柔性荷载作用下水泥土桩复合地基的承载力与沉降特性的研究

Study on Bearing Capacity and Settlement of Cement-soil Piles under Flexible Load

在分析现场沉降观测结果和有限元计算结果的基础上，对柔性荷载作用下水泥土桩 复合地基的承载力和沉降特性进行了分析研究，得出桩土应力比随时间、荷载性质、面积 置换率等因素变化的规律，以及沉降随时间荷载变化的特性，并分析了桩顶处存在的刺入 变形和土拱效应对复合地基承载力的影响．

On the basis of analyzing the settlement surveying result on field and FEA analysis result, study has been done about the bearing capacity and settlement of cement-soil piles composite foundation under the action of flexible load. Regularity is discovered that pile-soil stress ratio varieties with time, load nature, area displacement ratio and so on, as well as settlement with time and load. Meanwhile, it is analyzed that penetrating deformation and earth-arc effect on pile top have influence on the bearing capacity of composite foundation.