Feeding device of pouring pile underwater concrete and pouring method thereof

Abstract

The invention belongs to the field of building construction, in particular to a feeding device of pouring pile underwater concrete and a pouring method thereof. The device comprises a hopper, a hopper frame, a sleeve pipe, a guide pipe and a hopper plug. The feeding device is characterized in that the lower end of the hopper is provided with the lining guide pipe; fixed bolts are arranged outsidea lower port of the hopper; the upper end of the sleeve pipe is provided with a seal cap; bolt grooves are arranged outside the seal cap and respectively correspond to the fixed bolts outside the hopper in position; two folio valves are arranged on a clamping cover and sleeved at the lower port of the outer edge of the seal cap during working; the sleeve pipe is connected with the guide pipe by aflange; and the hopper plug is an iron plug of which both ends are in cone shapes. Compared with the traditional method for reducing the resistance of concrete in a pile and the slurry protecting wall on the concrete in the guide pipe just by lifting the guide pipe in a limited way, the invention greatly improves the active pressure of pouring concrete in the guide pipe, effectively solves the problem of difficult falling of the concrete, improves the pouring speed, ensures the molded pile quality and has obvious economic and comprehensive benefits.

Description

Technical field: [0001] The invention belongs to the field of building construction, and in particular relates to a feeding device and pouring method for underwater concrete of cast-in-place piles. Background technique: [0002] In the field of building construction, when the pouring of cast-in-situ pile concrete adopts the underwater concrete pouring technology, during the pouring process, due to the continuous mixing of soil on the wall of the pile hole into the mud retaining wall, the proportion of the mud retaining wall continues to increase, and the end of the conduit is buried The length of the concrete continues to increase. When the resistance pressure generated by the concrete in the pile and the mud retaining wall is greater than the pressure of the concrete's own weight in the conduit, the concrete in the conduit cannot fall, causing the conduit to be blocked. [0003] To solve this problem, a solution often used in the construction process is to reduce the burie...

AI Technical Summary

Problems solved by technology

[0004]In the field of building construction, in the process of pouring concrete in cast-in-situ piles, when the conduit is blocked, the traditional method is to lift the conduit to reduce the burial of the conduit end in the pile. Deep, so as to reduce the resistance force of the concrete in the pile and the mud retaining wall to the concrete in the conduit, but it is restricted by the lifting height of the conduit (the maximum value of the conduit lifting must be 300mm less than the depth of the concrete embedded in the pile at the end of the conduit), the reduction of this resistance force The amount is very limited, and the purpose of the present invention is to make the increase of the concrete self-weight pressure in the conduit not limited by the depth of the lower end of the conduit embedded in the concrete, and to increase it to a greater extent, so as to effectively solve the problem of conduit blockage

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