无粘结环氧钢绞线在桥梁加固工程中的应用

Application of Unbonded and Epoxy-coated Steel Strand in Bridge Reinforcement

以某公路桥梁加固为例,介绍无粘结环氧钢绞线体外预应力加固设计方案,应用专业桥梁分析软件桥梁博士计算分析该加固方案在该桥加固中的效果,并应用大型有限元程序ANSYS对钢锚固块进行了分析。总结出无粘结体外预应力加固桥梁的具体施工工序以及关键技术,为桥梁加固设计和施工积累一些经验。

Taking a bridge as an example,this paper introduces the reinforcing program with external prestressing system of unbonded and epoxy-coated steel strand and the expected results on the basis of calculations made by doctors in the field,analyzes the steel anchor with the help of ANSYS system.By summing up corresponding construction method and key technologies,this practice will provide some references to the similar cases.