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装配式连续箱梁是上世纪90年代国内推出的一种先简支后连续结构形式,很好地解决了简支梁桥桥面连续裂缝的问题,行车舒适性有了很大提高,因此该结构在全国得到了大面积推广使用。但是因为这种结构横向联系弱、结构整体性较差,在运营阶段极为容易出现横竖向裂缝,本文通过工程实例,针对此提出一些加固设计建议,以供参考借鉴。
The prefabricated continuous box girder is a kind of continuous prefabricated continuous structure which is introduced in the country in the 1990s. The prefabricated continuous box girder has solved the problem of continuous cracks in the simply supported girder bridge deck and has greatly improved the driving comfort. Therefore, Structure in the country has been a large area to promote the use of. However, because of this structure, the horizontal linkages are weak and the structure is poor in integrity. Vertical and horizontal cracks are very easy to appear during the operation phase. Based on the engineering examples, some suggestions for reinforcement design are put forward for reference.