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http://dx.doi.org/10.14346/JKOSOS.2014.29.2.038

Evaluation of Cable Tension Forces Using Vibration Method for a Cable-stayed Bridge under Construction  

Cho, Soojin (School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology)
Yun, Chung-Bang (School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology)
Sim, Sung-Han (School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology)
Publication Information
Journal of the Korean Society of Safety / v.29, no.2, 2014 , pp. 38-44 More about this Journal
Abstract
When a cable-stayed bridge is under construction, the cable tension that changes according to the construction phase is the index indicating the proper construction management. In this study, the vibration method using the least-square estimation has been implemented to monitor changing tensions of two multi-strand cables of a cable-stayed bridge under construction. The test bridge is Hwamyung Bridge in Korea with a prestressed concrete box girder. The field tests are executed during the second tensioning stage just after the installation of the key segment. The tensions of two cables are measured before and after the tensioning and 5 days later (i.e., after finishing the tensioning of all cables). The accuracy of the estimated tensions by the vibration method has been improved by employing proper effective lengths of the cables. The measured tensions are compared with the result of the lift-off tests and design tensions. The vibration method shows very good performance in monitoring the changing tensions according to the construction phase with minimal error.
Keywords
cable tension; vibration method; cable-stayed bridge; construction management; lift-off test;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 H. Zui, T. Shinke and Y. Namita, "Practical Formulas for Estimation of Cable Tension by Vibration Method," J. Struct. Eng-ASCE., Vol. 122, No. 6, pp. 651-656, 1996.   DOI   ScienceOn
2 G. Wang, M. L. Wang and Y. Zhao, "Application of EM Stress Sensors in Large Steel Cables," Smart Struct. Sys., Vol. 2, No. 2, pp. 145-154, 2006.
3 T. Shimada "Estimating Method of Cable Tension from Natural Frequency of High Mode," Proc. JSCE, Vol. 501/1-29, pp. 163-171, 1994.
4 Irvine, M.. Cable Structures. Dover Publications Inc., New York, NY, 1981.
5 J. C. Russell and T. J. Lardner, "Experimental Determination of Frequencies and Tension for Elastic Cables", J. Eng. Mech.-ASCE, Vol. 124, No. 10, pp. 1067-1072, 1998.   DOI   ScienceOn
6 B. H. Kim and T. Park, "Estimation of cable tension using System Identification Technique: II. Theory", J. the Korean Society of Civil Engineers, Vol. 25, No. 4A, pp. 661-668, 2005.
7 J.-G Yoon, J. Sohn and S.-P. Chang, "A Study on Tension Measurement for Cable-supported Bridge", Proc. KSCE, pp. 117-120, 1999.
8 B. H. Kim and T. Park, "Estimation of Cable Tension using System Identification Technique: II. Experiments and Applications", J. the Korean Society of Civil Engineers, Vol. 25, No. 4A, pp. 669-675, 2005.
9 Y. S. Park, S. M. Choi, B. G. Lee and M. J. Kim, "Estimation of Stay Cable Tension using String Vibration Theory", Journal of Korean Society of Hazard Mitigation, Vol. 9, No. 2, pp. 17-22, 2009.   과학기술학회마을
10 S. Ahn, M.-H. Kim and I.-B. Kim, "Estimation of Stay Cable Tension by Ambient Vibration Measurement in Seohae Cable-stayed Bridge", Proc. KSCE, pp. 1-4, 2001.
11 K.-S. Kim, E.-K. Cho, C.-S. Lee, H.-K. Jeon and M.-S. Lee, "Design of Prestressed Concrete Cable-Stayed Bridge (Hwamyung Grand Bridge)", Magazine of the Korea Concrete Institute, Vol. 19, No. 5, pp. 58-61, 2007.   과학기술학회마을