A prestressed concrete pipe pile anti-corrosion connection device and its application method

Abstract

The invention discloses a prestressed concrete pipe pile anti-corrosion connection device and its use method, which belong to the field of traffic construction technology devices and are used for the upper and lower fixed butt joint of prestressed concrete pipe piles, which include a first end plate and a second end plate formed of steel The two end plates also include a fastening sleeve, several fastening bolts and heat-shrinkable sleeves; the upper and lower parts of the fastening sleeve correspond to the first end plate and the second end plate and connect the first end plate and the second end plate through the fastening bolts. The end plate is relatively fixed; the first trapezoidal convex tooth is embedded with a zinc column that runs through its inner and outer surfaces; the outer peripheral side of the lower end of the second end plate is provided with an extension of a frustum-shaped structure, and the frustum-shaped small opening of the extension is connected to the second The lower end surface of the end plate is flat, and its large mouth end extends to the middle of the vertical direction of the second end plate, and the projection in the vertical direction of the fastening sleeve and the fastening bolt passing through the fastening sleeve is located within the projection range of the large mouth end of the extension , the large mouth end of the extension part radially exceeds the outer peripheral side of the fastening sleeve, the implementation of this scheme is reliable and the anti-corrosion effect is good.

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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