Nonlinear Stochastic Seismic Response Analysis of Three-Dimensional Reinforced Concrete Piles

A reliable assessment and design of engineering structures requires appropriate estimation consideration different sources uncertainty. The randomness seismic ground motion is one major uncertainty that needs to be considered from the perspective performance-based earthquake engineering. To properly account for this its corresponding effect on pile foundations, a stochastic response analytical framework based probability density evolution method model proposed nonlinear analysis foundations. three-dimensional finite element reinforced concrete with large diameter embedded in soil foundation firstly established calibrated using full-scale lateral load test results literature, which behavior soil, soil–pile interaction, damaged plasticity, steel yielding are modeled. Then, numerical employed as an illustrative example framework. mean, standard deviation, function settlement dynamic reliabilities concerning various performance requirements obtained present study. settlements show great variability under excitation motions, maximum mean value about 8 mm. changing shape functions every moment demonstrates it unreasonable use assumed probabilistic distribution models characterize responses foundations during reliability analysis. Based method, found selected four levels 0, 0.1293, 0.8247, 1, respectively. study can provide proper comprehensive way quantify uncertainties their effects It also used estimate actual level designed by current codes when they subjected loads.