Due to the quick development of elevated overpass bridges on highway, railway, urban overpass nowadays, the probability of vehicle collision with piers also increases sharply. An analysis model for truck-pier system is set up using the finite element software ANSYS LS_DYNA, to analyze the collision force characteristics of the truck at different speeds. In this paper, four calculation methods for equivalent static force of truck-pier collision have been presented, including the global average method, the local average method, the equivalent displacement method, and the simplified pulse method. Using these methods, the equivalent static forces are calculated, and the results are compared with the allowances given in AASHTO-LRFD, Chinese Railway Code and Chinese Highway Code, based on which the adapted scope and the accuracy of different methods are pointed out, providing references for engineering design.