关键词: 离心模型试验, 涵洞, 软基, 低路堤, 纵向差异沉降

Abstract: Two culvert centrifuge model tests were accomplished for low embankment on soft foundation.The process of culvert model making and lots of problems were introduced concretely.Culvert models were designed with the necessary simplified means and alternative materials.The composite modulus conversion method was used in model pile design. At the same time，the conversion methods related with road surface and traffic load were considered. The results show that，for low embankment on soft foundation sections，the cement mixing pile composite foundation in culvert can reduce the absolute settlement， but the road surface longitudinal differential settlement increased. For reducing vehicle jump phenomenon and increasing traffic comfort，the culvert design of low embankment on soft foundation should control the uneven settlement primarily and the absolute settlement secondarily．

Key words: centrifugal model test, culvert, soft foundation, low embankment, longitudinal differential settlement