一、概述随着塔机塔身的加高、起重臂的加长以及结构上的多样化,其钢结构力学性能的传统计算方法越来越显得落后了。而采用有限元方法进行结构计算能更全面、迅速、准确、直观地反映结构的力学性能,为设计者提供更多更充分的依据。在某厂QT25塔机换代产品设计中,我们对塔机的钢结构(起重臂、水母型底架、塔身)进行了有限元计算和分析。该机系快速架设、整体拖运、下回转小车变幅式塔机 I. Overview With the tower crane towering height, jib extension and structural diversification, the mechanical properties of the traditional calculation methods of steel structure more and more backward. The finite element method for structural calculation can more fully, quickly, accurately and intuitively reflect the mechanical properties of the structure, providing designers with more and more sufficient basis. In a factory QT25 tower replacement product design, we conducted a finite element analysis and calculation of the tower crane steel structure (jib, jellyfish chassis, tower). The aircraft rapid erection, the overall haul, revolving car under the revolving tower crane