Compound mattress layer structure of CFG stake

The utility model discloses a compound mattress layer structure of CFG stake, including the first mattress layer of setting on the pile body upper strata, geogrid layer, mortar layer and reinforced concrete layer, compound mattress layer structure has the multilayer, and the superiors set up the reinforced concrete basis, granule variation in size filler aggregates are adopted on different mattress layers, improve the wholeness on mattress layer simultaneously through geogrid, the layer comprehensive function of multilayer mattress, better performance pile body and soil between piles's commonbearing capacity. 本实用新型公开了种CFG桩复合褥垫层结构，包括设置在桩体上层的第褥垫层，土工格栅层，砂浆层和钢筋混凝土层，复合褥垫层结构具有多层，最上层设置钢筋混凝土基础;不同褥垫层采用颗粒大小不同填充骨料，同时通过土工格栅提高褥垫层的整体性，多层褥垫层综合作用，更好的发挥了桩体和桩间土的共同承载能力。