采用图解法，对内悬浮外拉线抱杆分解组塔方法进行了受力分析，找出封闭多边形受力关系及各部受力间的相互影响，分析了各种工况下的受力大小及成因，提出了施工技术设计与吊装中的控制措施，可为铁塔组立施工技术设计及具体吊装实施提供参考。

Force analysis is conducted on the internal-suspended and external-guyed rod-holding tower erection by using diagrammatic solution method in order to find out the forces relationship of an enclosed polygon and their interactions. The forces and their genesis are analyzed for various working conditions for this erection method. And the construction technology design and controlling measures for davit-mounting are proposed, which can provide a reference for tower erection technology design and for practical davit-mounting.