部分预应力混凝土超静定结构的设计方法

DESIGN METHOD OF STATICALLY INDETERMINATE PARTIALLY PRESTRESSED CONCRETE STRUCTURES

本文提出了部分预应力混凝土超静定结构的一种新的设计方法──单位次弯矩法。该法以结构中所有部分预应力混凝土构件同时满足两类极限状态为设计原则。另外，基于有效利用次内力的思想，对预应力筋的配置以及利用非吻合束等问题提出了可供实践应用的设计建议。附有设计实例。

The unit secondary moment method, a new design method of statically indeterminate partially prestressed concrete (PPC) structures,is introduced in this paper. On principle of all PPC members in structures must simultaneously satisfy two categories of limit state, this method greatly simplifies design procession. In addition, the problem about how to efficiently utilize the secondary moment due to prestressing is studied in detail, and practical design suggestions on arrangement and curve of tendons are also proposed. A practical design example is illustrated.