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双曲拱桥是20世纪60—70年代我国桥梁工程师为解决特殊年代经济建设的需求,经过自主实践首创的一种桥型。当时在全国范围内进行推广,建设了数量众多的双曲拱桥。随着社会经济的发展,在长期荷载的作用下,再加上交通量的不断增加,这些桥梁逐渐成为危桥,出现各种病害。以某一出现病害的双曲拱桥为例,分析了该桥的病害成因,并根据病害情况进行维修方案的设计,对维修过程及施工过程中应注意的事项进行详细叙述,总结出双曲拱桥加固改造的常规方法。
The double-curved arch bridge is a kind of bridge type pioneered by our own engineers in order to solve the special economic construction needs of bridge engineers in our country from 1960s to 1970s. At that time, a nationwide promotion was carried out to build a large number of double-curved arch bridges. With the development of society and economy, under the action of long-term load and coupled with the continuous increase of traffic volume, these bridges have gradually become dangerous bridges with various diseases. Taking a double-curved arch bridge with a disease as an example, this paper analyzes the cause of the disease and designs the maintenance plan according to the condition of the disease. The maintenance process and the matters needing attention in the construction process are described in detail. Reinforcement of the conventional methods.