ESTIMATION OF DURABILITY OF ANCHORING FLEXIBLE LINKS IN EXTERNAL LAYERS OF THREE-LAYER REINFORCED CONCRETE PANELS

The article presents the results of studies evaluating the strength of anchoring of flexible ties in the form of pins in thin outer layers of panels and checking the adequacy of their anchoring during shear: when the layers are mutually displaced. Experimental dependences “shear condition - compliance” are obtained for flexible bonds anchored in concrete layers and the ultimate force perceived by them is determined. The acceptability for thin reinforced concrete elements - layers of three-layer panels of standardized methods for calculating strength is checked. The effect of the joint work of layers on the load-bearing capacity due to flexible connections and insulation has been experimentally studied. The influence of shear span and transverse reinforcement on the bearing capacity of three-layer reinforced concrete structures with a middle layer of low-strength lightweight concrete monolithically bonded to the outer bearing layers is studied. Experimentally substantiated proposals for the calculation of bending reinforced concrete three-layer structures for strength have been developed.

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