Tire-gravel drainage pile composite foundation treatment method

Abstract

The invention discloses a tire-gravel drainage pile composite foundation treatment method. The method includes the following steps: step1, determining related parameters including reinforcing range of a foundation, pile body arranging mode, interval of tire-gravel piles, reinforcing depth of the foundation, pile diameter, filling quantity in pile holes and thickness of gravel cushion layers at the tops of sand gravel piles; step 2, according to the parameters acquired in step 1, performing construction, namely fixing sleeves at positions of a pile body arranged, beating the sleeves into soil at the preset design depth, arranging a tire in each sleeve, putting gravel into the inner side of each tire, and pulling out the sleeves to the set height, wherein the gravel in the sleeves is discharged into the soil by compressed air; vibrating while drawing the sleeves to the ground to form piles. The advantages that gravel piles are high in construction speed, conducive to accelerating of drainage and consolidation of foundation soil, low in manufacturing cost and the like, of the gravel piles in composite foundation treatment are combined.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a tire-gravel drainage pile composite foundation treatment method. Background technique [0002] The composite foundation of crushed stone piles and sand piles is a common treatment method for soft soil foundations. It can be used to strengthen sandy soil and silt foundations, increase the bearing capacity of the foundation, reduce settlement, prevent earthquake liquefaction, and increase Overall stability in large soft soils. However, the single pile bearing capacity of gravel piles and sand piles and the bearing capacity of composite foundations are low, and when the composite foundations of gravel piles and sand piles are damaged, most of the piles are destroyed first, and then the composite foundation is completely destroyed. The damage of the pile body is mostly expansion failure. This is because there is no cohesion between the aggregates of the gravel pile or sand pile, and ...

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Problems solved by technology

[0003] The large amount of deformation is also a defect of the bulk pile. In the bulk material pile composite foundation, because the ability of the pile itself to resist lateral deformation is very small, this type of composite foundation will produce radial deformation after being loaded vertically. , the soil around the pile can provide a certain radial constraint, which can provide a certain radial constraint for the gravel pile, but the soil around the pile itself has limited resistance to horizontal displacement, and the disturbance of the soil around the pile during construction will further weaken the soil Due to the radial restraint effect of the solid body, the deformation of loose material piles such as gravel piles or sand piles is larger than that of rigid piles.

[0004] In addition, with the rapid development of the automobile industry and the transportation industry, there are more and more waste tires, forming black garbage and causing black pollution.

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