论文部分内容阅读
桁架是一种常见的结构形式,其受力特征也为工程师们所熟知。但是,把它应用于转换结构当中时,它的受力特征与单纯的桁架是有区别的。在工程中常用的转换桁架有三种形式,即空腹桁架、斜腹杆桁架和混合桁架。三种转换桁架的区别主要是腹杆布置形式的不同,所以,就有必要对腹杆在转换桁架中的作用进行研究。利用有限元软件ANSYS对三种不同形式的转换桁架结构在弹性阶段的受力状态进行分析,通过三种转换桁架形式的对比分析得出了这样的结论:斜腹杆的增设使得桁架各杆件的内力分布更加的均匀合理,刚度和整体性提高,有效地改善转换桁架的变形性能。为转换桁架在工程实际中的应用提供参考或者建议。
Truss is a common structural form, the force characteristics are also known to engineers. However, when it is applied to the transformation structure, its force characteristics are different from the simple truss. There are three forms of conversion trusses commonly used in engineering, namely fast web truss, diagonal web truss and hybrid truss. The difference between the three kinds of conversion trusses is mainly the different forms of the webs. Therefore, it is necessary to study the function of the webs in the conversion truss. The finite element software ANSYS is used to analyze the force state of three different types of conversion truss structures in the elastic phase. The comparison of the three kinds of conversion truss forms the conclusion that the addition of diagonal webs makes the truss members The distribution of internal forces is more uniform and reasonable, and the rigidity and integrity are improved, which effectively improves the deformation performance of the conversion truss. For the conversion of truss in engineering practice to provide reference or advice.