To the Question of Evaluation of Load-Bearing Capacity of Brick Piers Reinforced with Sheets of Carbon-Fiber Fabric under the Action of Shearing Loads
The procedure of the study of brick piers strength reinforced with sheets of carbon-fiber fabric under the action of static shearing load (effect of distortion) is outlined. It simulates the seismic impact on stone structures during earthquakes, results of the study are analyzed. Variants of reinforcement of brick piers with sheets of carbon-fiber fabric with one or two-sided arrangement of elements are considered. The comparison with the results of test for misalignment of non-reinforced brick piers is made. The technique of fixing sheets to the brick masonry is described. An empiric dependence for determining the bearing capacity of brick piers with due regard for the character of their reinforcement with carbon fiber against the action of shearing force is proposed. Reinforcement of brick walls of buildings with the carbon-fiber fabric according to proposed structural schemes makes it possible to improve their bearing capacity at the joint action of horizontal and vertical static loads (misalignment). The bearing capacity of wall samples at one-side strengthening increases, at misalignment, by 1.48 times, at two-side strengthening - by 1.92 times. Good coincidence of the calculation results according to the proposed formula with the experiment data is noted.