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自平衡测桩法是一种新型的测桩法,近年来已广泛运用于工程实践。本文以某特大桥桩基的现场自平衡试验为依托,以现场测试数据为依据,同时建立有限元模型进行模拟分析。数值分析值与现场实测值的对比分析表明:模拟计算桩顶位移的发展趋势及结果与现场实测结果基本一致,上段桩位移的发展趋势与实测值一致,结果大于实测值。本文成果和结论可为同类试验和桩基理论研究提供参考。
Self-balancing pile measuring method is a new type of pile measuring method, which has been widely used in engineering practice in recent years. Based on the on-site self-balance test of pile foundation of a super-large bridge and on the basis of field test data, a finite element model was established to carry out simulation analysis. The comparative analysis between numerical analysis and field measurements shows that the trend and result of pile top displacement simulation are basically the same as the field test results. The development trend of displacement of upper pile is consistent with the measured value, and the result is larger than the measured value. The results and conclusions of this paper can provide reference for similar experiments and theoretical study of pile foundation.