预应力CFRP布加固混凝土桥梁技术  

Technique of Prestressed CFRP Sheets in Strengthening RC Bridge Girders

作　　者：周小蓉[1] 李红宝[1] 沙吾列提.拜开依 庄江波[2] 叶列平[2] 

机构地区：[1]广州市中心区交通项目领导小组办公室,广州510030 [2]清华大学土木工程系,北京100840

出　　处：《广州建筑》2008年第2期12-17,共6页GUANGZHOU ARCHITECTURE

摘　　要：由于各种原因,目前我国有很多混凝土桥梁需要维修或加固。近年来,采用粘贴CFRP布加固混凝土结构的技术得到广泛应用。为充分利用CFRP布的高强特点,对CFRP布施加预应力后,再粘贴于梁底进行加固,可以取得更好的加固效果。本文介绍预应力CFRP布在混凝土桥梁加固中的应用技术及其施工阶段的计算方法。Due to many causes, a large number of existing bridges need to be strengthened. In recent years, the external bonded of CFRP sheets for reinforced concrete structures strengthening has been gaining an extensive application. To obtain a more effective use of CFRP＂ s high strength and make an effectively strengthening, the concept of prestressing can also be applied to CFRP sheets the flexural strengthening of RC girders. The application technique of prestressed CFRP sheets and the calculation during the construction is introduced in this paper.

关 键 词：预应力 碳纤维布 桥梁 混凝土 预应力损失 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]