洛阳博物馆新馆大跨度框架梁预应力损失测试研究  

Prestressing Loss Test of the Large Span Frame Beam of Luoyang New Museum

作　　者：李岐山 张伟 赵玉军 

机构地区：[1]河南国安建设集团有限公司,河南洛阳471000

出　　处：《施工技术》2015年第15期35-38,共4页Construction Technology

摘　　要：洛阳博物馆新馆工程大跨度预应力框架梁采用后张有黏结预应力施工工艺,施工过程中应加强其预应力施工控制,特别是张拉过程中的预应力损失监控及测试十分重要。通过精确计算出摩阻损失系数,测定出特征截面的应力和应变值,并与理论设计验算值进行对比分析,可达到精确控制预应力施工质量的目的。In Luoyang New Museum, the prestressing loss monitoring and testing play very important role in the process of tensioning, especially for the prestressed control of the construction sequence of a large span prestressed frame beam adopting the post-tensioned prestressed technology. The measured values of stress and strain of the beam characteristic cross section are compared with the theoretical design calculation ones, based on the coefficient of friction loss accurately obtained in this paper. Finally, it can achieve the purpose of precise control of the prestressing construction quality.

关 键 词：预应力 框架梁 后张法 施工质量控制 预应力损失 

分 类 号：TU378[建筑科学—结构工程]