结构工程师2013，Vol.29Issue(3)：114-118,5.
配置HRBF500钢筋的无粘结预应力混凝土梁短期刚度试验研究
Experimental Study on the Short-term Flexural Stiffness of Unbonded Prestressed Concrete Beams with HRBF500 Steel Bars
摘要
Abstract
The flexural stiffness of unbonded prestressed concrete beams with HRBF500 steel bars was studied by lab testing of 8 specimen.The formulae for stiffness estimation in Code for Design of Concrete Structures GB50010-2010 were evaluated.The experimental results show that the original method in GB50010-2010 is in general suitable for unbounded prestessed concrete beams with HRBF500 steel bars.However,the calculations of short-term stiffness are generally lower than those testing values with the average ratio of 0.857.Based on the test results,the unbonded prestressed concrete beam stiffness reduction factor ω were modified.The modified values of stiffness are consistent with the experimental results.关键词
无粘结预应力混凝土梁/高强钢筋/短期受弯刚度Key words
unbounded prestressed concrete beam/ high-strength steel bar/ short term flexural stiffness引用本文复制引用
郑毅敏,袁野,赵勇..配置HRBF500钢筋的无粘结预应力混凝土梁短期刚度试验研究[J].结构工程师,2013,29(3):114-118,5.基金项目
国家科技支撑计划项目课题(2008BAE61B04) （2008BAE61B04）
