中文摘要：

为了了解和掌握空冷支架结构体系的动力特性，分别建立1000MW传统体系的常用布置形式（无悬挑、两边悬挑、三边悬挑、四边悬挑）和带斜撑新体系四边悬挑模型并对其进行分析，分析结果显示空冷支架结构扭转效应明显。对比两种体系分析结果可得，带斜撑新体系有效的提高了结构刚度。

英文摘要：

In order to understand and master the dynamic characteristics of air-cooled condenser support structure system, the finite models of 1000MW traditional system and new system with diagonal bracing were builted, and the analysis was also finished. The layout forms of traditional system included without overhung, two-side overhung, trilateral overhung and quads overhung. The new system＂s layout form is just quads overhung. The analysis results demonstrated that torsion effect of air-cooled support system is obvious. The conclusion that the new system with diagonal bracing enhanced the stiffness of structure effectively was came to by comparing the analysis of two systems.