In this paper, the plate girder bridge is modeled as an orthotropic plate, and the vehicle is modeled as a group of loads moving on the orthotropic plate.

• 同时,简支板梁桥又是小跨径桥梁最常用的桥型之一,因此,移动车辆荷载引起的简支板梁桥动力效应越来越被工程技术界所关注。