Reinforcement device for load-carrying structures

FIELD: construction.

SUBSTANCE: reinforcement device for load-carrying structures includes a metal frame installed on the load-carrying structure and made of vertical angled elements connected to each other with transverse planks, and a hold-down device having a possibility of acting on the metal frame in its longitudinal direction. The metal frame is rigidly attached to thrust members; the hold-down device is formed with a supporting structure and at least two hydraulic jacks installed in the lower part of the reinforcement device and interacting with the upper part to the supporting structure installed so that it can be borne against transverse support planks of the metal frame and supported from the above jacks. The jacks are supported through distributing devices from lower thrust angles installed on a mortar layer; with that, the supporting structure of the hold-down device is made in the form of at least two steel thrust members symmetrically adjacent to the load-carrying structure. A steel thrust member includes a flange of a U-shaped cross-section, which is provided with a wall exceeding the flange height and with ribs located in a T-shaped manner on the flange, by means of one of which with the wall part projecting above the flange there formed is a mating slot for the transverse support plank of the metal frame. The wall is located in a gap between the load-carrying structure and the transverse support plank, and under the second rib there located is a jack transmitting the thrust force through the steel thrust member and the transverse support plank to the metal frame.

EFFECT: reduction of material consumption.

4 cl, 4 dwg

 

The invention relates to the field of construction and can be used to enhance load-bearing structures of columns, piers and brick pillars.

A device for strengthening reinforced concrete columns, comprising a prestressed metal clip with straining device connected to pads-plates, framing the cantilever portion of the column, straining device made in the form of the upper movable and connected with the upper part of the metal sleeve lower fixed frames columns, connected by a spacer device, wherein the stationary frame is pivotally connected with pads-plates by means of struts, and a movable frame pivotally connected to the struts by means of rods (USSR Author's certificate No. 1399435, priority date 15.10.1985, publication date 30.05.1988, the authors of Bush I. F. and B. A. Garagash, EN).

A disadvantage of the known device is limited in scope, due to the use of it for strengthening of columns with caps or with console parts, and high material consumption.

A device for amplification of compressed reinforced concrete elements, mainly columns operated buildings containing reinforcing space frame with pre-stressed by means of the clamping propose�ing compressed reinforcing elements, in this case the reinforcing frame is formed U-shaped polyermase compressed reinforcing elements are made of a flexible rod, and a clamping device made in the form of hinged removable panels with rails for fixing of reinforcing bars (USSR Author's certificate No. 1189975, priority date 03.02.1984, publication date 07.11.1985, the authors V. F. Zakharov, etc., EN).

The disadvantages of the known devices are limited in scope, mainly for columns, and increased labor costs in the strengthening of columns associated with the use of hinged removable shields for pressing the reinforcing elements of the spatial framework to the column, and with the fixation of the reinforcing Polukarov by welding.

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. 60932, priority date 07.02.1977 summer hockey challenge, publication date 25.05.1978, author V. V. Guselnikov, EN).

The disadvantages of the known devices are, first, the limited scope of utilization, due to the use of only columns that are in the upper part of the horizontal bearing surface for thrust elements clips, secondly, the high complexity associated with securing and dismantling of the spacer device, as well as a large consumption of materials due to the fact that after the creation of pre-stress in the design of the shroud remains welded table spacer device.

As the prototype accepted device for strengthening of supporting structures, including mounted on a supporting structure with 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, set�pour under the bars of the bar, 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 high complexity of installation of the spacer device when hanging on a holder heavy enough team traverses and tightening of bolted connections, as well as a large consumption of materials of construction due to the significant weight of the traverse.

The object of the invention is to reduce the complexity in the application of the device and reducing the consumption of materials due to a more rational design of the spacer device, in particular the device for transmitting the load from the Jack to the metal clip.

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, made with possibility of impact on the metal clip in its longitudinal direction, wherein the metal clip is rigidly coupled to the thrust element, the spacer device is formed by a support structure and at least two hydraulic jacks, set�pour it in the bottom of the device for amplifying and interactive upper part with a support structure, installed with the possibility of emphasis in supporting cross straps with metal clips and a bearing for the said jacks, the jacks are supported through the switchgear installed on the bottom layer of mortar resistant corners, according to the invention the supporting structure of the spacer device made in the form of at least two steel resistant elements, symmetrically attached to the supporting structure, with steel resistant element contains a shelf U-shaped cross-section, is provided with a wall exceeding the height of the shelf, and ribs disposed T-shaped on the shelf, one of which extending over the shelf part of the wall formed by the return groove of the supporting cross bar metal clips, the wall is located in the gap between the supporting structure and the supporting cross bar and under the second rib is the Jack that transmits the force of the thrust through the steel resistant element and the transverse support bar metal holder.

According to the invention the supporting cross strap metal clips, which is a focus for steel resistant elements when transferring from them loads, made thick and is welded around the perimeter of the joint to the vertical corner element.

