clustered piles meaning in English

椿群
簇桩
群桩

Landslide resistance mechanism and application of deeply buried and stage variation cluster piles
深埋式变阶群桩抗滑机理与应用研究
Some conclusions relating to the displacement group effect are obtained from simulating the influence of several factors . the results prove that the model can consider both the effect of clusters piles and the ratio of loading share of each pile
通过大量的模型计算，讨论了桩距、桩数、桩径和桩长对群桩效应的影响，还研究了群桩中各桩受力的不均性，得出了一些有益的结论。