The Research And Application Of Frequency Method In Concrete Filled Steel Arch Bridge Suspender Cable Tension Test

Frequency method is widely used in cable structure of the project control and health monitoring, accompanied by a large number of concrete filled steel tubular arch bridge suspenders began to slowly appear Cable Force for the boom. As Hanger Steel Arch in the practical application of complexity, the frequency method to measure the boom Concrete Arch Bridge Cable Force research has lagged far behind in engineering practice. Frequency method in testing concrete filled steel tubular arch bridge suspender Hanger force such a short time is not very high precision, so the further research needed. This increased frequency of testing the steel from the concrete arch bridge suspender cable force accuracy issues at the establishment of a suspender cable force calculation model test and improve a variety of computing model formula. This article caught flexible cable boom and the essential difference between model and optimization in the establishment of the formula calculation to take into account the boom boom bending stiffness and rigidity of the anchor cable force first test accuracy. Boom length of the correction factor is introduced and the use of Hanning window processing test signals, so that power frequency testing the accuracy of Hanger has been further improved. Calculation model and the obtained formula applied to the North Bridge Yongan Hanger analysis and force measurement were analyzed and compared the results found for concrete filled steel tube arch bridge suspender cable tension test model with fixed ends when the calculation model used more in line with engineering reality. In the calculation model with fixed ends to consider the revised boom length of test values are less than 7% error, for in terms of concrete filled steel tubular arch bridge suspender has been able to meet the needs of engineering practice.