Accuracy of Settlement Prediction of Composite Foundation by Centrifuge Model Tests

To quantitatively assess the prediction ability of geotechnical centrifuge model test for composite foundation, centrifugal model tests were carried out on two kinds of composite foundation. Through the comparison of experimental and field filling results, the factors affecting the prediction accuracy, including the type of composite foundation, test method, soil types and others, were analyzed. The results show that: the prediction accuracy of the similar grading method model is low, and the prediction accuracy of the similar mechanical parameters method can improve the prediction accuracy effectively. Furthermore, the prediction accuracy is influenced by soil characteristics and reinforcing methods.