SU1689570A1 - Multi-storey earthquake-resistant structure - Google Patents

Description

The invention relates to multi-story seismic buildings. The purpose of the invention is to improve the reliability and reduce the complexity of installation. Multi-storey columns are installed in the plan, and the walls of the beam - floor by step in staggered order. The prestressed reinforcement is placed in the gaps between the floor slabs, passed through the openings of the columns and loopbacks of the lower faces of the wall beams, monolithic concrete and ananker along the building perimeter. The beams-walls of each floor are offset by half the column pitch relative to the beams-walls of the floors adjacent to it. 4 il.

The invention relates to the construction and can be used in the construction of multi-storey earthquake-resistant buildings of the frame system with long-span cells and reinforcement strained in construction conditions.

The purpose of the invention is to improve the reliability and reduce the complexity of installation.

FIG. 1 shows the building in plan (the dotted hatching shows the arrangement of the elements of the frame of the underlying floor); in fig. 2 is a section A-A in FIG. one; in fig. 3 shows the node I in FIG. one; in fig. 4 is a section BB in FIG. 3

A multistory seismic resistant building contains prefabricated multistory columns 1 with openings 2 in mutually perpendicular directions in the level of floors 3, which have cut-outs in the corners 4 for

skips of columns 1 and installed with a gap of 5 among themselves, side elements 6 installed in the level of floors 3 along the perimeter of the building, and prestressed reinforcement 7 located in the gaps 5 between the plates 8 of floors 3, passed through holes 2 of columns 1 embedded in concrete 9 and zankerennuyu on the building's girimeter.

The building is equipped with beams-walls 10, made high on the floor with reinforcing loopbacks 11 along the lower and one of the side faces and installed on each floor with an offset relative to the beams-walls 12 of the floor below the half-pitch of the columns 1, and the latter are installed in the plan in the staggered okay

Pre-stressed reinforcement 7 is omitted in loopbacks 11 niz5Ts .. ,, 1689570A1

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of the faces of the beams-walls 10. The edges of the beams 10 are made with keyed recesses 13 to improve the reliability of the joints of prefabricated monolithic elements. The gaps 14 between the plates, which are outside the axes of the columns 1, are embedded in concrete 9 without the laying of pre-stressed reinforcement 7.

Beams-walls 10 and slabs 8 floors 3 in spans are interconnected by reinforcing releases.

The sequence of installation of building structures is as follows.

Install the columns 1 and the beams-walls 10 of the first floor, then the plates 8 of the floors 3 and the side elements 6 are mounted on temporary mounting tables, which are fixed on the columns 1, and on the beams-walls 10 or on the inventory metal racks. Then, the gaps 5 between the overlapping plates 8 and the columns 1 are filled with fine-grained concrete 9, after curing which is pulled through the holes 2 in the columns 1 at the level of the overlap design 3 and in the gaps 5 between the adjacent overlap plates 8 and the onboard elements 6 high-strength reinforcement 7 in the form of ropes of class K-7, they produce the tension of the reinforcement 7. Next, the block-walls 10 of the next floor are installed, after which the gaps 14 between the floor slabs 8 and between the floor slabs 8 and the side elements 6 are placed into concrete 9 embedment. Then remove the temporary mounting tables and racks. Similarly, make the installation of the following floors.

The prefabricated frame of a multistory building in adjacent floors between columns 1 has prefabricated monolithic beams-walls of 10 I-sections with prestressed belts. The role of the belts perform slab 8 overlap 3 with zamololichnymi gaps 5.

Beams-walls 10 are arranged in all floors of the building and are staggered in each structural cell in a staggered manner on columns 1 according to a cruciform or T-shaped pattern, with beams-walls 10 in adjacent floors shifted in the building plan by half the distance between the columns 1. В

As a result, for the overlap of the span, the length or width of which I cells of one floor are used, plates 8 of overlap 3 with a length of 0.5E are supported on beams-walls 12 in adjacent floors or in the lower or upper part. At the same time, the reduction in the calculated span of the overlap 3 is two times that of the possibility of drastically reducing the consumption of concrete and steel by reducing the bending moments from the vertical load.

Simplification of construction installation work is ensured by the fact that instead of labor-intensive welded joints of the building structure (columns 1, beams-walls 10,12 and floors 3) and long elements use a simple method of tightening structures by tensioning the reinforcement 7 and standard plates 8 floors 3 This friction force between columns 1 and plates 8 floors 3 and beams-walls 10 provide a reliable connection structures, which is especially important for buildings erected in seismic areas,

Claims (1)

Claim Multi-storey earthquake-resistant building, including prefabricated multi-storey columns with holes in mutually perpendicular directions in the floor level, floor slabs with cutouts at the corners for passing columns installed with a gap between them, side elements in the floor level around the perimeter of the building and pre-stressed reinforcement, located in the gaps between the floor slabs, passed through the openings of the columns, embedded in concrete and anchored around the perimeter of the building, characterized in that, in order to increase the reliability to reduce the labor intensity of installation, the building is equipped with beams-walls, made with reinforcing loopbacks on the bottom and one of the side faces and installed on each floor with an offset from the walls-beams of the underlying floor by half a pitch of columns, which are staggered in plan, and the prestressed reinforcement is missed in loopback outlets of the lower edges of the baloxy walls. 1689570 figure 1 35 Aa 1 10 fi g 2 ten 1689570 fig.Z b- & Phi g A