沉桩挤土深层压缩沉降值测定模型试验

摘要

通过设计并制作压桩挤土模型试验槽,模拟饱和粉质粘土中静力压桩施工,测定沉桩前和成桩后桩尖平面以下土体沉降位移值的时空变化规律,并进一步分析实际工程中刚性桩打入地基对工程场地或地基深部土层工程性质的影响,以指导基础工程设计和施工。%Through designing and making pressed piles soil compaction model experimental trough,construction of static pressed piles in silty clay is simulated and pile sinking process and pile tip soil settlement are surveyed displacement values of soil below the tip and space-time variation rule,and further analyses practical engineering rigid pile throwing into the ground on the site or the depth of foundation soil factors influencing the engineering properties,in order to guide the basic engineering design and construction.