Abstract: Abstract:In order to meet the requirements of safety assessment of gantry crane metal structure, based on the suitability of BP neural network for dynamic system and the incomplete knowable of the assessment factors, a safety assessment model of metal structure of general gantry crane was established. A structure safety assessment index system was recommended, which is convenient for statistics and assignment. A procedure was programmed by software Matlab 7.0, and the procedure was used to train the neural network. Through the training of detection sample, the feasibility of the gantry crane evaluation model was verified. The result in this paper provides evaluation basis and method for safety assessment of general gantry crane metal structure.

Key words: Keywords:BP neural network, gantry crane for general use, metal structure, safety assessment