预压应力混凝土大管桩钢绞线与水泥浆体粘结力试验研究  

Bonding Strength Between the Steel Strand and Cement in Prestressed Concrete Pipe Piles

作　　者：董建纲 张吉顺 

机构地区：[1]上海同济建设工程质量检测站,上海200092

出　　处：《结构工程师》2013年第6期157-161,共5页Structural Engineers

摘　　要：大管桩采用后张法张拉、钢绞线与水泥浆体锚固的方法制作。桩身预应力性质及钢绞线与水泥浆体锚固的安全性取决于钢绞线与水泥浆体之间的剪应力分布、大小,以及两者之间的粘结强度。提出了测试钢绞线与水泥浆体之间的剪应力分布及大小的方法,并在试验中得出实测结果,分析了大管桩钢绞线与水泥浆体剪应力的安全性能,并可为进一步提高大管桩的性能作出理论铺垫。The large pipe piles were produced by utilizing post-tensioning method and anchoring the steel strand and cement.It was the sheer stress type,intensity and bonding strength between the steel strand and cement that determines the prestress character and anchoring strength.A method for measuring the sheer stress distribution and intensity between the steel strand and cement was proposed in this article.The sheer stress safety was analyzed by the experimental test results.The work presents the theoretical principle for enhancing the large pipe pile＇s performance infuture.

关 键 词：大管桩 预应力 钢绞线 锚固 

分 类 号：TU473.1[建筑科学—结构工程]