针对设计的新型20 m桥梁检测车，利用Pro/E软件建立了4种工况下整车结构的实体模型，运用有限元软件ANSYS对建立的模型进行了静力和模态分析。开展对设计结构进行强度校核，找出了设计结构的危险部位，并综合分析结果提出了设计结构的加强建议。有限元力学分析为校核结构强度提供了重要的理论方法，分析结果为桥梁检测车的结构设计与实际生产提供了理论依据与技术支持。

This paper focuses on a new designed 20-meters bridge-inspection vehicle. The whole vehicle is modeled within Pro/e software with respect to four kinds of working conditions, and its static and modal finite element analysis are performed by using the finite element code ANSYS. Based on these analysis results, the strength of the whole designed structure is checked, and all dangerous parts are found, finally, some suggestions are given to strengthen the structure. The finite element analysis is an important theoretic method to verify the design, and the results provide theoretic bases and technological support for this vehicle design and manufacture.

沈意平（1981－），女，湖南湘乡市人，湖南科技大学讲师，主要从事机械设计及理论、机械强度，机械动力学方面的研究