Prestressed concrete pipe pile anti-corrosion connecting device and using method thereof

Abstract

The invention discloses a prestressed concrete pipe pile anti-corrosion connecting device and a using method thereof, and belongs to the field of traffic construction technical devices. The connectingdevice is used for up-down fixed butt joint of prestressed concrete pipe piles, and comprises a first end plate and a second end plate which are formed by steel materials, and further comprises a fastening sleeve, a plurality of fastening bolts and a heat shrinkable sleeve; and the upper portion and the lower portion of the fastening sleeve correspond to the first end plate and the second end plate, the first end plate and the second end plate are relatively fixed through the fastening bolts, zinc columns penetrating through the inner surfaces and the outer surfaces of first trapezoidal convex teeth are embedded in the first trapezoidal convex teeth, an extending part of a frustum-shaped structure is arranged on the peripheral side of the lower end of the second end plate, the frustum-shaped small-opening end of the extending part is flush with the lower end face of the second end plate, the large-opening end of the extending part extends to the middle of the second end plate in the vertical direction, and the projection of the fastening sleeve and the projection of the fastening bolts penetrating through the fastening sleeve in the vertical direction are located within the projection range. According to the scheme, the large opening end of the extending part exceeds the peripheral side of the fastening sleeve in the radial direction, the anti-corrosion fastening sleeve is reliable in implementation and good in anti-corrosion effect.

Description

technical field [0001] The invention relates to the technical field of traffic construction, in particular to an anti-corrosion connection device for prestressed concrete pipe piles and an application method thereof. Background technique [0002] Concrete pipe piles are important building materials used in the foundation construction of traffic construction projects. The quality and reliability of concrete pipe piles are related to the safety of surrounding roads, bridges and buildings. The safety and stability of the building, and as we all know, when the piling depth is deep, two or more sections of concrete pipe piles are required to connect. In the traditional scheme, the multi-section concrete pipe piles are mostly fixed by end plate welding The end plate is mostly a flat plate structure, which is fixed with the main reinforcement in the concrete pipe pile through the anchor hole of the main reinforcement and the counterbore, so that the end plate and the concrete pipe ...

AI Technical Summary

Problems solved by technology

[0002] Concrete pipe piles are important building materials used in the foundation construction of traffic construction projects. The quality and reliability of concrete pipe piles are related to the safety of surrounding roads, bridges and buildings. The safety and stability of the building, and as we all know, when the piling depth is deep, two or more sections of concrete pipe piles are required to connect. In the traditional scheme, the multi-section concrete pipe piles are mostly fixed by end plate welding The end plate is mostly a flat plate structure, which is fixed with the main reinforcement in the concrete pipe pile through the anchor hole of the main reinforcement and the counterbore, so that the end plate and the concrete pipe pile are tightly connected, and the concrete pipe pile in the upper and lower sections is fixed. After the end plates between the two sections are welded to each other, the fixed connection of the two sections of concrete pipe piles is realized. The limitation of this method is that the end plates of the flat structure are difficult to achieve the effect of auxiliary coaxial positioning, that is, the two sections of concrete pipe piles need to be coaxial Welding can only be carried out after alignment, and the end plate of the flat structure cannot be assisted in positioning, requiring a lot of manual effort for alignment. In addition, the welding stroke of the end plate welding is short, and after edge welding, there is still a certain degree of welding strength. Uncertainty, and after long-term use, the corrosion problem between the end plates is also worthy of attention, especially for some applicable scenarios of composite foundations, if the humidity in the foundation is high, its complex chemical composition may accelerate the end Corrosion of the plate, in the traditional scheme, asphalt or resin is used to cover the surface of the end plate to achieve the anti-corrosion effect. The gravel will scratch the surface of the end plate, so the area covered by asphalt or resin is also prone to cracking or other damage. Therefore, how to improve the connection reliability and corrosion resistance of concrete pipe pile joints is of practical importance. subject of meaning

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