Elastic Buckling Strength of Semirigid Frames

概要

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The behavior of semirigid frames has been extensively investigated, and several methods has been proposed for the evaluation of effective buckling length of framed columns, which require rather tedious calculation in the case of the connection with highly nonlinear characteristics. This paper proposes an approximate method to evaluate the effective length of columns involved in a frame of which connections can be assumed to behave linearly. The proposed method first replaces a given frame with elastic linear springs at beam ends by an equivalent rigid frame, and the effective column length of the former is approximated by that of the latter, which may be obtained from a conventional alignment chart. Good accuracy has been observed from the results of the numerical analysis of sample frames.
2002-12-20