Capacity of lining joints simulated by ABAQUS

We employ ABAQUS to establish a series of refined finite element models of the longitudinal joints of shield tunnels. To enhance the general applicability of the probability model, the generation of finite element samples takes into account the influence of tunnel radius, lining thickness, concrete grade, bolt grade, and axial force environment on the flexural capacity of the joints. Considering practical engineering conditions, five different tunnel radii are evaluated: <i>r</i> = 3 m, 4 m, 5 m, 6 m, and 7 m, along with five different lining thicknesses: <i>t </i>= 0.3 m, 0.35 m, 0.4 m, 0.45 m, and 0.5 m, resulting in a total of 25 combinations. Uniform design is employed for the factors of concrete grade, bolt diameter, bolt grade, and axial force environment, with each group of factors having 9 levels . For each combination of tunnel radius and lining thickness, there are 9 sample points, yielding a total of 25 × 9 = 225 sample points. The dataset gives the results of the 225 samples.