Title: Lateral Load Response of Strengthened Reinforced Concrete Beam-to-Column Joints

Author(s): A. G. Tsonos

Publication: Structural Journal

Volume: 96

Issue: 1

Appears on pages(s): 46-56

Keywords: beams (supports); buildings; columns (supports); damage; earthquake resistant structures; joints (junctions); lateral pressure; loads (forces); reinforced concrete; repairs; shear properties

DOI: 10.14359/595

Date: 1/1/1999

Abstract:
Two test series were conducted to determine the effectiveness of the United Nations Industrial Development Organization (UNIDO) Manual guidelines for the repair and strengthening of beam column joints damaged by severe earthquakes. Two exterior reinforced concrete subassemblages (M1 and M2) were subjected to a series of cyclic lateral loads to simulate severe earthquake damage. The specimens were then repaired and strengthened by jacketing according to UNIDO Manual guidelines. The strengthened specimens RM1 and RM2 were then subjected to the same load history as was imposed on the original test specimens M1 and M2.The repaired and strengthened specimens exhibited higher strength, greater stiffness, and better energy dissipation capacity than the original specimens.