后张体外预应力加固技术及其工程应用  

EXTERNAL POST-TENSIONING TECHNIQUES AND APPLICATIONS FOR STRUCTURES RETROFITTING

作　　者：刘航[1] 高会宗 杨学中[1] 吴文奇[1] 

机构地区：[1]北京市建筑工程研究院有限责任公司,北京100039 [2]中广国际建筑设计研究院,北京100045

出　　处：《建筑技术》2012年第1期49-52,共4页Architecture Technology

摘　　要：对后张体外预应力技术在结构加固工程中的应用进行了较为全面的分析。探讨了后张预应力加固钢筋混凝土受弯构件的设计计算方法,提出了预应力筋的常用束形布置和节点做法,并结合某工程实例分析了预应力加固框架梁的有关施工方法。后张预应力技术目前在国际上还被用于砖砌体结构的抗震加固,对其原理和效果也进行了简要的介绍。The external post -tensioning techniques used for structures retrofitting are analyzed comprehensively. The design and calculating methods of RC flexural members strengthened with external tendons are discussed. Meanwhile, the general profiles of external tendons and the joint detail are also presented. Moreover, the construction techniques of using post-tensioning to strengthening frame beams are introduced. Post-tensioning is also used as seismic retrofitting techniques for masonry structures in foreign countries and the related principles and methods are also introduced briefly.

关 键 词：体外预应力 后张法 加固 受弯构件 砌体结构 

分 类 号：TU746.3[建筑科学—建筑技术科学] TU757