摘要
采用预张紧钢丝绳加固技术在混凝土构件抗剪加固中有着独特优势,通过在斜截面抗剪承载力极限状态验算公式中引入预应力钢丝绳加固引起的构件剪力提升项,可以更加精确地进行构件抗剪承载力验算,通过在混凝土拐角处设置钢丝绳减磨分离器,控制钢丝绳下料长度,利用接头垫片措施减少预应力损失,完善钢丝绳U型加固技术。
The technology of reinforcement with pre-tensioning steel rope has unique advantages in the shear reinforcement of concrete component.By introducing the shear lift term caused by the reinforcement of prestressed steel rope into the checking calculation formula of the ultimate shear capacity of oblique section,the shear capacity can be checking calculated more accurately.The steel rope anti-grinding separator was set at the concrete corner to control the laying length of steel rope,the joint gasket measures were used to reduce the prestress loss,and the U type reinforcement technology with steel rope was improved.
作者
封明明
汪小鹏
FENG Ming-ming;WANG Xiao-peng(Xi’an Highway Research Institute,Xi’an,Shaanxi 710065,China)
出处
《山西交通科技》
2020年第4期130-132,150,共4页
Shanxi Science & Technology of Transportation
基金
陕西省交通运输厅科研项目——预张紧钢丝绳加固技术在混凝土桥梁中的应用研究(13-17K)。
关键词
钢丝绳
U型加固
承载力验算
应力损失
steel rope
U-shaped reinforcement
checking calculation of bearing capacity
stress loss
