铁道科学与工程学报2016，Vol.13Issue(5)：863-870,8.
既有装配式空心板桥单板抗弯承载力退化分析
On bearing capacity deterioration of In service prefabricated prestressed concrete hollow slab bridge
摘要
Abstract
This paper studied the bearing capacity deterioration of the prefabricated prestressed concrete hollow slab bridge based on existing durability models.The features of regional environmental and climatic conditions in Henan province were taken into account in combination with the effects of seasonal freeze thawing,the chloride ion erosion in the deicing salt and the concrete carbonization on the bearing capacity of concrete hollow slab bridge.The results show that seasonal freezing and thawing cycles and general atmospheric carbonization exert insignificant influence on the bearing capacity of the hollow slab structure,whereas the influence of the chloride ion erosion in the deicing salt on the bearing capacity is obvious.On the basis of the findings obtained,the time-history curve of the bending capacity of prestressed concrete slab was generated,which can provide useful ref-erence for reinforcement and reconstruction of similar types of bridges.关键词
预应力混凝土空心板/承载力退化/耐久性/抗弯Key words
prestressed concrete hollow slab/bearing capacity deterioration/durability/bending分类
交通工程引用本文复制引用
马培培,陈淮,陈代海,梁岩..既有装配式空心板桥单板抗弯承载力退化分析[J].铁道科学与工程学报,2016,13(5):863-870,8.基金项目
郑州市交通运输委员会科技资助项目 （）
