Cast-in-situ bored pile and construction method

Abstract

The invention provides a cast-in-situ bored pile and a construction method. A rotating bed mould and a fixed bed mould are arranged, after longitudinal reinforcement is positioned through built-in stirrups, and with the help of a bed mould inhaul cable and a bed mould slide rail, separately bound steel pipe pile reinforcement cages are closed into a circle correspondingly; the height and directionof cast-in-place pile reinforcement cages are adjusted by a lifting control body and a pallet turntable; an outer layer protection casing is arranged on the outer side of an inner layer protection casing, and position control can be carried out on the inner layer protection casing by adopting a bag position correction body and a casing position correction cross bolt and a casing position correction vertical rod; a casing side supporting plate and a mould bottom grouting body are arranged at the junction of the outer layer protection casing and a foundation soil body; an upper layer supportingbody and a lower layer supporting body on the outer side of the cast-in-place pile reinforcement cages both include two reinforcement cage hoops; and a laitance recovery tank and a slurry purification tank are arranged on the outer side of the inner layer protection casing, and an in-reinforcement bag, a reinforcement-side bag and a concrete pressure removing tube are arranged on column reinforcement cages.

Description

technical field [0001] The invention relates to a fixing and positioning device for a reinforced cage of a bored cast-in-situ pile, which can improve the quality of the binding construction of the reinforced cage, reduce the difficulty of connecting and positioning the reinforced cage of the cast-in-situ pile, and improve the concrete pouring quality of the pile body of the cast-in-situ pile, belonging to foundation and foundation engineering projects Field, suitable for bored pile foundation construction. Background technique [0002] Bored piles are widely used in civil engineering construction. In the construction of bored piles, it often involves issues such as steel casing setting, reinforcement cage binding and lengthening, pile head treatment, and concrete pouring quality improvement. [0003] In the prior art, there is a construction method of rotary drilling bored piles. The construction method is as follows: a drill bit with a diameter greater than D pile diameter...

AI Technical Summary

Problems solved by technology

This technology can solve the problems of hole formation and concrete pouring in soft ground, but it is difficult to solve the problems of efficient binding and positioning and lengthening of steel cages, and still faces the problem of chiseling pile heads, and the construction process is relatively complicated

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