Quasi Static Test of Real Scaled RC Piers with Low-Aspect Ratio

저형상비 RC교각의 실물모형 준정적실험

  • 조창백 (한국건설기술연구원 구조연구부) ;
  • 곽임종 (한국건설기술연구원 구조연구부) ;
  • 김영진 (한국건설기술연구원 구조연구부)
  • Published : 2006.05.11

Abstract

The past Korean Bridge Design Specifications have no limitation on the amount of lap splices of longitudinal bars in the plastic hinge zone of piers. A majority of bridge piers which have been non-seismically designed might have some lap splices in plastic hinge zone. Also a number of those piers in Korea have a low aspect ratio(height/section area). So, some problems such as low ductility behavior may happen. In this study, the real pier which was non-seismically designed and has a low aspect ratio was selected for the quasi-static tests. Two groups of full scaled RC pier models of which aspect ratios are about 2.26 and about 2.67 were fabricated. And then, quasi-static tests according to the drift level history method were implemented. From the test results, the failure of these test specimens have been shown in the complex shear-flexural or shear modes. The low aspect ratio and the lap splice have largely influenced on the seismic performance of bridge piers.

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