Soft foundation efficient treatment method for gas lift combined discrete material pile composite foundation: Fid-Bau Portal

Soft foundation efficient treatment method for gas lift combined discrete material pile composite foundation

QUAN YIDE / LIN XINBEI / YAO KANG / SHI LI

The invention discloses a soft foundation efficient treatment method for a gas lift combined discrete material pile composite foundation, which comprises the following steps of: 1) laying a sand cushion layer to form a discrete material pile construction working surface; 2) preparing a vertical floral tube; (3) holes are formed in foundation soil in advance; (4) connecting a gas lift joint with a pneumatic pipe beside the floral pipe, connecting a top drainage pipe interface with a drainage pipeline, connecting a pneumatic pipe interface with the pneumatic pipe, lowering into a drill hole, and starting to fill; (5) tamping is carried out, and the whole pile is completed after reaching the surface of the soil layer; (6) the steps 3-5 are repeated, and driving of the discrete material pile is completed; 7) connecting the pneumatic pipes to form an air injection pipeline, connecting the air injection pipeline with an air compressor, connecting the drainage pipes to form a drainage pipeline, and leading to a water collection area; according to the method, the requirements for equipment and a soil body to be treated are low, operation is easy and feasible, efficient consolidation of the soft soil foundation can be achieved, and the method can be applied to large-area soft soil foundation treatment engineering.

本发明公开了一种气举联合散体材料桩复合地基的软基高效处理方法，包括：步骤1）铺设砂垫层，形成散体材料桩施工作业面；步骤2）制备竖向花管；步骤3）在地基土中预先成孔；步骤4）通过气举接头与花管旁气动管相连，顶部排水管接口与排水管道相连，气动管接口与气动管相连，下放至钻孔中，开始填料；步骤5）夯实，待到达土层表面，整根桩完成；步骤6）重复步骤3~5，完成散体材料桩的打设；步骤7）将气动管连接成注气管路，并与空气压缩机相连，排水管连接成排水管路，并通往集水区；步骤8）周期性打开空气压缩机进行气举。本发明对设备和待处理土体的要求低，操作简易可行，能实现软土地基的高效固结，可应用于大面积软土地基处理工程中。

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