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Seismic Performance Evaluation of Full-Sized RC Bridge Piers with tap-Spliced longitudinal Steels according to Lateral Confinement
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 Title & Authors
Seismic Performance Evaluation of Full-Sized RC Bridge Piers with tap-Spliced longitudinal Steels according to Lateral Confinement
Park Chang-Kyu; Chung Young-Soo; Ko Seong-Hyun; Lee Jae-Hoon;
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 Abstract
It has been known that practically unavoidable lap splices of longitudinal reinforcement in the plastic hinge region have a bad effect on the seismic performance of reinforced concrete bridge columns. Lap splices were usually located in the plastic hinge region of most bridge columns designed before the implementation of the new seismic design provisions of 1992 Korea Bridge Design specification. The objective of this research is to evaluate the seismic performance of full-sized reinforced concrete bridge piers with lap splice of longitudinal reinforcement in the plastic hinge region, and to develop an appropriate lateral confinement concept of RC bridge columns with lap-spliced longitudinal steels in low or moderate seismicity region. Eight test specimens in the aspect ratio of 4.0 were made with three types of lap splicing, two levels of confinement steel ratios and two types of tie configurations. It was confirmed from the Quasi-Static test that displacement ductility ratios were significantly reduced for nonseismic test columns with lap spliced longitudinal steels but were satisfied the seismic requirement for limited ductile design specimens. As a conclusion, pertinent lateral confinement content was proposed for the seismic. performance of RC bridge piers with lap-spliced longitudinal reinforcing steels in low or moderate seismicity region.
 Keywords
RC bridge columns;seismic performance;lap splice;confining steel;tie configuration;
 Language
Korean
 Cited by
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원형 철근콘크리트 교각의 내진성능 I. 심부구속철근비 영향 변수 평가,이대형;박창규;김현준;정영수;

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원형 철근콘크리트 교각의 내진성능 II. 심부구속철근비 제안,박창규;이대형;이범기;정영수;

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철근콘크리트 교각의 연성 능력에 따른 지진취약도,정영수;박창영;박지호;

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횡방향철근이 감소된 중공사각단면 교각의 내진거동 특성,선창호;김익현;

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횡방향철근이 감소된 중공사각단면 교각의 내진거동 특성,선창호;김익현;

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축방향철근의 저주파 피로 모델,고성현;이재훈;

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근단층지반운동에 대한 상부구조 질량 변화에 따른 RC 교각의 응답분석,박창규;정영수;이대형;

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