预应力FRP加固混凝土结构技术的比较研究  

Comparative Study on Concrete Strengthening Technologies With Prestressed FRP Materials

作　　者：吴昌佩 吴刚[2] 董志强[2] WU Changpei;WU Gang;DONG Zhiqiang(Yancheng Architectural Design and Research Institute Co.,Ltd.,Jiangsu Yaneheng 224002;School of Civil Engineering,Southeast University,Nanjing 211189)

机构地区：[1]盐城市建筑设计研究院有限公司,江苏盐城224002 [2]南京东南大学土木工程学院,南京211189

出　　处：《高科技纤维与应用》2018年第4期12-20,共9页Hi-Tech Fiber and Application

摘　　要：纤维增强复合材料(FRP)具有轻质、高强和耐腐蚀的特点,常用于混凝土结构加固中。但FRP弹性模量较低,作为加固材料使用时,对结构刚度的提升有限。为此,可通过对FRP施加预应力的方式来一定程度地避免上述问题。本文对近年来研发的预应力FRP加固混凝土结构技术的最新研究进展进行了比较分析,对涉及的关键锚固技术进行了介绍,并展望了预应力FRP加固技术未来的发展方向。本文有助于工程技术人员对该项新技术的理解和把握,有助于该项技术的推广应用。Fiber reinforced polymers（ FRP） have properties like light weight,high strength and corrosion resistant,and are often used as strengthening materials for reinforced concrete（ RC） structures. However,the FRP has low elastic modulus and,as a strengthening material,has a limited effect on the improvement of the structure stiffness. Nevertheless,the above problems can be avoided to some extent by prestressing the FRP materials. In this paper,the latest research progress of the strengthening technologies with prestressed FRP materials are comparatively analyzed,and their critical anchoring techniques and future developments are also described. This paper is helpful to engineers to understanding this new technology,and it will also contribute to the popularization and application of the technology.

关 键 词：预应力 纤维增强复合材料 加固混凝土结构 锚固技术 组合加固 

分 类 号：TU528.58[建筑科学—建筑技术科学]