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Title |
Analyses of Structural Behaviors According to Core Location in the Building with Symmetric Plan
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Authors |
김정래(Jung-Rae Kim) ; 김재요(Jae-Yo Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2020.24.1.116 |
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Keywords |
코어; 편심 코어; 비틀림; 횡력저항성능 Core; Eccentric Core; Torsion; Lateral-Load Resisting Capability |
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Abstract |
In order to analyze the lateral-load resisting capability according to the core locations, three-dimensional structural analyses were performed for 20-story buildings with symmetric plan. Four analytical models for a center core, a single-axial eccentric core, and a double-axial eccentric core were constructed, and eigenvalue analyses, wind-load analyses, and earthquake-load analyses were performed. Torsion did not occur in the central core building, but the bending and torsion occurred in combination with the arrangement of the eccentric core, and the lateral-load resisting capability was degraded. The change in the wind load according to the eccentric core was small, but the maximum lateral displacement was found to increase greatly by the eccentric arrangement of the core. In addition, in case of the eccentric core, the seismic load was slightly reduced compared to the center core due to the decrease in the lateral stiffness, but it was found that the maximum story drift ratio increased significantly due to the torsional effect. Based on these results, the structural behavior according to the position of the core can be clearified and used as a guideline for core locations in the planning and design stage.
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