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IJSTR >> Volume 9 - Issue 3, March 2020 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Seismic Strengthening Of R.C Beam-Column Joint Using Post Installed Headed Anchors

[Full Text]



K.Pdmanabham, K.Rambabu



Beam-Column joint, Fastening Techniques, Headed Anchors, Implicit Strengthening, Post Installation, Seismic behavior.



Post Installation of Headed Anchors (PIHA) is an advanced technique proposed in this study for structural strengthening of R.C beam column joints (BCJ). Previous research work on seismic damage of joints are widely correlated with shear deformation and bond slip of anchored reinforcement in joint core. To mitigate complex issues of reinforcement congestion, anchorage, fabrication and placement of reinforcement in congested geometry of BCJ, this novel technique of “Post Installation by Headed Anchors” (PIHA) is proposed in this paper. It is an effective measure contributing to enhance implicit properties of shear, stiffness, confinement and ductility of joint core. This method gives viable solutions to conventional design practice of Precast and Cast-in place joints .Headed anchors provides good supplement to hooked anchorage system for improved shear, anchorage and ductile properties by delay the ultimate failure of joint. The state of headed-bars considered in this study is of bonded and un-bonded conditions with concrete. This paper focused on analytical aspects of proposed PIHA system so as to evaluate its strength and parametric influence against seismic shear strengthening of BCJ. Principle observations made in this study are “Theory behind post installation, Fastening techniques, Force transfer mechanism, Failure modes, Seismic suitability of anchors, and Implicit strengthening of joint core.



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