Method and system for evaluating vertical bearing capacity of pile foundation

Abstract

The invention provides a method and system for evaluating vertical bearing capacity of a pile foundation, and belongs to the technical field of pile foundation performance detection. The method comprises the steps that structural parameters of a to-be-evaluated pile foundation are obtained; the obtained structural parameters of the to-be-evaluated pile foundation are input into a trained prediction model, and a dynamic and static comparison coefficient prediction value is obtained; the prediction model is obtained through training of a training set, and the training set comprises the structural parameters of a plurality of pile foundations and labels for marking corresponding dynamic and static comparison coefficients of the structural parameters; and the vertical bearing capacity of the pile foundation is calculated based on the dynamic and static comparison coefficient prediction value in combination with a pre-designed allowable pile foundation settlement value and a pile foundation dynamic stiffness measured value. According to method and system for evaluating the vertical bearing capacity of the pile foundation, the method and system for evaluating the vertical bearing capacity of the pile foundation can accurately and conveniently perform training evaluation on data of complex causes, can ensure the accuracy of evaluation prediction through the training precision, predicts a dynamic and static comparison coefficient value, and makes up for the defect that the dynamic and static comparison coefficient value is not accurate depending on engineering experience. When the method and system for evaluating the vertical bearing capacity of the pile foundation is applied to engineering practice, the vertical residual bearing capacity of the pile foundation can be quickly and accurately evaluated.

Description

Technical field [0001] The present invention relates to the field of pile foundation performance detection, and more particularly to a method and system for vertical bearing capacity assessment based on machine learning. Background technique [0002] As an important part of the lower structure of the bridge, the pile foundation can be smoothly transmitted to the surrounding soil layer. It has the advantages of high load carrying capacity, high earthquake resistance, low demodation, and widely adopted as the main support structure in my country's roads and railway construction. For both bridges, the actual working state of the pile foundation is carried out, and the assessment of the carrying situation after long-term operation is important, and one other side can provide technical support for the safe operation of both bridges. On the other hand, it can arrange a limited repair and reinforcement fee reasonably. [0003] Different from the easy-to-examination supervision, the cons...

AI Technical Summary

Problems solved by technology

However, the selection of dynamic and static contrast coefficients of pile foundations by this method depends on engineering experience for a long time, and cannot be directly used for rapid census evaluation

[0006] To sum up, the existing method of evaluating the vertical residual bearing capacity of pile foundations using the low-strain variable load method is limited by the difficulty in determining the value of the dynamic-static contrast coefficient, which may easily lead to inaccurate evaluation results of the vertical bearing capacity of pile foundations.

In addition, the bearing capacity evaluation method given in the existing industry norms has damage to the pile foundation structure

Images