On the base of finite element method about contact problem, building models of the flanged connection and the sleeve connection of aircraft is introduced.
在接触问题有限元法的基础上，介绍飞行器的盘式连接、径向螺钉套接接触模型的建立。
2
Taking the construction of in-water base slab of Guixi Bridge as an example, the article introduces in more detail the design of the steel sleeve box and the technique of water-avoiding construction.
该文以贵溪大桥水中承台施工为例，较详细地介绍了钢套箱的设计及避水施工技术。
3
The auxiliary shoe-fixing apparatus consists of auxiliary mounting base, shaft, locking pin, locking sleeve and shoe-fixing spring.