预应力度法的结构设计应用

Application of the Method of Degree of Prestress in Structural Design

笔者提出了一个预应力度法,此方法比现行规范的设计方法简单。此外,该方法中具有预应力度的概念,结构抗裂安全系数概念以及应力的概念。文中简要介绍了预应力度的公式与其相互比较,预应力度法的设计步骤,以及在北京、天津、南京等地的一些新预应力混凝土建筑结构中的实际应用情况。同时,这样的概念也反应在混凝土结构设计的新规范中。

A method of degree of prestress, which is simpler than the method in the current code, was proposed by the author. The proposed method involves the ideas of degree of prestress, of structural factor for safety against cracking and of stresses. This paper presents briefly the formulae, when their degrees of prestress are compared, the design procedure of the method of degree of prestress and the practical application in some new prestressed concrete building structures in Beijing, Nanjing and Tanjing etc. And such idea also has been reflected in newly revised code for design of concrete structures.