摘要
本文利用有限无法对一个薄壁箱型梁在各种加载、各种加筋情况下的强度、刚度和稳定性分别进行了分析计算，讨论了薄壁箱型结构的一些主要力学特性，从而在薄壁箱型结构的设计方面得到了一些有益的结论。
According to different load and structure parameters，the deform and stress and stability of a thin-walled box beam are caicuinted and analized using fi-nite element methOd，Main mechanical characters of thin-walled box structure are discussed．Some usefull conclusions concerning the design of thin-walled box structure are obtained.
关键词
薄壁结构
稳定性
有限元
箱形结构
mechanieal properties
thin-walled structures
structural stability；fi-nite element methods
