Second order effects in slender concrete columns-reformulation of the Eurocode 2 method based on nominal curvature

摘要

In this work a reformulation of the parameters in the nominal curvature method of Eurocode 2 [ 1 ] is proposed, with a new definition of the maximum curvature of the column and the deflected shape. A comparison between Eurocode 2 [ 1 ] and the proposed formulation is made, considering: variable column heights; concrete classes from the low to high strength concrete; transverse loading; axial loads with different eccentricities; and variable load levels. In general the designs made with the present model give less steel area than in Eurocode 2 and can be used in high strength concrete.