无粘结预应力筋的计算

Calculation of Unbonded Prestressing Tendon

本文提供了无粘结预应力筋长度、张拉伸长值和预应力值分布的工程适用与精确计算公式,可供单跨及连续多跨的梁和板的设计与施工应用。文中并有例题说明和由各种公式计算所得结果的比较。

In this paper, practical and precise formulas for calculating cut length of unbonded prcstressing tendon, its extended length due to prestressing and the distribution of effective prestressing along the tendon length are presented. They can be adapted for the design and construction of simple span beam, malti-span continuous beam and slab. Numerical example and comparison of results calculated by different formulas are also given in the paper.