Device for ribbed concrete plate reinforcement. RU patent 2504629.
 Device to unload bearing walls of buildings / 2503788Device to unload bearing walls of buildings comprises metal unloading stands installed in holes made between windows inside an unloaded wall and connected to each other by frames of window openings, each of which consists of angles arranged at the inner and outer side of the unloaded wall, tightened to each other by threaded braces. At the same time the metal stands of unloading rest onto an existing foundation strengthened with augercast piles. |
| Coloured material for gluing stone / 2499017 Adhesive contains at least 100 pts.wt unsaturated polyester resin suitable for air drying, 1-5 pts.wt hydrogenated castor oil, 10-250 pts.wt filler and 1-15 pts.wt anti-shrinking agent. |
 Spacer for building column reinforcement / 2498035Spacer of a steel shell includes a pair of angular stands and connecting planks, which are fixed to each other by a welded joint in the form of a complex seam, at the same time the connecting plank is made in the form of a steel plate, dimensions and shape of the end and middle section of which are taken on the basis of conditions of the bearing capacity of the plank and the welded joint. |
 Method to reinforce column and joined elements of building slab / 2498034Method of reinforcement includes performance of technical survey, verification calculations, design, manufacturing and installation of elements of a reinforcement device. Steel shell stands are stressed with controlled force and subsequent pressing and concreting. The spacing unit of the reinforcement device is installed in the upper part of the reinforced column. The unit is made from a support table and steel combs. Combs comprise support plates and loading screws that form a T-shaped welded joint. Elements of the reinforcement device are included into operation simultaneously at two opposite faces of the reinforced column coupled with the elements of the building slab. |
 Device to reinforce column and joined elements of building slab / 2498033Reinforcement device includes stressing stands of a steel shell of a column and a spacing unit. The spacing unit comprises support tables, loading screws, thrust elements. The support table is made from a section of a rolled steel angle, reinforced with stiffening ribs, equipped with holes for installation of loading screws. Loading screws are equipped with tension nuts, washers and lock-nuts. The frame of stressed spacers is made of two pairs of steel angles connected by planks. The spacing unit comprises two steel combs installed onto support tables. Support tables are attached to stands of the steel shell at two opposite faces of the reinforced column. Steel combs include thrust plates with loading screws tightly attached to them. Thrust plates are fixed to support parts of joined slab elements. Through rest against thrust plates the loading screws transfer power load to stressed stands of the steel shell, including the latter directly into operation of the reinforced column. |
 Method to reinforce wooden beams of floor slabs / 2496957Reinforcement method includes removal of floor structures, clearing of a beam-to-beam filler, assembly of reinforcement elements and development of a stiff slab structure. The stiff slab structure is developed by conversion of a wooden beam slab into a system of composite ribbed spatially working slabs. Beams are prepared by levelling of their upper surfaces. Veneer-like reinforcement slabs are laid onto beams in longitudinal direction and fixed, being tightly pressed to beams with the help of links. Links provide for perception of moving forces arising under a new increased load. Reinforcement slabs are laid with account of the ratios between the width of the reinforcement slab and beam pitch and accordingly with usage or without usage of filling slabs. Filling slabs are used to fill clear spaces between reinforcement slabs, and they are rested onto crosspieces, which are additionally installed between beams. |
 Reinforced-concrete column reinforcing method / 2494204Method to reinforce a reinforced concrete column with the help of its additional external reinforcement, with subsequent closing of this reinforcement, consists in the fact that previously the protective layer concrete is removed to the longitudinal reinforcement, a new additional reinforcement is installed along the entire height of the column with the help of welding, using polymer-cement repair compounds, a protective layer is applied to close and level the column surface with rounding of its angles with a radius of 10…20 mm. Then the concrete surface is cleaned and treated with a priming compound, a layer of an adhesive compound is serially applied onto the concrete surface, a coal cloth is laid and fixed, a finishing layer of the adhesive compound is applied, which is filled with a thin layer of dry sand with size of 0.5…1.5 mm. |
 Device to strengthen reinforced concrete floor beams / 2491396Device to strengthen reinforced concrete floor beams comprises a tie-beam put in service by pre-stressing and fixed with the help of nuts on supports crossbeams, pads of steel angles arranged in a compressed area and connected with a reinforced beam by epoxide glue and steel keys. Angles are additionally connected with a beam with the help of yokes of U-shaped cross section from a fibre-reinforced plastic, covering the beam cross section at two sides and at the bottom along the contour in the support zone and glued with epoxide glue to the surface of angles and the beam, being external reinforcement. Available gaps between pads and floor slabs are filled with fine-grain concrete of stiff consistence. |
 Method to reinforce glue and veneer double-tee girder / 2490408Method of reinforcement consists in increased area of contact between a part of a flat veneer wall inserted into longitudinal slots of girder belts. At the outer side of belts in direction of longitudinal slots there are cylindrical or circular grooves arranged with a recesses of a part of wall edges. Cylindrical dowels of solid or circular cross section are installed into grooves. |
 Method to reinforce pillar and suspended wall panels / 2486323Method includes technical visual inspection, manufacturing of thrust elements of a bearing frame, a tensioning unit, a stressing spacer, angular thrust parts of flat composite frames, transverse reinforcement in the form of a "zigzag" net of reinforcing elements, fixtures of suspended wall panels; steel elements of a reinforcement device are included into operation of pillars and suspended wall panels and then coated with a fireproof material. |
 Reinforcing structure for bendable reinforced concrete members / 2250325Structure includes trussed tie bar and additional compressed member. Structure is provided with telescopic post having spring. Post is arranged between trussed tie bar and compressed member formed of channel bar. Compressed member is located in level with lower belt of beam to be reinforced and encloses it. Trussed tie bar ends are connected to compressed member, which in turn is secured to beam to be reinforced by compressed member ends through collars. |
