Experimental Investigation On The Seismic
Damage Behaviour Of Reinforced Concrete
Columns And Beams
Author(s)
L. Chen, X. Lu, H. Jiang & J. Zheng
Abstract
The enormous loss of lives and property during the recent, strong earthquake in
Sichuan, China reminds the public again of the extreme importance of seismic
performance of engineering structures. As generally accepted as a promising
direction, the performance-based seismic design (PBSD) method requires deeper
insight into structural damage behaviours during strong earthquakes. The
research in this paper was aimed at assessing the seismic performance of
reinforced concrete columns and beams with varying design parameters. The
main variables of the tested specimens included axial load ratio, shear-span ratio,
lateral reinforcement ratio and longitudinal reinforcement ratio. It was found that
the progression of damage was generally similar, and the flexural behaviour was
dominant in all specimens with only one exception, which was designed
according to early non-seismic design code. The influence of design parameters
on ductility and damage behaviour are investigated, and it turns out that the axial
load ratio and shear-span ratio affect ductility and cracking progress remarkably.
The longitudinal reinforcement ratio has only a limited effect on the ductility of
columns, but evidently affects the ductility of beams. The lateral reinforcement
ratio seems to be a less important factor affecting column cracking behaviour,
and it has drift-related effect on the cracking of beams. It is expected that these
relationships can be utilized for the purpose of direct damage control in seismic
design processes.
Keywords: seismic design, damage states; performance, reinforced concrete
columns.
Keywords
seismic design, damage states; performance, reinforced concrete
columns.
Related Book
Other papers in this volume
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