Based on taking diffusing zone into account, bearing capacity formula of composite foundation is amended to adapt grouting pile composite foundation, which is validated by practice project.

在考虑浆液扩散区的基础上，修正了承载力公式，并用工程实例进行了验证。

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According to the laser speckle movement formula, the statistical correlation relates to the displacement or rotation of the diffusing point in real time.

根据激光散斑运动规律，这个相关统计特性实时地反映该点的位移或转角的时间历程。

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