The accurate prediction of spudcan penetration resistance plays an important role in the safety of work on Jack-up drilling platforms. In this work, by carrying out small-scale model tests, the influence of penetration speed on the pile-penetration performance of bucket spudcans in saturated sand was studied, and a computational formula for calculating the bucket spudcan penetration resistance was developed based on the bearing capacity of the ground. Subsequently, the penetration process of the bucket spudcan was simulated by the coupled Eulerian-Lagrangian (CEL) finite element method, and the results were compared with test results. The investigation results showed that, when the penetration speed of the spudcan is 0.1~0.3 mm/s in the model test, the penetration process of the bucket spudcan can be regarded as a quasi-static process, and the penetration resistance varies little. The penetration resistance of the bucket spudcan at a certain depth can be calculated accurately by using the Hansen and Vesic formulas. The CEL finite element method can simulate the bucket spudcan penetration process exactly, and the simulation results were in good agreement with the test results when the penetration speed of the spudcan was 0.1~0.3 mm/s.
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吴曲楠,刘润,张海洋,王宇飞.筒型桩靴在饱和砂土中的贯入阻力研究[J].地震工程学报,2018,40(6):1183-1190. WU Qu'nan, LIU Run, ZHANG Haiyang, WANG Yufei. Bucket Spudcan Penetration Resistance in Saturated Sand[J]. China Earthquake Engineering Journal,2018,40(6):1183-1190.