[1] Liu Xiaoling, Huang Qiao, Ren Yuan, Fan Yehua, et al. Extraction of cable forces due to dead loadin cable-stayed bridges under random vehicle loads [J]. Journal of Southeast University (English Edition), 2015, 31 (3): 407-411. [doi:10.3969/j.issn.1003-7985.2015.03.019]

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Extraction of cable forces due to dead loadin cable-stayed bridges under random vehicle loads()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

31

Issue:

2015 3

Page:

407-411

Research Field:

Traffic and Transportation Engineering

Publishing date:

2015-09-20

Info

Title:

Extraction of cable forces due to dead loadin cable-stayed bridges under random vehicle loads

Author(s):

Liu Xiaoling¹;  Huang Qiao¹;  Ren Yuan¹;  Fan Yehua²;  Chen Ping²

¹School of of Transportation, Southeast University, Nanjing 210096, China
²Nanjing No.3 Yangtze River Bridge Co., Ltd, Nanjing 211808, China

Keywords:

cable force;  health monitoring;  temperature effect;  distribution fitting

PACS:

U446.2

DOI:

10.3969/j.issn.1003-7985.2015.03.019

Abstract:

To extract the cable forces due to dead load in cable-stayed bridges from the monitoring data, the effects of various factors are eliminated step by step by different statistical methods. The information of cable tension sensors recorded by the health monitoring system of Nanjing No.3 Yangtze River Bridge is taken as an example. Temperature effects are eliminated by linear fitting analysis; a 5-level wavelet de-noising method is applied to eliminate the noise signal by the wavelet basis function of DB8. The rest cable force data is tested by the method of extreme-value type-Ⅲ distribution, and the fitted location parameter is selected as the cable force due to dead load. The results show that the cable force has a linear relationship with temperature. Sometimes, the temperature effect is significant. Noise effect accounts for a small percentage, and the vehicle loads effect has twice the temperature effect on the traffic volume in 2007. The calculation results of other stay cables verify the reliability and validity of the proposed method.

References:

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[4] Zonta D, Bruschetta F, Zandonini R, et al. Analysis of monitoring data from cable-stayed bridge using sensor fusion techniques [C]//Proceedings of SPIE. San Diego, CA, USA, 2013:869229-1-869229-8.
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Memo

Memo:

Biographies: Liu Xiaoling(1988—), female, graduate; Huang Qiao(corresponding author), male, doctor, professor, qhuanghit@126.com.
Foundation items: The National Natural Science Foundation of China(No.51208096), the Major Scientific and Technological Special Project of Jiangsu Provincial Communications Department(No.2014Y02).
Citation: Liu Xiaoling, Huang Qiao, Ren Yuan, et al.Extraction of cable forces due to dead load in cable-stayed bridges under random vehicle loads[J].Journal of Southeast University(English Edition), 2015, 31(3):407-411.[doi:10.3969/j.issn.1003-7985.2015.03.019]

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