混凝土扩盘桩盘下土层厚度影响抗压破坏的试验研究

Experimental study about the soil thickness at the bottom of the plate to affect the failure of resisting compression of the CEP pile

在挤扩多盘桩现有的研究方法和结论的基础下,提出了半面桩小模型原状土试验的方法,进行了盘下土层厚度对混凝土扩盘桩桩周土体的破坏状态以及单桩承载力的研究,既解决了原有全截面桩不能清晰地看到桩周土体的整个破坏情况的缺点,又解决了埋土试验不能保证土体性状符合施工现场实际状况的缺欠。

On the base of existing research method and conclusions of the CEP pile,it is puts forward that the method of small model pile with self-section test model test of undisturbed soil,and studies that the thickness of soil layer at bottom of plate affecting the bearing capacity and failure behavior of the CEP pile under vertical compression,and not only the whole failure behavior of soil surroundings the pile can be observed more clearly,but also the question is resolved that ensures that the soil in the test is complying with the actual situation of site. It also contributes to the promotion of the technology.