Response Of Columns And Joints With Spiral
Shear Reinforcement
Author(s)
C. Karayannis & G. Sirkelis
Abstract
In this study the behavior of reinforced concrete members with rectangular spiral
shear reinforcement under cyclic loading is experimentally investigated. In this
direction two pairs of specimens are tested. The first pair of specimens comprises
two exterior beam-column joints while the second one comprises two column
specimens. The first specimen of each pair has rectangular spiral shear
reinforcement whereas the latter has common stirrups. Both beam-column
specimens have been suffered the same full cyclic deformation with increasing
amplitude and 2 full cycles at every step. Also, both column specimens have
been suffered the same increasing full cyclic deformation with 2 full cycles at
every step. The results of the tested specimens reinforced with rectangular spiral
reinforcement are compared with the results of the specimens reinforced with
stirrups, in terms of maximum loading and energy absorption per step, and
ductility capacity. From the observed responses of the tested specimens it can be
deduced that the use of rectangular spiral reinforcement in the reinforced
concrete members improved the seismic capacity of all the examined specimens.
Keywords: beam-column joints, columns, spiral shear reinforcement.
1 Introduction
It is generally accepted that the use of continuous spiral reinforcement in
reinforced concrete elements with cyclic cross section can substantially improve
the strength and the ductility of the concrete and henceforth the total seismic
response and capacity of the structural element (Park and Paulay [7], Saatcioglu
and Razvi [9], Sheikh and Toklucu [10]). International codes in these cases
Keywords
beam-column joints, columns, spiral shear reinforcement.
Related Book
Other papers in this volume
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