扁铲侧胀试验计算地基承载力的方法及对比分析

摘要

针对扁铲侧胀试验计算地基承载力的问题,进行多种常用方法的分析,并对扁铲侧胀试验进行介绍.结合港珠澳大桥珠澳人工岛勘察工程,对扁铲侧胀试验数据与静力触探试验参数进行相关性分析和统计回归,推导出用扁铲侧胀试验计算地基承载力的经验公式.对其结果与其他方法计算的地基承载力进行对比分析,表明采用扁铲侧胀试验计算地基承载力是可行的,但应该用地区性经验加以检验和修正.%For the problem of calculating the bearing capacity of foundation soil by the flat dilatometer test(DMT),a variety of common method and briefly introducing DMT are analyzed.Combined with engineering investigation on the Zhuhai-Macau artificial island of the Hong Kong-Zhuhai-Macao Bridge,with correlation analysis and statistics and regression of DMT data with parameters of static cone penetration test,the empirical formula for calculating the bearing capacity of the foundation using DMT is derived.The results compared with other methods to calculate the foundation bearing capacity,show that the flat dilatometer test(DMT)foundation bearing capacity is feasible,and the results should be examined and corrected with regional experience.