Browse > Article
http://dx.doi.org/10.5762/KAIS.2017.18.12.150

Study on Stress Recovery Length of 7-Wire Strand due to Local Damage  

Seo, Dong-Woo (Korea Institute of Civil Engineering and Building Technology (KICT))
Kim, Byung-Chul (Korea Institute of Civil Engineering and Building Technology (KICT))
Jung, Kyu-San (Korea Institute of Civil Engineering and Building Technology (KICT))
Na, Wongi (Korea Institute of Civil Engineering and Building Technology (KICT))
Park, Ki-Tae (Korea Institute of Civil Engineering and Building Technology (KICT))
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.12, 2017 , pp. 150-156 More about this Journal
Abstract
This study examined the stress recovery length due to the local damage of a 7-wire strand, which is applied widely to PSC (Post Tensioned Concrete) bridges and cable-stayed bridges. The 7-wire strand is a multiple stranded steel of PC prestressing strand. Owing to the nature of the material, it is damaged continuously after completion with corrosion being the main cause of damage. On the other hand, due to its structural characteristics, it is difficult to grasp the degree of damage inside the cable and the pattern of stress variation. In the case of cables applied to bridges, the parts that are susceptible to corrosion are generated depending on the water supply and installation shape, which may cause local damage. This study analyzed the tendency of performance degradation and stress recovery length according to local damage of a 7-wire strand, which is applied mainly to bridge post-tensioning or stay cables. This study developed a computer-based simulation model that was validated with experimental results. The model developed in this study can be used to evaluate the safety level and estimate the remaining life span of P SC bridges or cable-stayed bridges.
Keywords
Bridge Cables; Local Damage; FEA; 7-Wire Strand; Stress Recovery Length;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Y. J. Chiang, "Characterizing simple stranded wire cables under axial loading," Journal of Finite Elements in Analysis and Design, Vol. 24, pp. 49-66, 1996. DOI: https //doi.org/10.1016/S0168-874X(97)80001-E   DOI
2 W. G. Jiang, J. L. Henshall, "The analysis of termination effects in wire strand using the finite element method," Journal of Strain Analysis, Vol. 34, No. 1, pp 31-38, 1999. DOI: https //doi.org/10.1243/0309324991513605   DOI
3 G. Shibu, K. V. Mohankumar, S. Devendiran, "Analysis of a three layered straight wire rope strand using finite element method," Proceedings of the World Congress on Engineering, 2011.
4 I. Gerdemeli, S. Kurt, A. S. Anil, "Analysis with finite element method of wire rope," Faculty of Mechanical Engineering, Istanbul Technical University, 2012.
5 ANSYS, Inc. ANSYS Workbench 11 User's Guide. 2009.
6 K. T. Park, O. I. Kwon, J. H. Lee, D. W. Seo, W. G. Na, J. S. Park, T. H. Kim, "Evaluation techniques for cable system/earth anchor/steel corrosion by micro and macro measured data," Internal Report, Korea Institute of Civil Engineering and Building Technology, 2016.
7 MIDAS, Inc., MIDAS FEA User's Guide, 2017.