주기하중을 받는 보-기둥 내부접합부에서 보 휨철근의 부착-미끄러짐 관계

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황현종;엄태성;박홍근
Hwang, Hyeon-Jong;Eom, Tae-Sung;Park, Hong-Gun

  • 투고 : 2013.09.06
  • 심사 : 2013.12.01
  • 발행 : 2014.01.25

초록

Under cyclic loading, the structural performance of reinforced concrete (RC) beam-column connections is significantly affected by the bond-slip of beam re-bars. In the present study, a bond-slip model was developed to evaluate bond-slip of beam re-bars in beam-column joints. The proposed model estimated the bond-slip relationship using simplified bond strength and bar strain distribution in the beam-column joint. To consider the cyclic loading effect, the bond strength was defined from the existing test results of beam-column connections that showed complete bond failure. For verification, the prediction of the proposed model was compared with existing test results of concrete block specimens for bond-slip and beam-column connection specimens. The result showed that the proposed model predicted well the bond strength degradation and bond-slip in the beam-column joints.

키워드

RC 보-기둥 내부 접합부;주기하중;부착 미끄러짐;단순 부착응력 모델

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