RU2285772C1 - Composite floor panel for skeleton-type building (variants) - Google Patents

Abstract

FIELD: building, particularly to erect, renew or reconstruct residential, public and office buildings and building structures.

SUBSTANCE: in accordance with the first embodiment composite floor panel comprises composite girders connected to columns so that monolithic connection is created. At least one girder has lower part preferably formed as widened composite flange, which defines one or two side cantilevered members extending along length thereof after upper monolithic girder part forming. The cantilevered members are adapted to support ends and/or side faces of floor panel. At least one girder has upper monolithic part including wall and upper widened flange in cross-section. The flange is provided with one or two mating cantilevered members, which are grouted to at least one floor panel supported by the girder. Composite part mounted in floor panel is pre-stressed and preferably made as lower girder flange provided with longitudinal and transversal reinforcing bar projections. Transversal reinforcing bar projections are arranged in at least span girder part and composed of clamps or rod system grouted in lower, composite, girder part during lower girder part forming. Transversal reinforcing bar projection tops are joined to each other by means of at least one reinforcing lattice so that transversal reinforcing bar projections extend above upper parts of floor panels supported by girder at least in connection area between girder and column extending for length of at least 1/3 of girder span.

EFFECT: improved building frame parts cooperation, increased reliability, strength and spatial rigidity of building frame due to building frame forming with the use of composite girder and due to girder, column and floor panel union in single three-dimensional structure during building erection, decreased labor inputs and costs, reduced building erection time and possibility to perform works in winter at negative ambient air temperatures.

11 cl, 15 dwg

Description

The invention relates to the field of construction and can be used in the construction of residential, public and administrative buildings and structures, as well as in their restoration or reconstruction.

Various constructions of prefabricated monolithic floors of buildings are known, including knots of joints of floor slabs with crossbars of a building frame, structures (see, for example, RU 2107783 C1, 03/27/1998, E 04 B 1/35, Fig.25-28).

Known prefabricated-monolithic floors of buildings, including a building flooring unit, containing a crossbar with plates supporting it, interconnected by reinforcing bars, the upper part of the crossbar at the place of support of the plates (see RU 903502 C1, 02/07/1982, E 04 B 5/02 )

The disadvantages of the known structures of the joints of the floor slabs with the crossbars of the building frame, structures are significant labor and material costs, significant time for work and the inability to carry them out regardless of weather conditions, especially in regions related to harsh climatic zones with low negative temperatures in winter .

-образного несущего профиля с локальными уширениями в виде выступов (RU 2198267 С1, 10.02.2003, Е 04 В 1/20, E 04 B 5/16).It is also known from the prior art that a prefabricated monolithic overlapping of a frame building, containing frame crossbars supported on columns and hollow floor slabs, is made of prefabricated monolithic in the form of spatial bodies with a prefabricated lower broadened part and a monolithic narrowed relatively lower upper part in the form of an extended polyhedron with cross-section, mainly in the form of a rectangle, quasi-rectangle, trapezoid or quasi-trapezoid with the formation in conjunction with the prefabricated part of a single

-shaped bearing profile with local broadening in the form of protrusions (RU 2198267 C1, 02/10/2003, E 04 B 1/20, E 04 B 5/16).

The objective of the present invention in terms of both variants of the invention is to improve the joint work of the frame structures, increase the reliability and spatial rigidity and strength while reducing labor and material costs, the timing of the construction of the frame. The problem is solved due to the fact that the prefabricated monolithic overlapping of the frame building according to the invention includes monolithically connected with the columns of the frame, prefabricated monolithic crossbars, at least one of which is made with the lower part mainly in the form of a broadened prefabricated shelf, forming at least after performing the monolithic upper part of the crossbar, one or two lateral cantilever overhangs along the length for supporting the floor slabs with their ends and / or side faces and the upper monolithic part, containing in cross section, the wall and the upper broadened shelf with one or two mating lower overhangs, monolithic to at least one floor slab supported on the crossbar, as well as floor slabs supported on the crossbars, while the assembled part mounted in the ceiling is pre-stressed mainly in the form of the lower flange of the crossbar with the releases of longitudinal and transverse reinforcement, and the outlets of the transverse reinforcement are installed at least in the span of the crossbar and are made up of clamps or a rod system it, monolithic in the lower assembly part of the crossbar during its manufacturing and joined on top by at least one reinforcing mesh, and brought out by peaks above the upper part of the floor slabs supported on the crossbar, at least in the zone where the crossbar adjoins the column for at least one third span of a crossbar.

The prefabricated part of the crossbar can be reinforced with at least two prestressed elements extended along its length, made in the form of prestressed rods or a group of rods or strands, while the ends of the prestressed reinforcement elements are brought out into the keyway formed in the side zone of the crossbar, and at least at least at one end of the crossbar, in the area adjacent to the column, the ends of the prestressed reinforcement elements are bent mainly upward, for example, at an angle close to 90 ° to the axis of the element .

The prefabricated part of the crossbars can be made predominantly by bench technology, for example, by simultaneously manufacturing parallel to the group of crossbars installed on a complex stand, containing at least two, preferably four, crossbars in one technological group.

The columns of the frame can be made not less than two floors long and, at least by one end, lead to a prefabricated-monolithic overlap or partially led into it with subsequent concrete coating, and in the intermediate overlap zone, leaving an open section of the column reinforcement for subsequent monolithic zone of the junction of the frame.

The width of the reinforcing mesh, combining on top the outlets of the longitudinal and transverse reinforcement of the prestressed crossbar, is preferably made exceeding the width of the crossbar wall.

The problem in part of the second variant of prefabricated-monolithic overlapping of the frame building is solved due to the fact that it includes floor slabs supported on prefabricated-monolithic prestressed crossbars, monolithically connected to the columns of the frame, and at least one of the crossbars is made from the bottom part mainly in the form of a broadened prestressed prefabricated shelf, forming, at least after the execution of the monolithic upper part of the crossbar, one or two lateral cantilever overhangs supporting on them the floor slabs with the ends and / or side faces, and the upper monolithic part containing in cross section a wall and an upper broadened shelf with one or two reciprocal lower overhangs, monolithic to at least one floor slab supported on the crossbar.

At the same time, the upper monolithic part can be monolithic with the longitudinal and transverse reinforcement outlets installed, at least in the span of the crossbar and consisting of clamps and / or a system of rods, monolithic in the lower assembly of the crossbar during its manufacture and joined at least no less than one reinforcing mesh, with at least a part of the outlets peaks raised above the upper part of the floor slabs supported on the crossbar, at least in the area where the crossbar adjoins the column for at least one third of the span crossbar.

The prefabricated part of the crossbar can be reinforced with at least two prestressed elements extended along its length, made in the form of prestressed rods or a group of rods or strands, while the ends of the prestressed reinforcement elements are brought out into the keyway formed in the side zone of the crossbar, and at least at least at one end of the crossbar, in the area adjacent to the column, the ends of the prestressed reinforcement elements are bent mainly upward, for example, at an angle close to 90 ° to the axis of the element .

The prefabricated part of the crossbars can be made predominantly by bench technology, for example, by simultaneously manufacturing parallel to the group of crossbars installed on a complex stand, containing at least two, preferably four, crossbars in one technological group.

The columns of the frame can be made not less than two floors long and, at least by one end, lead to a prefabricated-monolithic overlap or partially led into it with subsequent concrete coating, and in the intermediate overlap zone, leaving an open section of the column reinforcement for subsequent monolithic zone of the junction of the frame.

The width of the reinforcing mesh, combining on top the outlets of the longitudinal and transverse reinforcement of the prestressed crossbar, is preferably made exceeding the width of the crossbar wall.

The technical result provided by the given set of essential features of both options is to improve the joint work of the frame structures, increase the reliability and spatial rigidity and strength of the building frame by performing it using a precast-monolithic element of the crossbar and monolithic crossbars, columns and floor slabs into a single spatial construction during the construction of the building while reducing labor and material costs, reducing the time of work and ensuring enii their feasibility in all weather conditions, including low temperatures below zero in the winter.

The invention is illustrated by drawings, where

figure 1 is conventionally depicted a frame building, side view;

figure 2 is the same in plan;

figure 3 - node a in figure 2;

figure 4 - node B in figure 2;

figure 5 - node connection of floor slabs with end faces with a crossbar (in section);

in Fig.6 is the same as in Fig.5, a variant of monopolizing the upper part of the crossbar with the voids of the floor slabs;

in Fig.7 - the connection node of the floor slabs with the butt ends with the crossbar (in the context) - an option of reinforcing the frame, the upper monolithic part of the crossbar is made in the form of an extended polyhedron of trapezoidal shape and a shelf from above;

in Fig.8 - the connection node of the floor slab end face with the crossbar (in the context);

in Fig.9-12 - embodiments of the lower assembly of the crossbar;

in Fig.13 - the prefabricated part of the bolt in the plan;

Fig.14 is the same side view;

on Fig - scheme of reinforcing the prefabricated part of the crossbar (fragment).

Precast monolithic overlap 1 of the frame building includes monolithic crossbars 4, monolithically connected to the columns 2 of the frame 3, six of which are made with the lower part 5 in the form of a widened prefabricated shelf, which, after the execution of the monolithic upper part of the crossbar 4, forms one or two lateral lengths cantilever overhangs 6 for supporting on them slabs 7 of overlap 1 with ends 8 or side faces (not shown in the drawings) and the upper monolithic part 9, containing in cross section wall 10 and upper broadened shelf 11 with one or two holes solid lower overhangs 12, monolithic to the slabs 7 of floor 1 supported on the crossbar 4, as well as the slabs 7 of floor 1 supported on the crossbar 4.

Mounted in the overlap 1, the assembly part 5 is pre-stressed mainly in the form of a lower flange 13 of the crossbar 4 with outlets of the longitudinal 14 and transverse 15 reinforcement, and the outlets of the transverse reinforcement 15 are installed at least in the span 16 of the crossbar 4 and are made up of clamps 17 or the system of rods 18, monolithic in the lower assembly part 5 of the crossbar 4 in the process of its manufacture and connected on top of the reinforcing mesh 19, and brought out by peaks above the upper part of the slabs 7 supported on the crossbar 7 in the adjoining zone crossbar 4 to the column 2 at a length of not less than one third of the span of the crossbar.

The prefabricated part 5 of the crossbar 4 is reinforced with four pre-stressed elements 20 extended along its length, which are part of the longitudinal reinforcement 14 of the crossbar. Pre-stressed elements 20 are made in the form of prestressed rods or a group of rods or strands. At the same time, the ends of the prestressed reinforcing elements 20 are brought out into the keyway 22 formed in the side zone 21 of the crossbar 4, and at the ends of the crossbar, in the adjoining zone to the column, the ends of the prestressed reinforcement elements 20 are bent mainly upward at an angle close to 90 ° to the axis (not shown) elements of the crossbar.

The prefabricated part 5 of the crossbars 4 is mainly made using bench technology (not shown in the drawings), for example, by simultaneously manufacturing parallel to the group of crossbars installed on a complex stand (not shown in the drawings) containing at least two, preferably four, crossbars in one technological group.

Columns 2 of frame 3 are two floors long and at least one end is led to a prefabricated-monolithic overlap 1 or partially inserted into it with subsequent concrete coating, and in the intermediate overlap zone, leaving an open area 23 of the column reinforcement for subsequent monolithic zone junction of the frame.

The width of the reinforcing mesh 19, uniting on top the outlets of the longitudinal 14 and transverse reinforcement 15 of the prestressed crossbar, is preferably made exceeding the width of the crossbar wall.

The second embodiment of the precast-monolithic ceiling of the frame building is illustrated by the same drawings using the same positions.

Claims (11)

1. Prefabricated monolithic overlapping of the frame building, characterized in that it includes monolithic monolithic bolts connected to the columns of the frame, at least one of which is made with the lower part mainly in the form of a widened prefabricated shelf, forming at least after performing a monolithic upper part of the crossbar one or two lateral overhanging cantilever overhangs for supporting the floor slabs with their ends and / or side faces and the upper monolithic part containing a wall and a vertical cross section a broadened shelf with one or two reciprocal lower overhangs, monolithic to at least one floor slab supported on a crossbar, as well as floor slabs supported on a crossbar, while the assembled part mounted in the ceiling is pre-stressed mainly in the form of a lower crossbar shelf with releases of longitudinal and transverse reinforcement, and outputs of transverse reinforcement are installed at least in the span of the crossbar and are made up of clamps or a system of rods monolithic in the lower assembly part deadbolt during its manufacture and pooled on top of at least one reinforcing mesh vertices and withdrawn above the top of the simply supported on bolt plates overlap, at least in the zone of adjacency crossbar to the column over a length of at least one third passage of bolts. 2. The precast-monolithic overlap according to claim 1, characterized in that the prefabricated part of the crossbar is reinforced with at least two pre-stressed elements extended along its length, made in the form of prestressed rods or a group of rods or strands, while the ends of the prestressed reinforcement elements are brought out the ends of the prestressed reinforcing elements are predominantly bent into the keyway hollow formed in the frontal zone of the crossbar, and at least at one end of the crossbar, in the area adjacent to the column For example, at an angle close to 90 ° to the element axis. 3. The prefabricated monolithic floor according to claim 1, characterized in that the prefabricated part of the crossbars is made predominantly by bench technology, for example, by simultaneously manufacturing parallel to the group of crossbars installed on a complex stand, containing at least two, preferably four, crossbars in one technological group . 4. Precast-monolithic flooring according to claim 1, characterized in that the columns of the frame are made not less than two floors long and with at least one end are led to the prefabricated-monolithic flooring or partially inserted into it with subsequent concrete coating, and in the intermediate overlap zone is made with leaving an open section of the column reinforcement for subsequent monolithic zone of the frame joint. 5. The precast-monolithic overlap according to claim 1, characterized in that the width of the reinforcing mesh, combining on top the outlets of the longitudinal and transverse reinforcement of the prestressed crossbar, is preferably made exceeding the width of the crossbar wall. 6. Prefabricated monolithic overlapping of the frame building, characterized in that it includes floor slabs supported on prefabricated monolithic prestressed crossbars, monolithically connected to the columns of the frame, and at least one of the crossbars is made with the lower part mainly in the form of a broadened pre-stressed prefabricated shelf, forming, at least after the execution of the monolithic upper part of the crossbar, one or two lateral cantilevered overhangs along the length for supporting the floor slabs on them with ends and / and and lateral faces, and the upper part of a monolithic, comprising, in cross-section and a top wall shelf broadened with one or two lower counter overhangs primonolichennymi at least one bolt is simply supported on the plate slab. 7. The precast-monolithic overlap according to claim 6, characterized in that the upper monolithic part is monolithic with longitudinal and transverse reinforcement outlets installed at least in the span of the crossbar and consisting of clamps and / or a system of rods monolithic in the lower assembly part of the crossbar during its manufacture and joined on top by at least one reinforcing mesh, with at least a part of the outlets peaks raised above the upper part of the floor slabs supported on the crossbar, at least in the area where the crossbar adjoins the stake not at least one third of the span of the crossbar. 8. The precast-monolithic overlap according to claim 6, characterized in that the precast part of the crossbar is reinforced with at least two pre-stressed elements extended along its length, made in the form of prestressed rods or a group of rods or strands, while the ends of the prestressed reinforcement elements are brought out the ends of the prestressed reinforcing elements are predominantly bent into the keyway hollow formed in the frontal zone of the crossbar, and at least at one end of the crossbar, in the area adjacent to the column For example, angle / close to 90 ° to the element axis. 9. The prefabricated monolithic overlap according to claim 6, characterized in that the prefabricated part of the crossbars is made mainly using bench technology, for example, by simultaneously manufacturing parallel to the group of crossbars installed on a complex stand containing at least two, preferably four, crossbars in one technological group . 10. Precast-monolithic flooring according to claim 6, characterized in that the columns of the frame are made of at least two floors and at least one end are led to the prefabricated-monolithic flooring or partially inserted into it, followed by concrete coating, and the intermediate overlap zone is made with leaving an open section of the column reinforcement for subsequent monolithic zone of the frame joint. 11. The precast-monolithic overlap according to claim 7, characterized in that the width of the reinforcing mesh, combining on top the outlets of the longitudinal and transverse reinforcement of the prestressed crossbar, is preferably made exceeding the width of the crossbar wall.

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