From subgrade sinking, construction methods and structure system, the paper analyzes reasons for vehicle bump at bridge head, and advances measures to avoid it.
从路基沉降、施工方法和结构体系上对桥头跳车病害进行原因分析，探讨并提出减少桥头跳车的措施。
The fill back of the bridge and culvert, because of its especial position, has compressed not very close-grained sometimes. The sinking is a familiar disease.
桥涵台背回填，由于其位置特殊，往往辗压不实，发生沉降是一种常见病害。
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