A pile-connecting structure using phc pipe piles and an anchoring structure for caps

Abstract

The invention relates to the field of prestressed high-strength concrete pipe pile structures of civil engineering pile foundations, in particular to a pile connection structure and cap anchorage structure using PHC pipe piles. A number of steel sleeves are arranged on the lower end surface of the end plate, and connecting pipes are arranged between the lower parts of adjacent steel sleeves. There is a through hole that allows the prestressed steel rod to penetrate, and the end of the prestressed steel rod that penetrates the steel sleeve is matched with the bottom surface of the steel sleeve, and a grouting hole is distributed radially inside the end plate and A pulp hole. The invention can be used not only for the anti-pull connection of the PHC pipe pile body, but also for the reliable connection between the PHC pipe pile and the cap, and can adapt to the prefabricated and assembled construction rhythm of the cap. It overcomes the shortcomings of end plate welding connection and mechanical connection, and has low requirements for pile connection operation accuracy, which is suitable for complex engineering situations and the effect is guaranteed.

Description

technical field [0001] The invention relates to the field of prestressed high-strength concrete pipe pile structures of civil engineering pile foundations, in particular to a pile connection structure and cap anchorage structure using PHC pipe piles. Background technique [0002] Prestressed high-strength concrete pipe piles (PHC pipe piles) have the characteristics of good pile body quality, high vertical bearing capacity of a single pile, strong adaptability to engineering geological conditions, and fast construction speed. Since the 1990s, it has been widely used in construction, highway, railway, port and other projects in our country. Due to reasons such as production, transportation and construction, the pile length of prestressed high-strength concrete pipe piles often cannot meet the design requirements at one time, and the piles must be connected on site during pile driving, which involves the problem of pipe pile joints. At the same time, under the uplift load-bea...

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Problems solved by technology

[0005] In order to solve many problems existing in the connection method of the existing PHC pipe pile body, the present invention provides a sleeve end plate and a PHC pipe pile for realizing grouting connection

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