SU907186A1 - Framework dome ceiling - Google Patents

Description

(54) FRAME TILT COVER

one

The invention relates to building structures and can be used for ceilings in industrial and civil buildings and structures.

Known tent overlaps, including contour beams located within the building height of the overlap, rigidly connected to the columns, inclined and horizontal slabs of the tent, as well as plates of overlapping hollows, Qparayushis on the tent and contour beams 1.

The disadvantages of this design are the need to use a special installation of the conductor for assembling the hip section, the installation time determined by the hardening time of the concrete for the monolithic joints, the complex junction of elements, especially at the junction of the central disk plates, inclined edges and flooring under the hollows and increased material consumption due to the underutilization of the load-bearing capacity of the plates of inclined faces, since the forces from the load applied to the tent are transmitted to the columns But through inclined diagonal ribs, and the stretching forces from the thrust are perceived by the contour beams, while the main part of the floor of the inclined plates undergoes little effort.

The closest technical solution to the invention is a frame-hip

 the overlap, including contour beams supported on the columns and the frames forming the tent, with plates of the casing strip and plates of the central disk placed on them. The frame serves as a support for the plates of the central disk and the overlapping plates of the columned strip 2.

The disadvantages of such structures is the difficulty of mounting inclined frames, which can only be carried out with the help of a special conductor. In order to form a closed loop stretched under the action of the thrust, the mating of adjacent frames on the columns requires powerful assembly connections. Significant difficulties are caused by the arrangement of slabs of overlap of the 20th column of the strip, especially near the columns. Due to the low flexural rigidity of the support sections of tent frames, such overlaps do not provide the required spatial rigidity of the frame frames of multi-storey buildings.

The purpose of the invention is to reduce material consumption, simplify installation and the inclusion of overlaps in the spatial work of the framework of the entire building.

The goal is achieved by the fact that in the frame-tent ceiling, including contour beams supported on columns and frames forming the tent, with trapezoidal pavement plates and central disk plates placed on them, the frames are mounted vertically in diagonal directions and are connected in level with contour beams, with the outline of the skater on the underside of the frame, and each central disk plate is made of four triangular elements.

Tsa FIG. 1 shows a fragment of the frame-shatrovy overlap in the form of a single corner cell; in fig. 2 - frame frame (without flooring plates); in fig. 3 is a section A-A in FIG. one; in fig. 4 shows a section BB in FIG. one.

The frame-shatrovy ceiling cell consists of columns 1, contour beams 2 supported on them and diagonally arranged cross-frames 3 on which pgits of the central disk 4 and flooring strip 5 are laid.

The contour beams 2 are located within the building height of the ceiling and are supported at the ends of the columns 1. To perceive the spread, the contour beams are interconnected and form a closed contour. The diagonal cross-frames 3 are set so that each of them is supported on column I and rests on a closed contour formed by contour beams 2. The cross-frames 3 are supported by the triangular elements of the central disk plates 4, and the pillar strips are covered with trapezoidal plates 5. The long bases of the trapeziums the plates 5 are supported on the contour beams 2, and the opposite short sides on the cross-frames 3. To ensure the joint work of the floor plates with the tent frame, their mating along the perimeter of the support can be performed with the help of a monolithic concrete keyway.

The operation of the structural elements under the action of a vertical load is characterized as follows:

The cross-frames, together with the plates of the central disk, are subjected to compression with bending, and spreading is transmitted to the support nodes on the columns, which is perceived by contour beams. In addition to the tensile stresses caused by thrust, the contour beams, together with the trapezoidal slabs of the pillar strip, experience bending from a part of the load located on the floor, and in addition, due to the deformation of the frame frame of the entire building, additional bending by nodal moments. The cross-frames, which determine the operation of the overlap according to the hip scheme, are arranged vertically. This simplifies the installation of the entire ceiling, since instead of the conductor it is sufficient to use a light central stand, which can be removed immediately after connecting the cross-frames to each other at the intersection point.

Transmission of compressive force through the inclined elements of the cross-frames in the nodes

the mating of the contour beams with the columns makes the static scheme of the overlapping work more distinct, which makes it possible to more fully use the bearing capacity of the elements. The cutting of the floor slabs and their support are made so that most of the load,

0 located on the floor, is transmitted to the columns through contour beams and cross-frames without causing spreading, as a result of which the connection of contour beams to each other is simplified.

All structural elements work together under load, which makes it possible to reduce their cross sections without sacrificing strength and thereby achieve substantial material savings and use the structure for increased loads.

Claims (2)

1. USSR author's certificate number 506689, cl. E 04 B 5/00, 1974. 2. Cherikover L. Precast concrete Q in multi-storey buildings. Draft and standard Number 9, 1933, p. 12. well d Fig.Z /