Underwater concrete grouting pile top elevation control construction method

Abstract

The invention provides a underwater concrete grouting pile top elevation control construction method. An elevation measuring instrument for manufacturing underwater grouting concrete is used, is put in a pile hole in casting, and is ascended along with casting of underwater concrete by using different buoyancy in mud and concrete; after the elevation measuring instrument reaches a preset height, the measurement rechecking is performed; and the casting is stopped after the rechecking is qualified. The elevation measuring instrument adopts a specific thin-wall polyethylene plastic pipe as a main material; according to the gravity characteristics, the bottom of the measuring instrument is conical; a back cover is connected by a mantle fiber; and striking anti-rust paint is brushed. The method can effectively solve the pile top elevation control difficulty, and is direct, effective, simple and feasible. Meanwhile, the method guarantees effective length of the grouting pile, reduces meaningless waste of the concrete, guarantees the strength and the total stability of the grouting pile, achieves excellent effects of fast construction, energy conservation and high efficiency, and has promotional value.

Description

technical field [0001] The invention relates to a construction method for controlling the elevation of the pile top of an underwater concrete filling pile, which is suitable for the construction of the underwater concrete filling pile of a bridge. Background technique [0002] At present, the traditional construction technology of concrete pouring pile construction mainly uses the measuring rope and the estimation of the pouring volume to control the height of the pile top. Pile length is often too small or too large, too small will cause the quality defect of insufficient effective length of the cast-in-place pile body; super high pile body will cause serious waste of materials and increase the workload of pile head removal, and some of the height of the pile head will be removed Even up to 3 meters, making how to simply and effectively control the pile top elevation when pouring piles are poured becomes a problem to be solved. [0003] Jinan Urban Construction Group has c...

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Problems solved by technology

[0002] At present, the traditional construction technology of concrete pouring pile construction mainly uses the measuring rope and the estimation of the pouring volume to control the height of the pile top. Pile length is often too small or too large, too small will cause the quality defect of insufficient effective length of the cast-in-place pile body; super high pile body will cause serious waste of materials and increase the workload of pile head removal, and some of the height of the pile head will be removed Even up to 3 meters, making how to simply and effectively control the height of the pile top when the cast-in-situ pile is poured becomes a problem to be solved

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