Review: Stability of nonlinear masonry members under combined load

摘要: Under examination is the post buckling of unreinforced load-bearing masonry walls or piers subject to a combined load consisting uniformly distributed axial and concentrated eccentric at top end. Fixed free-ended prismatic columns are examined, taking into consideration no-tension material with parabolic stress-strain law. The integro-differential problem has been formulated extremely carefully solved numerically finite difference method (FDM). Depending on intensity, height-depth ratio, intensity initial eccentricity load, column can fail owing elastic instability because reached, exceeded, its allowable compressive stress. It shown that along axis, in case centred one slight eccentricity, always produces reduction limit load. Whereas applied strong stabilizing effect low values high instead. Finally accuracy results assessed by comparison obtained use 4th-order Runge-Kutta Method Collocation Method.