[1] Zhu Jinsong, Xiao Rucheng, He Lizhi,. Probability evaluation method for cable safetyof long-span cable-stayed bridges [J]. Journal of Southeast University (English Edition), 2007, 23 (1): 92-97. [doi:10.3969/j.issn.1003-7985.2007.01.019]

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Probability evaluation method for cable safetyof long-span cable-stayed bridges()

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

Volumn:

23

Issue:

2007 1

Page:

92-97

Research Field:

Traffic and Transportation Engineering

Publishing date:

2007-03-30

Info

Title:

Probability evaluation method for cable safetyof long-span cable-stayed bridges

Author(s):

Zhu Jinsong¹;  Xiao Rucheng²;  He Lizhi³

¹School of Civil Engineering, Tianjin University, Tianjin 300072, China
²Department of Bridge Engineering, Tongji University, Shanghai 200092, China
³The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100022, China

Keywords:

safety factor;  probability;  evaluation;  cable-stayed bridge

PACS:

U447

DOI:

10.3969/j.issn.1003-7985.2007.01.019

Abstract:

A method of cable safety analysis is proposed for safety evaluation of long-span cable-stayed bridges.The Daniels’ effect and the probability of broken wires in the cable are introduced to develop the cable strength model and the reliability assessment technique for long-span cable-stayed bridges based on the safety factors analysis of stay cables in service.As an application of the proposed model, the cable safety reliability of the cable No.25 of Zhaobaoshan cable-stayed bridge in China is calculated.The effects of various parameters on the estimated cable safety reliability are investigated.The results indicate that the proposed method can be used to assess the safety level of stay cables in cable-stayed bridges effectively. The Daniels’ effect should be taken into account for assessment, and the probability of broken wires can be used to simulate the deterioration of stay cables in service.

References:

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[6] Daniels H E.The statistical theory of the strength of bundles of threads:part Ⅰ[C]//Proceedings of the Royal Society of London:Series A.London:The Royal Society of London, 1945, 183:405-435.
[7] Betti R, Yanev B.Conditions of suspension bridge cables:the New York city case study[C]//TRB Annual Meeting.New York:Transportation Research Board, 1999:105-112.
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[10] Chang C C, Chang T Y P, Zhang Q W.Ambient vibration of long-span cable-stayed bridge[J].Journal of Bridge Engineering, 2001, 6(1):46-53.
[11] Zhu Jinsong, Xiao Rucheng.Safety analysis of stayed cables of large-span cable-stayed bridges[J].Journal of Chinese Civil Engineering, 2006, 39(9):107-112.(in Chinese)

Memo

Memo:

Biography: Zhu Jinsong(1975—), male, doctor, associate professor, jszhu@tju.edu.cn.

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