Method to reinforce structures of building cover
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.
The invention relates to the field of construction, and in particular to methods of reinforcement of structures with lightweight roofs of buildings.
There is a method of amplification of structural coverage, including supporting structures and fencing in the form of ribbed slabs (Malygin, A.I., Spitting B.C. the Restoration and strengthening of the enclosing structures of buildings and constructions. Tomsk. "Print factory", 2002, str). Strengthening of structural coverage is to install reinforcing beams with the upper zone of rolled I-beams.
The disadvantage of this method of amplification is the complexity of the installation of all reinforcing trussed beams in the cavity between the bearing structure and reinforced cladding and the need to use podklinivaja elements.
There is a method of amplification of structural coverage, including supporting structures, beams, flooring and decking (KTN. I.S. Rebrov. Strengthening the core metal structures. M.: stroiizdat, 1988. p.12-13). The reinforcement beams and flooring is accomplished by the supply of additional beams I-beam section.
The disadvantage of this method of amplification is the complexity of deciding reinforcing beams and transmitting the load from the deck to additional I-beams.
Closest to the invention is a method of strengthening structures p is the closure of the building, including supporting structures, runs and fencing, consisting in the installation between existing purlin reinforcing beams of channel, based on the supporting structure and attached the ends to the adjacent purlins (RF patent No. 2199636. IPC E04B 5/10. Bulletin No. 6 dated 27.02.2003).
The disadvantage of this method of amplification is the complexity of the installation of reinforcing beams of channel in the opening between the bearing and enclosing structures of coverage and getting them to work together.
The invention is directed to reducing the labor required for the installation of reinforcing beams and reliability enable load-bearing and enclosing structures in the joint operation.
The result is achieved that in the known method of strengthening the roof structures of buildings, including structures, runs and fencing, consisting in the installation between existing purlin reinforcing beams of channel leaning on their supporting structures, according to the invention before installation of the reinforcing beams in places bearing on their supporting structures cut out portion of the upper shelf sections and the welding of the fixed similar plot shelves on the opposite side of the wall, turning the cross section of the channel in the z-shaped, and the final installation of reinforcing beams is carried out by its rotation around the longitudinal axis.
On Phosa constructive slit coating.
Figure 2 shows the process of transformation of the area channel section reinforcing beams in the z-shaped cross-section. Dashed lines indicate the cut section of the shelf.
Figure 3 shows the final installation of reinforcing beams by its rotation around the longitudinal axis.
Method of strengthening the roof structures of buildings, including supporting structures 1, runs 2 and enclosure 3 is installed between the existing purlin 2 reinforcing beams of channel 4, based on the supporting structure 1. In reinforcing beams 4 before you install them in places bearing on the supporting structures 1 cut out portion of the upper shelves and the welding of the fixed similar plot shelves on the opposite side of the wall, turning the cross section of the channel in the z-shaped (Figure 2). Next, the reinforcing beam 4 is slid into the cavity between the bearing structure 1 and enclosure 3 and by its rotation around the longitudinal axis mounted in operating position between the bearing 1 and enclosing 3 designs. When turning the reinforcing beam 4 in the area of its bearing on the supporting structures 1 overall height z-shaped section is not changed and is equal to the height of the cross section of the existing 2 runs. Therefore, is provided with a contact bearing 1 bearing 3 structures, i.e. their inclusion in the joint operation.
The invention allows for simplified installation usilivayuscayasya and improve the reliability of the joint work of structural coverage after amplification.
Method of strengthening the roof structures of buildings, including structures, runs and fencing, consisting in the installation between existing purlin reinforcing beams of channel leaning them on the supporting structure, characterized in that prior to installing the reinforcing beams in their bearing on the supporting structures in the reinforcing beam of channel cut out portion of the upper shelves and the welding of the fixed similar plot shelves on the opposite side, making the cross section of the channel in the z-shaped, and the final installation of reinforcing beams is carried out by rotating them around the longitudinal axis.
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.
SUBSTANCE: in the method to repair a building facade, including dismantling, of at least a part of masonry of oil facing bricks and development of new masonry of facing bricks with fixation on the bearing wall of the building, according to the invention, development of new masonry and its fixation is done by fixing anchors in the bearing wall of the building, onto which horizontal rows of reinforcement are laid, on each of which, using mortar, they lay several rows of bricks with a gap relative to the bearing wall of the building, at the same time the first and last rows of the new masonry of facing bricks are arranged with horizontal ventilation gaps in respect to the old masonry. Besides, as the masonry is fixed onto the bearing wall of the building, in the specified gap they lay mortar in the form of vertical strips that connect areas of fixation of anchors, for additional fixation of bricks and elimination of anchor corrosion.
EFFECT: increased service life of a repaired facade of a building without change in its appearance, elimination of moisture condensation on a facing brick and in a facing brick due to formation of a ventilation gap in the facade, due to which a directed air flow from bottom up, which carries away warm moist air from a wall, preventing moisture condensation, increased service life of a facade happens due to suggested reliable fixation of facing brick masonry on a bearing wall of a building.
SUBSTANCE: reconstructed building includes the old building with foundation and upper overlapping, additional foundation located lengthwise outer perimeter of the old building, vertical columns located on additional foundation with at least one interfloor overlapping located above the old building, and overlapping installed on upper part of vertical columns and connected to them, and walls fixed between vertical columns. Reconstructed building contains in addition at least one load-bearing suspension located above the old building and connected to the mentioned overlapping. Additional foundation is made so that its loading is out of the area of power impact of the old building on the foundation. Overlapping is designed as load-carrying structure. Interfloor overlapping is connected to load-carrying structure by at least one load-bearing suspension, it is mounted in direction from load-carrying structure to upper overlapping of the old building and is designed with possibility of interaction with vertical columns.
EFFECT: improving operating reliability of reconstructed building.
SUBSTANCE: spacers of a steel shell are made in the form of a pair of angular stands and connection planks, which are fixed to each other by means of a welded joint in the form of a complex joint, at the same time the connection plank is made as a steel plate, dimensions and shape of the end and middle section of which is taken from the conditions of the bearing capacity of the plank and the welded joint.
EFFECT: higher reliability of operation of welded joints in a butt joint and overlapping, reduced metal intensity and higher fire protection of steel shell spacers to reinforce a column.
15 cl, 11 dwg
SUBSTANCE: device for reinforcement of ceiling with wooden beams includes metal beams along its whole length, mounted in the gaps between wooden beams. Bottom point of metal beams is located below the top of wooden beams with total inner dimension of the rest of ceiling. At metal beam top, a top rod band passing through a wooden beam and connected by supports with lower rod band is mounted, with the wooden beam resting on lower rod band over supporting plates.
EFFECT: enhanced structural capability of ceiling under reconstruction.
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.
SUBSTANCE: device 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.
EFFECT: invention provides for unloading of bearing walls of buildings.
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.