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Design Comparison by Node Width Variation of Strut-Tie-Model

스트럿-타이 모델의 절점 폭 변화에 따른 설계 비교

  • Uy, Lymei (Dept. of Civil, Environmental & Architectural Engineering, Korea University) ;
  • Son, Byung-Jik (Dept. of Civil and Environmental Engineering, Konyang University)
  • Received : 2014.02.24
  • Accepted : 2014.10.10
  • Published : 2014.10.31

Abstract

In the Strut-Tie-Model(STM), the width of a node is important in both analysis and design. Its effects on the force distribution at truss analogy system. In addition, it effects the verification of all struts and nodes, which need to be checked to satisfy the code of design. Code here refers to the ACI-318 code. Four methods were used to define the width of node: 1) effective depth is assumed to equal to 0.9 of the overall depth of beam, 2) moment equilibrium 3) assumption of the width of node at the bottom equal to 380mm, and 4) the new proposed method by this study. 106 selected samples of a parametric study obtained from the four methods were analyzed. Because total steel requirement from these four methods are similar, the easiest would be a good choice for a time saving calculation.

Keywords

ACI;deep beam;node width;STM

References

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