Numerical simulation method suitable for influence of pile shoe plugging on adjacent pile foundation

Abstract

The invention discloses a numerical simulation method suitable for the influence of pile shoe plugging on an adjacent pile foundation, and the method comprises the following steps: S1, building a numerical calculation analysis model which comprises a soil body model, a pile shoe foundation model and a pile foundation model according to an actual working condition, and the soil body model comprising an Euler region and a Lagrange region; S2, endowing the established model with material attributes; S3, assembling the established model; S4, establishing a corresponding analysis step; S5, establishing interaction among the pile shoe foundation model, the pile foundation model and the soil body model; S6, establishing a reasonable boundary condition; S7, performing material attribute assignmenton the soil body in the Euler area and applying a ground stress field to the soil body; and S8, meshing the established numerical calculation analysis model, and submitting calculation to obtain results of displacement and bending moment of the pile foundation model. The method conforms to engineering practice. The method is simple, clear and easy to calculate, and related parameters are easy todetermine and reliable.

Description

technical field [0001] The invention belongs to the technical field of numerical simulation, and in particular relates to a numerical simulation method applicable to the influence of spud shoe insertion and extraction on adjacent pile foundations. Background technique [0002] In recent years, the rapid development of the domestic economy has brought about a large amount of energy demand, and the domestic land oil and gas resources have been developed to a high degree, and the onshore exploitable energy is getting less and less. Large-scale offshore oil and gas resource development has become an inevitable development trend. During the drilling process of the drilling ship, it is necessary to penetrate the large-diameter spud cans to a certain depth below the seabed mud surface near the pile foundation platform to provide the necessary bearing capacity for the drilling ship operation, which will inevitably have adverse effects on the adjacent pile foundation , and even enda...

AI Technical Summary

Problems solved by technology

[0006]1. The cost of using centrifugal model test is too high, the process is complicated, and it is difficult to carry out large-scale;

[0007]2. Conventional finite element calculations have high limitations and unstable results

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