In this paper, the nonlinear finite element analysis by ABAQUS was used to predict the behavior and ultimate capacity of shaft lining steel-concrete composite structures. The numerical data for designing the shaft lining structure in coal mines; the stress-strain response and damage of steel-concrete composites is deeply explore through finite element analysis and analytical methods. The present work studies the influence of thickness-diameter ratio on the shaft lining structures performance by focusing on the stress-strain characteristics, geometry imperfections, damage and deformations occurs inside the materials structure properties. The results from the finite element simulation agree very well with the experimental observations, especially with regard to load-deflection response, crack patterns at different load stages, failure modes and stress-strain mechanisms. All these indicate that the constitutive models used for shaft linings concrete by ABAQUS are able to capture compressive behavior and stress-strain response of the different Z1, Z2, Z3, Z4, Z5, Z6, Z7, Z8, and Z9 specimens. The results show that the nine models have an acceptable agreement with the experimental results for stress-strain response and progressive damage with high reliability. In this paper the traditional bearing capacity calculation formula is also used to calculate the ultimate bearing capacity of the shaft lining structures. The finite element software ABAQUS is employed for modeling, analyzing and simulation of a new high strength composite for coal mining application design. Finally, the plastic strain, compressive damage variable, tensile damage variable, compressive stressstrain curves, and load-displacement diagrams are obtained at the same time verified by incremental loading method employed on ABAQUS for solving the rationality of the shaft lining structures bearing in finite element dynamic analysis.
Based on the present research, for the studied cases, the experiment results of shaft linings concrete and FEM analysis by ABAQUS were in good agreement; the mean ratios of experimental-to-predicted values for: ultimate load capacities equal to 40 MPa; the limit loop strain of steel and concrete varying between 4000 to 6000 𝜇𝜀; the limit loop stress of steel is about 300 to 400 MPa, while for the concrete is about 150 to 200 MPa. Finite element analysis and experimental results show that, as loading progressed, the strain distribution in the shaft lining structure became approximately uniform indicating the formation of a tied arch mechanism. Concrete strain distribution is nonlinear and non-conform to Bernoulli’s assumptions for strain and stress distribution; this nonlinearity is due to the shear deformations inside the structural element. The study can provide certain reference for practical engineering calculation and analysis of compressive damage effects & stress-strain response of shaft lining structures.