STRENGTH OF INCLINED CROSS-SECTIONS OF REINFORCED CONCRETE PROTECTIVE SHELLS UNDER THE ACTION OF PUNCHING

The experience of inclined cross-sections in the zones of influence of transverse forces and punching loads has been studied. The results of experimental studies of inclined cross-sections of protective structures in the area of influence of local emergency load on punching are presented. The article presents the reinforcement and strength of inclined cross-sections at the angle of destruction γ=40°. The analysis of the results was carried out and recommendations were developed for the design of inclined cross-sections of shells in the punching zone. The experimentally obtained values of the bearing capacity of concrete and reinforced concrete samples during punching correlate well with the results of theoretically determined dependencies that take into account the pin effect of reinforcement and the actual strength of concrete.