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ISSN : 1226-525X(Print)
ISSN : 2234-1099(Online)
Journal of the Earthquake Engineering Society of Korea Vol.18 No.4 pp.201-212
DOI : https://doi.org/10.5000/EESK.2014.18.4.201

축방향철근의 겹침이음길이에 따른 원형 RC교각의 내진성능평가

박광순1), 서형열1)*, 김태훈2), 김익현3), 선창호3)
1)한국시설안전공단, 2)삼성물산(주) 건설부문 기술연구센터, 3)울산대학교 건설환경공학부

Seismic Performance Assessment of Existing Circular Sectional RC Bridge Columns according to Lap-splice Length of Longitudinal Bars

Hyeong Yeol Seo1)*, Park, Kwang Soon1), Kim, Tae-Hoon2), Kim, Ick Hyun3), Sun, Chang Ho3)
1)Korea Infrastructure Safety & Technology Corporation
1)Korea Infrastructure Safety & Technology Corporation, 2)Samsung C&T Corporation, 3)University of Ulsan
(Received 26 March 2014; Revised 3 June 2014; Accepted 3 June 2014)

Abstract

The plastic hinge region of RC pier ensures its nonlinear behavior during strong earthquake events. It is assumed that the piers securesufficient strength and ductility in order to prevent the collapse of the bridge during strong earthquake. However, the presence of alap-splice of longitudinal bars in the plastic hinge region may lead to the occurrence of early bond failure in the lap-splice zone and resultin significant loss of the seismic performance. The current regulations for seismic performance evaluation limit the ultimate strain anddisplacement ductility considering the eventual presence of lap-splice, but do not consider the lap-splice length. In this study, seismicperformance test and analysis are performed according to the cross-sectional size and the lap-splice length in the case of longitudinal barswith lap-splice located in the plastic hinge region of existing RC bridge columns with circular cross-section. The seismic behavioralcharacteristics of the piers are also analyzed. Based upon the results, this paper presents a more reasonable seismic performanceevaluation method considering the lap-splice length and the cross-sectional size of the column.
Seismic Performance Assessment,RC Bridge Column,Lap-splice Length,Displacement Ductility,Ultimate Strain

 

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Reference

Journal Abbreviation J. Earthq. Eng. Soc. Korea
Frequency Bimonthly
Doi Prefix 10.5000/EESK
Year of Launching 1997
Publisher Earthquake Engineering Society of Korea
Indexed/Tracked/Covered By