Device to strengthen bearing structures

FIELD: construction.

SUBSTANCE: device for strengthening of bearing structures includes a metal shell installed onto a bearing structure and made of vertical angle elements connected to each other by transverse planks, and a spacer device, comprising jacks rested against lower thrust elements as capable of acting at the metal shell in its longitudinal direction via thrust transverse planks rigidly fixed outside on vertical angle elements. The metal shell is stiffly fixed with thrust elements, besides, the device is made as capable of strengthening of the bearing structures area not limited with building structures serving as thrusts, or having a single-sided such limitation. The device is equipped with anchors, with the help of which the upper part of the metal shell and/or the lower thrust elements are fixed to the bearing structure, thrust transverse planks and lower thrust elements are made from angle bar, reinforced with stiffening ribs under jacks, interacting by their upper part with the thrust transverse planks, and at the same time installed directly under the rib of the thrust transverse planks and between ribs of the lower thrust elements, and transverse planks of the metal shell covering the faces of the bearing structure at the side of installation of jacks and thrust transverse planks, are arranged tightly adjacent to the body of the bearing structure.

EFFECT: expanded area of device usage for reinforcement of bearing structures.

2 cl, 6 dwg

 

The invention relates to the field of construction and can be used to enhance load-bearing structures columns, brick piers and columns, and also to reinforce the areas of load-bearing structures, not limited to building structures that are used as refractory elements such as slabs, beams, cantilevers columns.

Known anchoring device for anchoring tense spacers amplification used in the amplification of bearing elements of reinforced concrete structures of buildings containing steel ferrule compression attached to strengthen the structural member tie rods, and thrust tables for commercial screws of the spacers, wherein the clip compression is made of composite brackets with hard edges at the end portions equipped with tie rods, and the inner surface of the brackets are treated to increase the static friction forces (Patent RF №2308582 C2, priority date 03.10.2005, publication date 20.10.2007, the author Il'in N. And. EN).

The disadvantages of the known device are: first, the limited scope of utilization, due to appropriate use to enhance load-bearing elements of reinforced concrete structures of buildings and structures after fire, explosion or accident; secondly, the large consumption of materials due to the fact that after the creation of prestressing in design �become of the bracket clip compression with a spacer device.

It is also known a device used in the known method of strengthening columns, containing mounted on the column metal clip vertical angled elements associated transverse slats, compressed in the longitudinal direction of the spacer device and is rigidly connected to based on the column structures, wherein the spacer device is used, the tensioning screw with a nut mounted on and welded to the clip table and when interacting with compression resistant element, is mounted in the upper part of the shroud (USSR Author's certificate No. 607932, priority date 07.02.1977 summer hockey challenge, publication date 25.05.1978, author V. V. Guselnikov, EN).

The disadvantages of the known device are: first, the limited scope of utilization, due to the use of only columns that are in the upper part of the horizontal support surface for anchoring the resistant elements of the cage, and secondly, the large complexity associated with securing and dismantling of the spacer device, as after the creation of pre-stress in the design of the shroud must be removed and welded table spacer device with resistant screws.

As the prototype accepted device for strengthening of load-bearing structures, comprising mounted on the supporting structure of metal clip compressed in the longitudinal direction of the spacer device and is rigidly connected to the thrust element, the spacer device is formed by the national team head plate fixed to the metal holder, and at least two hydraulic jacks installed in the bottom of the device and interacting top with hinged metal clip team head plate made of two symmetrically arranged supporting bars connected by bolts with the possibility of emphasis in the transverse plate holder and bearing on the said jacks mounted under the bars of the bar, wherein the jacks are supported through the switchgear installed on the bottom layer of mortar resistant elements (patent RF №2442867 C1, priority date 16.08.2010, publication date 20.02.2012, the authors of Andrievskii L. V. and others., RU, prototype).

The disadvantage of the prototype is the limited scope of utilization, due to the use of only the plots of load-bearing structures, located between the two constructions, which resistant elements such as slabs, beams, cantilevers columns, bearing capacity which is sufficient for the perception of effort from the existing loads and the spacer device.

The object of the invention is to expand the field of use of the device to enhance the load-bearing structures by applying it also to reinforce the areas not�previous designs, not limited to construction structures used as resistant elements, such as slabs, beams, cantilevers columns.

