RU2792875C1 - Mortar gate for pipe concrete columns - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention can be used in the bottom-up concreting of a pipe concrete column during the construction of a building frame. The technical result consists in improving the quality of concreting, regardless of the height and diameter of the column. The technical result is achieved by the fact that the mortar gate in the pipe concrete column is placed at the base of the column at a distance of 300…400 mm from the base plate and consists of two segments combined into a sleeve with a radius equal to the outer radius of the column, having bends at the edges with two bolt holes symmetrically located at a distance of 30…50 mm from the upper and lower edges, one of the segments has a hole, the diameter of which is equal to the diameter of the inlet hole of the column, and a branch pipe with a flange welded along the contour of the hole perpendicular to the axis of the segment for attaching the concrete pump hose; two synchronously operating hydraulic jacks, symmetrically located on the base plate, abutting against the bolted limbs of the segments and moving the coupling up to the stop, fixing the closing of the inlet of the column.

EFFECT: improving of the quality of concreting, regardless of the height and diameter of the column.

1 cl, 3 dwg

Description

The invention relates to the field of construction and can be used in the bottom-up concreting of a pipe concrete column during the construction of a building frame.

Studies [1, 2] show that filling under pressure with a concrete pump of the column shaft with a moving concrete mix from bottom to top through the inlet is technologically advanced, low-cost and allows continuous concreting of a column of great height (16 or more floors [3]). However, when the pressure in the system is released, the concrete mixture partially flows out of the inlet and settles - while uncontrolled, especially at high height and small pipe diameter, the mixture may hang in the column shaft, the formation of voids and loose zones. These phenomena can be eliminated by installing a mortar gate at the inlet of the column.

The technical result consists in improving the quality of concreting, regardless of the height and diameter of the column. At the same time, there is no need for vibrocompaction of the concrete mixture and energy costs are reduced.

The technical result is achieved as follows.

A mortar gate in a column of pipe concrete is placed at the base of the column at a distance of 300 ... 400 mm from the base plate. The difference is that it consists of two segments combined into a sleeve with a radius equal to the outer radius of the column, having bends at the edges with two holes for bolts, symmetrically located at a distance of 30 ... 50 mm from the upper and lower edges. One of the segments has a hole, the diameter of which is equal to the diameter of the inlet hole of the column, and a branch pipe with a flange welded along the contour of the hole perpendicular to the axis of the segment for attaching the concrete pump hose; The gate valve also contains two synchronously operating hydraulic jacks, symmetrically located on the base plate, abutting against the limbs of the segments connected by bolts and moving the sleeve up to the stop, which fixes the closing of the inlet of the column.

The design of the mortar gate is illustrated by the drawings shown in Fig. 1, 2 and Fig. 3.

On FIG. 1 shows the design of the mortar gate assembly with column 1, base plate 2 and jacks 3 in open (a) and closed (b) states.

On FIG. 2 shows the design of a detachable mortar valve coupling.

On FIG. 3 shows the design of the nozzle 9 assembled with the flange 10.

The design of the mortar gate in the assembly includes segments 4 and 5, having bends at the edges with holes for bolts 6 with a diameter of 8 ... 10 mm. Segment 5 is provided with a hole 7, the diameter of which coincides with the diameter of the inlet hole of the pipe 8 of the column 1, and a branch pipe 9 welded along the contour, having a flange 10 at the end. relative to the inlet and stop 12 welded to the column.

The solution shutter is collected and put into operation as follows.

An inlet 9 is arranged on the pipe of the column shaft installed in the design position and fixed on the foundation, at a distance of 300 ... 500 mm from the base, after which the coupling 11 is installed on the pipe, combining the inlets of the pipe and the segment, the coupling is fixed with bolts 6. jacks 3 in contact with the clutch. A concrete pump is attached to the flange 10 of the pipe and a plastic concrete mixture is pumped into the column pipe. After filling the pipe, the concrete pump is turned off and at the same time, the clutch 11 is moved up the pipe with jacks until it stops 12, which fixes the closing of the inlet of the column. After the concrete has gained the required strength, the mortar gate is dismantled, and the inlet in the pipe is closed with an overlay, connecting it to the pipe by welding.

Bibliographic list

1. Patent of the Russian Federation No. 2274719 dated May 25, 2004 A method for strengthening a reinforced concrete column that has lost its bearing capacity.

2. Patent of the Russian Federation No. 2477773 dated 07/15/2011 Method for manufacturing pipe-concrete elements of a steel two-branched column.

3. Storozhenko L.I. Pipe-concrete structures - Kyiv: Budivelnik, 1978.

Claims (1)

A mortar gate in a column of pipe concrete, located at the base of the column at a distance of 300 ... 400 mm from the base plate, characterized in that it consists of two segments combined into a sleeve with a radius equal to the outer radius of the column, having bends at the edges with two holes for bolts, symmetrically located at a distance of 30 ... 50 mm from the upper and lower edges, one of the segments has a hole, the diameter of which is equal to the diameter of the inlet hole of the column, and a pipe with a flange welded along the contour of the hole perpendicular to the axis of the segment for attaching the concrete pump hose; two synchronously operating hydraulic jacks, symmetrically located on the base plate, abutting against the bolted limbs of the segments and moving the coupling up to the stop, fixing the closing of the inlet of the column.

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