the bridge with some requied velocities.The test results of the real bridge and the calculated results of the train-bridge coupling vibration were analyzed together.It is demonstrated: The bridge is of sufficient structural strength,vertical rigidity and transverse rigidity,and is of entirely good dynamic characteristics;the passing train has the impacting function on the structure;the dynamic responses and coefficients measured on site match well with theoretical calculation,both show the same regularity against the increasing traveling velocities of the train;the passing trains have good safety and comfort performance;this type of bridge is suitable for long-span railway bridges.Read More
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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