Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10287113 | Engineering Structures | 2005 | 12 Pages |
Abstract
An important issue in seismic design of concrete buildings concerns the stability of structural walls when subjected to intense earthquake ground motions. Large tensile strains, developed as a result of significant yielding in the wall, are a cause for concern since the stability of the wall depends on the magnitude of the tensile strain imposed on the wall. A critical condition exists where excessive out-of-plane displacement may occur upon load reversal prior to crack closure causing the wall to buckle. The potential for instability can be mitigated by requiring a minimum wall thickness to ensure that the in-plane lateral strength can be fully developed in the reversed direction. A methodology for assessing the minimum wall thickness is outlined in this paper and results are presented for a number of parameters including the ground motion intensity, longitudinal reinforcement ratio, floor weight, wall-to-floor area ratio and number of stories. The minimum wall thickness is compared with recommendations in current building codes.
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Physical Sciences and Engineering
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Geotechnical Engineering and Engineering Geology
Authors
Y.H. Chai, S.K. Kunnath,