Experimental Investigation On The Torsion-shear Interaction Between Stone Blocks In Frictional Contact
Price
Free (open access)
Transaction
Volume
153
Pages
12
Page Range
429 - 440
Published
2015
Size
1,065 kb
Paper DOI
10.2495/STR150361
Copyright
WIT Press
Author(s)
C. Casapulla, F. Portioli
Abstract
The definition of the yield domains within limit analysis of 3D dry-jointed masonry block structures requires experimental and analytical investigation on the frictional contact problems. In this paper the torsion-shear interaction is experimentally investigated with reference to the single contact interface of a stack of two dry-jointed tuff blocks. A number of tests based on different eccentricities and directions of the horizontal loading are carried out in order to consider interactions between shear and torsion moment. The results are compared with those obtained by the analytical model of two overlapped rigid blocks, based on the assumptions of infinite compressive strength for blocks and no-tension and frictional behaviour at their contact. In particular, the non-linear yield function in torsion-shear interaction is piecewise linearized in order to provide a simplified and conservative expression for inclusion in linear programming (LP) formulations.
Keywords
experimental frictional behaviour, limit state analysis, torsion-shear interaction effects, non-linear yield criteria