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Evaluation of Crack Width Based on the Actual Bond Stress-Slip Relationship in Structural Concrete Members

부착응력-미끌림 관계에 기반한 철근콘크리트 부재의 균열폭 산정

  • Kim, Woo (Dept. of Civil Engineering, Chonnam National University) ;
  • Lee, Ki-Yeol (Dept. of Civil Engineering, Chonnam National University) ;
  • Kim, Jang-Hyun (Dept. of Civil Engineering, Chonnam National University)
  • 김우 (전남대학교 토목공학과) ;
  • 이기열 (전남대학교 토목공학과) ;
  • 김장현 (전남대학교 토목공학과)
  • Published : 2006.02.28

Abstract

This paper presents an analytical model for evaluation of crack widths in structural concrete members. The model is mathematically derived from the actual bond stress-slip relationships between the reinforcement and the surrounding concrete, and the relationships summarized in CEB-FIP Model Code 1990 are employed in this study together with the assumption of a linear slip distribution along the interface at the stabilized cracking stage. With these, the actual strains of the steel and the concrete are integrated respectively along the embedment length between the adjacent cracks so as to obtain the difference in the axial elongation. The model is applied to the test specimens available in literatures, and the predicted values are shown to be in good agreement with the experimentally measured data.

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  1. Flexural Bond Behavior of Rebar in Ultra-High Performance Concrete Beams Considering Lap-Splice Length and Cover Depth vol.08, pp.03, 2016, https://doi.org/10.4236/eng.2016.83013