SU1435732A1 - Method of constructing thin-walled solid ferroconcrete dome - Google Patents

Abstract

The invention relates to the field of construction and is used in the erection of structures using pneumatic formwork. The goal is to reduce labor costs during the construction of li increase the strength of the dome. After testing 1 and the pneumatic form 4, the mounting ring 5 is attached to it from above in the central part, then air is released from the form and spread on the horizontal base 1 and attached to the foundation 2. Inside the ring 5, the reinforcement is made with flexible stretch reinforcement 10, and outside - flexible rebar II. Compaction of the concrete mix in the area inside the mounting ring 5 is carried out after lifting the pneumatic formwork 4 with the materials laid on it in the design position. 5 il.

Description

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The invention relates to the construction and can be used for the construction of thin-walled monolithic reinforced concrete dome structures for various purposes using pneumatic formwork.

The purpose of the invention is to reduce labor costs during construction and increase the strength of the dome.

FIG. 1 shows a pneumatic panel with a mounting ring and petals, spread out on a horizontal base With two kinds of folds and attached to the foundation, a section; in fig. 2 - the same, top view; in fig. 3 - the same, after reinforcing the dome, laying the concrete mixture over the entire area of the horizontal projection of the dome and its compaction in the faces of the dome outside the mounting ring, section; in fig. 4 - the same, after lifting the pneumatic wallboard together with the laid materials into the design position, compacting the concrete mix in the area inside the mounting ring, cut; in fig. 5 - dome, general view.

The method is carried out as follows.

On a horizontal base 1, a pneumatic strip 4, which in its upper part has a mounting ring 5 attached to it after its testing for strength and tightness, is laid out and attached to the foundation 2 by fastening elements 6, which are flexible fabric petals 6 laid without folds over the pneumatic deck 4 and attached to it, as well as the pipe 7 for supplying air. Pneumatic form 4 spread with two types of radial folds, and folds 8 inside the mounting ring and folds 9 outside the mounting ring are laid independently of each other, and in the place of attachment of the mounting ring they are missing. The dome is reinforced by laying out and attaching flexible expansion reinforcement 10 to the mounting ring 5, for example, flexible serpentine reinforcement inside the mounting ring 5 and flexible mesh straight linear reinforcement I1 outside the mounting ring 5. After placing the concrete mixture 12 over the entire horizontal projection area of the dome and its sealing in the face of the dome outside the assembly; to the end; by vibrating air into the internal cavity of the pneumatic deck, air is fed under pressure and lift the pneumatic deck 4 together with the stacked materials ectnoe position. During lifting, the fabric of the pneumatic deck 4 inside the mounting ring 5, laid with radial folds 8, straightens, the flexible stretch reinforcement 10 stretches, slightly loosened at this time the previously laid concrete mix, and the petals with the laid materials on

crawling on the pneumatic wall 4 and placed on it, bending in the meridional direction. After lifting the pneumatic form 4 to the design position, the concrete is compacted by vibrating (13) in the area inside the mounting ring 5, and the joints between the faces of the dome 14 are sealed by known methods. The lifting of the pneumatic formwork together with the laid materials to the design position is completed before the cement setting begins. After a set of concrete with the required strength, the air from the pneumatic formwork is released and it is dismantled.

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Claims (1)

Invention Formula The method of erecting a thin-walled monolithic reinforced concrete dome, the air-inlet of the pneumatic wall for testing the strength and tightness, removing air from it, spreading the pneumatic wall on a horizontal base with radial folds together with attached petals from a flexible material laid over the pneumatic wall without folds, repeating the shape of the sweep of the faces of a multi-faceted dome on the plane, laying of flexible mesh reinforcement and concrete mix on the petals, lifting the pneumatic deck with compacted concrete with the mixture prior to setting of the cement to the design position by supplying it with air pressure, followed by sealing joints between the edges of the dome and keeping the concrete under constant excess air inside the pneumatic deck before gaining them the required strength, characterized in that, in order to reduce labor costs in erecting and increasing the strength of the dome, before removing air from the pneumatic deck after testing it strength and tightness to it from above in the central part attach the mounting ring and the part of the pneumatic wall that is directly under the mounting ring, spread out without radial folds, and the rest with radial folds oriented in the opposite direction inside and outside the mounting ring, In this, the petals are placed outside the mounting ring and attached to it, the reinforcement is also attached to the mounting ring. the ring, and a part of the dome inside the mounting ring are reinforced with flexible stretch reinforcement and compact the concrete mixture laid on it after raising the pneumatic formwork with the concrete layer laid in the design position before sealing joints between the grand domes.  five J 2 I 9ag.1 9LL8. Z s 7 - / / A X /. at (// //// / I // T, / Fy //  / f,,. . / / / / / // / / / / -L7: //// X / // 7 3 FIG. five