润扬大桥大吨位桩承载力自平衡法试桩研究

Self-balanced capacity test of large cast-in-place pile at Runyang Major Bridge

润扬大桥塔墩基础为大直径钻孔灌注桩,桥位地质复杂,桩基承载力大。结合润扬大桥工程实践,阐述桩承载力自平衡试验方法原理,分析自平衡试桩方法的特点及适应条件,介绍自平衡测试方法试桩情况。

Large-diameter cast-in-place bored pile was used as the foundation of Runyang Major Bridge, which is characterized by the complex geological condition as well as the large bearing capacity of piles. The authors describe the principle, method, characteristics and applicable conditions of self-balanced capacity test of pile, and present the application of this test technology to the construction of Runyang Major Bridge.