Journal of Structural and Construction Engineering (Transactions of AIJ)
Online ISSN : 1881-8153
Print ISSN : 1340-4202
ISSN-L : 1340-4202
SIMPLIFIED DESIGN FORMULA FOR EFFECTIVE LENGTH FACTOR OF A NON-SWAY LONG COLUMN IN ATRIUM
Masae KIDOTakuma NISHIMURAKeigo TSUDA
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2023 Volume 88 Issue 806 Pages 675-686

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Abstract

The long columns in atrium often buckle by the non-sway mode due to the surrounding bracing frame. The objective of this study is to propose an evaluation method for the effective length factor of the long column. Evaluation formula is obtained by using the energy method, and the effective length factors are calculated taking story height ratio, flexural stiffness ratio and axial load ratio as the parameters. The accuracy is verified comparing with the exact effective length obtained using the buckling slope deflection method, and it is shown that the proposed formula is useful for the actual conditions.

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© 2023, Architectural Institute of Japan
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