In essence there are three indexes: static load strength of a single grain, dynamic load strength of a single grain and dynamic load strength of a group of grains.

从本质上看，目前存在着单体静载强度、单体动载强度、群体动载强度三个指标。

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Meanwhile the load transfer laws and the deforming characteristics of single pile composite foundation and group piles composite foundation are researched.

同时，分析单桩复合地基、群桩复合地基荷载传递规律及变形特性的差异，群桩复合地基中内桩、边桩荷载传递规律的差异问题。

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Meanwhile the load transfer laws and the deforming characteristics of single pile composite foundation and group piles composite foundation are researched.

同时，分析单桩复合地基、群桩复合地基荷载传递规律及变形特性的差异，群桩复合地基中内桩、边桩荷载传递规律的差异问题。

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