| Method for elimination of bitumen roll roofing material separation / 2260098 Method involves injecting material forming liquid bitumen layer in roof area of separation through orifices arranged in waterproofing mat above the area; consolidating the area to be repaired. Orifices are spaced 0.2-2.0 m apart. At the beginning of material injection process air or water is removed from the cavities through above orifices and then emulsified bitumen, including 30-80% of bitumen, is fed. Emulsified bitumen is spread in cavity over the full area of separation using weight, which is moved over the roof surface. Before compaction the area of separation is heated up to 100-160°C and then held at this temperature up to bitumen dewatering and water vapor discharge from the area through above orifices in atmosphere. |
 Method for building reconstruction and raising / 2265705Method involves forming main drilled piles along building foundation perimeter, where the piles are arranged outside the foundation; mounting the main load-bearing supports on the drilled piles so that load-bearing supports are arranged in pairs from opposite sides of the building; mounting load-bearing girders on load-bearing vertical support heads, wherein the bearing girders are arranged in rows; erecting additional stories on the bearing girders. Main drilled piles extend for depth not less than building foundation depth in ground. Upper pile parts are pulled together in pairs. Additional drilled piles adapted to support additional load-bearing vertical supports are driven outside the building foundation beyond the main ones. At least one additional load-bearing support is arranged in the main vertical support row from one building side. |
 Reinforcement method for reinforced concrete pillar with decreased load-bearing capacity / 2274719Method to recover load-bearing capacity of reinforced concrete column subjected to concrete and reinforcement corrosion by column surface moistening, scoring, column cross-section widening, enclosing with ferrule and reduction of longitudinal compressing force application eccentricity involves deforming steel pipe; reducing steel pipe cross-section by compressing thereof with two rollers to impart oval cross-section to the pipe so that major oval axis is equal to three minor axes; cutting the pipe in longitudinal direction; inserting damaged column in steel ferrule so that major cross-sectional axis is directed in plane of compressing force application eccentricity and reducing eccentricity; connecting two halves of oval pipe in air-tight manner and filling gaps between steel ferrule and damaged column with expanding fine concrete injected through nozzles in the cavities in bottom-top direction; compacting concrete with vibratory action and applying stress to cross-section during concrete setting by compressing thereof from all sides by steel form to reinforce the whole structure. |
 Building structure reinforcement method / 2277620Method involves installing reinforcing members on structure to be reinforced and connecting the members with fastening members; welding the fastening members to one reinforcing member; heating thereof and welding the heated members to opposite reinforcing member; terminating the heating operation. The fastening members may be installed between reinforcing member surfaces or laid on ends thereof. In the first case initial fastening member length is determined from the following equation: L=SBH-α·(T-Ta), where SBH is distance between inner reinforcing member surfaces, α is linear expansion factor of fastening member material, T is fastening member heating temperature, Ta is ambient temperature. In the second case fastening member length is defined as L≥So, where So is distance between outer surfaces of reinforcing members. |
| Building structure water-tightness and waterproof covering recovery method / 2282007 Method involves arranging roof paper between coating area to be repaired and movable heating member; heating organic binding material to soften thereof by means of the heating member; compacting the coating along with rolling-on roofing paper to heated coating. |
| Method to recover water permeability and waterproof coating of building structures / 2283405 Method involves determining brittle temperature of organic binding agent; calculating plastic range thereof; heating organic binding covering with heating member laid on the covering and compacting the covering. The organic binding agent is heated up to temperature 1.6-3.2 times greater than plastic range. |
 Method for joint sealing with lead-based molten material / 2284400Method involves drying joint and filling thereof with dry non-combustible materials before lead-based molten material pouring in joint; filling the joint with lead-based molten material, which is supplied through pouring channel system made of molding material, wherein the molding material provides predetermined geometry of sealed joint. The molten material is supplied as continuous jet. Joint to be sealed may be located in vertical or horizontal planes or in plane inclined at 0-90° angle with respect to horizontal plane. The lead-based molten material may be reused for repairing work performing. |
 Method and kit to erect inserted structure between two existent buildings / 2292434Method involves erecting foundation of inserted structure, forming through pass in-between and constructing one or several stories over the foundation. The stories are built of kit including vertical panels and floor panels, which are connected with existent building walls by tie members. Joints are hermetically sealed. Floor panels are installed on guiding means having opened parts. Opened parts of guiding means are welded with each other after structure assemblage. Roofs of adjacent buildings are extended up to inserted structure walls. Projection adapted to drain water from the structure is hermetically installed over joint between the roof and the inserted structure. Guiding means are made as outer centralizers in upper parts of vertical and floor panels and as inner centralizers in lower panel parts. |
 Superstructure skeleton / 2305739Superstructure skeleton comprises lower row transversal frames arranged within the limits of building length and lower end transversal frames projecting out of the building length and including two belts. The end transversal frames have columns and trusses located from building outside and provided with parallel belts. Arranged in the trusses are upper row and end frames having two belts and including columns and trusses. Skeleton also comprises floor panels. Lower superstructure stories are provided with central columns installed in lower frame truss joints and are united with each other by structural stands of intermediate stories. Space of one intermediate story is free of frame structures. Main beams of upper intermediate stories are secured to upper frame trusses by means of suspension brackets. |
FIELD: construction.
