Construction method for compacting concrete at horizontal joint of waterproof concrete

Abstract

The invention relates to reverse construction of industrial building rotational flow wells, in particular to a construction method for compacting concrete at a horizontal joint of waterproof concrete. The construction method can ensure the compactness of the concrete at the horizontal construction joint and comprises the steps that earthwork of an upper section of a rotational flow well is excavated, reinforcing steel bars are bound, and a water stop plate is welded to the inner part of the cylinder wall of the rotational flow well; obliquely arranged grouting guide pipes are arranged on the water stop plate at intervals; a sand cushion layer is poured, so that a sand cushion layer submerges the middle of the water stop plate; a formwork is erected, and upper section concrete is poured; the earthwork at a lower section of the rotational flow well is excavated, the sand cushion layer is removed, and the reinforcing steel bars are bonded; a formwork is erected, and lower section concrete is poured; and grouting is carried out at the joint of the upper concrete section and the lower concrete section through a grouting guide pipe. Through the water stop plate and the grouting guide pipe, dense construction at the joint is more convenient, construction operation is easy and convenient, the construction period is shortened, and through mutual cooperation of the water stop plate and slurry injected through the grouting guide pipe, concrete construction joints at the upper end and the lower end are tight in joint and good in waterproof effect.

Description

technical field [0001] The invention relates to the reverse construction method of the swirling well of industrial buildings, in particular to a concrete compaction construction method at horizontal joints of waterproof concrete capable of ensuring the compactness of the concrete in the horizontal construction joints. Background technique [0002] At present, the construction of swirling wells in domestic industrial buildings usually adopts caisson method, forward method and reverse method; the construction of caisson method is not suitable for areas with hard soil and rock layers, and the method of forward method is very important for the stability of deep foundation pit slopes, The groundwater level and other requirements are extremely strict. At this time, the reverse method is the best method, and the waterproofness of the waterproof concrete is the most important thing; usually, the waterproofness of the structure is guaranteed by adding bell mouth pouring concrete, but ...

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Problems solved by technology

[0002] At present, the construction of swirling wells in domestic industrial buildings usually adopts caisson method, forward method and reverse method; the construction of caisson method is not suitable for areas with hard soil and rock layers, and the method of forward method is very important for the stability of deep foundation pit slopes, The groundwater level and other requirements are extremely strict. At this time, the reverse method is the best method, and the waterproofness of the waterproof concrete is the most important thing; usually, the waterproofness of the structure is guaranteed by adding bell mouth pouring concrete, but this method cannot be vibrated. Dense, it is difficult to ensure the compactness of the concrete on the outside of the water stop board, so it is difficult to ensure its waterproof performance, and the effect is not good

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