Internal expansion type steel pipe pile for extra-long steel trestle in complex sea area environment

Abstract

The invention relates to an internal expansion type steel pipe pile for an extra-long steel trestle in a complex sea area environment. The internal expansion type steel pipe pile for the extra-long steel trestle in the complex sea area environment comprises a steel pipe pile body, eight shells, a hollow circular block, a driving mechanism and a clamping mechanism; the eight shells are fixedly connected to the outer wall of the steel pipe pile body at intervals; the clamping mechanism is installed in the shells; and the hollow circular block is placed in the steel pipe pile body in a sliding mode. The steel pipe pile is buried in soil, concrete can be poured into the steel pipe pile, the concrete drives the hollow circular block to move downwards, the hollow circular block moves downwards to drive the driving mechanism to operate, the driving mechanism operates to drive the clamping mechanism to swing outwards, the clamping mechanism swings outwards into the soil, and the clamping mechanism is matched with the soil to stably fix the steel pipe pile. In this way, the situation that the pouring of the concrete is affected by the shaking phenomenon of the steel pipe pile can be avoided, and the stability of the steel pipe pile is not affected.

Description

technical field [0001] The invention relates to a steel pipe pile, in particular to an internally expanded steel pipe pile for extra-long steel trestle bridges in complex sea environment. Background technique [0002] During the construction of the extra-long steel trestle bridge, in order to make the extra-long steel trestle more stable and avoid major dangerous accidents caused by collapse, it is necessary to embed steel pipe piles in the soil to provide support. At present, most of them directly use steel pipe piles The pipe piles are buried in the soil, and then continue to be poured into the concrete. Due to the large hole dug first, the steel pipe piles are prone to shake after being buried, affecting the pouring of the concrete, and indirectly affecting the stability of the steel pipe piles. [0003] Therefore, it is necessary to design and develop an internally expanded steel pipe pile for extra-long steel trestle bridges in a complex sea environment that can more fi...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcoming that due to the large hole dug first, the steel pipe piles are prone to shake after being buried, which affects the pouring of concrete and indirectly affects the stability of the steel pipe piles. The technical problem is to provide a steel pipe pile that can The pipe pile is more firmly fixed in the soil, and does not affect the pouring of concrete in the complex sea environment. The internally expanded steel pipe pile for the extra-long steel trestle bridge

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