SUBSTANCE: device for ribbed concrete plate reinforcement includes relief angles connected to a channel attached to transverse rib of the plate and to V-shaped reinforcement element positioned under reinforced longitudinal ribs and fixated to heel joints by bolts. Surfaces of reinforced ribs facing the reinforcement element are notched along the whole height of rib and element contact area. Free space between reinforcement element and ribs is filled with stressed sand concrete.
EFFECT: enhanced structural capability of a structure.
3 dwg
The invention relates to the construction and relates to a method of strengthening of reinforced concrete ribbed plates, damaged due to various reasons, including affected by fire in fire conditions or from an operational accident, as well as reconstruction of buildings and constructions.
A device for strengthening the edges of plates (see RF patent №2106461 published 10.03.98),including the reinforcement of strengthening and protective coating on the outer side of the amplified plot around the edges of the lateral faces a metal net, which is fixed by the length of the side faces with their opposite sides within the zone of concrete edges, where the tensile stresses not exceed half of the resistance of concrete to the axis of the tensile, metal strips attached to the ribs).
As a prototype made device for strengthening of ribbed concrete slabs (see RF patent №2181824 published 27.04.2002), including a V-shaped element of strengthening located under edges and fixed with screws to the backbone sites, on the surfaces of amplified edges facing the element gain, made notch depth of 5-10 mm and a width of 20-25 mm with step of 150-250 mm along the entire height of the zone of contact of edges element to strengthening, and the free space between the element and strengthening ribs filled sandy concrete.
The disadvantage of the prototype is the lack of strengthening of the transverse ribs concrete slab. Bearing elements of the design to the reinforcement of the different, the destruction of the design are more likely to happen prematurely on transverse ribs with lower margin of safety compared with reinforced longitudinal ribs.
The technical result of the invention is increasing the bearing capacity of the construction.
The technical result is achieved by the fact that the device for strengthening of ribbed concrete slabs done with the use of V-shaped element of the gain, which is located under the longitudinal ribs and fastened by bolts to the backbone sites. On the surfaces of amplified edges facing the element of strengthening run notch depth of 5-10 mm and a width of 20-25 mm with step of 150-250 mm along the entire height of the zone of contact of edges with the element of strengthening. The free space between the element and strengthening ribs filled sandy concrete.
The peculiarity is that the device attached corners , which are connected to assigned to cross the edge of ribbed concrete slab and the V-shaped element of strengthening beneath longitudinal ribs and attached to the backbone sites.
In comparison with the prototype, where stronger only longitudinal ribs, in the proposed solution intensify cross ribs concrete slab.
The invention is illustrated graphically.
Figure 1 shows a fragment of ribbed concrete slabs, on figure 2 - section 1-1, figure 3 - view A.
Device for strengthening ribbed reinforced concrete slab 1 contains corners 2, which are connected to the 3, attached to the cross edge of the reinforced-concrete plate 1 and V-shaped item 4 of the gain, which is located under the longitudinal ribs and pinned to the backbone sites. On the surfaces of amplified edges facing the V-shaped item 4 strengthening run notch depth of 5-10 mm and a width of 20-25 mm with step of 150-250 mm along the entire height of the zone of contact of edges with a V-shaped element 4 of the gain. The free space between the V-shaped element 4 strengthening and longitudinal ribs filled sandy concrete 5.
Device for strengthening of ribbed concrete slabs, containing V-shaped element of strengthening located under longitudinal ribs and attached to the backbone sites, on the surfaces of amplified edges facing the V-shaped element gain, made notch depth of 5-10 mm and a width of 20-25 mm with step of 150-250 mm on all height of a zone of contact of the longitudinal ribs with a V-shaped element to strengthening, the free space between the V-shaped element to strengthening and longitudinal ribs filled sandy concrete, wherein the additionally installed corners , which are connected to the assigned to cross the edge of ribbed concrete slab and the V-shaped element of strengthening beneath longitudinal ribs and attached to the backbone sites.