A Prediction Method of Self-weight Consolidation Process of Saturated Soft Soil

Abstract

The invention belongs to the technical field of geotechnical engineering related researches and discloses a predicting method of a saturated soft soil self-weight consolidation process. The method includes the steps of firstly, setting the parameters and boundary conditions of the soil model of saturated soft soil, wherein the parameters include soil constitutive relation data points; secondly, dividing the soil model into units of a preset number, and calculating the initial and final void ratio of each unit; thirdly, sequentially calculating the effective stress, permeability coefficient and seepage velocity of the units; fourthly, calculating time increment, and superimposing the time increment with current consolidation time to obtain new total consolidation time; fifthly, acquiring a settling volume according to the seepage velocity and the time increment; sixthly, judging a termination condition is met or not, if so, outputting the self-weight consolidation parameters of the saturated soft soil, and if not, turning to the third step. The predicting method has the advantages that factors such as geometrical nonlinearity, material parameter nonlinearity and the like, calculation errors are reduced effectively, and calculation precision is increased.

Description

technical field [0001] The invention belongs to the related technical field of geotechnical engineering research, and more specifically relates to a method for predicting the self-weight consolidation process of saturated soft soil. Background technique [0002] With the rapid development of my country's economy, land resources in coastal areas are becoming increasingly tense, and large-scale land reclamation projects have generally been carried out in domestic coastal areas, especially in the construction of coastal ports, dredging projects and reclamation projects are generally used for construction. After a period of self-weight consolidation process of dredging silt, the soil property index changes greatly with the soil depth and consolidation time at this stage, and its index is very important for subsequent soft foundation treatment and scientific planning of soft soil foundation design. important to construction. In addition, more and more dredged silt is being produ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for predicting the self-weight consolidation process of saturated soft soil, which comprehensively considers factors such as geometric nonlinearity, material parameter nonlinearity, boundary conditions, and hydrodynamic pressure. The error is effectively reduced and the accuracy is improved, and the prediction method is simple and flexible, which solves the problem of large error in calculation results due to the failure to consider geometric nonlinearity and material parameter nonlinearity at the same time, and it is difficult to be practical in complex engineering environments

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