摘要
针对桥梁墩台周围堆载引起桥梁结构偏斜的工程病害,通过在堆载作用下桥梁墩台布设测点,跟踪观测了堆载引起桥梁墩台与基础的变位性状。基于观测分析成果,利用BOZOZUK提出的分析标准,对实体工程的受损程度进行了评价,表明该桥梁已严重受损;提出了采用预应力锚索技术对偏移桥墩进行纠偏和采用预应力抗滑桩进行防治的联合处治技术,并进行了加固和纠偏效果评价;指出在山区或重丘区修建桥梁工程时,沿线弃方堆载于桥下,会引起桥梁墩台的偏移而造成桥梁结构无法正常使用甚至破坏。
As to the engineering disease caused earth piling load around pier and abutment, by setting measuring spots under the earth piling load at bridge pier and abutment, the displacement feature of pier and abutment as well as the foundation caused by earth piling load is tracked and measured. On the basis of the result of observing analysis, using analytical standard set by BOZOZUK, the extent of damage to practical engineering is evaluated, which indicates that the bridge has been seriously damaged. In addition, the combination technique of applying prestressing anchor cable method to the error correction of pier displacement and prestressing anti-slide pile method to prevention is put forward, and the evaluation of strengthening and error correcting is also conducted. Lastly, authors point out that when building bridges in mountainous regions or hilly land, piling excavated earth under bridge along the line may cause the displacement of bridge pier and abutment so that the bridge structure can not work properly, even is damaged.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2004年第3期74-77,共4页
China Journal of Highway and Transport
关键词
桥梁工程
堆载
位移监控
预应力锚索
抗滑桩
纠偏
bridge engineering
earth piling load
displacement monitoring
prestressing anchor cable
anti-slide pile
error correction
