Reinforcement device for load-carrying structures
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.
SUBSTANCE: metal support is designed in the form of interconnected vertical pillars and horizontal beams, assembled in a single frame, intended for mounting and fixing inside the tank. Vertical pillars in the upper part of the tank are fixed to the support ring of the tank by means of bolt connection, and are welded to the edge sheet in the lower part of the tank through the glass. Metal support is also provided with fixing anchors, located along the perimeter of the repair area perpendicularly to the vertical pillars and horizontal beams. Metal support comprises the mean for moving fixing anchors relative to the vertical pillars, horizontal beams and vertical wall of the tank.
EFFECT: improving the repair quality of the tank wall.
4 cl, 4 dwg
SUBSTANCE: device to seal areas of metal-concrete adjacency comprises a plate steel part of protective sealed doors, hatches or flanges of tubular inputs of engineering utilities with holes for injectors. Holes are evenly arranged along the steel part. The device comprises a source of DC current with a rheostat or an autotransformer and an electromagnet. The electromagnet is installed on the steel part, with a coil in the form of a winding from current-conducting wire with insulation and ends of this wire, closed to poles of the source of DC current. The coil of the electromagnet is arranged on a crossbeam of the U-shaped magnetic conductor. The lower part of each stand of the magnetic conductor fully complies with the shape, volume and geometric dimensions of the inner space of the hole for the injector. The height of the lower part of magnetic conductor stands is equal to thickness of the steel part. The distance between centres of cross sections of the electromagnet magnetic conductor stands is equal to double distance between centres of holes for injectors.
EFFECT: device makes it possible to increase quality of sealing, to reduce power inputs and consumption of materials.
SUBSTANCE: invention relates to the field of construction, in particular, to the method to reinforce precast panels of cellular concrete surface. The method of reinforcement consists in the fact that the roof structure is opened along the seam of coupling of adjacent panels for the width of 300-400 mm. Then they cut through slots with width of 85-90 mm along the seams through the entire length of the panel, afterwards they insert longitudinal steel beams into the slots from the top, having gussets at the bottom to fix cross beams. Cross beams are connected to longitudinal beams and are connected by gussets with longitudinal beams by assembling bolts. Gaps between cross beams and the reinforced panel are filled with concrete, and gaps between longitudinal beams and side surfaces of panels are filled with construction foam. The slot above the surface of longitudinal beams is filled with a heat insulation material, then the roof design is restored, and steel reinforcing elements protruding beyond the ceiling surface are coated by protective materials.
EFFECT: increased bearing capacity of a coating panel.
4 cl, 8 dwg
SUBSTANCE: method to reconstruct a building or a facility includes installation of stiffening cores inside a building or their erection to perceive load from bearing elements of the building or facility carcass. Stiffening cores are installed with a gap in respect to reinforced spans of floors, under which bearing girders are mounted. Girders are fixed in stiffening cores at the depth of at least half of thickness of the appropriate stiffening core perpendicularly to the latter and are connected as fixed with spans. Spans are made in the form of crossbars and floors, or crossbars, or floors. Ends of bearing girders are embedded into stiffening cores.
EFFECT: increased stability of a building.
SUBSTANCE: invention relates to the field of construction and may be used for radical reinforcement of slabs exposed to durable impact of aggressive medium and having practically lost bearing capacity. The device to reinforce a solid reinforced concrete slab includes several reinforcement elements and comprises two additional solid reinforced concrete slabs arranged on the top and at the bottom and combined to each other by means of reinforced concrete keys. The lower slab is equipped with rods with helical thread at the ends, performing the function of the pre-stressed working reinforcement, connected on nuts with anchors, which serve as stops for them. Anchors are connected with the main slab as a dowel by epoxide glue. Keys are equipped with vertical rods performing simultaneously the function of working reinforcement of keys and function of suspension in fixation of the lower slab formwork. The surface of contact between the main and lower slabs is equipped with a layer of compound on the basis of epoxide resin preventing access of aggressive medium to working reinforcement.
EFFECT: increased bearing capacity, stiffness and crack resistance of a slab.
SUBSTANCE: method to reinforce structures of a building cover, comprising bearing structures, runs and an enclosure, consists in installation of reinforcement beams from channels resting against bearing structures between existing runs. In the areas of resting of reinforcement beams onto bearing structures they cut a section of an upper shelf of a channel, using welding, they fix a similar section at the opposite side, turning cross sections of the channel into a z-shaped one. Final installation of reinforcement beams is carried out by means of their rotation around the longitudinal axis.
EFFECT: reduced labour intensiveness during installation of a cover and increased reliability of joint operation of cover structures after reinforcement.
SUBSTANCE: invention relates to the field of construction, namely, to a support element designed for pasting-in into brick masonry and used in assemblies of slab support. The support element comprises a central rod and end anchor parts. The central rod is made of a concrete cylinder, having longitudinal corrugations on the outer side for better spread of an injectable formulation with depth of 0.1-0.5 cm and two transverse corrugations for installation of fixing rings with depth of 0.1-0.5 cm: an inner aligning ring in the form of a sprocket and an outer fixing ring with a reference hole in the upper part. In the centre of the cylinder there is a through hole for installation of the nozzle into it for injection of the chemical formulation.
