自移式临时支护支架主梁的有限元分析

Finite element analysis of main girder of the self-motion temporary support

针对顶板极不稳定的煤岩和半煤岩拱形巷道,对一种新型的巷道临时支护支架的主梁进行了力学分析.采用Proe对临时支护支架进行三维建模,保证各部件互不干涉,以确定其结构的合理性.在此基础上用有限元软件对主梁进行静力学分析,模拟计算,验证设计的可行性,得出主梁的最大受力位置和最大变形量.研究结果表明:临时支护主梁起初设计方管壁厚比较厚,材料富余量比较大.

Aiming at the highly instable roof of coal-rock and half-coal-rock arch roadway, this paper carried out a mechanics analysis for the main supporting girder of a new type of temporary roadway support. The Proe to 3D modeling for temporary support was used to ensure that all parts of non-interference in each other and determine the rationality of the structure. The maximum stress position and the maximum deformation of main girder were obtained by statics analyzing of main girder with finite element software, simulation calculation and verification of the feasibility of design. The results show that the design of tube wall thickness of temporary support main girder is thicker at first, and material surplus quantity is larger.