Prestressed concrete pipe pile

Abstract

The invention discloses a pre-stressed concrete pipe pile with skillful design and improvement on bearing capacity, which is of a cylindrical shape and the middle part of the pipe pile is hollow. The pre-stressed concrete pipe pile comprises a pipe wall and has the difference that the outer circumferential surface of the pipe wall is designed in a gear shape, the gear-shaped structure is decided by increasing coefficient of the surface area of the pipe pile, a numeric value of the gear-shaped structure is selected between 0 and 100 percent, even higher; the pre-stressed concrete pipe pile has the advantages that circularity of the outer circumference of the pipe wall of the concrete pipe pile is designed in the gear shape under the condition of the same diameter, length and soil, thereby effectively improving the surface area K of the pipe pile, effectively improving the bearing capacity P of the pipe pile, and reserving basic attribute circularity of the pipe pile simultaneously so as to allow the structure of the pipe pile to be more scientific and more conform to mechanical principle; and the product can be widely applicable to the pile foundation engineering of various architectures.

Description

technical field [0001] The invention relates to a concrete pile used for a building foundation, in particular to a structural improvement of a prestressed concrete pipe pile, and belongs to the field of building materials. Background technique [0002] Most of the foundation engineering of high-rise buildings adopts driving or pressing prestressed concrete pipe piles, so as to improve the bearing capacity of the foundation and ensure the safety of the building. At present, the outer circumference of the concrete pipe pile on the market is circular, because its bearing capacity is determined by the friction between the surface area of ​​the pipe pile and the soil quality. If the friction force between the soil quality is small and cannot meet the bearing capacity requirements, only the extension pipe can be used. Only by increasing the length of the pile or increasing the number of pipe piles can the pipe pile reach the bearing capacity required by the design, which will inev...

AI Technical Summary

Problems solved by technology

At present, the outer circumference of the concrete pipe pile on the market is circular, because its bearing capacity is determined by the friction between the surface area of ​​the pipe pile and the soil quality. If the friction force between the soil quality is small and cannot meet the bearing capacity requirements, only the extension pipe can be used. Only by increasing the length of the pile or increasing the number of pipe piles can the pipe pile reach the bearing capacity required by the design, which will inevitably increase the cost and difficulty of the pile foundation project

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