New Approaches in Civil Engineering

New Approaches in Civil Engineering

Numerical Investigation of the Pre-Stressed Concrete Sleepers Bearing Capacity by Considering the Sensitivity Analysis of the Effective Parameters on the Bonding between Steel and Concrete

Document Type : Research Paper

Authors
1 M.Sc. of Structural Engineering, Jihad Institute of Higher Education, Hamedan, Iran
2 Assistant Professor, Jihad Institute of Higher Education, Hamedan, Iran
Abstract
The main goal of the current research is to investigate the bearing capacity of the pre-cast concrete traverse by considering the analysis of the amount of removal of steel and concrete in numerical construction, after verification and the model of a sample of concrete traverse with pre-cast cable. In the Abaqus software environment, the effect of eight different variables including the diameter of longitudinal reinforcements (cables), the vertical distance of reinforcements, compressive strength of concrete, tensile strength of steel, modulus of elasticity of concrete, modulus of elasticity of steel, Poisson's coefficient of concrete and Poisson's coefficient of steel on Roy Four different responses, including compressive stress created in concrete, vertical displacement created in the traverse, tensile cracking in concrete and load bearing of the traverse, have been investigated and evaluated. In order to carry out analysis 5, the effect of each of the introduced variables has been investigated for 4 different numerical values (range -5% to 5% and -10% to 10%). The results obtained from this study show that by changing the numerical changes related to the geometrical characteristics such as the diameter of the cables, the distance between the cables and the mechanical characteristics of the compressive strength of concrete, the tensile strength of steel, the modulus of elasticity of concrete and steel, and Poisson's ratio of steel and concrete. Witn essed significant changes in the maximum compressive stress of concrete, tensile cracking of concrete, vertical displacement and bearing capacity of concrete traverses. As an example, 10% changes in each of the presented changes have undergone 6.6%, 0.47%, 0.94%, 0.47%, 0.94%, 0.66%, 0.33%, and 0.94% traverse load, respectively.
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