吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊2): 170-173.

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Prediction method for cable tension state of cable-stayed bridges based on grey system theory in cold areas

TAN Guo-jin, WANG Long-lin, CHENG Yong-chun   

  1. College of Transportation, Jilin University, Changchun 130022, China
  • Received:2011-01-25 Online:2011-09-30 Published:2011-09-30

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Abstract:

Based on grey relational analysis of grey system theory,the prediction model of cable tension state of cable-stayed bridges was established.The grey correlation of cable tension of the whole bridge was taken as the evaluation index of cable tension state in this model.Because of the circumstance temperature difference which cables stand in cold areas,the influence degree of the circumstance temperature difference on cable tension was analyzed.With the time series of temperature correlation to prediction model of cable tension state being weighted,the influence of circumstance temperature difference in the prediction model was rejected,and the prediction accuracy had also been increased.It makes that the prediction model can be suitable for cable tension state prediction in cold areas.Finally,a cable tension monitoring engineering of a cable-stayed bridge is taken for example,and the correctness and feasibility of the prediction method are verified.

Key words: bridge engineering, cable-stayed bridge, cold area, cable tension state, prediction method, grey system theory

CLC Number: 

  • U443.38


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