Design principles of prestressed concrete span coponents in the process of despersed reinforcement

Abstract

Objective: To determine the calculating justification methods of fibre-reinforced spans and scientific evidence of the structural method of dispersed reinforced concrete constructions in drily-hot climate for high-speed mainline railroads, to reveal advantages connected with fibre application in the process of construction, to determine the ways of total costs reduction while providing qualitative reliability characteristics of spans under construction. Methods: Comparative analysis, mathematical modeling. Results: Calculating principles of fibre-reinforced elements of spans were specified. The study was aimed at application solving, with regard to climate in Uzbekistan, and determined the parameters of Lр = 66 m fibre-reinforced concrete span, specified by the objective of scientific study concerning the bridgework for high-speed mainline railroad. Practical importance: Methodological foundation for fibre-reinforced concrete spans calculation was developed.