RU2018603C1 - Method for construction of floors in monolithic buildings - Google Patents

Abstract

FIELD: construction. SUBSTANCE: method consists in installation of forms of walls and floor, concreting of walls and floor, and subsequent removal of forms with rearrangement of formed floor onto temporary supports. Floor is concreted for self-carrying part of its thickness, then, after concreted part attains forms strength, this part is rearranged on temporary supports, and floor is formed finally up to design thickness. Prior to forming of floor to its design thickness, placed on its self-carrying part is heat and sound-proofing layer. EFFECT: higher efficiency. 2 cl, 1 dwg

Description

 The invention relates to the field of construction and can be used in the construction of ceilings of monolithic buildings using volumetric-permutable (tunnel) and panel formwork.

 Known formwork for the construction of coffered ceilings, consisting of coffered elements and bearing plates. The edges of the caisson elements rest on the racks. After removing the caisson elements, the ceiling continues to rely on the support plates installed on the uprights until the concrete reaches the rated strength [1].

 The closest analogue adopted for the prototype is a device for the erection of structures made of monolithic concrete, designed for simultaneous concreting of side walls and ceilings. The slab formwork is based on the wall formwork panels and on the racks located in the middle part of the molded slab, allowing after the hardening of concrete to remove the slab formwork, leaving the racks in place, if necessary, until the concrete has set the required strength [2].

 The above analogues provide for the formation of overlap over its entire thickness in one technological operation. However, the structural elements of the building during hardening of concrete have unequal formwork strength in time: the formwork of the walls can be removed much earlier than the formwork of the ceiling. In winter, a large (design) floor thickness requires an increased heat consumption for heat treatment. These factors are especially evident when using tunnel formwork, the effectiveness of which depends on the time of its turnover.

 The objective of the invention is to accelerate the turnover of formwork, simplifying the technology of the formation of overlap and heat and sound insulation.

 The essence of the invention consists in installing the formwork of the walls and floors, concreting the walls and floors and the subsequent removal of the formwork with the backing of the molded ceiling on the supports. The overlap is concreted onto the self-supporting part of its thickness, and after gaining the concreted part of the formwork strength, this part of the overlap is resubmitted to temporary supports and the overlap is molded to the design thickness. Before molding the floor to the design thickness, a heat and sound insulating layer can be laid on its self-supporting part.

 When solving the problem there is a technical effect, expressed in the fact that it becomes possible to remove the metal-intensive formwork of the walls and floors, without concreting the ceiling to its entire thickness. The same technological technique allows reducing energy costs for heat treatment of molded parts of the building in the cold season. All this leads to a reduction in the turnover time of the formwork.

 The drawing shows the technology of molding a monolithic overlap.

 The method of constructing the ceiling is as follows: the formwork (not shown) of the walls and floors is put into working position. Formwork can be made in the form of separate panels or assembled into a tunnel - the essence of the method does not change from this. After carrying out all the operations required by the technology (laying reinforcement, installing cross-shaped inserts-beacons, also not shown in the drawing), the walls 1 and the self-supporting lower layer 2 of the floor are concreted. The thickness of this layer is determined by calculation from the condition of maintaining the integrity of this layer in the designed span when concrete is gaining brand strength. Then, after the acquisition of concrete by the walls and the overlapping of the formwork strength (in the cold season, this can be facilitated by the thermal treatment of concrete), the formwork is removed, and the overlapping is repaired by temporary supports 3. Remote formwork enters the next section of the building being constructed, and after of a set of concrete of sufficient strength, further molding of the floor is made over its entire thickness, if necessary, a heat and sound insulation layer 4 is laid and the top layer 5 is concreted. an upper covering layer 5 can be used at concrete strength than self-supporting layer 3.

 Thus, the main forming part of the formwork is necessary only for the initial stage of molding the floor, and all further operations are performed using temporary supports that are removed after the concrete has acquired the lower layer of the floor of the bearing strength.

Claims (2)

 1. METHOD FOR STRUCTURING OVERLAPS OF MONOLITHIC BUILDING, which consists in installing wall formwork and overlapping, concreting walls and overlapping and subsequent removal of formwork with the backing of the molded overlap on the supports, characterized in that the overlap is concreted onto the self-supporting part of its thickness, and after the set is demounted, the concrete is reinforced they reshape this part of the floor to temporary supports and form the floor to the design thickness.  2. The method according to claim 1, characterized in that before forming the overlap to the design thickness, a heat and sound insulating layer is laid on its self-supporting part.

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