Concreted filled steel tube composite pile and manufacturing device and method thereof

Abstract

The invention relates to a concreted filled steel tube composite pile and a manufacturing device and method thereof. The concreted filled steel tube composite pile comprises a steel tube, a reinforcing tube, a connection unit and concrete, wherein the steel tube is longer in the vertical direction and is internally vertically through; a hollow hole is formed in the reinforcing tube; the reinforcing tube is arranged inside the steel tube; the connection unit comprises a single board arranged on the lower portion of the steel tube and a lateral board upward from the periphery of the single board and can be connected with other piles; the concrete is poured into the space formed by the inner surface of the steel tube, the outer surface of the reinforcing tube and the inner surface of the connection unit; the lower end of the reinforcing tube is fixed to the single board; an open hole is formed in the position, corresponding to the reinforcing tube, of the single board, so that the open hole and the hollow hole of the reinforcing tube are communicated. The connector portion of the composite pile is stable in structure, the bending resistance is greatly enhanced, the structure is simple, manufacturing is easy, and therefore the manufacturing expense is reduced.

Description

technical field [0001] The present invention relates to a composite pile used for strengthening the foundation of civil structures and buildings, its manufacturing device and manufacturing method, and more specifically, to a composite pile whose interior of a steel pipe is filled with concrete, its manufacturing device and manufacturing method. Production method. Background technique [0002] In general, in order to install a predetermined ground structure above the foundation, it is necessary to secure a sufficient supporting force of the ground for the load of the ground structure. Furthermore, a foundation that does not secure a sufficient supporting force in accordance with foundation conditions or load conditions of ground structures is called a weak foundation. [0003] For weak foundations, countermeasures for the safety and settlement of ground structures should be prepared before ground structures are set up. The most commonly used method of such preventive measur...

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Problems solved by technology

[0015] However, the upper pile of such a conventional composite pile is composed of only steel pipe piles, so there is a problem that the thickness of the steel pipe needs to be designed thicker in order to cope with horizontal forces such as earthquake force.

[0016] In addition, although the stress concentration generated in the process of transmitting the stress applied to the steel pipe pile to the concrete pile is dispersed by arranging a reinforcing plate, there is a possibility that stress concentration may occur at the joint part due to insufficient dispersion. concern

[0017] In addition, there is a problem that the manufacturing cost of the connection port is increased because additional ribs are required for stress distribution.

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