特大吨位桥桩承载力试验研究

采用自平衡试桩法对润扬长江公路在桥特大吨位大直径基桩进行了足尺模型竖向载力试验，同时在同一场进行了2极小直径模拟桩试验，将自平衡试桩结果转换成等效传统静载试桩曲线并进行分析研究，对模拟试桩效果进行了有意义的探索，介绍了自平衡试桩法的双荷载箱技术在世业洲高架桥大吨位基桩中的应用。

Study on Bearing Capacity Test of Extra Large Tonnage Piles

A new static load testing method, the self balanced testing method, is adopted for large tonnage piles of Runyang Yangtze River Highway Bridge. At the same time, two small piles are tested for estimating the bearing capacity of extra large tonnage piles. The results of self balanced method are converted to the equivalent curves of static load test piles and the effect of large piles estimated by small piles is discussed. The application of two load cell technique to the large tonnage piles of Shiyezhou Viaduct is introduced finally.