The conversion section of the variable cross-section tower crane is usually weak,which is easy to lead to structural failure. Before the experimental study of a conversion section with the limitation of the size of the testing site,the finite element analysis of the mechanical performance of the complete structure of the conversion section is carried out. Two schemes with the test protocol of 1/2 structure and 1/4 structure are proposed,the ultimate bearing capacity and failure mode of which are studied. The analysis results of the complete structure of the conversion sec-tion are compared to determine a reasonable test scheme. The results show that the complete structure of the conver-sion section is damaged when the upper corner column Z1 reaches the yield strength of the material. The 1/2 struc-ture form better reproduce the mechanical performance of the complete structure of the conversion section than that of 1/4 structure form,providing the reference for the experimental research of the conversion section and the design of the variable cross-section tower crane.
关键词
变截面塔机/塔机转换节/极限承载力
Key words
variable cross-section tower crane/conversion section of the tower crane/ultimate load-bearing capacity
维普
万方数据