熊学玉  黄  昆  李伟兴
    （同济大学预应力研究所 200092）

[提要]  针对工程中常见的曲线和折线预应力筋布置形式，基于孔道摩擦损失线性化和正反摩擦损失斜率相等的假定推导出具有普遍意义的锚固损失计算公式，可对现行规程公式进行修正。
[关键词]  预应力 锚固损失  反向摩擦 影响长度 应力  孔道摩擦 损失斜率

In accordance with the common arranging forms of prestressed multipart curved or linear reinforcement, this paper deduces a set of formulae for the loss of prestressing due to the deformation of anchorage devices and the inner withdrawal of reinforcement. The formulae possess such general meaning that they can be applied in a more comprehensive extent, Meanwhile, some faults in the current code are also discussed.
Keywords: prestressing loss; deformation; anchorage device; withdrawal; friction; influence length