To solve the problem in the device to enhance the load-bearing structures, including mounted on a supporting structure with metal clip, made of vertical angled elements connected by cross bars, and spacer device comprising jacks, based on lower thrust elements with the possibility of exposure to the metal clip in its longitudinal direction through the thrust of the transverse plate rigidly mounted on the outside vertical corner elements, wherein the metal clip is rigidly secured to the thrust elements according to the invention the device is made with the possibility of increasing the area of load-bearing structures, not limited to construction structures which stops, or having such a one-sided limit, the device is provided with anchors, by means of which the upper part of the metal sleeve and/or bottom resistant the elements are fixed to the supporting structure, the thrust of the transverse plate and the lower thrust elements are made of an angular profile, reinforced with ribs under the jacks, interacting resistant top with cross straps and �that are installed directly under the rib thrust transverse strips between the ribs and the lower thrust element, a transverse plate metal sleeve covering the faces of the supporting structure by the mounting of jacks and thrust the transverse bars, are located immediately adjacent to the body supporting structure.

According to the invention, in the case of unilateral emphasis metal clips in a building structure as a support can be used or slabs, or beams, columns or console with bearing capacity for the perception of effort of the spacer devices and design loads.

Fig.1 schematically shows a device for strengthening of load-bearing structures, General view; Fig.2 - the same, side view; Fig.3 - section a-A in Fig.1; Fig.4 - section B-B in Fig.1; Fig.5 - cross section b-b In Fig.1; Fig.6 - node 1 in Fig.5.

As an example, the device for strengthening of supporting structures, set on a plot of the supporting structure, not limited to construction structures which stops. The device includes a mounted on the supporting structure 1 metal clip 2, made of vertical angular profile elements 3 connected by cross bars 4, and a spacer device to create a pre-stress in a metal housing containing two screw-locks the efforts of the hydraulic Jack 5, mounted on hinged on carried�General design 1 lower thrust elements 6 with the possibility of emphasis in persistent transverse plate 7, rigidly mounted on the outside vertical corners of the 3 metal clips. The upper part of the metal sleeve 2 and the lower thrust element 6 is fixed to the supporting structure 1 by means of bolts 8. Resistant transverse plate 7 and the lower thrust element 6 is made of an angular profile, reinforced with ribs 9 and withstands jacks 5 which is mounted directly under the rib thrust the transverse bars 7 between the ribs and the lower thrust element 6. To increase friction and improve a compression metal sleeve cross strap 4 metal clips covering the faces of the supporting structure by the mounting of the jacks 5 and thrust the transverse bars 7, are located immediately adjacent to the body of the supporting structure and the other of the transverse plate attached to the vertical corners of the metal clips on the outside.

As one of its fastening metal clips or resistant element can be activated building structures, such as slabs, beams, columns or console, the bearing capacity which will be sufficient for the perception of effort of the spacer device at the time of amplification and effort from the design loads after amplification (not shown).

After installing all the metal clips on carrier 2 �the construction of 1 and fixing it with metal clips and a lower thrust element 6 by means of bolts 8 carry out the compression of the metal sleeve 2 is based on the lower thrust element 6 hydraulic jacks 5, connected to one pumping station and providing equal force of thrust. When reaching a settlement efforts in the vertical jacks metal corners 3 of the holder 2 is rigidly connected by welding with the lower thrust element 6, after which the spacer device is removed for re-use, and the metal ferrule 2 is included in the work.

The advantage of the proposed device is to increase the scope of use in the application due to a more rational design of the thrust element.

1. Device for strengthening of supporting structures, including mounted on a supporting structure with metal clip, made of vertical angled elements connected by cross bars, and spacer device comprising jacks, based on lower thrust elements with the possibility of exposure to the metal clip in its longitudinal direction through the thrust of the transverse plate rigidly mounted on the outside vertical corner elements, wherein the metal clip is rigidly secured to the thrust element, characterized in that the device is made with the possibility of increasing the area of load-bearing structures, not limited to construction structures, which stops, or having such a unilateral constraint, the us�master equipped with anchors, with the help of which the upper part of the metal sleeve and/or bottom resistant the elements are fixed to the supporting structure, the thrust of the transverse plate and the lower thrust elements are made of an angular profile, reinforced with ribs under the jacks, interacting resistant top with cross straps and mounted directly under the rib thrust transverse strips between the ribs and the lower thrust element, and the transverse plate metal sleeve covering the faces of the supporting structure by the mounting of jacks and thrust the transverse bars, are located immediately adjacent to the body supporting structure.

2. Device for strengthening of load-bearing structures according to claim 1, characterized in that the one-sided emphasis metal clips in a building structure as a support can be used or slabs, or beams, columns or console with bearing capacity for the perception of effort of the spacer devices and design loads.



 

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FIELD: construction.

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5 cl, 1 tbl

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5 cl

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17 cl, 2 dwg

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12 cl, 14 cl, 2 ex

FIELD: construction, particularly working measures on existing buildings.

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EFFECT: decreased metal consumption of superstructure skeleton.

9 dwg

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