钉形水泥土双向搅拌桩在深厚软基加固中的应用

某高等级公路连云港段,地处苏北滨海平原,采用钉形水泥土双向搅拌桩加固深厚软基,使其承载能力和工后沉降达到一级公路的标准。通过对钉形水泥土双向搅拌桩的水平位移、沉降监测数据及其处治软基效果进行分析,结果表明:其承载力为124 k Pa,工后沉降为8 cm,满足设计及规范要求,处治效果较好。

Application of T-shaped Bidirectional Soil Cement Mixing Pile in Reinforcement of Deep Soft Foundation

The Lianyungang Section of a high-class highway locates in the northern Jiangsu coastal plain, where T-shaped bidirectional soil cement mixing piles were used to reinforce the deep soft foundation, and make the bearing capacity and post-construction settlement thereof reach the criteria for the first-class highway; and then the horizontal displacement and settlement observations of these piles, and the soft foundation control effect therewith, were analyzed. The result shows that the bearing capacity is 124 kPa and the post-construction settlement is 8 cm, both of which meet the requirements in the design and specification, and bring about good effect of treatment.