Research Article

Time-Dependent Reliability Analysis of RC Deep Beams considering Linear/Nonlinear Creep and Shrinkage Using ANFIS Network and MCS

Start
UEXPAN subroutine(i)Assign dimension for parameters used in the UEXPAN subroutine(ii)Evaluate initial parameters using the ACI formula for the shrinkage effect (iii)Calculate shrinkage strain in each time step
UMAT subroutine(i)Assign initial parameters for the creep effect based on the ACI code(ii)Select retardation times (iii)Calculate the discretized spectrum based on Widder’s formula (iv)Assign exponential algorithm parameters , , and to the program(v)Calculate the effective modulus (vi)Compute the inelastic creep strain increment
Run ABAQUS with stress-strain relation (i)Update the internal variable vectors
End loop over elements and integration points
End loop over time steps