涵洞病害是高速公路在黄土区域中的典型病害之一.对兰西高速公路在穿越黄土区域中的涵洞病害进行了实地调研,基于此总结了黄土地区公路涵洞出现的7种典型病害类型,即为涵洞下沉、基础开裂、护锥翼墙沉降开裂或倾斜错位、涵节错位或填缝脱落、内部或进出口积水淤塞、涵背填土塌陷、涵顶路面开裂等,分析了其基本特征,并从黄土工程特性深化认识、设计与施工中考虑微地貌形态、日常管理与维护3个方面对涵洞病害成因进行了分析.该研究成果可以进一步加深对黄土区涵洞病害机理的认识,对黄土地区高速公路涵洞病害的防治、勘察、设计和施工提供理论指导和科学依据.%Culvert disease is one of the typical diseases of highways in loess area,therepresentative types and basic characteristics of loess culvert diseases are summarized through spot investigation of Lanzhou-Xining Highway in this paper.The types of culvert disease in loess area mainly include culvert sinking,foundation fissure,subsidence cracking or dislocation of wing wall,culvert section mismatch or caulking falling off,internal water silting,lateral water silting,filling collapse behind culvert,pavement cracking on the top of culvert.Meanwhile,causes of culvert disease are analyzed combined with deepening the understanding of loess engineering characteristics,considering the micro morphology in the design and construction,daily management and maintenance.The investigation results of this paper could further promote the understanding of diseases mechanism of culvert in loess region,and provide theoretical guidance and scientific basis for loess culvert disease prevention,investigation,design and construction.
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