الفهرس 
EXPERIMENTAL METHODOLOGYOnly 14 pages are availabe for public view
 |  | from | 245 |  |  |
| | | from | 245 | | |
Abstract
Short columns are structural zones of high shear strain concentrations,
which very often fail in an explosively brittle manner, during even
moderate intensity earthquake shaking. Evidence of failure in frame
columns exhibited their vulnerability when subjected to seismic
demands, despite the conservative design philosophy adopted by current
practice. Hence, updating the present codes or providing new design
techniques is urgently required. This mandates a complete reassessment
of short column response to seismic excitations. The present work was
initiated to investigate, experimentally and analytically, the performance
of short columns subjected to biaxial shear due to seismic input. A
review of the available research work and code provisions was
undertaken. Experiments of twelve reinforced concrete short columns
subjected to cyclic loading in directions skewed with respect to the
principal axes of the specimens as well as loading in directions of the
principal axes were reported. The set-up, instrumentation, control and
specimen manufactures were presented alongwith a full description of the
experimental results. The analytical study is carried out to develop a new
mathematical model for columns shear capacity. Based on the results of
the experimental and analytical investigations, comparative studies were
furnished alongside implications of the main finding on the ductilitybased
earthquake resistant design process.
Keywords: Reinforced Concrete, Seismic, Short Columns, Shear
Strength, Bi-Directional, Experimental, Analytical.