水泥土桩复合地基承载力的试验研究

Test Research of Bearing Capacity of Cement-soil Piles Composite Foundation

常用的水泥土桩复合地基承载力的影响因素有工程地质条件、水泥土桩和褥垫层三个方面。用处理后地基承载力的增加参数σ对地基处理提高承载力的程度进行分析评价,从而估算出经济桩长。对复合地基承载力的取值标准进行了分析,分析表明采用相对变形值和变形值变化率确定承载力取值更符合复合地基的情况。

Characteristics of each layer soil along the pile , cementsoil pile and mattress layer are the influence factors of bearing capacity of common cementsoil composite foundation. The degree of bearing capacity enhancing of treated ground is evaluated by amplified factor σ, the economic pile length is calculated. Value adopting standard of composite foundation bearing capacity is analyzed in this paper. The analysis result shows that bearing capacity of composite foundation determined by relatively deformation and change rate of deformation is more suitable for composite foundation.