CZ3982U1 - Load-carrying composite spatial frame - Google Patents

Description

Supporting composite spatial frame

Technical field

The technical solution relates to the supporting composite spatial frame of civil, residential, technological and industrial buildings, which form the basic supporting system of these buildings and solve the requirement of fast assembly without the use of formwork with optimally low material consumption.

BACKGROUND OF THE INVENTION

Steel-concrete skeletons of steel rolled or welded profile bars and concrete or reinforced concrete have been manufactured so far by assembling the steel supporting structure of columns from rigid rolled or welded profiles with reinforcement reinforcement and by means of shuttering to concrete the resulting reinforced concrete profile with rigid reinforcement.

The disadvantage is that the load-bearing rungs are not optimized in shape and do not allow composite action, which results in a significantly higher consumption of steel material and concrete.

A further disadvantage of these steel-concrete skeletons is that when using reinforced concrete ceilings with formwork or filigran panels, they have to use floor standing, which is dependent on achieving the strength of the concrete of the lower ceiling. All this significantly reduces the speed of assembly.

The essence of the technical solution

These drawbacks are largely eliminated by the structural composite spatial frame of buildings, consisting of hollow steel load-bearing columns filled with concrete according to the present invention, characterized in that load-bearing rungs are attached to the steel load-bearing columns whose free opposite ends are fixed to each other using internal rungs. Both the end bars and the inner bars are provided at the top of their profile wall with openings for the connecting reinforcing bars.

For quick assembly where the ceiling support is independent of the strength of the lower-level concrete, it is necessary to support the support beams on the inner rungs, which support their lower ends at the point of contact between the end rungs and the lower-floor supporting columns.

The advantage of the supporting composite spatial frame is that it allows the construction of the skeletons of buildings without the use of formwork columns and ceilings and at the same time allows the permanent interaction of steel profiles and reinforced concrete in the composite sense. steel in the design of rolled or welded profiles increases the strength properties of the second material, ie concrete and vice versa. It is also an advantage that the geometrical design of the composite frame and the supporting elements, columns and rungs allows for optimally low material consumption and at the same time fast assembly without the use of formwork.

-1GB 3982 U

Overview of the drawings

The technical solution is explained in more detail with the help of drawings, in which Fig. 1 is a plan view of the spatial frame, Fig. 2 is a vertical section of the frame, Fig. 3 is a horizontal section of the supporting column, and Fig. 4 is a vertical cross-section.

Example of technical solution

The supporting composite spatial frame consists of hollow steel supporting columns 1, filled with concrete. To these supporting columns 1 are attached end rungs 3, whose free opposite ends are fixed to each other by means of inner rungs 4. Both end rungs 3 and inner rungs 4 are provided at the top of their profile wall with holes 5 for connecting reinforcing bars 6. The cross-sections of the rungs 3, 4 have the shape of an unsymmetrical letter I with a narrower upper flange.

For supporting the columns with independence of mounting supports and girders to achieve strength in concrete of lower-level ceiling, mounting supports 7 are used, which are supported by their lower ends at the point of contact of end bars 3 with supporting columns 1 and their upper ends supported on inner bars 4.

Cross-sections 2 and? 4 in their shape, they allow the panels to be mounted in the mounting stage from the top and at the same time allow the anchoring of the mounting support columns 7, thereby making these mounting columns 7 and mounting dies independent of the strength of the lower-floor ceiling concrete. Coupling reinforcing bars 6 provide the composite composite effect of the reinforced concrete ceilings with the internal rungs 4 and the end bars 2, while ensuring the continuity of the slabs of the individual fields of the ceilings, thereby simultaneously achieving mutually static action of the skeletons with the ceilings.

The length of the end rungs 2 b ^e such that its connection with the inner rung 4 is in places where there are almost no bending moments rungs 2 and 4.

Claims (2)

PROTECTION REQUIREMENTS A load-bearing composite spatial frame of buildings consisting of hollow steel load-bearing columns filled with concrete, characterized in that end bars (3) are attached to the steel load-bearing columns (1), whose free opposite ends are rigidly connected to each other by internal rungs ( 4), wherein both the end bars (3) and the inner bars (4) are provided at the top of their profile wall with holes (5) for the coupling reinforcing bars (6). Supporting composite spatial frame of buildings according to claim 1, characterized in that mounting support columns (7) are supported on the inner rung (4), which are supported by their lower ends at the point of contact of the end rungs (3) and supporting columns (1). ).