自平衡法桩基承载力测试中一些问题的探讨

自平衡法作为一种新型的桩基承载力测试方法，具有测试荷载大、测试简便、结果可靠等多方面的突出优点。本文通过东北地区两个具体工程实例的介绍，阐述了其在大型桩基承载力测试中的应用，并对测试过程中存在的问题进行了分析。结合工程实际，对自平衡法桩身受力变形特征和极限承载力差异进行了对比分析，提出确定荷载箱平衡位置的合理方法。指出进一步加强对其作用机制、平衡点位置、试验结果转换等方面的研究是自平衡法不断完善的关键。

Study on self-balancing method in bearing capacity of pile test

As a new method for large pile bearing capacity test, the self-balancing method has several outstanding merits, such as great testing load capacity, simplicity and its creditability. This paper presents further application prosperity through introductions to two specific projects. At the same time, contrast analysis is presented based on deformation behavior and bearing capacity discrepancy of the pile, then we give the reasonable methods to settlement the balance position. Based on these studies, we can draw a conclusion that it is necessary to strengthen the study on action mechanism, balance position and data result transition of the self-balancing method for the pile test.