Study on Pretensioning Force of Wrapping Wires for Suspension Bridge Cables

Abstract:

Article Preview

The question of the pretensioning force of the wrapping wires for a suspension bridge is one of the important subjects. It could prevent the main cable from eroding by air or chemicals. And it must have some loss under the influence of dead loading, each mobile load and environment[1]. Now, the research of wrapping wire of the main cable is not much at home and abroad. And wrapping wire tension is mainly obtained depending on engineering experience. This paper has an experiment about the wrapping wire of Yangmingtan Bridge in Harbin to draw conclusions that wrapping wires tension which is 2m far from the cable clips is reduced extensively, more than 80%. But the residual tension, 8m from the cable clips, is about 35% of the initial tension. In addition, the wrapping wires tension which is about 93cm far from pre-wrapped wire-loops remains stable. Finally, starting from calculation theory, the paper puts forward that the wrapping wire tension should be 2.0kN.

Info:

Periodical:

Advanced Materials Research (Volumes 446-449)

Edited by:

Xiuli Du, Jianjun Zheng, Weiming Yan, Yue Li and Jianwei Zhang

Pages:

1283-1288

Citation:

S. Zhang and Q. S. Sun, "Study on Pretensioning Force of Wrapping Wires for Suspension Bridge Cables", Advanced Materials Research, Vols. 446-449, pp. 1283-1288, 2012

Online since:

January 2012

Export:

Price:

$41.00

[1] J. Wiley & sons, A practical treatise on suspension bridges, Vol. 23(2010), p.235.

[2] Jing Sunfen, Perserving Williamsburg's Cables, Forgin Bridges, (1997), in Chinese.

[3] Cheng Jianxin, S-shape Wire Wrapping Techniques for Suspension Bridge of Runyang Bridge, Bridge Construction, (2004), in Chinese.

[4] Zhou Junhui, Anticorrosive Technology of Suspension Bridge's Cable, China Communications Press, (2007), in Chinese.

[5] Fang Mingshan, The calculation of wrapping wires of Canghai Bridge, East China Highway, (1999), in Chinese.

[6] Tang Maolin, The calculation of pretensioning force of wrapping wires for Xihoumen Bridge, Bridge Construction, (2009), in Chinese.

[7] Wilhelm Hildenbrand, Cable-making for suspension bridges, (2007), p.14.

[8] Shibuya, Anticorrosion Enginerring of Shiratori Bridge, Bridge Foundation, Vol. 445(1998), p.468.

[9] Wan Guochao, Protection engineering of main cables for Shiratori Bridge, Journal of South China University of Technology(Natural Science), (1999), in Chinese.

[10] Ma Wenhua, Design of the Wrapping Wire of the Main Cables in Suspension Bridges, Journal of South China University of Technology (Natural Science), (1997), in Chinese.