超长预应力束孔道摩擦的探讨及应用  

Discussion and Application of the Friction of Extra Long Prestressed Tendons with the Wall of Duct

作　　者：李伟兴[1] 黄鼎业[1] 李德章[2] 

机构地区：[1]同济大学,上海200092 [2]合肥市市政工程办公室,合肥230001

出　　处：《结构工程师》1999年第3期14-17,共4页Structural Engineers

摘　　要：文中基于大量实测数据分析并参照国内外的有关研究资料，对超长预应力束的孔道摩擦系数提出了建议，同时还讨论了预应力筋应力水平对摩擦系数μ的影响，结论中的推荐措施对超长预应力混凝土结构的设计和施工有较大的参考价值。Based on the analysis of a great number of data from site tests and with reference to relevant research works at home and abroad, the friction factor of extra long prestressed tendons with the wall of duct is presented. The effect on the friction factor μ, which is caused by the stress level of prestressed tendons, is also discussed. The suggested measures in the conclusion may be taken as important referential materials to the design and construction of extra long prestressed concrete structures.

关 键 词：预应力束 孔道摩擦 摩擦系数 超长预应力结构 

分 类 号：TU378.04[建筑科学—结构工程]