本文介绍几种研究在松砂中不同形状、桩组和桩距群桩上拉力变化的新近实验室模型试验结果。在试验中桩长与桩径之比不变,同时对其他因素如土类和密实度在这次研究中未予考虑。 In this paper, we present the results of several recent laboratory tests on the variation of the tensile forces of pile groups with different shapes, pile groups and pile groups in loose sand. The ratio of pile length to pile diameter did not change during the test, while other factors such as soil type and compaction were not considered in this study.