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Integrity Evaluation of Pile Based on Grey Clustering Theory

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DOI: 10.23977/jceup.2022.040106 | Downloads: 15 | Views: 201


Yanchun Zhang 1, Xingbo Zhang 1, Hao Gu 1, Wei Chang 1, Minghao Lou 1


1 College of Civil Engineering, Jilin Jianzhu University Changchun 130118, China

Corresponding Author

Xingbo Zhang


The pile integrity, which is used as a comprehensive index to reflect the relative change of pile section size, and the compactness and continuity of pile material, has a great influence on the bearing capacity of the pile foundation, therefore, it is necessary to test and evaluate the pile integrity. In this paper, based on the basic principle and the measured data of sonic pile measurement, the sound time, sound velocity, amplitude and main frequency are determined as the evaluation factors, while the grey clustering theory is used to construct the model to evaluate the integrity of pile foundation and determine the weight of each evaluation factor, thus analyzing and evaluating the integrity of large diameter pile. After the comparison with the field measured ultrasonic testing data and the fuzzy mathematics evaluation method, it is found that this method with simple calculation method has better feasibility and applicability. Compared with the traditional evaluation method, it can overcome the shortcomings of the single index evaluation in the traditional evaluation method. With the certain objectivity, it has better reliability for judging whether the pile body has defects.


Grey clustering theory, Sound wave testing, Integrity evaluation, Large diameter pile


Yanchun Zhang, Xingbo Zhang, Hao Gu, Wei Chang, Minghao Lou, Integrity Evaluation of Pile Based on Grey Clustering Theory. Journal of Civil Engineering and Urban Planning (2022) Vol. 4: 43-51. DOI:


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