NEHRP Clearinghouse

Title
A Study of Lapped Splices in Reinforced Concrete Columns Under Severe Cyclic Loads: Progress Report.
File
PB82131798.pdf
Author(s)
Lukose, K.; Gergely, P.; White, R. N.
Source
National Science Foundation, Washington, DC. Office of Planning and Resources Management., July 1981, 223 p.
Abstract
In an investigation of the behavior of overlapped reinforcing rods under high level, inelastic, reversing cyclic loads, 14 tests were conducted on column specimens with No. 6 spliced bars at the corners of surrounding No. 3 stirrups, subjected to combined bending and shear. The relationship between the splice length and the stirrup spacing was studied in detail. The most significant result was that a reasonable level of ductility in splices under combined bending and shear was achieved by providing uniformly spaced stirrups along the splice, and closely spaced stirrups just outside the high moment splice end. An equation for splice design was developed for specimens of the type tested. Experimental results are discussed in terms of load versus displacement, energy absorption, stiffness reduction, main bar strain variation, compression splice behavior, and bond-shear interaction.
Keywords
Earthquake engineering; Reinforcing steels; Earthquake resistant structures; Splices; Lapped splices; Columns (Supports); Concrete structures; Dynamic loads; Cyclic loads