REINFORCEMENT OF LONG CYLINDRICAL SHELL WITH STEEL FIBER

A technique for experimental study of long cylindrical shells is proposed in order to determine their stress-strain state, load-bearing capacity and crack resistance. To implement the task, authors developed a special stand. For testing, eight models shell were made ― 4 reinforced concrete fiber-reinforced concrete. Fiber-reinforced specimens have additional dispersed reinforcement with steel fiber bent ends amount 1% by volume Simultaneously samples, control samples prisms cubes physical mechanical characteristics Experimental kept same temperature humidity conditions 28 days at 16 ... 20º. each series, six 100x100x100 mm size three 100x100x400 tested. Tests carried out according DSTU B V.2.7-214:2009. Based on results these tests, it was established that represented C20/25 class terms compressive strength. The paper presents testing shell, thickness which 45 mm. hinged four points loaded vertical distributed load applied strips, 13 cm wide, only along body shell. showed bearing 128.6 kN, first formed 64.3 50.0% capacity. Until moment loss capacity, 10 cracks initial opening width 0.05 maximum final 0.7 Computer simulation calculations performed using licensed software ANSYS 17.1. determined 120.2 6.5% less than experiment. test methodology stand are universal nature will be used further research.