GAUSSIAN UPCROSSING RATE SOLUTION FOR STRUCTURAL SERVICEABILITY

An analytical solution for the structural serviceability problem of co ncrete creep response is developed herein. The solution is based on st ochastic crossing theory, using the upcrossing rate approach for nonst ationary stochastic processes. Both the creep effect and applied load are modelled as Gaussian stochastic processes. Since the creep effect is nonlinear in time the resultant structural response is a nonstation ary process. Several simple but plausible simplifications are made to render the solution analytically tractable. An example is given to ill ustrate the approach and the analytical results have been verified by simulation.