Title:
Analytical Modeling of Columns with Inadequate Lap Splices
Author(s):
Sharmin Reza Chowdhury and Kutay Orakcal
Publication:
Structural Journal
Volume:
110
Issue:
5
Appears on pages(s):
735-744
Keywords:
analytical; bond; column; model; slip; splice
DOI:
10.14359/51685827
Date:
9/1/2013
Abstract:
This paper investigates the effectiveness of an analytical model for reinforced concrete columns with lap splices by reproducing the results of a test program on six full-scale and densely instrumented column specimens with outdated lap splice details encountered in older (pre-1970 construction) buildings in the United States. The analytical model, although simple in formulation, allows coupling of flexural and bond-slip deformations, which are distributed along the lap splice of a column. Detailed correlation studies were conducted between analysis and test results, at both global and local response levels, and at various locations on the column specimens investigated. Overall, the analytical model was shown to provide reasonably accurate predictions of not only important global response characteristics of the columns (lateral load capacity, lateral load degradation, ductility, cyclic stiffness characteristics, and pinching properties) but also their local response and deformation characteristics (rotations, steel strains, concrete strain profiles, neutral axis position, and bond stresses).