A wedge-type pile head and pile-forming construction method for pile side bearing capacity

Abstract

The invention discloses a wedge-type pile head bearing load on the side of the pile and a pile-forming construction method. The diameter of the top surface of the conical cavity is greater than the diameter of the bottom surface; a cylindrical inner wedge is wedged from top to bottom between the pipe pile head and the tapered outer sleeve, and the inner wall of the cylindrical inner wedge is connected to the pile The smooth walls on the sides are fitted together, and the inner side wall of the tapered outer sleeve is in serrated engagement with the outer side wall of the cylindrical inner wedge; the upper surface of the tapered outer sleeve is connected to the bowl-shaped striking plate to form the upper hammering steel pile cap , or connect the bowl-shaped steel hoop to form a flexible pile cap, and the top surface of the cylindrical inner wedge protrudes from the top surface of the pipe pile head. The invention utilizes the cylindrical inner wedge and the tapered outer sleeve of the top surface to decompose the force to the side of the pile, effectively protecting the pile end of the prefabricated pipe pile from damage during construction, and solving the problem of the pile body and the pile. The problem of uncoordinated deformation of the inter-soil part can be solved, and the bearing capacity and stability of the composite foundation can be improved.

Description

technical field [0001] The invention relates to the field of building composite foundations, in particular to a hammering steel pile cap, a connection structure between a flexible pile cap and a prefabricated pile and a construction method thereof. Background technique [0002] my country has a vast territory, criss-cross rivers, complex and changeable geological conditions, especially in the coastal and riverside areas where soft soil and other unfavorable geology are widely distributed. With the rapid development of my country's economy, prefabricated pipe pile technology is widely used in various types of soft soil composite foundation treatment Under construction. The specific construction methods mainly include hammering pile sinking and static pressure pile sinking. Among them, the hammering method uses the impact force of the hammer to overcome the resistance of the soil to the pile, so that the pile sinks to the design depth or reaches the bearing layer. The construc...

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Problems solved by technology

[0004] In order to avoid the shortcomings of the above-mentioned prior art, the present invention provides a pile-side load-bearing wedge-type pile head and a pile-forming method, which disperses and transmits the external load to the pile head and pile side, thereby protecting the prefabricated pipe pile. Pile end, solve the problem of uncoordinated deformation between the pile body and the soil between the piles, reduce the scrap rate of prefabricated pipe piles, and improve the bearing capacity and stability of the composite foundation

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