调直对钢筋力学性能的影响分析  

Analysis of the Straightening Effect on Mechanical Properties of Steel Bars

作　　者：曾力[1] 杨淑慧[2] 张猛[1] 

机构地区：[1]郑州大学土木工程学院,郑州450001 [2]郑州大学水利与环境学院,郑州450001

出　　处：《河南科学》2009年第10期1282-1284,共3页Henan Science

基　　金：河南省教育厅科技攻关项目(2008A560015)

摘　　要：以HRB400级钢筋中的细直径钢筋为研究对象,对其调直前后的力学性能和粘结锚固性能进行了试验,通过对实验结果的分析,得出调直后的钢筋各性能指标均有降低,但仍满足标准规范的规定,工程应用时,可不考虑调直对HRB400级细直径钢筋力学性能的影响,但调直对钢筋的粘结锚固性能影响较明显,工程中应予以考虑.为真正反映钢筋的延性,建议采用δgt作为钢筋延性性能检验的指标.For the purpose of easy-processing before use,the curving finished steel bars are usually straightened in projects.The paper tests the mechanical properties and anchorage bond performance of HRB400（Ⅲ）thin diameter steel bars in period of before and after straightened.With analysing the test results,it concludes that although all kind property indexs of HRB400（Ⅲ）thin diameter steel bars reducing kind of,but which can fit in with the Code on the same,so it can be ignored in real work.Further more,it must be pay more attention to the anchorage bond performance of HRB400 （III）thin diameter steel bars, which reducing more obvious after straightened, and to reflecting the ductility of steel bars in deed, it should adopt 8s~ as testing index of ductility properties of steel bars.

关 键 词：钢筋 调直 力学性能 粘结锚固 

分 类 号：TU375[建筑科学—结构工程]