预应力钢绞线和CFRP布加固桥梁结构后对疲劳性能的影响  

The effect of prestressing steel strand and CFRP sheets after reinforcement on the fatigue test of the bridge structure

作　　者：窦远明[1] 张硕[1] 刁硕[1] 肖绚楠 杨雨兮 

机构地区：[1]河北工业大学土木与交通学院,天津300401

出　　处：《四川建筑科学研究》2017年第2期59-64,共6页Sichuan Building Science

基　　金：河北省交通运输厅科技计划(Y-2012046)

摘　　要：以某高速公路改扩建工程中的预应力混凝土空心梁作为原型,设计了6根试验梁作为相似模型,研究了预应力钢绞线和CFRP布加固试验梁后对疲劳性能的影响。试验结果表明,预应力钢绞线加固可减小梁体弯曲变形,CFRP布加固可限制梁体裂缝扩展。Six test beams was used to similarity model to study the effect of prestressing steel strand and CFRP sheets after reinforcement on the fatigue test of the bridge structure, which used prestressed concrete hollow beams of one of the expressway extension project as the prototype. The results demonstrated that steel strand reinforcement could reduce beam’s bending and CFRP sheets reinforcement could limit the degree of the development of concrete cracks.

关 键 词：预应力钢绞线 CFRP布 加固 钢筋混凝土梁 疲劳 

分 类 号：U443.35[建筑科学—桥梁与隧道工程]