碳纤维布加固混凝土粱的疲劳试验研究  

FATIGUE EXPERIMENTAL STUDY ON CONCRETE BEAM STRENGTHENED WITH CARBON FIBER REINFORCED PLASTIC SHEET

作　　者：李源[1] 张兴虎[1] 张保印[1] 王石生[2] 

机构地区：[1]西安建筑科技大学,西安710055 [2]西安铁路分局,西安710050

出　　处：《工业建筑》2004年第4期22-24,48,共4页Industrial Construction

摘　　要：碳纤维布加固混凝土结构是一种新型结构加固方法。对 4根普通钢筋混凝土梁和 3根预应力混凝土梁进行了加固后的疲劳试验研究。试验研究表明 ,碳纤维布加固的混凝土梁经 2 0 0万次疲劳后 ,强度和刚度不会降低 ,不会发生剥落和脆断现象 ,完全符合实用要求。通过理论分析 ,提出了符合铁路规范的承载力计算公式 ,计算值与试验值吻合较好。Concrete structure strengthened with carbon fiber reinforced plastic sheet(CFS) is a new retrofit method in the field of civil engineering.Three reinforced concrete beams and four pre-stressed concrete beams have been tested under fatigue load after they are strengthened with CFS. Based on experimental results, the strengthened beam′s strength and rigidity don′t decrease after 2 million fatigue loads, and the peeling and brittle rupture of sheet don′t happen, which proves the reliability of the CFS in practice. The calculation formula of bending bearing capacty of the strengthened beam that is accord with railway standard have been proposed, whose calculated values show good agreement with the experimental data.

关 键 词：混凝土结构 碳纤维布 结构加固 梁 疲劳试验 受弯承载力 

分 类 号：TU375[建筑科学—结构工程]