Frame analysis incorporating semi-rigid joint action: Applicability of the half initial Secant stiffness approach

Abstract The need for consistency between representation of joint behaviour and the approach of overall frame analysis and design, as emphasised by EC3, is discussed. A thorough examination of the ability of a simplified technique—currently permitted by EC3, but not previously fully validated—to provide acceptable solutions with significantly reduced computational effort is reported. It is found that the half initial secant stiffness method represents an attractive practical approach.