Initial stiffness of reinforced concrete structural walls with irregular openings
Reinforced concrete (RC) structural walls with openings are the primary lateral-load-carrying elements utilized in many structures designed to resist earthquakes. A review of the technical literature shows that there is a considerable amount of uncertainty with regards to the elastic stiffness...
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| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2012
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/95262 http://hdl.handle.net/10220/8483 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Reinforced concrete (RC) structural walls with openings are the primary lateral-load-carrying elements
utilized in many structures designed to resist earthquakes. A review of the technical literature shows
that there is a considerable amount of uncertainty with regards to the elastic stiffness of these structures
when subjected to seismic excitations. Current design practices often employ a stiffness reduction factor
to deal with this uncertainty. In an attempt to develop additional information regarding the stiffness of
these structures, this paper discusses an approach to determine the initial stiffness of RC structural walls
with irregular openings and low aspect ratios. This approach would consider the effect of both flexural
and shear deformations. As a part of this study, an analytical approach to determine stiffness was also
developed and validated by comparing theoretical and experimental results obtained from six RC shear
walls with irregular openings. Simple equations for assessing initial stiffness of RC structural walls with
irregular openings are then proposed, based on these parametric case studies. |
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