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Evaluation Method for the Effective Length Factor of Long Columns in Sway Mode Utilizing Horizontal Stiffness of the Frame

Year: 2025

Type: article

Abstract: The horizontal stiffness method (the HS method) is proposed as an accurate approach to evaluate the effective length factor of columns when a frame with long columns buckles in a sidesway mode, utilizing the horizontal stiffness derived by the first-order analysis. A parametric study was conducted to investigate the accuracy of the method. Based on the numerical results, the HS method can evaluate the effective length factor of a long column in a frame with an accuracy of 5~6%. The Ai distribution (the Japanese design shear force distribution) is recommended for the story shear force in the first-order analysis.

Source: Journal of Structural and Construction Engineering (Transactions of AIJ)

DOI: 10.3130/aijs.90.1350

Authors: Takuma NISHIMURA, Masae KIDO, Teruaki YAMANISHI

Institutions: The University of Kitakyushu, Hiroshima Institute of Technology

Language: English

Topic: Structural Load-Bearing Analysis

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W4415752932

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Cites: 12

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