螺旋肋钢丝(PC棒)预应力传递长度的试验研究  

Experimental Study on the Transmission Length of Prestressed Reinforcement with Helical Rib(PC Steel Bars) in Concrete

作　　者：刘立新[1] 刘中琦[1] 

机构地区：[1]郑州大学土木工程学院,河南郑州450001

出　　处：《郑州大学学报（工学版）》2009年第4期11-14,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家科技支撑计划项目(2008BA61B03)

摘　　要：螺旋肋钢丝(简称PC棒)是我国新研制开发的用于预应力混凝土结构的新型钢丝.通过对28个先张法构件端部区域混凝土应变的量测,分析了PC棒预应力传递长度范围内混凝土应变和应力的变化规律以及主要影响因素,提出了PC棒预应力传递长度计算公式的建议,为PC棒的工程应用提供了依据.This paper presents the results of transmission length tests on 28 pre-tensioned members made of prestressing reinforcement with helical rib(PC steel bars).The compressive strain and stress of concrete within the prestressing transmission zone for the PC steel bars of the members are analyzed,and the factors affecting the transmission length of PC steel bars in concrete are also discussed,and a formula for calculating the transmission length is suggested.The result can provlde reference for the application ...

关 键 词：PC棒 预应力 传递长度 

分 类 号：TU511.32[建筑科学—建筑技术科学]