分析了刚性承台下群桩桩数、桩长、桩间距和桩土模量比等群桩工作特性的影响。
The influences of number of piles, the pile length, the space between piles, and the pile-soil relative stiffness factor on the characteristic of pile groups were analyzed in a systematic way.
目前已有的复合桩基设计理论中，对桩数的确定尚未形成一种统一有效的方法，有的设计人员在设计时仍按承载力控制来确定。
At present, the existent design theories of composite pile foundation didn't forma valid method to confirm the number of piles still.
大直径超长桩的出现给海上的打桩施工增加了难度和复杂性，也使得打桩分析和预估锤击数具有重要的意义。
Since deep penetration large diameter steel pipe piles have been widely used in platform foundation, pile drivability analysis and blow count prediction play an important role in pipe driving.
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