STRENGTH CALCULATION OF FLEXIBLE REINFORCED CONCRETE BEAMS UNDER LOAD WITH THE PERFORMING A CONSIDERATION OF THE AGING PROCESS IN CONCRETE
Proposed a modified version of the deformation model of the power of resistance of reinforced concrete to evaluate the strength of composite structures. Contains the General provisions in the construction of this model is presented a new approach to transform diagrams of compression and extension of concrete. To obtain the analytical dependences describing diagrams deformation of concrete at a non-uniform compression and tension, adopted energy criteria for the destruction of concrete compression and tension. There is also performed a consideration of the durability increase process in non-loaded concrete in the course of time with the use Prof. G.A. Geniev’s aging theory. Method of determination of strength of reinforced concrete beams, taking into account the presence in the source element of the stress-strain state, caused by the applied external activity, as well as the peculiarities of the work as part of a reinforced concrete construction with a variety of deformability and strength characteristics.