以体外预应力加固旧桥的应用技术为研究背景,对缺少设计资料的旧板梁进行承载力试验,以试验数据为加固基础对同类型的板梁进行体外预应力加固,并对加固后的试验梁进行加固效果评定。为了进一步对加固后的试验梁进行评定,又进行了200万次的疲劳试验,对评定结果做出进一步的研究和验证。 Based on the application technology of prestressed reinforcement of old bridge in vitro, the bearing capacity of old girders lacking design data is tested. The prestressed reinforcement of the same type of girders is tested based on the experimental data. Test beam reinforcement effect assessment. In order to further assess the reinforcement of the test beam, but also carried out 2000000 times the fatigue test, the assessment results to make further research and verification.