贵阳北二环道路偏坡大桥多个桥墩基础置于地质断裂带上,桩基承载力能否满足设计要求是大桥结构安全的关键,选用工程桩作为试桩,采用自平衡法对挖孔灌注桩承载力进行测试,测得单桩极限承载力、桩周极限摩阻力和桩端承载力,为大桥安全运营提供依据。 Guiyang North Second Ring Road, the slope of the bridge over a number of piers placed in the geological fault zone, whether the bearing capacity of pile foundation to meet the design requirements is the key to structural safety of the bridge, the selection of engineering piles as test piles, self-balancing method for digging hole perfusion Pile bearing capacity of the test, the measured single pile ultimate bearing capacity, pile ultimate friction and pile bearing capacity, provide the basis for the safe operation of the bridge.