A construction method for reinforced concrete cast-in-place pipe piles

Abstract

The invention relates to a construction method of a reinforced concrete current-poured pile. The method mainly comprises the steps that (1), a slurry protecting wall is drilled for hole forming, a drilling machine is used for drilling a hole in the hole forming process, and then the hole bottom is chambered through a branch tray forming machine; (2), the expanding end at the bottom of the pile is poured in an underwater concrete pouring mode; (3), a reinforcing cage is manufactured, stirrups are provided with reinforced protection cushion blocks at intervals, and a positioning support is formed; (4), inner side mould bags and outer side mould bags are attached to the inner side and the outer side of the positioning support respectively, and end boards are installed at the bottom of the positioning support; (5), the positioning support and the mould bags are pressed into the hole together; (6), micro-expansion concrete is poured in the space of the inner side mould bags and the outer side mould bags; (7), after the concrete of a pile body reaches the intensity, a pile top closing body and a cover board are constructed. The reinforcing cage is arranged in the reinforced concrete current-poured pile, the pile bearing capacity is improved, influence on the quality of the finished pile from foundation soil is reduced, the construction speed is high, quality is convenient to ensure, and good economic benefits and social benefits are obtained.

Description

technical field [0001] The invention relates to a construction method of a cast-in-place pipe pile, in particular to a construction method of a concrete cast-in-place pipe pile which can be inserted into a reinforcement cage. Background technique [0002] Pipe piles have the advantages of high unilateral concrete bearing capacity, large side friction resistance and good bending resistance, and have been selected by more and more soft soil foundation treatment projects. From the perspective of construction technology, pipe piles can be divided into prefabricated pipe piles and cast-in-place pipe piles. Prefabricated tubular piles have the advantages of high single pile bearing capacity, reliable pile quality, good hammer resistance and crack resistance of the pile body; however, considering factors such as transportation and construction, it is necessary to increase the amount of steel bars to increase strength and resist construction. destructive, thus increasing the cost; ...

AI Technical Summary

Problems solved by technology

However, the common cast-in-place concrete pipe piles are plain concrete piles, the bearing capacity of the pile body is low, and there are obvious spinous process benefits during the pipe sinking process, and quality problems such as necking are prone to occur

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