《建筑机械》1988年第2期刊登了任远志同志撰写的“塔式起重机塔身结构的稳定计算”一文(以下简称“任文”),学习后,提出以下几点不同看法,供探讨。由于《起重机设计规范》(GB3811—83)所提供的三项公式(25)、(26)、(27)是两端铰支的力学模型,“任文”拟用“变形等效法”来转换为一端嵌固、一端自由悬臂柱力学模型,笔者认为是欠妥当的。因为两者所发生的变形虽相等,并不意味着最大弯矩与最大切力相等。现分析如下: “Construction Machinery” in 1988 the second issue of Comrade Ren Yuanzhi autobiography “tower crane tower structure stability calculation” article (hereinafter referred to as “Ren Wen”), after learning, put forward the following different views for discussion. As the three formulas (25), (26), and (27) provided by “Code for Design of Crane” (GB3811-83) are mechanical models with hinged joints at both ends, Ren Wen intends to convert by using “deformation equivalent method” One end embedded, one end free cantilever cylinder mechanical model, I think it is inappropriate. Because the two deformations are equal, does not mean that the maximum bending moment and the maximum shear force equal. Now analysis is as follows: