公路钢筋混凝土桥梁的体外预应力加固技术

Techniques to consolidating the prestressed forces of reinforcing concrete bridges

本文主要介绍了公路桥梁设计荷载标准、分析了全国的国道、省道和县道公路以及大中型桥梁各级设计荷载的百分比．并详细讨论了体外预应力索加固技术组成部分及优点．说明了体外索加固技术在旧桥加固中的作用及意义。

The paper mainly introduces design load standard of highway bridge. analyses civil trunk highway. provincial highway and country roads. also explains kinds of design load ratio of large and middle bridges. It discusses parts and advantage of external prestressed strengtening technique in details. also makes clear the use and meaning of external prestressed strengthening technique used in existing bridges.