Couplings slip determination of the threadbar of strength class 500 N/mm2

The authors present the results of RD on topic coupling slip threadbar class Av500P. aim work was to obtain experimental data study effect (deformability) joint and taking into account characteristics in design structures. strength deformability samples with a diameter 16, 25 40 mm an innovative four-sided (four-row) thread profile Av500P have been studied accordance methodology international Russian standards. were made different tightening torques lock nuts anchor-adhesive compositions inside coupling. Along study, it can be concluded that these couplings four-row meet requirements standards when applying certain torque tightened nuts, depending fittings joined use large medium diameters joined. diagrams joints obtained during experiment used practice reinforced concrete structures according deformation model. Together, this makes possible introduce construction regulatory code.