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Sim, Sung-Han
Smart Infrastructure Systems Lab
Research Interests
  • Structural Dynamics, Smart Sensor and Sensor Network, Structural Health Monitoring, Digital Image Processing

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진동법을 이용한 사장교의 시공 중 장력 평가

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Title
진동법을 이용한 사장교의 시공 중 장력 평가
Other Titles
Evaluation of Cable Tension Forces Using Vibration Method for a Cable-stayed Bridge under Construction
Author
Cho, SoojinYun, Chung BangSim, Sung-Han
Issue Date
2014-04
Publisher
한국안전학회(The Korean Society of Safety)
Citation
한국안전학회지(Journal of the Korean Society of Safety), v.29, no.2, pp.38 - 44
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.
URI
https://scholarworks.unist.ac.kr/handle/201301/6706
DOI
10.14346/JKOSOS.2014.29.2.038
ISSN
1738-3803
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