| 1. | Finally , with the research results , the author analyzes the two tv tower drums : the normal concrete tower and the presrtressed concrete tower . at the same time , the calculation reliability of prestressed concrete tower drum and dropping - coefficient of stiffness established in this paper has been proved 最后,利用本论文的研究成果,对普通混凝土电视塔和预应力电视塔进行实例分析,验证了本文建立的塔筒计算公式和刚度降低系数计算公式的可靠性。 |