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为研究马鞍山长江大桥所在区域钻孔灌注桩的承载特性,采用自平衡测试法进行4根试桩静载荷试验。基于实测数据,对桩总承载力、桩侧摩阻力、桩端阻力以及承载力性能进行了分析。研究发现南岸锚碇区试桩桩侧摩阻力地勘报告值与实测值存在一定差异,但总体相符。试验研究成果直接用于该工程桩基设计,同时为类似桩基设计施工提供参考。
In order to study the bearing characteristics of cast-in-situ bored piles in the area where Maanshan Yangtze River Bridge is located, four static load tests of test piles were carried out by self-balance test method. Based on the measured data, the total pile capacity, pile side friction, pile end resistance and bearing capacity were analyzed. It is found that there is a certain difference between the reported values and the measured values of the lateral frictional resistance of the test pile in the South Coast Anchorage area, but they are generally consistent with each other. The results of the pilot study are directly used in the pile foundation design of the project and provide a reference for the design and construction of similar pile foundation.