A grouting device for bored pile and its construction method

Abstract

The application relates to a grouting device for bored piles and its construction method, which includes a frame arranged at the hole of the foundation pile, two sliding seats on the frame that slide symmetrically along the radial direction of the hole, and the sliding seats close to the hole The side wall is provided with guide rollers for rotation, and the frame is provided with a driving device for driving the two sliding seats to slide synchronously and reversely; it also includes lap joints fixed on the outer walls at both ends of the pipe section, and the sliding seats are raised and lowered in the vertical direction. A lapping platform is provided, and a lifting device for driving the lapping platform to reciprocate is arranged on the sliding seat. When pouring concrete, insert the spliced ​​pipe section into the orifice, drive the two sliding seats to approach synchronously, and clamp the grouting pipe, the guide roller guides and corrects the grouting pipe, and then makes the grouting pipe go up The lapping lugs of the joints are lapped on the lapping platform, and then the lapping platform is driven to reciprocate up and down to ensure the smooth flow of concrete in the grouting pipe. This application has the effect of improving the quality of foundation piles and saving manpower.

Description

technical field [0001] The present application relates to the field of foundation pile construction engineering, in particular to a grouting device for bored piles and a construction method thereof. Background technique [0002] Bored cast-in-place pile refers to a pile made by forming a pile hole in the foundation soil by means of mechanical drilling, steel pipe extrusion or manual excavation at the project site, and placing a steel cage and pouring concrete in it. Compared with the hammer method of sinking piles, the construction noise and vibration are much lower, the diameter of piles can be constructed much larger than the precast piles, and it can be used on various foundations. [0003] The patent with the authorization announcement number of CN207775893U discloses a segmented grouting pipe for bored pile foundation, which includes: a plurality of pipe sections that are spliced ​​and connected to each other, and a joint is sleeved on the pipe section located at the lo...

AI Technical Summary

Problems solved by technology

[0004] Regarding the above-mentioned related technologies, there are the following defects: during grouting, construction workers generally need to lift the grouting pipe up and down, so as to avoid concrete blockage in the grouting pipe, and the pipe is easy to hit the steel cage when it is lifted. The forming quality of the foundation pile is affected

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