A kind of construction method of jacking concrete pumping

Abstract

The invention discloses a concrete jacking and pumping construction method, comprising the following steps of S1, design preparation; S2, mounting of a high-pressure pump pipe: mounting a concrete pump, and fixing the high-pressure pump pipe on the concrete pump; S3, installation of a transition pipe: forming grouting holes in the side wall, close to the bottom, of a steel pipe column, inserting the transition pipe into the grouting holes, fixedly connecting the transition pipe and the steel pipe column via welding, and installing a high-pressure concrete stop valve between the transition pipeand the high-pressure pump pipe; S4, concrete jacking: starting the concrete pump to convey concrete, and closing the high-pressure concrete stop valve after the concrete is pumped to the top of thesteel pipe column; and S5, operation after pouring: after the concrete is initially set, cutting off the part, extending out of the steel pipe column, of the transition pipe and conducting reinforcing. Concrete is poured upwards from the bottom of a steel pipe column, so that the stirring of the concrete in the steel pipe column is enhanced, and the uniformity and compactness in the steel pipe column are improved.

Description

technical field [0001] The invention relates to the technical field of concrete construction, and more particularly, to a construction method for jacking up concrete pumping. Background technique [0002] Pumped concrete is the concrete that can be transported by a concrete pump through a pipeline. In order to speed up the construction, pumped concrete is often used in the construction of high-rise or super high-rise buildings. In the process of super high-rise construction, the concrete is poured with three layers and one column. In order to utilize the gravity of the concrete and reduce the energy consumption for pumping the concrete, the high-pressure pump pipe extends from the top of the column to make the concrete fall from top to bottom. into the column. [0003] The disadvantage of the prior art is that, due to the top-down pouring method, a high-pressure pumping pipe is required to protrude from the top of the column, and the concrete is piled up from the bottom to...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the existing technology is that due to the top-down pouring method, high-pressure pumping pipes are required to extend from the top of the column, and the concrete is poured from the bottom up to pile up

Because the concrete at the bottom is poured first, it will lead to faster setting, so that the concrete in the entire column in the later stage cannot achieve the same internal self-compacting degree, so the later stage vibration is required to achieve consistent compactness

The concrete poured at the bottom first is in a static state, and there will be a problem of initial consolidation due to water loss, which will lead to a decrease in the overall strength of the concrete after the vibration is completed.

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