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     熊學(xué)玉  黃  昆  李偉興
    （同濟(jì)大學(xué)預(yù)應(yīng)力研究所 200092）

[提要]  針對(duì)工程中常見(jiàn)的曲線和折線預(yù)應(yīng)力筋布置形式，基于孔道摩擦損失線性化和正反摩擦損失斜率相等的假定推導(dǎo)出具有普遍意義的錨固損失計(jì)算公式，可對(duì)現(xiàn)行規(guī)程公式進(jìn)行修正。
[關(guān)鍵詞]  預(yù)應(yīng)力 錨固損失  反向摩擦 影響長(zhǎng)度 應(yīng)力  孔道摩擦 損失斜率

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