Experimental research strength characteristics of steel fiber reinforced concrete gutters and modeling of their work using the finite element method

Abstract

Steel fiber reinforced concrete and structures based on it have increased crack resistance, toughness and elasticity, abrasion resistance, service life and are less sensitive to vibration and shock effects than similar structures with typical reinforcement. These elements at short-term and repeated loads three series of experimental researches have been conducted. Testing of prototypes (gutters) is performed by applying a central vertical load to the metal traverse beam acting on the gutter as evenly distributed. The results of experimental research of strength characteristics the steel fiber concrete, reinforced concrete and steel fiber reinforced concrete in gutters under the action of single and repeated loads are given. The results of the simulation of gutters using the finite element method also presented. Increasing the percentage of reinforcement with steel fibers gives an increase in carrying capacity for SFRC gutters at repeated low-cycle loads. Cracks in RC and SFRRC samples were with direct nature, while in SFRC samples they were with net nature.