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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 58
Edited by: B.H.V. Topping and B. Kumar
Paper VII.5

Numerical Investigation of the Jacketing Rectangular Column for Seismic Retrofitting

M. Tehranizadeh

Department of Civil Engineering, IIEES Amirkabir University of Technology, Tehran, Iran

Full Bibliographic Reference for this paper
M. Tehranizadeh, "Numerical Investigation of the Jacketing Rectangular Column for Seismic Retrofitting", in B.H.V. Topping, B. Kumar, (Editors), "Computer Techniques for Civil and Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 129-137, 1999. doi:10.4203/ccp.58.7.5
The most suitable method for strengthening a rectangular column may be jacketing with a concrete overlay all four sided of the column.

The aim of this work is to find out an analytical method to carry out the interaction between new concrete layers under dynamic loadings. Two individual cases for this purpose have been studied, 1.), stiffness between two layers has been provided only by friction, 2.), in addition to friction stiffness, the normal stiffness has been also considered. The interaction between old and new concrete layers is modeled by non linear shear stiffness and also Drucke-prager and Von-Misses for 3D failure criteria of concrete and steel bar respectively have been used.

In the case of dynamic loading the displacement hysteric behavior of top of the column has been obtained and bearing capacity and ductility of the strengthened column have been analyzed to be compared with existing column. The presentation will be concluded by general recommendations for the application of jacketing rectangular column for seismic retrofitting.

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