本文介绍了有限元在结构设计中的应用现状,指出传统三角闸门设计中对闸门内的构件进行优化及闸门转为平面结构在优化设计中存在的问题,详细论述了利用ANSYS二次开发语言APDL实现三角闸门优化设计,根据三角闸门的实际情况,进行有限元模型构建,能够对于三角闸门的设计优化进行简化,方便设计者的设计优化,并有效解决三角闸门在设计上面三维方面的问题,提高三角闸门设计质量及设计效率。 This paper introduces the application status of finite element in structural design. It points out the problems in optimization design of the gate structure and gate structure in traditional triangular gate design, and discusses in detail how to use ANSYS secondary development language APDL The optimal design of the triangular gate is realized. According to the actual situation of the triangular gate, the finite element model is constructed, which can simplify the design and optimization of the triangular gate, facilitate the design optimization of the gate, and effectively solve the problem of the triangular gate in the three-dimensional design and improve Triangle gate design quality and design efficiency.