体外预应力法进行简支梁桥加固的研究  

作　　者：马丁红 

机构地区：[1]甘肃省交通科学研究院有限公司,甘肃兰州730050

出　　处：《科技创新与应用》2019年第15期166-168,共3页Technology Innovation and Application

摘　　要：文章介绍了体外预应力加固法的原理和应用。通过某桥加固实例的分析可以看出:体外预应力加固时,通过选取合理的钢绞线数量和线形布置,可以同时提高主梁的正截面抗弯承载力和斜截面抗剪承载力,从而达到改善旧桥使用性能并提高其极限承载力的目的,取得很好的加固效果。This paper introduces the principle and application of external prestressing reinforcement method. Through the analysis of a bridge reinforcement example, it can be seen that the flexural capacity of the normal section and the shear capacity of the inclined section of the main beam can be improved at the same time by selecting a reasonable number of steel strands and linear arrangement in the external prestressing reinforcement, so as to improve the performance of the old bridge and improve its ultimate bearing capacity, and achieve a good reinforcement effect.

关 键 词：体外预应力加固法 加固 线形布置 抗弯承载力 抗剪承载力 

分 类 号：TU378.2[建筑科学—结构工程]