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文章分析了采用现行规范设计路堤下粉喷桩复合地基时存在的不足,并通过现场实测及有限元计算,讨论了采用粉喷桩处理饱和黄土所形成的复合地基,在路堤荷载作用下,载荷板尺寸、基础刚度及复合地基中的桩体对复合地基承载力的影响。结果表明:载荷板尺寸对粉喷桩复合地基的承载力有很大的影响,综合考虑各因素后,建议载荷板大小取两桩复合时所对应的尺寸;减小基础刚度有利于桩间土体承载力的发挥;桩体的存在有利于桩间土体承载力的发挥。
In this paper, we analyze the shortcomings of using the existing codes to design DJM composite foundation under embankment. By means of field measurement and finite element calculation, the composite foundation formed by treating saturated loess with DJM pile is discussed. Under the action of embankment load, Plate Size, Foundation Stiffness and Effect of Piles on Bearing Capacity of Composite Foundation in Composite Foundation. The results show that the size of load plate has a great influence on the bearing capacity of DJM pile composite foundation. Considering all the factors, it is suggested that the size of load plate should be the size corresponding to the composite of two piles. Reducing the foundation stiffness is beneficial to the inter- The bearing capacity of the body to play; the existence of piles is conducive to the bearing capacity of soil between piles.