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本文在对水泥土桩成桩过程分析的基础上,提出了成桩扰动引起的桩周土体中孔隙水压力的计算公式。文中依据解析理论对水泥土桩固结过程进行了分析,工程实例的计算与实测资料对比表明:桩周土的固结是引起水泥土桩复合地基沉降的重要因素,在水泥土桩复合地基的承载力和沉降计算中应考虑时间效应。
In this paper, based on the analysis of cement-soil pile forming process, the calculation formula of the pore water pressure in the soil around the pile caused by the pile-disturbing disturbance is proposed. In this paper, the consolidation process of cement-soil piles is analyzed based on the analytical theory. Comparing the calculated and measured data of the engineering example, the consolidation of the soil around the pile is an important factor causing the settlement of the cement-soil pile composite foundation. The time effect should be considered in the calculation of the bearing capacity and settlement.