Browse > Article

A Study on Tension for Cables of a Cable-stayed Bridge Damper is Attached  

Park, Yeon Soo (전남대학교 토목공학과)
Choi, Sun Min (전남대학교 토목공학과)
Yang, Won Yeol (전남대학교 토목공학과)
Hong, Hye Jin (전남대학교 토목공학과)
Kim, Woon Hyung (전남도청)
Publication Information
Journal of Korean Society of Steel Construction / v.20, no.5, 2008 , pp. 609-616 More about this Journal
Abstract
Recently, many ocean bridges that connect land to island or island to island have been constructed along with the improvement of the nation's economy. Long-span bridges can be categorized as suspension bridge, cable-stayed bridge, arch bridge and truss bridge. In this study, correction with respect to construction error can be presented on site through the monitoring of the cable tension change of real structure for four major construction stages so that construction accuracy, including the management of profiles, can be improved. A vibration method, the so-called indirect method that uses the cable's natural frequency changes from the acceleration sensor installed on the cable, is applied in measuring cable tension. In this study, the estimation formula for the effective length of cable with damper is presented by comparing and analyzing between actual measurement and analysis result for the change of the cable's effective length. By the way, it is known that the reliability of estimating cable tension by applying the former method that uses the net distance from damper to anchorage is low. Therefore, for future reference of the maintenance stage, the presented formula for estimating the effective length of cable can be used as a reference for the rational decision-making, such as the re-tensioning and replacement of cable.
Keywords
A vibration method; effective length of cable; damper; frequency; measure of cable tension; Cable-Stayed Bridge;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Irvine, H.M.(1981), Cable Structures, MIT Press, Cambridge, Mass,
2 안상섭(2002), 사장교 케이블의 진동 검토 및 대책, 대한토목학회논문집, 제 22권, 제3-A호, pp.663-678.
3 강경구(2005), 신뢰성에 기초한 사장교 케이블장력관리를 위한 관리한계치 설정에 관한 연구, 한양대학교 박사학위 논문.
4 박연수, 전동호, 전양배, 강경구(2005), 진동법을 이용한 사장교 시공단계별 케이블 장력 관리, 한국구조물진단학회논문집, 제 9권, 제 4호, pp.127-134.
5 Randall, R. B.(1987), Frequency Analysis, Bruel & Kjaer Korea Ltd.,
6 김상효, 이상호, 최수일, 여동훈(1997), 진동법을 이용한 케이블의 장력측정기법과 계측환경의 영향분석, 연세대학교 산업 기술연구소 논문집, 제2권 제29집, pp.143-150.
7 Hiroshi Zui, Tohru Shinke & Yoshio Namita(1996), Practical Formulas for Estimation of Cable Tension by Vibration Method, Journal of Structure Eng., ASCE, Vol. 122, No.6. pp.651-656.   DOI   ScienceOn
8 Tanaka, H., Kamei, M., & Kaneyoshi, M.(1987), Cable Tension Adjustment by Structural System Identification, Cable-Stayed Buidges Experiences & Practice, Vol. 2, pp. 856-866.
9 Irvine, H.M. & Caughey.(1974), The linear theory of free vibration of a suspended cable. Proc. Royal Soc., London, England, Series A, vol. 341.