RU34954U1 - Formwork for the manufacture of monolithic reinforced concrete slabs - Google Patents

Abstract

1. Formwork for the manufacture of monolithic reinforced concrete slabs of variable, stepwise varying height, characterized in that it contains decks of sheet material, mainly plywood, installed on uneven inventory scaffolds, and under sections of a slab of a greater height, the deck is installed on a scaffold of a lower height and is made wider than the width of the section of the slab of greater height is not less than 200 mm with the formation of double-sided overhangs, each of which has a longitudinal beam, the side face of which forms the formwork of the corresponding side face of the section of the plate of greater height, and under the sections of the plate of lower height, the deck is installed based on the scaffold of a greater height and on the upper ends of the longitudinal beams, the side faces of which form the formwork of the side faces of adjacent sections of the plate of greater height. 1, characterized in that all the decks are made of a width equal to or a multiple of the width or length of a standard sheet material, mainly plywood.

Description

2003128741

III

MPK7EO4O 11/40

FORMWORK FOR MANUFACTURING MONOLITHIC REINFORCED CONCRETE NLITA

The utility model relates to construction and can be used in the manufacture of monolithic reinforced concrete slabs of variable stepwise changing height for buildings, structures for various purposes, both newly constructed and reconstructed.

Known formwork for the manufacture of ribbed monolithic reinforced concrete floors, including a support frame of longitudinal beams and vertical struts, a horizontal formwork panel and vertical and horizontal edge panels (see, for example, JP 43-70810, 01.10.68, EO1G 1/24).

The disadvantages of the known formwork is limited technological capabilities, excluding the construction of ceilings of various dimensions and parameters of the ribs.

Closest to the utility model in its essence and the technical result achieved is the formwork for the manufacture of monolithic reinforced concrete slabs of variable height, comprising a frame frame of vertical struts and longitudinal beams, a horizontal slab of the slab and vertical and horizontal shields of ribs, and the formwork is equipped with crossbars fixed to vertical racks intermediate supports located on the crossbars and longitudinal beams, removable runs, which are installed on the crossbars and have

stops in contact with vertical shields of ribs (SU938750A, 06.25.1982, EO1G 11/40).

Known formwork, providing the expansion of technological capabilities, is complex in design, material intensive, requires large labor costs for manufacturing, which makes it not economical.

The objective of this utility model is to increase the cost-effectiveness of the formwork design, reduce the complexity and material costs of its manufacture, simplify installation and dismantling, and reduce cost.

The problem is solved due to the fact that the formwork for the manufacture of monolithic reinforced concrete slabs of variable stepwise height according to the claimed utility model is characterized by the fact that it contains decks of sheet material, mainly plywood, installed on uneven inventory scaffolds, and the deck is mounted on scaffolds under sections of a plate of greater height shorter height and made wider than the width of the section of the slab of greater height by at least 200 mm with the formation of bilateral overhangs, of which a longitudinal beam is installed, the lateral edge of which forms the formwork of the corresponding lateral face of the section of the slab of greater height, and below the sections of the slab of the lower height, the deck is installed based on the scaffolds of greater height and on the upper ends of the longitudinal beams, the lateral faces of which form the formwork of the side faces of adjacent sections slabs of greater height.

Moreover, all decks can be made equal to or a multiple of the width or length of a standard sheet material. mostly plywood.

The technical result provided by the no-go model is to simplify the manufacture of formwork and its installation and dismantling while ensuring high quality of the manufactured monolithic reinforced concrete slab, ensuring the possibility of changing the dimensions of the manufactured slab without significant changes in the design of the formwork, and thereby reducing the cost of manufacturing a monolithic reinforced concrete slab, moreover the possibility of using cheap building sheet material, in particular plywood, is also provided In standard sizes without the need for additional labor costs for cutting and reducing thus the costs of the material and securing increased profitability.

The essence of the utility model is illustrated by the drawing, which schematically depicts a fragment of the formwork with manufactured reinforced concrete slab.

Formwork 1 for the construction of a monolithic reinforced concrete slab 2 contains installed on uneven scaffolds 3,4.5 decks 6 of sheet material, mainly plywood. Under sections 7 of plate 2 of greater height, deck 6 is mounted on a platform 3 of smaller height and made wider than the width of section 7 of plate 2 of greater height by at least 200 mm with the formation of double-sided overhangs 8. For each overhang 8, a longitudinal beam 9 is installed, lateral the face 10 of which forms the formwork of the corresponding side face 11 of the section 7 of the plate 2 of greater height. Under sections 12.13 of plate 2 of lower height, deck 6 is mounted with support on scaffolds 4.5 of higher height and on the upper ends 14 of longitudinal bars 9, side faces 10

which form the formwork of the side faces 11 of adjacent sections 12 of the plate 2 of greater height.

All decks 6 can be made equal to or a multiple of the width or length of a standard sheet material, mainly plywood, produced in sizes of 2440x1220 mm.

Formwork is made as follows. First, inventory scaffolds are installed under the sections of the plate of greater height. A deck is laid on the scaffold, on the overhangs of which longitudinal bars are installed. Then, scaffolds are installed under the sections of the plate of lower height, after which the deck of the section of the plate of the lower height is laid on these scaffolds and longitudinal beams. After this, the formwork is ready for installation of the reinforcing cage and concreting. After concreting, the formwork is disassembled in the following order. Remove the scaffold and deck under the section of the plate of greater height, remove the longitudinal bars, then disassemble the deck under the section of the plate of lower height. This ensures maximum turnaround of standard formwork material sheets.

Claims (2)

1. Formwork for the manufacture of monolithic reinforced concrete slabs of variable, stepwise varying height, characterized in that it contains decks of sheet material, mainly plywood, installed on uneven inventory scaffolds, and under sections of a slab of a greater height, the deck is installed on a scaffold of a lower height and is made wider than the width of the section of the slab of greater height is not less than 200 mm with the formation of double-sided overhangs, each of which has a longitudinal beam, the side face of which forms the formwork of the corresponding lateral face of the section of the plate of greater height, and under the sections of the plate of the lower height, the deck is installed based on the scaffold of the greater height and on the upper ends of the longitudinal beams, the side faces of which form the formwork of the side faces of adjacent sections of the plate of the greater height. 2. The formwork according to claim 1, characterized in that all the decks are made of a width equal to or a multiple of the width or length of a standard sheet material, mainly plywood.