Pre-stressed concrete compression pipe pile tension connector without end plate and pipe pile

Abstract

The invention discloses a pre-stressed concrete compression pipe pile tension connector without an end plate. The pre-stressed concrete compression pipe pile tension connector without an end plate comprises an expansion shell, a first sealing cover, an expansion connecting pin and a wedge-shaped part, wherein a through groove penetrating through both ends is formed in the expansion shell, the through groove comprises an extending section and a clamping section, the inner diameter of the clamping section is larger than that of the extending section, a first sleeve is arranged at the end, corresponding to the extending section, of the expansion shell, and an inner thread is arranged on the first sleeve; the first sealing cover is fixed to the end, corresponding to the clamping section, outside the expansion shell, and a first through hole is formed in the first sealing cover; the expansion connecting pin comprises a connecting section and an expansion section, an expansion groove is formed in the expansion section, the expansion groove extends axially from the end part of the expansion part to the connecting section, the expansion section is divided into at least two parts through the expansion groove, and the expansion section extends into the expansion shell; and the wedge-shaped part comprises a head part and a tail part, the outer surface of the wedge-shaped part is graduallyclosed inward from the head part to the tail part, and the wedge-shaped part extends into the expansion section along the expansion groove from the tail part to expand the expansion section. According to the pre-stressed concrete compression pipe pile tension connector without the end plate, materials are saved, the structure is simple, but connection is more reliable, and use is more convenient.

Description

technical field [0001] The invention belongs to the field of construction engineering foundation pile foundations, and more specifically relates to a prestressed concrete non-end-plate compression pipe pile expansion and tension connector. Background technique [0002] In pile foundation projects such as underground engineering, high-rise buildings, offshore wharf platforms, cable-stayed bridges, suspension bridges, large dock floors, and static load test piles, the ground needs to be reinforced in order to balance the buoyancy of the groundwater. The main measures adopted are in the ground. Pipe piles are buried in the ground, and the ground is reinforced by the tension of the pile foundation and the concrete grouting body integrated with the pipe piles, so that the ground forms an integral structure, so as to achieve the purpose of controlling its deformation. [0003] The uplift pile occupies an important position in the whole pipe pile system and is widely used because o...

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Problems solved by technology

[0006] Although the above-mentioned structure using mechanical meshing connection construction can save time for connecting pipe piles on site, it still has the following disadvantages: 1. The cost of the connection box is relatively high, and the manufacturing process is relatively complicated; 2. The position of the positioning plate with teeth in the connection box Fixing (vertical direction) is more difficult; 3. The structure of the end plates at both ends of the pipe pile is different, and it must be distinguished before hoisting during connection, which is troublesome; 4. The size of the connection formed between the two positioning plates with teeth is small , the connecting pins must be aligned in all directions before they can be inserted smoothly, and all the connecting pins must be aligned with all the connecting ports one by one at the same time, otherwise there will be a stuck phenomenon, which will damage the connecting pins and the positioning plate with teeth , but it is difficult to align the two quickly and accurately after the entire pipe pile is lifted vertically, and it takes a long time

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