预应力钢-混凝土组合梁的刚度  

STUDY ON RIGIDITY OF PRESTRESSED STEEL-CONCRETE COMPOSITE BEAMS

作　　者：聂建国[1] 秦凯[1] 周天然[1] 高璀旭[1] 

机构地区：[1]清华大学土木系,北京100084

出　　处：《工业建筑》2003年第12期6-8,共3页Industrial Construction

基　　金：国家杰出青年科学基金资助项目 (5 0 0 2 5 82 2 );北京市自然科学基金资助项目 (80 0 2 0 11);北京市科委资助项目 (95 5 3 2 0 10 0 )

摘　　要：建立了预应力钢 -混凝土组合梁考虑预应力筋在荷载作用下的内力增量和滑移效应的挠度计算模型及折减刚度的修正公式 ,计算结果与实测值吻合良好。建议的计算公式对预应力钢A formula of calculating the deflection of prestressed composite beams is derived with account of the stress increase of steel tendons and slip.A modified reduced rigidity method is provided based on the above theory.The predicting results show a good agreement with the measured deflections.The proposed formula is valuable for the analysis and design of prestressed steel-concrete composite beams.

关 键 词：预应力钢-混凝土组合梁 刚度 换算截面法 折减刚度法 荷载 

分 类 号：TU398.9[建筑科学—结构工程]