摘要
针对T型刚构桥存在的悬臂端严重下挠、横隔板出现裂缝及桥面铺装破损严重等病害,在静载试验的基础上,分析病害的成因并提出体外预应力加固设计方案,以恢复桥梁线型,改善行车条件,提高结构的耐久性。理论分析表明,采用体外预应力技术对T型刚构桥进行加固后,桥梁在正常使用极限状态及承载能力极限状态的各项技术指标均满足规范要求,达到预期加固效果。
Aiming at perpetual downward deflection of the cantilever end,diaphragm cracks, pavement cracks and so on of the T-shaped rigid frame bridge,the reasons causing defects are analyzed on the basis of static loading test in this paper.Design proposal of external pre-stressed reinforcement is proposed in order to restore bridge linear,improve traffic conditions and the durability of the structure. Theoretical analysis shows that various technical indicators meet the regulatory requirements in the limit state of...
出处
《森林工程》
2008年第2期53-55,共3页
Forest Engineering
关键词
T型刚构
病害分析
加固
T-shaped rigid frame
defects analysis
reinforcement
