随着超载车辆急剧增加和高速公路运营年限的延长,高速公路小桥涵出现的“单板受力”病害的情况越来越普遍。通过对“单板受力”现象的表面特征、产生原因分析,提出了处治方法及施工过程中应注意的注意事项。 With the rapid increase of overloaded vehicles and the extension of the expressway service life, it is more and more common that the “single board stress” disease occurs in the small bridges and culverts of expressways. Through the analysis of the surface features of “single board stress” phenomenon, the paper put forward the treatment methods and precautions that should be paid attention to in the process of construction.