SU1165738A1 - Method of preconcreting of steel lining - Google Patents

Abstract

1. METHOD OF PRELIMINARY CONDITIONING OF STEEL COUNTERS with the formation of a steel-concrete facing block with a V-shaped gable shape, including the installation of facing with a steel sheet down onto the supporting surface of the rack, equipping the facing with formwork and placing the facing into the top facing of the concrete mix with subsequent alignment of the back of the staff. the fact that, in order to save formwork materials, reduce labor costs and improve the quality of the backing, before installing the facing, the supporting surface of the shelving was taken the angle ci corresponding to the slope of the inclined edges of the cladding block is inclined to the horizon, and the formwork is made in the form of a partition, is placed in the middle of the sheet and the concrete is laid in the upper half of the cladding, and after otverzhbetonton the facing of the unfolding of the plan is 180 and stacked beats in the second half of the lining. 2. A method according to claim 1, characterized in that the rack is rotated around the horizontal axis, and after the concrete cured in the upper half of the lining is cured, the rack is rotated around the horizontal axis by an angle of 2 dC to reverse the facing of the lining, and In this position, the concrete mix is placed in the second half of the lining.

Description

1 The invention relates to the construction and can be used in the construction of hydraulic conduits, lined with metal. The purpose of the invention is to save materials, reduce labor costs and improve the quality of concrete. FIG. 1 shows the initial installation of the lining on the rack; in fig. 2 - concreting the first half of the lining; in fig. 3 — installation of the lining on the rack after the concrete of the first stage cures and the partition is removed; in fig. 4 - the concrete block became steel after the end of the coating in FIG. 5 is a variant of a technical solution using a swing of a rack (the embedding step, corresponding to FIG. 2). A lining is installed on the support surface of the rack 1, inclined towards the mountains at an angle s, and then made of steel sheet 2 with welded ribs 3 and anchors 4. The lining is equipped with a formwork, an optional partition 5 and supports 6. The facing is laid successively with concrete a mixture of 7 and 8 is spread and compacted. According to the proposed method, the steel facing of the cladding is carried out in the following sequence. First, as with the known method, lining with ribs 3 and anchors 4 is installed with sheet 2 down onto a flat supporting surface of the rack 1, with the supporting surface inclined to the horizon at an angle (.. In the middle of the cladding, formwork 8 is installed in the form of a partition 5, which is temporarily rigidly fixed with struts 6. Then, pour the upper half of the facing overlapped in half with a concrete mixture 7 with concrete mixers 7 the horizontal surface 9 of the concrete is one of the two inclined surfaces of the future V-shaped block. is removed, after which, in a similar manner, concrete 8 So is poured into the second half of the lining, while the free horizontal surface 10 of the concrete is the second inclined surface of the V-shaped block. The formwork can be reused, and if it is made of steel mesh, it is left in the concrete. In another embodiment of the technical solution (Fig. 5), a swinging stand-rack is used, capable of changing its angle of inclination by turning around a horizontal axis. In this case, after the upper half of the cladding is planted, it is not necessary to remove it from the rack and unfold it in the plan by 180 °. In order to give the facing a reverse tilt, the rack 1 is rotated around a horizontal axis 11 through an angle of 2c. after which, removing the partition 5, the second half of the cladding is molded. In this way, labor savings associated with slinging, lifting, turning and re-installing and reinforcing cladding on an inclined rack are saved.

FIG. 2

FIG. 3

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Claims (2)

1. METHOD FOR PRELIMINARY CONCRETING OF STEEL FACES with the formation of a steel-concrete cladding block of a V-shaped gable shape, including installing the cladding with a steel sheet down on the supporting surface of the rack, equipping the cladding with the formwork and laying it in the lining on top of the concrete mixture, characterized in that formwork materials, reducing labor costs and improving the quality of concrete coating, before installing the lining, the supporting surface of the rack is inclined to the horizon at an angle of o4, s Corresponding to the corner of the slope of the inclined faces of the facing block, and the formwork is made in the form of a partition, installed in the middle of the sheet and laid concrete in the upper half of the cladding, and after curing the concrete, the cladding is turned 180 in plan and laid in the second half of the cladding. 2. The method of pop. 1, characterized in that the rack is made to swing around the horizontal axis, and after curing the concrete laid in the upper half of the cladding, the rack is rotated around the horizontal axis by an angle of 2 ° C to impart a reverse slope to the cladding, and in this position the concrete mixture is laid in £ /•to