Keynote Speakers >> Dr. Xu Jun
Dr. Xu Jun
Dr. Xu Jun
Affiliation: Department of bridge engineering Tongji University, Shanghai, China

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Xu Jun, born in 1978, received his BSc(Eng.) degree from Southwest Jiaotong University in 2000, and furthermore received his MSc(Eng.) degree from the same university in 2003 and his PhD from Tongjing University in 2007. After his graduation, he started his career as a lecturer in Tongjing University. His research field includes the evaluation and repairing of bridges, bridge inspection and health monitor. Meanwhile, he has chaired or participated many high-level research projects during these years.
Title: Corrosion Effects of Stayed Cables
Keywords: stayed cables; tensile capacity; corrosion
Abstract: That stayed cables which are vulnerable to corroding have drawn enough attention of bridge owners ever since the cable fracture of Haiying Bridge. Corrosion in cables is usually allowed to develop for lack of accurate detection method or rather for lack of matured method of assessing tensile capacity of existing stayed cables. The main factors affect the tensile capacity of corroded stayed cables include cable specifications, mechanical properties of wires, extent of corrosion, and corrosion extent distribution among cable section. The last two factors are especially in need of systematic research. Therefore, this paper, taking advantage of the project of displacing stayed cables of Shimen Bridge, attempts an investigation of the two factors from the following perspectives: The investigation starts with tensile tests of corroded cable wires of the bridge to measure the mechanical property of the wires and then makes an empirical fitting curve according to the mechanical change caused by corrosion. Severely corroded stayed cables are cut into several parts to expose cross sections, every wire in which is numbered for illustrating of distribution corrosion extent in cable sections. Thus, radial distribution law of corroded cable wires is well examined. In light of the above investigation, a model is proposed to assess tensile capacity of stayed cables based on the series-parallel connection system. To verify practicality of the theory governing the investigation, one specimen made from a corroded stayed cable section close to the cable anchor on one end is tensioned and assessed using the assessing method proposed in this paper to see if the method is applicable to assessment of tensile capacity of other corroded stayed cables.
Publication
IOP Conference Series: Materials Science and Engineering (MSE)
ISSN: 1757-8981
Index: CPCI-S (ISTP), Google Scholar, CNKI, EI
Important Dates
Paper Submission Due: Oct.25.2018
Conference:December November 17-18.2018
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