Strengthening of R/C Members Subjected to Seismic Actions

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Title: Strengthening of R/C Members Subjected to Seismic Actions

Author(s): Franco Mola

Publication: Special Publication

Volume: 160

Issue:

Appears on pages(s): 207-230

Keywords: bending; ductility; earthquake-resistant structures; reinforced concrete; reinforcing steels; Structural Research

Date: 6/1/1996

Abstract:
Presents the theoretical analysis of load bearing capacity and ductility of reinforced concrete (RC) strengthened sections. The analysis is performed first, stating the equilibrium equations at the ultimate limit state for combined bending and axial load and for pure bending of reinforced concrete sections strengthened by adding new concrete parts incorporating additional steel reinforcement. A detailed discussion of the load bearing capacity and of the related ductility which can be reached by means of prescribed strengthening procedures is then performed, pointing out the basic prerequisites that have to be satisfied to obtain a good deformational behavior, together with a significant increase of the load bearing capacity. The results derived from a parametric study and from some numerical examples previously performed by the author allow application of the proposed procedure to practical cases, showing how it can be used as an efficient tool in solving the problems connected to everyday practice.