Experimental Study for Seismic Performance Evaluation with Existing RC Bridge Piers

기존 실물 원형 철근콘크리트 교각의 내진 성능 평가를 위한 실험적 연구

  • 이대형 (경도대학 건설환경공학과) ;
  • 김훈 (중앙대학교 토목환경공학과) ;
  • 정영수 (중앙대학교 토목공학과) ;
  • 이재훈 (영남대학교 토목공학과)
  • Published : 2002.03.01

Abstract

The recent earthquakes in worldwide have caused extensive damage to highway bridge structures. In particular, it has been demonstrated that concrete columns with inadequate lateral reinforcement contributed to the catastrophic collapse of many bridges. The poor detailing of the starter bars in these columns compounded the problem of seismic deficiency. Therefore, this study has been performed to verify the effect of lap spliced longitudinal steel and confinement steel type for the seismic behavior of reinforced concrete bridge piers. Eight concrete columns were constructed with existing scale as diameter, 1.2m and height, 4.8m. 4 confinement steel types were adopted for seismic performance evaluation. All specimens were rested under inelastic cyclic loading while simultaneously subjected to a constant axial load. The longitudinal steel lap-splice is highly effective in seismic performance deterioration of reinforced concrete bridge piers.

Keywords