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Seismic Performance Evaluation of RC Bridge Piers with Limited Ductility by the Pseudo-Dynamic Test
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 Title & Authors
Seismic Performance Evaluation of RC Bridge Piers with Limited Ductility by the Pseudo-Dynamic Test
Chung, Young-Soo; Park, Chang-Kyu; Park, Jin-Young;
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Even though Korean peninsula is located in regions of moderate seismic risks, current seismic design provisions of the roadway bridge design code have adopted the AASHTO code which is based on the requirements for high seismic regions. The objective of this research is to investigate the seismic performance of circular reinforced concrete (RC) bridge piers with limited ductility, which may be desirable in low or moderate seismic regions, such as in Korea. Four test specimens were designed and constructed. The reference specimen was designed with longitudinal steel ratio as 1.01% and the confinement reinforcement ratio as 0.13% without considering earthquake, and three other test specimens were designed in accordance with a limited-ductility concept as 0.3% for the confinement steel ratio. This confinement ratio is 0.32 times of minimum lateral reinforcement specified in current seismic design provisions, and 2.3 times of lateral reinforcement required in nonseismic design provisions. The pseudo-dynamic test was carried out to evaluate the seismic performance of full-scale specimens in size of 1.2m diameter and 4.8m height. Judging from the experiment, the reference specimen was not satisfactory for the demand displacement ductility =5.0, but three limited-ductility specimens appeared to have the displacement ductility of more than 5.
RC bridge pier;limited ductility;pseudo-dynamic test;full-scale;
 Cited by
복합판으로 보강된 철근콘크리트 기둥의 내진성능연구,박태만;박성민;홍혁준;강경수;윤정배;

한국콘크리트학회논문집, 2005. vol.17. 1, pp.113-120 crossref(new window)
주철근 겹침이음된 RC교각의 근단층지반운동에 대한 진동대 응답과 분석,정영수;박창영;홍현기;박지호;심창수;

한국콘크리트학회논문집, 2008. vol.20. 4, pp.451-458 crossref(new window)
근단층지반운동에 대한 상부구조 질량 변화에 따른 RC 교각의 응답분석,박창규;정영수;이대형;

한국콘크리트학회논문집, 2010. vol.22. 5, pp.667-673 crossref(new window)
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