高速铁路桥梁桩基极限承载力预测研究

利用高速铁路桥梁单桩竖向静载试验数据，应用灰色理论建立GM(1,1)模型，在此基础上编制预测程序FPS预测桩基极限承载力。对比分析实测值和预测值，二者吻合较好，验证了GM(1,1)模型进行桩基极限承载力预测有较好的精度和实用性。GM(1,1)模型可作为预测高速铁路桥梁桩基极限承载力的可行方法。

Prediction Study on Ultimate Bearing Capacity of Bridge Pile Foundation in High-speed Railway

Based on vertical static load test data of bridge single pile in high speed railway,this paper establishesGM（1,1） model with gray theory and formulates prediction program FPS to predict pile foundation ultimate bearing capacity.Through comparison of measured value and predicted value,it is found that they are consistent,which verifies GM（1,1） model has higher precision and practicability in prediction of pile foundation ultimate bearing capacity.GM（1,1） model may be feasible in prediction of ultimate bearing capacity of high speed railway bridge pile foundation.