Numerical inversion study on comprehensive capacity of marine steel pipe pile based on field pile loading tests

It is difficult to determin the parameters of the marine soil due to the influence of the marine environment.There is often a need to combine drill sampling, in situ tests with field static load tests on the pile foundation for comprehensive analysis. Based on the static load test of marine steel pipe pile,the sensitivity of the parameters of the marine soil to the stress and deformation of the steel pipe pile under different loads was discussed.Moreover, a series of numerical simulations were carried out to analyze the key parameters.By comparing with the static load test results, including the horizontal, vertical compression and vertical uplift tests,the experience of the laboratory test and the marine engineering standards (e.g. API),the parameters of the marine soil layer were demonstrated under the various load conditions of the steel pipe pile.