Reliability and sensitivity analysis of bridge crane structure

In this paper, the structural reliability and sensitivity of bridge crane have analyzed and calculated. A comprehensive evaluation framework of structural reliability and global sensitivity of bridge crane under two dangerous conditions and multiple uncertain factors is proposed. In order to simulate the typical failure modes under two dangerous conditions, the calculation is based on the high fidelity finite element model (FEM) of bridge crane. For calculation methods, the framework includes: high-precision Monte Carlo simulation (MCS) scheme for verification and high-efficiency artificial neural network (ANN)-based scheme for application. The reliability results show that the accuracy of the calculation results based on artificial neural network is acceptable (the relative errors are −0.86 %, −10 %, 5.26 % and 0, respectively), and 85 % of the calculation time is saved. The results show uncertain parameters related to loads, section size and elastic modulus should be paid attention to in bridge crane structural reliability design.