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http://dx.doi.org/10.7734/COSEIK.2020.33.4.237

Effect of Outrigger Wall Reinforced with Post Tension on Reducing Differential Column Shortening  

Lim, You-Jin (Department of Architecture, Konkuk Univ.)
Kim, Han-Soo (Division of Architecture, Konkuk Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.33, no.4, 2020 , pp. 237-244 More about this Journal
Abstract
This study investigates the effect of the outrigger wall reinforced with post-tension on reducing differential column shortening. Since the outrigger wall is a concrete structure, the effect of its long-term behavior should be considered. The long-term behavior of the outrigger wall increases differential column shortening and decreases the shear force acting on the outrigger. When the stiffness of the outrigger becomes small, the effect of its long-term behavior increases. Furthermore, a method of reinforcing with post-tension to reduce differential column shortening is proposed. Following the analysis, it was confirmed that the post-tension method shows a significant reduction in the differential column shortening. This study shows that the effect of the outrigger wall reinforced with post-tension on reducing differential column shortening increases with the prestressing force of tendon.
Keywords
outrigger; tall building; long-term behavior; differential column shortening; post-tension;
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