By using the variation dynamic admittance algorithm of the load power, the ill-conditional number problem of the node admittance matrix is solved.

利用负荷功率变动态导纳算法解决了节点导纳矩阵病态问题。

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The conventional dynamic tests of composite foundation were reviewed and the velocity or (mechanical) admittance method for a block on single-piled composite foundation was recommended.

简要分析了当前复合地基动测技术的不足，提出了用单桩复合地基上块体的竖向振动速度导纳曲线检测桩—土体系工程性状的机械导纳法。

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