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http://dx.doi.org/10.11112/jksmi.2009.13.5.121

Evaluation on the Lost Prestressing Force of an External Tendon Using the Combination of FEM and HGA: II. Experimental Verification and Field Applications  

Jang, Hang-Teak (한양대학교 산업과학연구소)
Noh, Myung-Hyun (한양대학교 토목공학과)
Park, Kyu-Sik (RIST 토목연구본부)
Park, Taehyo (한양대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.13, no.5, 2009 , pp. 121-132 More about this Journal
Abstract
This paper introduces an experimental verification and a field application of the proposed technique using the combination of FEM and HGA about the loss prestressing force of an exteranl tendon by above same authors. The vibration tests have been conducted by using a laboratory models and the externally prestressed tendon at the field and the natural frequencies are extracted from the vibration tests. The proposed technique based on the extracted natural frequencies is applied. It is seen that the errors in the tension and lost prestressing force by proposed technique are about 4% from a laboratory model test. For the model verification at field, exact modeling has beem made with Rayleigh damping. It is seen that the error in the tension by proposed technique is less than 1% and the estimated lost prestressing force converges less than the exact value.
Keywords
Hybrid genetic algorithm; System identification; Externally prestressed tendon; Tendon force; Rayleigh damping ratio;
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1 노명현, 장한택, 이상열, 박대효, 차분 진화 알고리즘 기반의 SI기법을 이용한 외부 긴장된 텐던의 장력추정, 대한토목학회, 제 29권, 제1A호, 2009, pp.9-18
2 장한택, 김병화, 박대효, 시스템 인식기법을 이용한 케이블의 장력추정: Ⅲ. 실험적 검증, 대한토목학회, 제28권, 제2-A호, 2008, pp. 215-222
3 Kim, B.H., Stubbs, N., and Park, T., A new Nmethod to extract modal parameters using outputonly responses, Journal of Sound and Vibration, Vol.282, No.1-2, 2005, pp. 215-230   DOI   ScienceOn
4 노명현, 이상열, 박대효, hGA와 FEM을 조합한 외부 비부착 긴장재의 장력 평가기법, 대한토목학회 학술발표회 논문집,2008, pp. 307-310
5 Chopra, A.K., Dynamics of Structures : Theory and Applications to Earthquake Engineering . Prentice Hall; Englewood Cliffs, New Jersey, 2007, pp.455-458
6 Kim, B.H., and Park, T., Estimation of cable tension force using the frequency-based system identification method, Journal of Sound and Vibration, Vol.304, No.3-5, 2007, pp. 660-676   DOI   ScienceOn