A plasticity analysis of anchorage zones Available to Purchase

This Paper is the second of three on the behaviour of anchorage zones for prestressed concrete. Details are presented of a plasticity approach to the ultimate strength analysis of concrete prisms strip-loaded through rigid steel plates. Such a loading arrangement is assumed to represent adequately the transfer of force from tendon to concrete at the anchorage of a prestressed concrete structure. The effects of steel reinforcement are included in the analysis, which is assumed to satisfy plane strain conditions. lke Mod$ed Mohr-Coulomb failure criterion with non-zero tension cut-off is used for the concrete. A model, based on experimental evidence, is used as the basis for the plastic analysis, and good correlation is obtained between the theory developed here and the observed test results. It is concluded that such a plasticity approach is useful in assessing the strength of concrete under concentrated load.