路面结构拼接部位病害是公路扩建工程中常见问题。因设计、施工方面的差异,前后施工的拼接路基、路面存在过渡区,这个过渡区是病害发生的潜在区域。文章针对合宁与合安高速原匝道拼接位置出现的病害进行了现场检测和评价,分析病害出现的主要原因,提出了同类工程设计、施工中应注意的关键环节。 Splicing parts of pavement structure disease is a common problem in highway expansion project. Due to the differences in design and construction, there are transitional areas for the splicing subgrade and pavement before and after construction, and this transitional area is a potential area for disease occurrence. This article has carried on on-the-spot inspection and the appraisal to the disease appearing on the place where the original ramp of He-ning and He-an expressway had been stitched, analyzed the main causes of the disease occurrence and proposed the key links that should be paid attention to in the similar project design and construction.