Construction method of concrete pipe pile

Abstract

The invention relates to the technical field of concrete pipe piles, and discloses a construction method of a concrete pipe pile. The construction method includes the steps that a hollow area is formed on the interior of the pipe pile in a surrounding mode, and a plurality of installing holes formed in the axial direction and at intervals are reserved in the side wall of the pipe pile; the inner end of a grouting floral pipe is inserted into the installing holes, and the pipe pile with the installed grouting floral pipe is arranged in a pile hole; a pushing steel pipe whose outer diameter is smaller than the inner diameter of the hollow area of the pipe pile, the pushing steel pipe is inserted into the hollow area and abuts against the outer end of the grouting floral pipe, and the inner end of the grouting floral pipe is pushed out of the installing holes and is embedded into the soil mass outside the pipe pile; when the pushing steel pipe is completely inserted into the hollow area of the pipe pile, then a grouting gap is arranged between the outer side wall of the pushing steel pipe and the inner side wall of the pipe pile, and the outer end of the grouting floral pipe is exposed in the grouting gap; grouting liquid is grouted into the grouting gap, and the grouting liquid is grouted into the soil mass outside the pipe pile through the grouting floral pipe to form a groutingliquid package wrapping the inner end of the grouting floral pipe, so that pile side friction resistance force of the pipe pile and the surrounding soil mass is increased.

Description

technical field [0001] The patent of the present invention relates to the technical field of concrete pipe piles, in particular, to a construction method of concrete pipe piles. Background technique [0002] With the rapid development of urban construction, concrete pipe piles are widely used in industrial and civil buildings, municipal and other engineering fields due to a series of advantages such as reliable pile quality, high bearing capacity, fast construction, and good economy. [0003] At present, concrete pipe piles are divided into prestressed concrete pipe piles (PC pipe piles), prestressed concrete thin-walled pipe piles (PTC pipe piles) and prestressed high-strength concrete pipe piles (PHC pipe piles) according to the concrete strength grade and wall thickness. [0004] In the prior art, due to the inherent characteristics of the traditional concrete pipe pile, the frictional resistance between the pile side of the pipe pile and the surrounding soil is relativel...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method for concrete pipe piles, aiming at solving the problem in the prior art that the pile side friction between the pipe pile and the surrounding soil is relatively small

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