ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ СТАЛЕЖЕЛЕЗОБЕТОННЫХ КОНСТРУКЦИЙ, РАБОТАЮЩИХ НА ИЗГИБ

Considered the issues of rigid reinforcement structures in bending. The substantiation of the selected theme of research is given. Detailed description and features of rigid and bar reinforcement for the studied structures are presented. Features of the models of materials used at manufacturing and their characteristics are resulted. The substantiation of the selected type of a fiber (a steel fiber straight a profile) by means of definition of mobility of a concrete mix is given. The analysis of the results of bending tests of models of steel-concrete composite beams obtained. General views and character of destruction of models are presented, the table of breaking loads is generated. The evaluation of existing calculation methods proposed in [1, 2, 3] and their comparison with the experimental results is fulfilled. It is estimated the efficiency of application of steel fiber straight profile in bending structures made of high-strength concrete.