Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
  • E04C5/08—Members specially adapted to be used in prestressed constructions
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
  • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
  • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
  • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
  • E04G21/12—Mounting of reinforcing inserts; Prestressing
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G23/00—Working measures on existing buildings
  • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
  • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements

Definitions

• the invention relates to drawing production and can be used in the production of pre-stressed reinforcement intended for the reinforcement of multi-core hollow-core molding plates and other concrete products.
• a disadvantage of the known reinforcing wire is low specific strength, fatigue and relaxation resistance, which is caused by the presence of stress concentrators in the transitional sections of the periodic profile, and the stress concentrators are located in areas with a reduced cross-sectional area.
• Another disadvantage of the known reinforcing wire is low adhesion to concrete. This factor is due to the very small depth of the periodic depressions and small angles of inclination of the edges of these depressions to the axis of the wire, as a result of which the Poisson narrowing of the wire during its operating tension leads to the protrusions of concrete formed when the periodic depressions are filled on the surface of the wire in the morning.
• the closest analogue to the reinforcing wire according to the present invention is a reinforcing wire with a spiral profile, having a cross section in the shape of a circle with four trapezoidal protrusions, the outwardly facing part of the surface of which is an arc of a circle coaxially with the main surface of the reinforcing wire, while the projections are located above the main surface in a spiral and continuous along the entire length of the wire (see People's Republic of China Standard GB / T 5223).
• This reinforcing wire structure has higher specific strength, fatigue and relaxation resistance due to a constant cross-section along the entire length, implying stationarity of the pressure treatment process and, accordingly, uniformity along the length of the properties obtained.
• the well-known wire construction provides higher adhesion to concrete due to the multiple higher profile height and greater relative crushing area, however, in general, it does not provide high adhesion to concrete due to the volume of concrete limited by the height of the protrusions loaded on the sides of the projections. crumpling / shearing, while the outwardly turning cylindrical surface of the protrusions is used only in adhesive and friction adhesion, as well as the possibility of spiral displacement of the wire in concrete according to its own imprint without destroying it.
• the object of the invention is to design a reinforcing wire structure that simultaneously provides the highest possible adhesion to concrete, including mechanical adhesion in any potentially possible direction of displacement, and a high level of specific strength, relaxation and fatigue resistance.
• the reinforcing wire with a spiral profile has a section in the shape of a triangle with rounded corners, with the edges and edges of the wire formed by the rounded corners and sides of the triangle, respectively, arranged in a spiral, and on the surface of the faces, a periodic profile in the form of inclined trapezoidal protrusions with rounded transition portions is made along the line of their location.
• the reinforcing wire may have a cross-section in the shape of a quadrilateral with rounded corners or an oval.
• the faces of the wire surface can be made both lined and convex or concave.
• Such an embodiment of the wire ensures the transfer of the tension of the wire to concrete through the normal stresses of the support reaction arising due to wedging of the spiral side faces inclined to the axis of the wire - studies of the adhesion of concrete to the reinforcing ropes confirmed the safety and exceptional effectiveness of this method of adhesion realization;
• the plates were destroyed due to the complete exhaustion of the strength of the ropes, with loads of 25-35% higher than for identical plates reinforced with equivalent in the number of ropes, their section, strength and actual tension with a standard rope package.
• the presence of a periodic profile on the spiral edges of the reinforcing wire prevents it from slipping over its own impression in concrete, and the configuration of the periodic profile in the form of protrusions above the surface eliminates the weakening of the cross section at its location and shifts the stress concentrators .
• FIG. 1 schematically shows the appearance of reinforcing wire with a spiral profile
• in fig. 2 schematically shows a cross section of a reinforcing wire with a spiral profile.
• FIG. 1 Armature wire with a spiral profile in accordance with one embodiment of the invention is shown in FIG. 1, 2.
• On the surface of the wire 1 (Fig. 1, 2) three ruled surfaces 2 are spaced along a helix, separated by sections of a cylindrical surface 3.
• On the ruled surfaces 2 are inclined in the direction opposite to the helix direction the location of the ruled surfaces 2, trapezoidal projections 4.
• the reinforcing wire produced is tensioned to a force of 30–70% of the breaking force, using any known method — for example, between two capestases, each of which is a set of driven and non-driven or two driving pulleys.
• any known method for example, between two capestases, each of which is a set of driven and non-driven or two driving pulleys.
• the reinforcing wire is in the straight-line tensioned state, it is heated to a temperature of 370–430 degrees, for example, by means of an induction furnace, after which the sprayed wire is forced-cooled
• the telem is also in the rectilinear tensioned state in the interval between the first and second capstans.
• the wire Upon completion of the cooling, the wire passes through the second capstan and enters the accumulator, from which it is rewound into coils, or into the scissors, where it is cut into measured lengths. Further, the wire is wound or cut to measured lengths and is packaged by known methods.
• the wire can be formed in one technological course with the drawing operation.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• Reinforcement Elements For Buildings (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (1)

Family

ID=65527744

Family Applications (1)

Country Status (9)

Citations (4)

Family Cites Families (17)

• 2018
  • 2018-03-01 BR BR112020004335-4A patent/BR112020004335A2/pt not_active Application Discontinuation
  • 2018-03-01 JP JP2020534158A patent/JP2020537072A/ja active Pending
  • 2018-03-01 US US16/643,854 patent/US20210002897A1/en not_active Abandoned
  • 2018-03-01 CN CN201880057513.2A patent/CN111094674A/zh active Pending
  • 2018-03-01 KR KR1020207009755A patent/KR20200045559A/ko not_active Application Discontinuation
  • 2018-03-01 EP EP18852107.4A patent/EP3680412A4/en not_active Withdrawn
  • 2018-03-01 WO PCT/RU2018/000113 patent/WO2019045595A1/ru unknown
  • 2018-03-01 RU RU2021109058A patent/RU2760809C1/ru active
  • 2018-03-01 CA CA3073813A patent/CA3073813A1/en not_active Abandoned

Patent Citations (4)

Non-Patent Citations (1)

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