宜昌预应力卵形消化池摩阻损失及张拉伸长值实测  

The Site Measurement of the Friction Loss and the Elongation Value of the Prestressing Tendons in the Project of Yichang Egg-shaped Sludge Digester

作　　者：刘军进 潘宠平[1] 吴宇波 孙文礼 

机构地区：[1]中国建筑科学研究院,北京100013 [2]宜昌市城市建设投资开发有限公司,443000 [3]中国第一冶金建设公司,武汉430081

出　　处：《特种结构》2008年第4期17-20,共4页Special Structures

摘　　要：为了解宜昌卵形消化池结构环向预应力筋的有效张拉应力,进行了预应力摩阻损失测试工作,并将测试束的张拉伸长实测值和计算值进行了对比。依照现场施工方法,摩阻损失测试分为成束预应力筋整束张拉和成束预应力筋单根分批张拉两种情况进行。实测结果可为该类结构的预应力设计和施工提供参考。To determine the effective stress of the prestressing tendons in the egg-shaped sludge digester, the friction loss is tested in site. The tested elongation value of the prestressing tendons is contrasted with the calculation results. According to the site condition, there are two cases of the friction loss test, one is a branch of the tendons being prestressed integrity, and another is prestressed separately. The test results can be referenced by the designer and the construction company in similar projects.

关 键 词：卵形消化池 预应力 摩擦损失 变角垫块 张拉伸长值 

分 类 号：TU378[建筑科学—结构工程]