According to the invention resistant steel element for fixing it to the supporting crossarm �nebgen spring clamp with swivel holder.

According to the invention, a device for reinforcement of load-bearing structures, having at the top of the console with inclined faces, a vertical corner elements in the upper part of the metal clips are made with a bent part.

Fig. 1 schematically shows a device for strengthening of load-bearing structures, General view; Fig.2 - steel thrust element spacer device; Fig. 3 - resistant steel element with a spring clamp and swivel holder; Fig.4 - shows schematically a device for reinforcement of load-bearing structures having a console with inclined faces, a General view.

Device for strengthening of supporting structures contains mounted on the column 1 metal clip, made of the vertical corners 2 connected by cross bars 3, and a spacer device to create a pre-stress in a metal holder (Fig. 1). The spacer device includes at least two hydraulic Jack 4 is mounted in the lower part of the device and symmetrically attached on opposite sides to the column 1 resistant steel elements 5, which is a support structure that interacts with a metal clip. While resistant steel elements 5 are mounted with the possibility of emphasis in the transverse plate of the cage and leaning on hydraulic jacks 4, sleep�by the latches efforts. Each steel resistant element 5 includes a shelf U-shaped section 6, a reinforced wall 7, exceeding the height of the shelves, and ribs 8, 9, arranged in T-shape on the shelf 6 (Fig. 2). Rib 8 extending over the shelf part of the wall 7 is formed by a reciprocal groove under the base of the transverse bar 10 metal clips. The wall 7 is located in the gap between the column 1 and the supporting cross-bar 10, and a reinforcing rib 9 is the Jack 4, the load is transferred through the steel resistant element 5 and the supporting cross-bar 10 a metal holder. The 4 jacks that are installed under the ribs 9 of the thrust elements 5 supported through the distribution device 11 on the lower thrust parts 12, which are mounted in front of the compression on the layer of cement-sand mortar 13. Supporting transverse plate 10 metal clips, which transmit the load from the steel resistant element 5 on a holder made if necessary thickened and with complete penetration at the site of attachment to the vertical corner 2. If necessary, the implementation position of the steel thrust on the supporting element 5 crossarm 10 calls for the installation therein of a spring retainer 14 with a rotary holder 15 (Fig. 3). In case of strengthening of a column having a console with sloped edges, and vertical corners 2 in the area framing the console perform a bent portion� 16, as shown in Fig. 4.

After mounting on a column 1 metal clips, installation and fixing of spacer devices to perform the compression of the metal sleeve of the hydraulic jacks 5, connected to one pumping station and providing equal force of the thrust transmitted through the steel resistant elements 5 a metal holder. When reaching the rated force, the vertical corners of the 2 metal clips rigidly connected by welding with hard corners 12, after which the spacer device is removed for re-use, and the metal clip is included in the work.

The advantage of the proposed device is to reduce labor costs in the application and in reducing consumption of materials due to more efficient support structure of the spacer device, transmitting the load from the hydraulic jacks on a metal clip.

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, made with possibility of impact on the metal clip in its longitudinal direction, wherein the metal clip is rigidly coupled to the thrust element, the spacer device �support structure was established and, at least two hydraulic jacks installed in the bottom of the device for amplifying and interactive upper part with a support structure that is installed with the possibility of emphasis in supporting cross straps with metal clips and a bearing for the said jacks, the jacks are supported through the switchgear installed on the bottom layer of mortar resistant corners, characterized in that the spacer supporting structure of the device is made in the form of at least two steel resistant elements, symmetrically attached to the supporting structure, with steel resistant element contains a shelf U-shaped cross-section, is provided with a wall, exceeding the height of the shelves, and ribs disposed T-shaped on the shelf, one of which with serving on the shelf part of the wall formed by the return groove of the supporting cross bar metal clips, the wall is located in the gap between the supporting structure and the supporting cross bar and under the second rib is the Jack that transmits the force of the thrust through the steel resistant element and the transverse support bar metal holder.

2. Device for strengthening of load-bearing structures according to claim 1, characterized in that the transverse support strap metal clips, which is a focus for steel resistant elements p�and transfer them to load made thick and is welded around the perimeter of the joint to the vertical corner element.

3. Device for strengthening of load-bearing structures according to claim 1, characterized in that the steel resistant element for fixing it to the supporting crossarm with a spring clamp with swivel holder.

4. The device according to claim 1, characterized in that the device for strengthening of supporting structures, having at the top of the console with inclined faces, a vertical corner elements in the upper part of the metal clips are made with a bent part.



 

Same patents:

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2 tbl

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4 dwg

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5 cl, 1 tbl

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EFFECT: increased service life of repaired coating and increased quality thereof.

5 cl

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17 cl, 2 dwg

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12 cl, 14 cl, 2 ex

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EFFECT: decreased metal consumption of superstructure skeleton.

9 dwg

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