120 000 kN钻孔灌注桩静载荷试验

Static load test of bored pile with 12 000 kN bearing capacity

采用自平衡试桩法对润扬长江公路大桥南塔 12 0 0 0 0kN(桩径 2 8m)特大吨位钻孔灌注桩进行了静载荷试验 ,同时进行了 2根 1 2m模拟桩静载荷试验。根据现场试桩资料 ,分析了桩的荷载传递机理 ,将试验结果转化为传统堆载试验曲线 。

A static load test was performed to the 120 000 kN extra large bored pile ( with a diameter of 2 8 m) with self\|balanced test method at southern tower of Runyang Yangtze River Highway Bridge. At the same time, a simulation static load test was performed to two 1 2 m diameter piles. The load transmission mechanism was analyzed based on data of site test pile, and test results were converted into conventional heaped load test curve. The converted test results of the prototype pile and the simulation pile are identical.