A prestressed concrete pipe pile with high load bearing and pullout resistance

Abstract

The invention discloses a prestressed concrete pipe pile, in particular a prestressed concrete pipe pile with high bearing capacity and pullout resistance. The high-pressure grouting channel and the mud discharge channel penetrated by the high-pressure rotary grouting drill bit extend along the long direction of the pipe pile body. The top is connected to the outside, and the ports on the other side are all located at the bottom of the pipe pile body, and are also connected to the outside. The invention effectively solves the technical problem of "improving the load-bearing and pull-out performance of prestressed concrete pipe piles", and has the remarkable advantages of being able to improve construction quality and construction efficiency.

Description

technical field [0001] The invention relates to a prestressed concrete pipe pile, in particular to a high bearing and pull-resistant prestressed concrete pipe pile. Background technique [0002] Prestressed concrete pipe piles are important basic components in the field of construction engineering, and can be divided into post-tensioned prestressed pipe piles and pre-tensioned prestressed pipe piles. Pretensioned prestressed pipe pile is a hollow cylindrical slender concrete prefabricated component made by pretensioned prestressing process and centrifugal forming method. It is mainly composed of cylindrical pile body, end plate and steel ferrule. The post-tensioning method is to apply prestress through the internal reserved holes after the initial setting of the concrete in the pipe pile. Prestressed concrete pipe piles are code-named PC piles, prestressed high-strength concrete pipe piles are code-named PHC piles, and thin-walled pipe piles are code-named PTC piles. [00...

AI Technical Summary

Problems solved by technology

[0005] In addition, the existing prestressed concrete pipe pile body connection method is to directly use the welded pile body end plate. Brittle fractures are prone to occur behind the slab, and at the same time, the pile is pressed due to insufficient cooling during the construction process. As a result, the joint of the pile body becomes a weak point, and the multi-section pile body cannot be effectively integrated, which seriously affects the pullout performance of the prestressed concrete pipe pile.

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