Journal article

Effect of sitting time on the breakout force of mat foundation on soft marine clay seabed

Q Zhang, T Fang, G Ye, G Liu, R Wang, Y Tian

Ocean Engineering | Published : 2021

Abstract

Jack-up offshore platform mat foundation has lower requirements on the bearing capacity on clay seabed than spudcan foundation, which is more suitable for the soft clay seabed. It is of great significance to reveal the mechanism of breakout force of mat foundation to ensure the safety and stability of offshore platform. In this study, field tests with different consolidation times were conducted to investigate the breakout force of mat foundation on soft marine clay seabed. Field results show that the suction generated by negative pore pressure in the seabed soil accounted for most of the breakout force, generally up to 90%. Then, the effects of consolidation time, preloading and uplift rate..

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