Approximate analysis of asymmetric wall-frame structures

Abstract

An approximate hand method is proposed for lateral force analysis of asymmetric wall-frame structures having constant properties along the height. The coupled torsion-bending differential equations of equilibrium are decoupled using an orthogonal transformation. The deformations and stress resultants in the wall and frame assemblies are obtained by linearly combining the respective coefficients of each of the solved decoupled equations, stresses in members being obtained by simple force distribution formulae. Non-dimensional coefficients for deflection and stress resultants are given for a practical range of system parameters. The method is illustrated by a numerical example.