Overcut is a critical issue in pipejacking, especially for the cases with difficult geology conditions or with a curved alignment. For those cases, lubricants are frequently applied to fill the gap or to reduce the friction between soil and pipes. However, it is very difficult to quantitatively determine the real contact condition between the soil and pipe. New technology for soil-pipe interaction measurement is still scarce and requires further development. There are only indirect methods practically available for soil-pipe interaction, and engineering judgment is required for those measurements. In this study, the finite element software ABAQUS is used for the numerical analysis of the pipejacking, including the influence of lubricant property and the overcut on the soil-pipe interaction. The results show that lubrication can significantly reduce the stress concentration surrounding the pipe, the disturbing of the pipejacking on the surrounding soil was increased as the overcut increasing, the soil stress was decreased but the disturbance on the excavation face will be increased.
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