Precast concrete pipe pile core hole sealing device

Abstract

The invention provides a precast concrete pipe pile core hole sealing device which comprises a top plate, a penetrating hole is formed in the top plate, a bottom plate is arranged below the top plate, a connecting piece penetrating through the penetrating hole is connected to the bottom plate, a blocking piece is arranged between the top plate and the bottom plate and arranged on the outer side of the connecting piece in a sleeving mode, and an elastic ring is arranged on the outer side of the blocking piece in a sleeving mode. And an extrusion part located above the top plate is arranged on the connecting part, and the extrusion part is used for enabling the top plate to move downwards to shorten the distance between the top plate and the bottom plate so as to extrude the elastic ring to enable the elastic ring to deform and move outwards, and when hole sealing needs to be carried out on the pipe pile core in the pipe pile body, the hole sealing device is placed in the pipe pile core to be subjected to hole sealing; the extrusion part is controlled to be used for extruding the top plate to move downwards to shorten the distance between the top plate and the bottom plate, then the elastic ring is extruded to deform and move outwards, the elastic ring deforms after being pressed, the inner wall of the pipe pile core is extruded, the larger the pressure is, the larger the deformation is, and finally hole sealing treatment of the pipe pile core is achieved.

Description

technical field [0001] One or more embodiments of this specification relate to the technical field of pipe pile core sealing, in particular to a prefabricated concrete pipe pile core sealing device. Background technique [0002] With the development of economic construction, pretensioned prestressed concrete pipe piles began to be widely used in railway systems, and expanded to industrial and civil buildings, municipal, metallurgy, ports, highways and other fields. In the Yangtze River Delta and Pearl River Delta regions, due to the geological conditions suitable for the use of pipe piles, the demand for pipe piles has soared, thus rapidly forming a new industry. According to incomplete statistics, at present, the annual output of various pipe piles in the country exceeds 300 million meters, becoming a vibrant emerging industry, and pipe piles account for about 50% of the output value of the national cement products industry. [0003] Pipe piles are divided into pre-tension...

AI Technical Summary

Problems solved by technology

However, because the pile core is a hollow tubular structure, after surface water or groundwater enters the pipe pile, it is easy to flow into the rock formation at the pile end, especially when the mudstone meets water, the lithology becomes soft, the strength decreases, and the bearing capacity decreases

At present, the traditional solution is mainly to carry out the bottom sealing treatment of the pile core, such as pouring the bottom sealing concrete of the pile core hole, wearing steel pile tips, etc. The disadvantages of the traditional method are: (1) The pouring of the bottom sealing concrete of the pile core hole is easy to segregate, not compact, and cannot To achieve the purpose of back cover; (2) The steel pile tip has poor corrosion resistance and consumes steel resources

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