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在竖直或水平力作用下,在相同的填料中,有典型问距的群桩的总刚度通常小于各单桩分离时的刚度之和。这种现象是由桩—土一桩的相互作用产生的。用少量的间接帽盖模型钢群桩作的动力试验得出的资料可以考察间距和位移幅度对群桩动力性状的影响。结果发现:间距的影响是主要的。在实际的限制条件之外没有相互作用。坯观察到非线性反应并作了说明。
Under the action of vertical or horizontal forces, the total stiffness of a typical pile group in the same packing is usually less than the sum of the stiffnesses of the individual piles when they are separated. This phenomenon is caused by the interaction of pile-soil piles. The data obtained from the dynamic test of a small number of indirect cap model steel piles can examine the influence of the distance and displacement amplitude on the dynamic characteristics of the group. As a result, it was found that the effect of the spacing was the main one. There is no interaction outside the actual constraints. The non-linear reaction was observed in the blank and explained.