RU2074300C1 - Method for dismantling floor shuttering - Google Patents

Abstract

FIELD: civil engineering. SUBSTANCE: shuttering is teared off from the surface of concreted room, traverse "duck nose" type is installed over the floor. Then the shuttering is suspended over the traverse using interim rests. Lifting mechanism is slung once again on the center of gravity of the system "shuttering-traverse". Interim rests are removed and the shuttering is withdrawn together with the traverse from the formed room. EFFECT: lower labour consumption. 3 dwg

Description

 The invention relates to the construction and can be used in the construction of monolithic buildings with the use of tunnel or table formwork.

For the dismantling of tunnel or table formwork and its removal from the molded room, it is known to use cantilever scaffolds equipped with a roller table with a drive for moving the formwork: cantilever scaffolds are installed inside the volumetric formwork and fixed to the building structure. Then, with a winch, the formwork is pulled out onto the cantilever platform and removed by a lifting mechanism [1]
The disadvantages of this device are the complexity of the design of the console scaffolds and the high complexity of their installation.

It is also known a device for moving a volumetric climbing formwork, which allows you to gradually pull the formwork from the molded room at one end, hung on the hook of the lifting mechanism. The second end of the formwork rests upon removing it on a roller trolley equipped with a hydraulic jack and a brake bar. When the trolley reaches the edge of the floor, the trolley roller freezes and the formwork stops. Further, the formwork is hung at both ends on the crane hook and is removed from the molded room [2]
To work with the described formwork, a hydraulic cylinder with a drive is required, which also complicates the design and working conditions with it at a construction site.

 In analogue [3], the tunnel formwork is also removed by slinging it on the hook of the lifting mechanism: the formwork is moved to the edge of the molded room, one end of it is slung to the crane hook, then the load is gradually pulled out m after leaving its center of gravity beyond the dimensions of the room hang on the hook crane for the second point located near the center of gravity of the formwork.

 The disadvantage of the described method is the need for slinging the formwork of the canopy, which adversely affects the working safety conditions.

To remove the canteen formwork used to form a monolithic slab, the use of cantilever beam is known: the casing is rolled out a certain distance from the molded room, then the cantilever arms are brought into the sides of the formwork and, after hanging the formwork on it, they are pulled out [4]
The described technique requires high technological discipline and is only suitable for dismantling table formwork.

Closest to the invention is a method involving the use of a duck nose traverse: when removing the formwork, it is torn off the concrete surface, lowering it from the ceiling downwards, then the traverse is brought under the formwork on the traverse, while simultaneously moving the suspension point of the traverse on the hook of the load-lifting mechanism so that it is located on the same vertical line with the center of gravity of the "formwork-traverse" system, and then the formwork is removed from the room [5]
The disadvantage of this method is the complexity of the design of the traverse duck nose, allowing in the process of working with it to move the suspension point of the traverse on the hook of the lifting mechanism, depending on the location of the formwork removed from the concrete room.

 The objective of the invention is the creation of a method of dismantling the formwork of the tunnel or table types, providing safe working conditions using simple to manufacture and operate devices.

 In FIG. 1 shows the separation of the formwork from the concrete room and the installation of the beam; in FIG. 2 installation of temporary stops and pereropovka traverse; in FIG. 3 removal of formwork from a concrete room.

 The method is carried out in the following order.

 After the formation of room 1 is completed, the formwork 2 (it can be the floor formwork or the tunnel formwork shown) is separated from the surface of the concrete floor 3, for which it is lowered on jacks 4 and mounted on wheels 5. Simultaneously with this operation or immediately after it in the molded room a traverse of type 6 duck nose is introduced in such a way that it covers the ceiling shield of the formwork 7. The traverse is suspended at its center of gravity 8 on the hook of the lifting mechanism 9. Then, it is molded between the floor 10 On the premises and the traverse, set the temporary stops 11 so that they press the bottom 12 of the traverse to the ceiling formwork shield, forming a single “formwork-traverse” system with its own center of gravity 13. Setting the temporary stops makes it possible to re-load the hoisting mechanism along the center of gravity of the “formwork” system Traverse. " Next, the temporary stops 11 are removed and removed from the molded room.

 The use of temporary stops allows you to simplify the design of the traverse and secure the process of extracting the formwork of the floor from the molded room.

Claims (1)

 The method of dismantling the shuttering formwork, which consists in installing the duck nose traverse in the formwork using a hook of the lifting mechanism, tearing off the formwork from the concrete surface, hanging it on the traverse with the center of gravity of the formwork-traverse system moving along the hook axis of the lifting mechanism and then removing it from the concreted premises, characterized in that the formwork is hung on the beam by setting temporary stops between the beam and the floor of the concrete room, and the center of gravity of the op system lubok-traverse axis of the hook-lift mechanism is performed when perestropovkoy hook hung on the temporary abutments crosshead then removed and recovered stops temporary shuttering.

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