Composite columns part 2


To describe the behaviour of composite columns and to explain the design method for uniaxial and biaxial bending, including the determination of internal moments and forces.


This lecture shows how the plastic resistance of a composite column, under combined compression and bending, can be calculated. The design method given in Eurocode 4 for uniaxial and biaxial bending is explained [1]. Simplified methods for determining second order internal moments are also given. The influence of shear force on the moment resistance is considered.


The lecture Composite columns part 1  explained the simplified method for designing columns subject to axial compression only and outlined the restrictions on its application. The rules regarding local buckling, creep, and shrinkage of concrete were also described.

This lecture assumes knowledge of the above and describes the design of columns subject to combined compression and bending and columns subject to shear.

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