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浙江乐清湾大桥桩基具有承载力高、大直径、桩位处海水中等的特点,对该项目中5根灌注桩采用自平衡法进行桩基检测,结合工程实际,采用简化等效转换法和精确转换法对比分析确定单桩极限承载力。试验结果表明,简化等效转换法满足工程要求,进一步统计分析不同桩侧土的转换系数K的合理取值。该检测方法不受场地条件的限制,而且结果可以满足工程上的需要,为以后施工和设计提供了参考依据。
The pile foundation of Yueqing Bay Bridge in Zhejiang Province has the features of high bearing capacity, large diameter and moderate seawater in pile position. Five pile foundations in this project adopt self-balance method to carry out pile foundation inspection. Combined with engineering practice, simplified equivalent conversion method and Accurate Transformation Method to Determine the Ultimate Bearing Capacity of Single Pile. The experimental results show that the simplified equivalent conversion method meets the engineering requirements and further statistically analyzes the reasonable value of the conversion coefficient K of different side soil. The test method is not limited by the site conditions, and the results can meet the engineering needs, providing a reference for future construction and design.