Construction method of bored pile

Abstract

The invention relates to a bored pile and a construction method, wherein an assembled bearing body, a shallow solidified body and a pier top platform are arranged on the outer side of a fixing pile casing, the fixing pile casing is accurately positioned through a transverse alignment body and a vertical alignment body; rainproof diversion is carried out through a pile casing vertical plate and a pile casing cover plate; the slag extraction construction is carried out by a slag extractor; hoisting and lengthening construction of a reinforcing cage of a cast-in-place pile are carried out by a reinforcing cage hoisting frame; a flexible separation layer and a flexible separation body are arranged outside the vertical reinforcing bar of the bored pile cutting section in advance; after the vertical positioning plate is used for auxiliary positioning of the over-filling section of the cast-in-place pile, the flexible separation body is taken out firstly, then the cast-in-place pile is cut off, and then the over-filling section of the cast-in-place pile is lifted off by a pile head lifting appliance. The construction method provided by the invention not only can improve the positioning accuracy and the installation and construction efficiency of a fixing protective casing of the bored pile, but also can reduce the difficulty of hoisting and lengthening construction of the reinforcingcage, and also can improve the construction efficiency of hole slag extraction and cutting off the over-filling section of the cast-in-place pile.

Description

technical field [0001] The invention relates to a bored cast-in-situ pile and a construction method, in particular to a bored cast-in-situ pile and a construction method with accurate positioning of a fixed casing, convenient hoisting and positioning of a steel cage, rapid cut-off of super-filling sections of cast-in-place piles, and efficient removal of hole slag, and belongs to In the field of geotechnical engineering, it is suitable for the construction of bored piles. Background technique [0002] Bored piles have the advantages of high bearing capacity and reliable construction quality, and have been widely used in construction engineering and bridge engineering. However, in many construction links of cast-in-place piles, there are still problems such as precise positioning of fixed casings, rapid hoisting of steel cages, efficient extraction of hole slag, and green pile cutting at pile heads that have not been reliably resolved. [0003] There is a construction method...

AI Technical Summary

Problems solved by technology

Although this construction method solves the problem of low extraction efficiency of hole slag and improves construction efficiency to a certain extent, there are still some improvements in terms of reducing the difficulty of hoisting the steel cage and improving the installation and positioning accuracy of the construction casing.

[0004] To sum up, although the existing construction methods have achieved good construction results under suitable working conditions, there are still room for further improvement in terms of reducing the difficulty of steel cage hoisting, precise positioning of construction casings, and quick truncation of piles.

Images