Research on method of vibration analysis of fan bridge truss in operation

Author

Qu, Tiejun ; Wang, Xianyun ; Xiong, Yinsheng

Author_Institution

Coll. of Archit. & Civil Eng., North China Univ. of Technol., Beijing, China

fYear

2011

fDate

22-24 April 2011

Firstpage

1472

Lastpage

1476

Abstract

To research the effect of fans of direct air cooling system on the fan bridge truss when the fans are in operation, 1:1 full-scale fan test model is designed. By using strain resolution method, the oscillation forces in operation are measured, including bending moment, torsion moment and centrifugal force. Accordingly, the formula is provided. A thermal power plant of direct air cooling system being used is selected. Theoretically, analyze the vibration of fan bridge truss by the formula of oscillation forces obtained from the test. Then measure the vibration of fan bridge truss resulted from fans in operation on the spot. Compared the theoretical analysis with the measured data, there is small difference. So the reasons for that are analyzed. And more research work shall be done for perfection of the fan bridge truss calculation theory.

Keywords

bending; bridges (structures); cooling; fans; supports; thermal power stations; vibrations; bending moment; centrifugal force; direct air cooling system; fan bridge truss; full-scale fan test model; oscillation forces; strain resolution method; theoretical analysis; thermal power plant; torsion moment; vibration analysis; Bridges; Fans; Force; Oscillators; Vibration measurement; Vibrations; calculation methods; fan bridge truss; oscillation forces; spot measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on

Conference_Location

Lushan

Print_ISBN

978-1-4577-0289-1

Type

conf

DOI

10.1109/ICETCE.2011.5776492

Filename

5776492