Anchor bonds of the contact joint of steel-concrete structures

The object of the research is anchor ties of composite steel-concrete structures. Based on experimental studies, new dependencies reflecting the actual stress-strain state of the contact of composite bending elements are recorded. The smallest discrepancies between analytical and experimental results are shown. Method. The existing methods for calculating the contact of composite rods are analyzed, new dependencies of the contact work are recorded, reflecting the actual work of the ties on bending and tension. For experimental verification, models of samples operating on shear are made. The samples are pasted over with strain gauges and devices recording the shear of the layers. Results. Numerous tests have shown that at the «concrete-steel» contact of a composite steel-concrete section, curvilinear stresses arise in concrete, and the anchor rod works on bending with tension. New dependencies reflecting the work of concrete and anchor of the contact of layers are recorded. Comparisons of the results of analytical calculations with experimental data show that the discrepancies do not exceed 5%.