工业技术与职业教育2024，Vol.22Issue(3)：17-20,4.
CFRP板加固RC梁预应力损失试验研究
Experimental Study on Prestressing Loss of RC Beams Strengthened with CFRP Plates
张晓彬1
作者信息
- 1. 唐山工业职业技术学院,河北 唐山 063299
- 折叠
摘要
Abstract
In view of the problems of large prestress loss,difficult control of prestress loss and complex prestress stretching process of RC beams strengthened with prestressed CFRP plates,the prestressing loss of 6 RC beams strengthened with prestressed CFRP plates was studied by using two sets of self-designed anchors.The effects of Anchorage type,slotting and prestressing on prestressing loss of reinforced members are studied.The test results show:the total prestress loss of Anchorage MJ1 is less than that of Anchorage MJ2;the total prestress loss increases with the increase of tensile prestress;the total prestress loss of Anchorage MJ1 is less than that of Anchorage MJ2;the total loss of prestressing force is reduced by slotting embedded anchors.The prestress loss can be divided into three types:prestress loss caused by anchor tension deformation,prestress loss caused by sliding between CFRP plates and anchors,and prestress loss caused by stress relaxation of CFRP plates.The use of a single overtensioning method can effectively control the loss of prestress,and the secondary overtensioning of CFRP plates during the anchoring process of anchor MJ1 significantly reduces the loss of prestress.关键词
预应力损失/锚具/预应力CFRP板/不开槽Key words
the prestress loss/anchorage/prestress CFRP/no slot分类
建筑与水利引用本文复制引用
张晓彬..CFRP板加固RC梁预应力损失试验研究[J].工业技术与职业教育,2024,22(3):17-20,4.