EFFECT: increased strength of a support element.
3 cl, 3 dwg
SUBSTANCE: device to reinforce beam structures includes prestressed four-branch braced ties fixed at ends of the beam in its upper part, resting in areas of bending at hinged cylindrical supports with a pad, installed in the lower part of the beam and tightened by yokes. In the upper end zone of the beam there are angular profiles installed onto a footing, where braced ties are fixed as a tightened assembly.
EFFECT: increased bearing capacity due to balance of forces in all bands of a braced system.
2 cl, 4 dwg
SUBSTANCE: invention relates to the field of construction, in particular to protection against oxidation of the active and passive frames laid in the concrete mass. A method of injecting fluid into a porous material or a material having boundary lines, comprising the following steps is revealed in the invention: attachment of an injector to the indicated material, which defines the boundaries of a compression chamber at least with one surface of the indicated material; injection of the indicated fluid into the indicated compression chamber under low pressure; influence on the indicated fluid by an acoustic wave of high power by means of an oscillating element, passing directly into the indicated compression chamber.
EFFECT: provision of deep impregnation of surfaces or boundary lines of heterogeneous materials.
14 cl, 3 dwg
SUBSTANCE: invention relates to methods of reinforcing power constructions, which have existing or predictable collapsing sections, by means of strips of composition material. As strips used is woven or non-woven reinforcing filling agent from glass, basalt, synthetic polymer or carbon fibres. Said fibres are impregnated with polymer composition in amount 30÷60% from composite weight, providing their adhesion to power constructions and further hardening from +5°C to +100°C for from 5 minutes to two days. Polymer composition contains in wt %: epoxy resin 100, active epoxy diluent 5÷130, hardening agent 15÷110, thickening agent 5÷50, pigment or dye 0.5÷50. As gardening agent it contains product of interaction of amine component with monocarboxylic acids. as amine component used is mixture, consisting of primary aromatic amine or mixture of aromatic amines (A), secondary aliphatic amino alcohol (B) and tertiary aliphatic amino alcohol (C) in weight ratio A:B:C from 98:0.2:1.8 to 80:5:15. Monocarboxylic acid (D) is introduced in form of 25÷80% solution in monoatomic aliphatic or aromatic alcohol, or their ether with mono- or dicarboxylic acid, in ratio (A+B+C):D from 90:10 to 60:40 counted per 100% acid with further interaction by mixing in reactor at temperature from 50 to 130°C for from 20 to 120 minutes at rate of mixer from 100 to 3000 revolutions per minute.
EFFECT: increased adhesion of reinforcing strips from composition materials to the surface of constructions and their more effective reinforcement are provided.
FIELD: building, particularly for concrete structures reinforcing.
SUBSTANCE: structure 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.
EFFECT: increased load-bearing capacity, reliability and service life of reinforced concrete floor beams and longitudinal ribs of ribbed slabs, possibility of full residue bearing capacity usage of structure.
FIELD: building, particularly to prevent separation of roofing material layers during roof repair.
SUBSTANCE: 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.
EFFECT: increased reliability of waterproofing mat gluing in presence of water cavities regardless of separation area and reduced time of roof repair.
FIELD: building, particularly building reconstruction.
SUBSTANCE: method 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.
EFFECT: prevention of service performance reduction.
16 cl, 2 dwg, 2 ex
FIELD: building, particularly to recover load-bearing capacity of reinforced concrete frames of industrial and civil buildings.
SUBSTANCE: method 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.
EFFECT: possibility to recover load-bearing building frame capacity without production process stopping and decreased labor inputs.
FIELD: building, particularly to repair beams, walls, columns and poles.
SUBSTANCE: method 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.
EFFECT: increased reliability of structure to be reinforced.
FIELD: building, particularly roof repair and waterproofing.
SUBSTANCE: 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.
EFFECT: increase service life of waterproof covering.
5 cl, 1 tbl
FIELD: building, particularly to repair waterproof coatings and roof coverings including organic binding agent.
SUBSTANCE: 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.
EFFECT: increased service life of repaired coating and increased quality thereof.
FIELD: repairing, for instance filling cracks, restoring, altering, enlarging, particularly for repairing monuments, museum pieces and applied and decorative art pieces.
SUBSTANCE: method 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.
EFFECT: reduced labor inputs and material consumption, increased environmental safety and joint sealing reliability, elimination of additional mechanical or chemical treatment.
17 cl, 2 dwg
FIELD: construction, particularly building reconstruction.
SUBSTANCE: method 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.
EFFECT: increased strength and air-tightness.
12 cl, 14 cl, 2 ex
FIELD: construction, particularly working measures on existing buildings.
SUBSTANCE: superstructure 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.
EFFECT: decreased metal consumption of superstructure skeleton.